Calypse Ngwasiri - Academia.edu (original) (raw)

Papers by Calypse Ngwasiri

Scientific Reports, Dec 19, 2022

Ideal Cardiovascular Health (CVH) is a concept defined by the American Heart Association (AHA) as... more Ideal Cardiovascular Health (CVH) is a concept defined by the American Heart Association (AHA) as part of its 2020 Impact Goals. Until now, changes in ideal CVH have been poorly evaluated in Sub-Saharan African populations. We aimed to investigate changes in the prevalence of ideal CVH and its components in a population of Malawian adults. Secondary analysis was done on cross-sectional data from 2009 to 2017, obtained from the Malawi STEPS surveys which included 5730 participants aged 25-64 years. CVH metrics categorized into "ideal (6-7 ideal metrics)", "intermediate (3-5 ideal metrics)" and "poor (0-2 ideal metrics)" were computed using blood pressure, body mass index (BMI), fasting glycaemia, fruit and vegetable intake, physical activity, smoking, and total cholesterol. Sampling weights were used to account for the sampling design, and all estimates were standardised by age and sex using the direct method. The mean participant age across both periods was 40.1 ± 12.4 years. The prevalence of meeting ≥ 6 ideal CVH metrics increased substantially from 9.4% in 2009 to 33.3% in 2017, whereas having ≤ 2 ideal CVH metrics decreased from 7.6% to 0.5% over this time. For the individual metrics, desirable levels of smoking, fruit and vegetable intake, physical activity, blood pressure (BP), total cholesterol and fasting glucose all increased during the study period whilst achievable levels of BMI (< 25 kg/m 2) declined. From 2009 to 2017, the mean number of ideal CVH metrics was higher in women compared to men (from 2.1% to 5.1% vs 2.0% to 5.0%). However, poor levels of smoking and fruit and vegetable intake were higher in men compared to women (from 27.9% to 23.6% vs. 7.4%% to 1.9% , and from 33.7% to 42.9% vs 30.8% to 34.6%, respectively). Also, whilst achievable levels of BMI rose in men (from 84.4% to 86.2%) the proportion reduced in women (from 72.1% to 67.5%). Overall, CVH improved in Malawian adults from 2009 to 2017 and was highest in women. However, the prevalence of poor fruit and vegetable intake, and poor smoking remained high in men whilst optimal levels of BMI was declined in women. To improve this situation, individual and population-based strategies that address body mass, smoking and fruit and vegetable intake are warranted for maximal health gains in stemming the development of cardiovascular events. Cardiovascular disease (CVD) remains the leading cause of premature mortality (deaths before age 70 years) and rising healthcare costs worldwide. The major drivers of CVD include behavioral, cardiometabolic, environmental, and social risk factors, most of which are modifiable 1. Although the age-standardized mortality rate of CVD is declining in most high-income countries (HICs), similar changes have not been observed in Sub-Saharan Africa (SSA) where people with CVDs are significantly younger compared to their HIC counterparts, posing a threat to socioeconomic development 1-3. Primary prevention has therefore been increasingly emphasized as a key strategy to reduce mortality and morbidity from CVDs in SSA 2,4. The American Heart Association (AHA) introduced the concept of ideal cardiovascular health (CVH) in 2010 in a bid to achieve the goal of reducing deaths from heart disease and stroke by 20% by the year 2020. In their definition, CVH includes a number of metrics consisting four behavioral [smoking, body mass index (BMI), physical

BMJ Nutrition, Prevention & Health

IntroductionA higher number of ideal cardiovascular health (CVH) metrics is associated with a low... more IntroductionA higher number of ideal cardiovascular health (CVH) metrics is associated with a lower risk of cardiovascular-related and all-cause mortality. However, the change in CVH metrics has rarely been studied in sub-Saharan Africa. We investigated the level and changes of CVH metrics and their correlates among Beninese adults between 2008 and 2015.MethodsSecondary analysis was performed on data obtained from Benin’s 2008 and 2015 WHO Stepwise surveys (STEPS). In total, 3617 and 3768 participants aged 25–64 years were included from both surveys, respectively. CVH metrics were assessed using the American Heart Association definition, which categorised smoking, fruit and vegetable consumption, physical activity, body mass index (BMI), blood pressure (BP), total cholesterol (TC) and glycaemia into ‘ideal’, ‘intermediate’ and ‘poor’ CVH. The prevalence of ideal CVH metrics was standardised using the age and sex structure of the 2013 population census.ResultsFew participants met all...

International Journal of Environmental Research and Public Health

Geographical disparities in abdominal obesity (AO) exist in low-income countries due to major dem... more Geographical disparities in abdominal obesity (AO) exist in low-income countries due to major demographic and structural changes in urban and rural areas. We aimed to investigate differences in the urban–rural prevalence of AO in the Malawi population between 2009 and 2017. We conducted a secondary analysis of data from the Malawi 2009 and 2017 STEPS surveys. AO (primary outcome) and very high waist circumference (secondary outcome) were defined using WHO criteria. Prevalence estimates of AO and very high waist circumference (WC) were standardized by age and sex using the age and sex structure of the adult population in Malawi provided by the 2018 census. A modified Poisson regression analysis adjusted for sociodemographic covariates was performed to compare the outcomes between the two groups (urban versus rural). In total, 4708 adults in 2009 and 3054 adults in 2017 aged 25–64 were included in the study. In 2009, the age–sex standardized prevalence of AO was higher in urban than r...

Background: Bladder exstrophy-epispadias complex (BEEC) is a rare congenital malformation of the ... more Background: Bladder exstrophy-epispadias complex (BEEC) is a rare congenital malformation of the genitourinary system usually associated with other malformations. Case summary: We report the case of a new born delivered vaginally at 39 weeks and 2 days of gestation with BEEC. Three prenatal ultrasound scans missed the diagnosis. Medical management was provided and the patient was discharged against medical advice 48 hours later upon refusing surgical intervention. Conclusion: The diagnosis and management of BEEC is a challenge in sub-Sahara Africa. Radiologists doing prenatal ultrasounds should check routinely to exclude foetal anomalies. Reporting: Care 2016 guideline.

Health Science Reports, 2021

Introduction: Several anthropometric measurements are variably recommended to assess adiposity in... more Introduction: Several anthropometric measurements are variably recommended to assess adiposity in routine practice, with less agreement on their comparative performance. We assessed and compared the relationship of seven anthropometric measures of adiposity-waist circumference (WC), waist-to-height ratio (WHtR), Body Mass Index (BMI), Ponderal Index (PI), Conicity Index (C index), A Body Shape Index (ABSI), and Body Roundness Index (BRI)-with blood pressure (BP) levels and prevalent hypertension in adult Cameroonians. Methods: Data were collected as Cameroon's contribution to the global May Measurement Month 2017(MMM17) survey. Participants were nonpregnant adults, who had no BP measurement in the past year and with no prior hypertension diagnosis. Hypertension was defined as systolic BP ≥140 mm Hg and/or diastolic ≥90 mm Hg. Odds ratios (ORs) for the presence of hypertension per 1 SD increase in each adiposity metrics were estimated in separate logistic regression models. Assessment and comparison of discrimination used the area under the receiver operating characteristics curve (AUC) and nonparametric methods. Results: We included 14 424 participants (8210 [58.25%] female; 39.84 ± 14.33 years). There was a graded association between measures of adiposity and prevalent screen-detected (newly diagnosed) hypertension, with effect sizes being mostly within the same range across measures of adiposity. AUC for hypertension prediction ranged from 0.

Journal of Medical Case Reports, 2018

Background: Progestin-only subdermal implants are one of the most effective contraceptive methods... more Background: Progestin-only subdermal implants are one of the most effective contraceptive methods. Anembryonic pregnancy is not reported as a possible outcome in cases of contraceptive failure of these products. We present a rare case of anembryonic pregnancy occurring in a woman with levonorgestrel-releasing implant (JADELLE®). Case presentation: A 31-year-old Cameroonian (black African) housewife with a JADELLE® implant for 13 months, consulted at our hospital for a 1-month history of pelvic pain, prolonged menstrual bleeding, and spotting. She had a last normal menstrual period 8 weeks 1 day prior to presentation. On examination, there was suprapubic tenderness and blood trickling from her cervix. Despite a negative qualitative urine pregnancy test, an empty intrauterine gestational sac with mean sac diameter of 28 mm was visualized on pelvic ultrasound. Dilation and curettage with suction was done and she had complete relief from symptoms. Conclusion: This case report highlights the possibility of anembryonic pregnancy occurring in women using the levonorgestrel-releasing subdermal implant (JADELLE®).

Journal of Medical Case Reports, 2018

Background: Cutaneous adverse reactions to medications are extremely common and display character... more Background: Cutaneous adverse reactions to medications are extremely common and display characteristic clinical morphology. A fixed drug eruption is a cutaneous adverse drug reaction due to type IV or delayed cell-mediated hypersensitivity. Ivermectin, a broad-spectrum anti-parasitic compound, has been an essential component of public health campaigns targeting the control of two devastating neglected tropical diseases: onchocerciasis (river blindness) and lymphatic filariasis. Case presentation: We report the case of a 75-year-old Cameroonian man of the Bamileke ancestry who developed multiple fixed drug eruptions a few hours following ivermectin intake that worsened with repeated drug consumption. Discontinuation of the drug, counselling, systemic steroids, and orally administered antihistamines were the treatment modalities employed. Marked regression of the lesions ensued with residual hyperpigmentation and dyschromia. Conclusion: Keen observation on the part of physicians is mandatory during the administration of ivermectin for quick recognition and prevention of this adverse drug reaction.

BMC Cardiovascular Disorders, 2018

Background: Hypertension is a challenging public health problem with a huge burden in the develop... more Background: Hypertension is a challenging public health problem with a huge burden in the developing countries. Non-adherence to antihypertensive treatment is a big obstacle in blood pressure (BP) control and favours disease progression to complications. Our objectives were to determine the rate of non-adherence to antihypertensive pharmacotherapy, investigate factors associated with non-adherence, and to assess the association between nonadherence and BP control in the Buea Health District (BHD), Cameroon. Methods: A community-based cross-sectional study using stratified cluster sampling was conducted in the BHD from November 2013-March 2014. Eligible consenting adult participants had their BP measured and classified using the Joint National Committee VII criteria. The Morisky medication adherence scale was used to assess adherence to BP lowering medication. Multivariable logistic regression models were used to predict non-adherence. Results: One hundred and eighty-three participants were recruited with mean age of 55.9 years. Overall, 67.7% (95% CI: 59.8-73.6%) of participants were non-adherent to their medications. After adjusting for age, sex and other covariates, forgetfulness (aOR = 7.9, 95%CI: 3.0-20.8), multiple daily doses (aOR = 2.5, 95%CI: 1.2-5.6), financial constraints (aOR = 2.8, 95%CI: 1.1-6.9) and adverse drug effects (aOR = 7.6, 95%CI: 1.7-33.0) independently predicted non-adherence to antihypertensive medication. BP was controlled in only 21.3% of participants and was better in those who were adherent to medication (47.5% versus 8.2%, p < 0.01). Conclusion: At least two of every three hypertensive patients in the Buea Health District are non-adherent to treatment. Forgetfulness, multiple daily doses of medication, financial constraints and medication adverse effects are the major predictors of non-adherence in hypertensive patients. These factors should be targeted to improve adherence and BP control, which will contribute to stem hypertension-related morbidity and mortality.

BMC Endocrine Disorders, 2019

Background: Diabetes mellitus is a growing cause of disease burden globally. Its management is mu... more Background: Diabetes mellitus is a growing cause of disease burden globally. Its management is multifaceted, and adherence to pharmacotherapy is known to play a significant role in glycaemic control. Data on medication adherence among affected patients is unknown in Cameroon. In this study, the level of adherence and factors influencing non-adherence to antidiabetic medication among patients with type-2 diabetes was assessed. Methods: A hospital-based cross-sectional study among adult patients receiving care in the diabetic clinics of the Limbe and Bamenda Regional Hospitals in Cameroon was conducted. Medication adherence was assessed using the Medication Compliance Questionnaire (MCQ). Factors associated with non-adherence to medication were determined using basic and adjusted multivariable logistic regression models. Results: A total of 195 patients with type 2 diabetes were recruited. The prevalence of non-adherence to medication was 54.4% [95% confidence interval (CI): 47.1-61.5%]. In multivariable analysis, age > 60 years (aO.R. = 0.48, 95% CI: 0.25-0.94), alcohol consumption (aO.R. = 2.13, 95% CI: 1.10-4.14) and insulin alone therapy (aO.R. = 2.85, 95% CI: 1.01-8.08) were associated with non-adherence. Patients attributed their non-adherence to forgetfulness (55.6%), lack of finances (38.2%) and disappearance of symptoms (14.2%). Conclusions: Adherence to anti-diabetic medication is poor in this study with more than half of participants being nonadherent. Urgent interventions are required to tackle this problem in combined efforts to stem this looming diabetes epidemic.

Pan African Medical Journal, 2019

Plaque-type psoriasis is a major dermatosis with significant effects on quality of life. Case com... more Plaque-type psoriasis is a major dermatosis with significant effects on quality of life. Case complexity is often high in low-resourced settings such as in Africa where the incidence has been on the rise. Despite major advancements and newer therapeutic modalities over the last decade, an insi ght into the real-life, day to day challenges in low resourced settings reveal an interplay between the difficulty in obtaining these drugs and use of alternative traditional indigenous agents. We report the case of a 50 year old immunocompetent male who presented with chroni c and extensive well demarcated plaques covered with silver-white scales occupying about 61% of his body surface area. Patient was however lost to follow up for about 8 months during which time, the lesions responded to some unknown homemade indigenous medications which was preferred to a systemic medication. Paramount importance on proper counselling and the need to retain patients in care is warranted by physicians and allied health personnel. Also, incentives aimed at subsidizing the newer systemic agents for patients in low resourced cohorts will go a lo ng way to combat this multi-faceted disorder which is often unrecognized and under diagnosed.

Cardiovascular Journal of Africa, 2018

BMC pediatrics, Mar 13, 2018

Toxic epidermal necrolysis (TEN) is a rare life threatening dermatological disorder characterized... more Toxic epidermal necrolysis (TEN) is a rare life threatening dermatological disorder characterized by extensive epidermal detachment and erosion of mucous membranes. It is typically a side effect of some medications. Nevirapine, a nonnucleoside reverse transcriptase inhibitor (NNRTI) is one of the frequently used components of highly active antiretroviral therapy (HAART). Skin rash is its common adverse reaction, usually mild and rarely progressing to TEN. Ophthalmic involvement is common as well but rarely progresses to blindness especially in the pediatric population. We report the case of a 3 year 5 month old child diagnosed with HIV who developed TEN 8 days after starting a Nevirapine based HAART regimen. Drug withdrawal and supportive treatment alone were the modalities employed to achieve complete re-epithelization of lesions. Patient was lost to follow-up 6 months after being in care and was only seen 3 years later with total loss of vision. Blindness, though rare, can be a lo...

Journal of medical case reports, Jan 16, 2018

Endemic Burkitt's lymphoma is found predominantly in malaria holoendemic zones, typically in ... more Endemic Burkitt's lymphoma is found predominantly in malaria holoendemic zones, typically in the tropical rain forest of Africa. It usually presents as an extra-nodal tumour in children and young adults with predilection for jaws and soft tissues of the abdomen. Clinical features depend on the primary tumour site, extent of the disease and histologic subtype. Acute blindness as a presentation sign is rare. A 13 year old African female presented to our facility with a 3 week history of painful abdominal distention, and loss of vision of the left eye. On examination, there was a huge abdominopelvic mass, left breast mass and complete blindness of the left eye associated with mydriatic pupils non-responsive to light. An abdominal ultrasound showed a huge hypoechoic mass arising from the pelvis and protruding into the abdomen. The jaws, teeth and maxilla were all normal. A fine needle aspiration done was negative for malignant cells. A presumptive diagnosis of Burkitt's lymphoma...

Maternal health, neonatology and perinatology, 2017

Early initiation of antenatal care visits is an essential component of services to improving mate... more Early initiation of antenatal care visits is an essential component of services to improving maternal and new born health. The Cameroonian Demographic and Health Survey conducted in 2011 indicated that only 34% of pregnant women start antenatal care in the first trimester. However, detailed study to identify factors associated with late initiation of care has not been conducted in Cameroon. The aim of this study was to assess the prevalence of late booking first ANC visit amongst attendance of first ANC and the determinants of late first ANC in Douala general hospital. It was a cross sectional analytic study over the period of 5 months in Douala general hospital. The study subjects were pregnant women visiting the facilities for the first time during the index pregnancy. Data were collected using pre-tested questionnaire. Logistic regression analysis was done to identify factors associated with late first ANC with the level of significance set at 0.05. A total of 293 women participa...

The International Annals of Medicine, 2017

Background: Bladder exstrophy is a rare congenital malformation of the genitourinary system usual... more Background: Bladder exstrophy is a rare congenital malformation of the genitourinary system usually associated with other malformations. Case summary: We report the case of a new born delivered vaginally at term with bladder exstrophy-epispadias complex. Three antenatal ultrasounds scan done all missed the diagnosis. Medical management was done, and the patient was discharged against medical advice 48 hours later with surgical intervention deferred due to lack of consent. Conclusion: The diagnosis and management of bladder exstrophyepispadias complex remains a challenge in our surroundings. Radiologists should maintain a high index of suspicion during antenatal ultrasounds. Reporting: Care 2016 guideline.

BMC Public Health, 2017

Background: Adequate awareness of cardiovascular diseases (CVD) and their risk factors may help r... more Background: Adequate awareness of cardiovascular diseases (CVD) and their risk factors may help reduce the population's exposure to modifiable risk factors and thereby contribute to prevention and control strategies. There is limited data on knowledge among the general population in sub-Saharan Africa regarding CVD and risk factors. We aimed to assess the population awareness (and associated factors) of CVD types and risk factors in Buea, Cameroon. Methods: This was a community-based cross-sectional study conducted in 2016 among randomly selected adults (>18 years). Data on socio-demographic characteristics, knowledge about CVD types, their risk factors and warning signs for CVD events (stroke and heart attack) were acquired using a self-administered questionnaire. Logistic regression analysis was used to investigate factors associated with moderate-to-good knowledge. Results: Of the 1162 participants (61.7% women, mean age 32 years), 52.5% had overall poor knowledge (mean score 12.1 on total of 25) on CVD with only about a quarter correctly identifying types of CVD. Overall, 36, 63 and 45% were unaware of CVD risk factors, warning signs of heart attack and stroke respectively. In multivariable analysis; high level of education (aOR = 2.26 (1.69-3.02), p < 0.0001), high monthly income (aOR = 1.64 (1.07-2.51), p = 0.023), having a family history of CVD (aOR = 1.59 (1.21-2.09), p = 0.001) and being a former smoker (aOR = 1. 11 (1.02-1.95), p = 0.043) were associated with moderate-to-good knowledge. Conclusions: There exists a significant gap in population awareness about CVDs in Cameroon and this is similar to previous reports. Cost-effective community health education interventions taking into account socioeconomic status may be beneficial in this setting.

BMC Public Health, 2015

Background: Adequate knowledge and practices on post exposure prophylaxis (PEP) for HIV among hea... more Background: Adequate knowledge and practices on post exposure prophylaxis (PEP) for HIV among health care providers are crucial for HIV prevention. However there is limited data on PEP knowledge and practice from developing countries where the burden of HIV infection continues to increase. We assessed the knowledge of clinical medical students on PEP, their practices in response to occupational exposure to HIV, as well as the determinants of good knowledge on PEP. Methods: A cross-sectional study was conducted in November 2014 involving 154 consecutively recruited clinical medical students (4 th-6 th year undergraduates). Data were acquired using a structured questionnaire. Knowledge on PEP was assessed using a questionnaire comprising 25 questions and categorized as: good (20 or more correct answers), moderate (13-19 correct answers) and poor (12 or fewer correct answers). Results: For the 154 students included (57.8 % being male), the mean age was 23.2 ± 2.4 years, and 89 % had heard about PEP for HIV. The majority of students had moderate (61.7 %) and poor (32.5 %) knowledge on PEP. Overall knowledge score increased with increasing level of studies (p < 0.05). Only 10 (6.5 %) had had previous training on PEP, most of whom were senior level students (p = 0.01). Fifty-four students (35.1 %) knew the appropriate duration of PEP and this awareness increased with level of studies (p = 0.001). Of the 81 (52.6 %) who reported occupational exposure to HIV in the past, only 4 (4.9 %) received PEP. Conclusions: Overall, knowledge on PEP among clinical medical students in this setting was non-optimal with very low uptake PEP. Intensification of HIV curricula to involve PEP as well as continuous medical education programs and workshops are potential avenues to improve awareness in this vulnerable population.

Scientific Reports, Dec 19, 2022

Ideal Cardiovascular Health (CVH) is a concept defined by the American Heart Association (AHA) as... more Ideal Cardiovascular Health (CVH) is a concept defined by the American Heart Association (AHA) as part of its 2020 Impact Goals. Until now, changes in ideal CVH have been poorly evaluated in Sub-Saharan African populations. We aimed to investigate changes in the prevalence of ideal CVH and its components in a population of Malawian adults. Secondary analysis was done on cross-sectional data from 2009 to 2017, obtained from the Malawi STEPS surveys which included 5730 participants aged 25-64 years. CVH metrics categorized into "ideal (6-7 ideal metrics)", "intermediate (3-5 ideal metrics)" and "poor (0-2 ideal metrics)" were computed using blood pressure, body mass index (BMI), fasting glycaemia, fruit and vegetable intake, physical activity, smoking, and total cholesterol. Sampling weights were used to account for the sampling design, and all estimates were standardised by age and sex using the direct method. The mean participant age across both periods was 40.1 ± 12.4 years. The prevalence of meeting ≥ 6 ideal CVH metrics increased substantially from 9.4% in 2009 to 33.3% in 2017, whereas having ≤ 2 ideal CVH metrics decreased from 7.6% to 0.5% over this time. For the individual metrics, desirable levels of smoking, fruit and vegetable intake, physical activity, blood pressure (BP), total cholesterol and fasting glucose all increased during the study period whilst achievable levels of BMI (< 25 kg/m 2) declined. From 2009 to 2017, the mean number of ideal CVH metrics was higher in women compared to men (from 2.1% to 5.1% vs 2.0% to 5.0%). However, poor levels of smoking and fruit and vegetable intake were higher in men compared to women (from 27.9% to 23.6% vs. 7.4%% to 1.9% , and from 33.7% to 42.9% vs 30.8% to 34.6%, respectively). Also, whilst achievable levels of BMI rose in men (from 84.4% to 86.2%) the proportion reduced in women (from 72.1% to 67.5%). Overall, CVH improved in Malawian adults from 2009 to 2017 and was highest in women. However, the prevalence of poor fruit and vegetable intake, and poor smoking remained high in men whilst optimal levels of BMI was declined in women. To improve this situation, individual and population-based strategies that address body mass, smoking and fruit and vegetable intake are warranted for maximal health gains in stemming the development of cardiovascular events. Cardiovascular disease (CVD) remains the leading cause of premature mortality (deaths before age 70 years) and rising healthcare costs worldwide. The major drivers of CVD include behavioral, cardiometabolic, environmental, and social risk factors, most of which are modifiable 1. Although the age-standardized mortality rate of CVD is declining in most high-income countries (HICs), similar changes have not been observed in Sub-Saharan Africa (SSA) where people with CVDs are significantly younger compared to their HIC counterparts, posing a threat to socioeconomic development 1-3. Primary prevention has therefore been increasingly emphasized as a key strategy to reduce mortality and morbidity from CVDs in SSA 2,4. The American Heart Association (AHA) introduced the concept of ideal cardiovascular health (CVH) in 2010 in a bid to achieve the goal of reducing deaths from heart disease and stroke by 20% by the year 2020. In their definition, CVH includes a number of metrics consisting four behavioral [smoking, body mass index (BMI), physical

BMJ Nutrition, Prevention & Health

IntroductionA higher number of ideal cardiovascular health (CVH) metrics is associated with a low... more IntroductionA higher number of ideal cardiovascular health (CVH) metrics is associated with a lower risk of cardiovascular-related and all-cause mortality. However, the change in CVH metrics has rarely been studied in sub-Saharan Africa. We investigated the level and changes of CVH metrics and their correlates among Beninese adults between 2008 and 2015.MethodsSecondary analysis was performed on data obtained from Benin’s 2008 and 2015 WHO Stepwise surveys (STEPS). In total, 3617 and 3768 participants aged 25–64 years were included from both surveys, respectively. CVH metrics were assessed using the American Heart Association definition, which categorised smoking, fruit and vegetable consumption, physical activity, body mass index (BMI), blood pressure (BP), total cholesterol (TC) and glycaemia into ‘ideal’, ‘intermediate’ and ‘poor’ CVH. The prevalence of ideal CVH metrics was standardised using the age and sex structure of the 2013 population census.ResultsFew participants met all...

International Journal of Environmental Research and Public Health

Geographical disparities in abdominal obesity (AO) exist in low-income countries due to major dem... more Geographical disparities in abdominal obesity (AO) exist in low-income countries due to major demographic and structural changes in urban and rural areas. We aimed to investigate differences in the urban–rural prevalence of AO in the Malawi population between 2009 and 2017. We conducted a secondary analysis of data from the Malawi 2009 and 2017 STEPS surveys. AO (primary outcome) and very high waist circumference (secondary outcome) were defined using WHO criteria. Prevalence estimates of AO and very high waist circumference (WC) were standardized by age and sex using the age and sex structure of the adult population in Malawi provided by the 2018 census. A modified Poisson regression analysis adjusted for sociodemographic covariates was performed to compare the outcomes between the two groups (urban versus rural). In total, 4708 adults in 2009 and 3054 adults in 2017 aged 25–64 were included in the study. In 2009, the age–sex standardized prevalence of AO was higher in urban than r...

Background: Bladder exstrophy-epispadias complex (BEEC) is a rare congenital malformation of the ... more Background: Bladder exstrophy-epispadias complex (BEEC) is a rare congenital malformation of the genitourinary system usually associated with other malformations. Case summary: We report the case of a new born delivered vaginally at 39 weeks and 2 days of gestation with BEEC. Three prenatal ultrasound scans missed the diagnosis. Medical management was provided and the patient was discharged against medical advice 48 hours later upon refusing surgical intervention. Conclusion: The diagnosis and management of BEEC is a challenge in sub-Sahara Africa. Radiologists doing prenatal ultrasounds should check routinely to exclude foetal anomalies. Reporting: Care 2016 guideline.

Health Science Reports, 2021

Introduction: Several anthropometric measurements are variably recommended to assess adiposity in... more Introduction: Several anthropometric measurements are variably recommended to assess adiposity in routine practice, with less agreement on their comparative performance. We assessed and compared the relationship of seven anthropometric measures of adiposity-waist circumference (WC), waist-to-height ratio (WHtR), Body Mass Index (BMI), Ponderal Index (PI), Conicity Index (C index), A Body Shape Index (ABSI), and Body Roundness Index (BRI)-with blood pressure (BP) levels and prevalent hypertension in adult Cameroonians. Methods: Data were collected as Cameroon's contribution to the global May Measurement Month 2017(MMM17) survey. Participants were nonpregnant adults, who had no BP measurement in the past year and with no prior hypertension diagnosis. Hypertension was defined as systolic BP ≥140 mm Hg and/or diastolic ≥90 mm Hg. Odds ratios (ORs) for the presence of hypertension per 1 SD increase in each adiposity metrics were estimated in separate logistic regression models. Assessment and comparison of discrimination used the area under the receiver operating characteristics curve (AUC) and nonparametric methods. Results: We included 14 424 participants (8210 [58.25%] female; 39.84 ± 14.33 years). There was a graded association between measures of adiposity and prevalent screen-detected (newly diagnosed) hypertension, with effect sizes being mostly within the same range across measures of adiposity. AUC for hypertension prediction ranged from 0.

Journal of Medical Case Reports, 2018

Background: Progestin-only subdermal implants are one of the most effective contraceptive methods... more Background: Progestin-only subdermal implants are one of the most effective contraceptive methods. Anembryonic pregnancy is not reported as a possible outcome in cases of contraceptive failure of these products. We present a rare case of anembryonic pregnancy occurring in a woman with levonorgestrel-releasing implant (JADELLE®). Case presentation: A 31-year-old Cameroonian (black African) housewife with a JADELLE® implant for 13 months, consulted at our hospital for a 1-month history of pelvic pain, prolonged menstrual bleeding, and spotting. She had a last normal menstrual period 8 weeks 1 day prior to presentation. On examination, there was suprapubic tenderness and blood trickling from her cervix. Despite a negative qualitative urine pregnancy test, an empty intrauterine gestational sac with mean sac diameter of 28 mm was visualized on pelvic ultrasound. Dilation and curettage with suction was done and she had complete relief from symptoms. Conclusion: This case report highlights the possibility of anembryonic pregnancy occurring in women using the levonorgestrel-releasing subdermal implant (JADELLE®).

Journal of Medical Case Reports, 2018

Background: Cutaneous adverse reactions to medications are extremely common and display character... more Background: Cutaneous adverse reactions to medications are extremely common and display characteristic clinical morphology. A fixed drug eruption is a cutaneous adverse drug reaction due to type IV or delayed cell-mediated hypersensitivity. Ivermectin, a broad-spectrum anti-parasitic compound, has been an essential component of public health campaigns targeting the control of two devastating neglected tropical diseases: onchocerciasis (river blindness) and lymphatic filariasis. Case presentation: We report the case of a 75-year-old Cameroonian man of the Bamileke ancestry who developed multiple fixed drug eruptions a few hours following ivermectin intake that worsened with repeated drug consumption. Discontinuation of the drug, counselling, systemic steroids, and orally administered antihistamines were the treatment modalities employed. Marked regression of the lesions ensued with residual hyperpigmentation and dyschromia. Conclusion: Keen observation on the part of physicians is mandatory during the administration of ivermectin for quick recognition and prevention of this adverse drug reaction.

BMC Cardiovascular Disorders, 2018

Background: Hypertension is a challenging public health problem with a huge burden in the develop... more Background: Hypertension is a challenging public health problem with a huge burden in the developing countries. Non-adherence to antihypertensive treatment is a big obstacle in blood pressure (BP) control and favours disease progression to complications. Our objectives were to determine the rate of non-adherence to antihypertensive pharmacotherapy, investigate factors associated with non-adherence, and to assess the association between nonadherence and BP control in the Buea Health District (BHD), Cameroon. Methods: A community-based cross-sectional study using stratified cluster sampling was conducted in the BHD from November 2013-March 2014. Eligible consenting adult participants had their BP measured and classified using the Joint National Committee VII criteria. The Morisky medication adherence scale was used to assess adherence to BP lowering medication. Multivariable logistic regression models were used to predict non-adherence. Results: One hundred and eighty-three participants were recruited with mean age of 55.9 years. Overall, 67.7% (95% CI: 59.8-73.6%) of participants were non-adherent to their medications. After adjusting for age, sex and other covariates, forgetfulness (aOR = 7.9, 95%CI: 3.0-20.8), multiple daily doses (aOR = 2.5, 95%CI: 1.2-5.6), financial constraints (aOR = 2.8, 95%CI: 1.1-6.9) and adverse drug effects (aOR = 7.6, 95%CI: 1.7-33.0) independently predicted non-adherence to antihypertensive medication. BP was controlled in only 21.3% of participants and was better in those who were adherent to medication (47.5% versus 8.2%, p < 0.01). Conclusion: At least two of every three hypertensive patients in the Buea Health District are non-adherent to treatment. Forgetfulness, multiple daily doses of medication, financial constraints and medication adverse effects are the major predictors of non-adherence in hypertensive patients. These factors should be targeted to improve adherence and BP control, which will contribute to stem hypertension-related morbidity and mortality.

BMC Endocrine Disorders, 2019

Background: Diabetes mellitus is a growing cause of disease burden globally. Its management is mu... more Background: Diabetes mellitus is a growing cause of disease burden globally. Its management is multifaceted, and adherence to pharmacotherapy is known to play a significant role in glycaemic control. Data on medication adherence among affected patients is unknown in Cameroon. In this study, the level of adherence and factors influencing non-adherence to antidiabetic medication among patients with type-2 diabetes was assessed. Methods: A hospital-based cross-sectional study among adult patients receiving care in the diabetic clinics of the Limbe and Bamenda Regional Hospitals in Cameroon was conducted. Medication adherence was assessed using the Medication Compliance Questionnaire (MCQ). Factors associated with non-adherence to medication were determined using basic and adjusted multivariable logistic regression models. Results: A total of 195 patients with type 2 diabetes were recruited. The prevalence of non-adherence to medication was 54.4% [95% confidence interval (CI): 47.1-61.5%]. In multivariable analysis, age > 60 years (aO.R. = 0.48, 95% CI: 0.25-0.94), alcohol consumption (aO.R. = 2.13, 95% CI: 1.10-4.14) and insulin alone therapy (aO.R. = 2.85, 95% CI: 1.01-8.08) were associated with non-adherence. Patients attributed their non-adherence to forgetfulness (55.6%), lack of finances (38.2%) and disappearance of symptoms (14.2%). Conclusions: Adherence to anti-diabetic medication is poor in this study with more than half of participants being nonadherent. Urgent interventions are required to tackle this problem in combined efforts to stem this looming diabetes epidemic.

Pan African Medical Journal, 2019

Plaque-type psoriasis is a major dermatosis with significant effects on quality of life. Case com... more Plaque-type psoriasis is a major dermatosis with significant effects on quality of life. Case complexity is often high in low-resourced settings such as in Africa where the incidence has been on the rise. Despite major advancements and newer therapeutic modalities over the last decade, an insi ght into the real-life, day to day challenges in low resourced settings reveal an interplay between the difficulty in obtaining these drugs and use of alternative traditional indigenous agents. We report the case of a 50 year old immunocompetent male who presented with chroni c and extensive well demarcated plaques covered with silver-white scales occupying about 61% of his body surface area. Patient was however lost to follow up for about 8 months during which time, the lesions responded to some unknown homemade indigenous medications which was preferred to a systemic medication. Paramount importance on proper counselling and the need to retain patients in care is warranted by physicians and allied health personnel. Also, incentives aimed at subsidizing the newer systemic agents for patients in low resourced cohorts will go a lo ng way to combat this multi-faceted disorder which is often unrecognized and under diagnosed.

Cardiovascular Journal of Africa, 2018

BMC pediatrics, Mar 13, 2018

Toxic epidermal necrolysis (TEN) is a rare life threatening dermatological disorder characterized... more Toxic epidermal necrolysis (TEN) is a rare life threatening dermatological disorder characterized by extensive epidermal detachment and erosion of mucous membranes. It is typically a side effect of some medications. Nevirapine, a nonnucleoside reverse transcriptase inhibitor (NNRTI) is one of the frequently used components of highly active antiretroviral therapy (HAART). Skin rash is its common adverse reaction, usually mild and rarely progressing to TEN. Ophthalmic involvement is common as well but rarely progresses to blindness especially in the pediatric population. We report the case of a 3 year 5 month old child diagnosed with HIV who developed TEN 8 days after starting a Nevirapine based HAART regimen. Drug withdrawal and supportive treatment alone were the modalities employed to achieve complete re-epithelization of lesions. Patient was lost to follow-up 6 months after being in care and was only seen 3 years later with total loss of vision. Blindness, though rare, can be a lo...

Journal of medical case reports, Jan 16, 2018

Endemic Burkitt's lymphoma is found predominantly in malaria holoendemic zones, typically in ... more Endemic Burkitt's lymphoma is found predominantly in malaria holoendemic zones, typically in the tropical rain forest of Africa. It usually presents as an extra-nodal tumour in children and young adults with predilection for jaws and soft tissues of the abdomen. Clinical features depend on the primary tumour site, extent of the disease and histologic subtype. Acute blindness as a presentation sign is rare. A 13 year old African female presented to our facility with a 3 week history of painful abdominal distention, and loss of vision of the left eye. On examination, there was a huge abdominopelvic mass, left breast mass and complete blindness of the left eye associated with mydriatic pupils non-responsive to light. An abdominal ultrasound showed a huge hypoechoic mass arising from the pelvis and protruding into the abdomen. The jaws, teeth and maxilla were all normal. A fine needle aspiration done was negative for malignant cells. A presumptive diagnosis of Burkitt's lymphoma...

Maternal health, neonatology and perinatology, 2017

Early initiation of antenatal care visits is an essential component of services to improving mate... more Early initiation of antenatal care visits is an essential component of services to improving maternal and new born health. The Cameroonian Demographic and Health Survey conducted in 2011 indicated that only 34% of pregnant women start antenatal care in the first trimester. However, detailed study to identify factors associated with late initiation of care has not been conducted in Cameroon. The aim of this study was to assess the prevalence of late booking first ANC visit amongst attendance of first ANC and the determinants of late first ANC in Douala general hospital. It was a cross sectional analytic study over the period of 5 months in Douala general hospital. The study subjects were pregnant women visiting the facilities for the first time during the index pregnancy. Data were collected using pre-tested questionnaire. Logistic regression analysis was done to identify factors associated with late first ANC with the level of significance set at 0.05. A total of 293 women participa...

The International Annals of Medicine, 2017

Background: Bladder exstrophy is a rare congenital malformation of the genitourinary system usual... more Background: Bladder exstrophy is a rare congenital malformation of the genitourinary system usually associated with other malformations. Case summary: We report the case of a new born delivered vaginally at term with bladder exstrophy-epispadias complex. Three antenatal ultrasounds scan done all missed the diagnosis. Medical management was done, and the patient was discharged against medical advice 48 hours later with surgical intervention deferred due to lack of consent. Conclusion: The diagnosis and management of bladder exstrophyepispadias complex remains a challenge in our surroundings. Radiologists should maintain a high index of suspicion during antenatal ultrasounds. Reporting: Care 2016 guideline.

BMC Public Health, 2017

Background: Adequate awareness of cardiovascular diseases (CVD) and their risk factors may help r... more Background: Adequate awareness of cardiovascular diseases (CVD) and their risk factors may help reduce the population's exposure to modifiable risk factors and thereby contribute to prevention and control strategies. There is limited data on knowledge among the general population in sub-Saharan Africa regarding CVD and risk factors. We aimed to assess the population awareness (and associated factors) of CVD types and risk factors in Buea, Cameroon. Methods: This was a community-based cross-sectional study conducted in 2016 among randomly selected adults (>18 years). Data on socio-demographic characteristics, knowledge about CVD types, their risk factors and warning signs for CVD events (stroke and heart attack) were acquired using a self-administered questionnaire. Logistic regression analysis was used to investigate factors associated with moderate-to-good knowledge. Results: Of the 1162 participants (61.7% women, mean age 32 years), 52.5% had overall poor knowledge (mean score 12.1 on total of 25) on CVD with only about a quarter correctly identifying types of CVD. Overall, 36, 63 and 45% were unaware of CVD risk factors, warning signs of heart attack and stroke respectively. In multivariable analysis; high level of education (aOR = 2.26 (1.69-3.02), p < 0.0001), high monthly income (aOR = 1.64 (1.07-2.51), p = 0.023), having a family history of CVD (aOR = 1.59 (1.21-2.09), p = 0.001) and being a former smoker (aOR = 1. 11 (1.02-1.95), p = 0.043) were associated with moderate-to-good knowledge. Conclusions: There exists a significant gap in population awareness about CVDs in Cameroon and this is similar to previous reports. Cost-effective community health education interventions taking into account socioeconomic status may be beneficial in this setting.

BMC Public Health, 2015

Background: Adequate knowledge and practices on post exposure prophylaxis (PEP) for HIV among hea... more Background: Adequate knowledge and practices on post exposure prophylaxis (PEP) for HIV among health care providers are crucial for HIV prevention. However there is limited data on PEP knowledge and practice from developing countries where the burden of HIV infection continues to increase. We assessed the knowledge of clinical medical students on PEP, their practices in response to occupational exposure to HIV, as well as the determinants of good knowledge on PEP. Methods: A cross-sectional study was conducted in November 2014 involving 154 consecutively recruited clinical medical students (4 th-6 th year undergraduates). Data were acquired using a structured questionnaire. Knowledge on PEP was assessed using a questionnaire comprising 25 questions and categorized as: good (20 or more correct answers), moderate (13-19 correct answers) and poor (12 or fewer correct answers). Results: For the 154 students included (57.8 % being male), the mean age was 23.2 ± 2.4 years, and 89 % had heard about PEP for HIV. The majority of students had moderate (61.7 %) and poor (32.5 %) knowledge on PEP. Overall knowledge score increased with increasing level of studies (p < 0.05). Only 10 (6.5 %) had had previous training on PEP, most of whom were senior level students (p = 0.01). Fifty-four students (35.1 %) knew the appropriate duration of PEP and this awareness increased with level of studies (p = 0.001). Of the 81 (52.6 %) who reported occupational exposure to HIV in the past, only 4 (4.9 %) received PEP. Conclusions: Overall, knowledge on PEP among clinical medical students in this setting was non-optimal with very low uptake PEP. Intensification of HIV curricula to involve PEP as well as continuous medical education programs and workshops are potential avenues to improve awareness in this vulnerable population.