Behrooz Nazari - Academia.edu (original) (raw)

Papers by Behrooz Nazari

Research paper thumbnail of Does Coronavirus Disease Affect Sleep Disorders in the Third Trimester of Pregnancy in Women With Low Back Pain?

International Journal of Women's Health and Reproduction Sciences

Objectives: Many factors such as stress and psychological tension affect the mental and physical ... more Objectives: Many factors such as stress and psychological tension affect the mental and physical health of pregnant women in the third trimester during the coronavirus pandemic. These factors can cause severe complications such as sleep disorders and low back pain. Therefore, this study focused on investigating sleep disorders in women by diagnosing low back pain in pregnant women with coronavirus and the affecting factors. Materials and Methods: This descriptive-analytical study was performed during the four months ending July 5, 2020 with the participation of 40 pregnant women (with coronavirus disease detected in the last trimester of pregnancy) with a diagnosis of low back pain in Tabriz (Iran) using a random sampling technique. Demographic data, anxiety and depression, Petersburg’s sleep quality, factors affecting sleep quality, and the severity of back pain (visual analog scale) were electronically collected and analyzed using SPSS 20 by ANOVA and multivariate regression. Resu...

Research paper thumbnail of Genetic and environmental relationships among milk yield, persistency of milk yield, somatic cell count and calving interval in Holstein cows

Revista Colombiana de Ciencias Pecuarias

Background: Fertility and health traits, other than production traits, have a major role in the p... more Background: Fertility and health traits, other than production traits, have a major role in the profitability of dairy cattle. Therefore, it seems necessary to include the afore mentioned traits in breeding programs. Hence, genetic parameters are needed to establish breeding plans. Objective: To estimate heritabilities as well as genetic and environmental relationships among total milk yield (TMY), persistency of milk yield (PMY), mean somatic cell count (SCC), mean loge somatic cell count (LnSCC), standard deviation of somatic cell count (stdSCC), and calving interval (CI) using two-trait and multi-trait analyses in Iranian Holstein. Methods: The dataset consisted of 25,883 first lactation records collected from 2002 to 2007 in 97 Holstein dairy herds in Iran. Four criteria of persistency of milk yield (PMY) were calculated using the Wood's gamma function. The WOMBAT1.0 software was used to estimate the (co)variance components using the Average Information Restricted Maximum Li...

Research paper thumbnail of Prevalence and Risk Factors for Low Back Pain in Primiparous Women Visiting Maternity Hospitals During Different Months of Pregnancy

International Journal of Women's Health and Reproduction Sciences

Objectives: Pregnancy is one of the pleasant periods of a woman’s life that turns into a bitter e... more Objectives: Pregnancy is one of the pleasant periods of a woman’s life that turns into a bitter experience by common complications such as low back pain (LBP). Due to prevailing climatic conditions in Iran and the harmful social norms concerning Iranian women, the present study aimed to investigate the prevalence of pregnancy-related LBP and its influencing factors during different months of pregnancy. Materials and Methods: This descriptive cross-sectional study was conducted in 2019 on 550 pregnant women for LBP who were eligible based on the inclusion criteria. The research instruments were a demographic questionnaire, a LBP examination, and the visual analog scale (VAS). The obtained data were analyzed using the chi-square test, the independent t test, and multiple logistic regression in SPSS 20, and a P<0.05 was considered statistically significant. Results: The prevalence of LBP was 67.27%, and the most important factors influencing pregnancy-related LBP were maternal age (...

Research paper thumbnail of Comparison of the cheese-wiring effects among three sutures used in rotator cuff repair

International Journal of Shoulder Surgery, 2014

Research paper thumbnail of Calculating daughter yield deviations for production traits in Holstein cattle using repeatability animal and random regression test day models

Livestock Science, 2013

ABSTRACT

Research paper thumbnail of The Efficacy and Complications of 2-Hole 3.5 mm Reconstruction Plates and 4 mm Noncanulated Cancellous Screws for Temporary Hemiepiphysiodesis Around the Knee

Journal of Pediatric Orthopaedics, 2013

Persistent angular deformities around the knee can lead to growth-plate damage in childhood and o... more Persistent angular deformities around the knee can lead to growth-plate damage in childhood and osteoarthritis in adulthood. The treatment options include osteotomy and hemiepiphysiodesis. Tension-band plate hemiepiphysiodesis with 8-plate is an effective way to correct these deformities. However, its high cost makes it less available in many countries. In the present series, we have used 3.5 mm reconstruction plates for tension-band temporary hemiepiphysiodesis. Twenty-one patients with bilateral angular deformities of the knee (42 extremities) underwent temporary hemiepiphysiodesis with 3.5 mm reconstruction plates. The diagnosis, BMI, weight, amount of correction of the deformity age, and device failure were analyzed. The mean follow-up period after plate removal was 17 months (ranging from 8 to 24 mo). The mean age of the patients was 10 years and 3 months (± 2 y and 10 mo). Complete correction of the deformities was achieved in 86% of patients. Of the 58 plate and screw constructs, 10% had screw breakage. Patients with genu valgum had 2 screw failures (6.25%), but in the genu varum group there were 4 screw failures (40%). Of the 3 patients who did not have complete correction of the deformities, 2 had mucopolysaccharidosis and 1 was nearing skeletal maturity (16 y old). The age of the patient, body weight, BMI, and degrees of angulation did not have any statistically significant correlation with the screw failure. Screw failures in female patients were more common than in male patients. All implant failures occurred in idiopathic patients. The efficacy of 3.5 mm reconstruction plates for temporary hemiepiphysiodesis around the knee is similar to that of 8-plates. However, the reconstruction plates have a lower cost and are easily available. Noncanulated 3.5 or 4.5 mm cortical screws seem to be superior to 4 mm noncanulated cancellous screws. Level 3.

Research paper thumbnail of Comparison of the cheese-wiring effects among three sutures used in rotator cuff repair

International journal of shoulder surgery, 2014

The goal of this study was to compare the cheese-wiring effects of three sutures with different c... more The goal of this study was to compare the cheese-wiring effects of three sutures with different coefficients of friction. Sixteen human cadaveric shoulders were dissected to expose the distal supraspinatus and infraspinatus muscle tendons. Three sutures were stitched through the tendons: #2 Orthocord(™) suture (reference #223114, DePuy Mitek, Inc., Raynham, MA), #2 ETHIBOND* EXCEL Suture, and #2 FiberWire(®) suture (FiberWire(®), Arthrex, Naples, FL). The sutures were pulled by cyclic axial forces from 10 to 70 N at 1 Hz for 1000 cycles through a MTS machine. The cut-through distance on the tendon was measured with a digital caliper. The cut-through distance in the supraspinatus tendons (mean ± standard deviation, n = 12) were 2.9 ± 0.6 mm for #2 Orthocord(™) suture, 3.2 ± 1.2 mm for #2 ETHIBOND* suture, and 4.2 ± 1.7 mm for #2 FiberWire(®) suture. The differences were statistically significant analyzing with analysis of variance (P = 0.047) and two-tailed Student's t-test, whic...

Research paper thumbnail of Does Coronavirus Disease Affect Sleep Disorders in the Third Trimester of Pregnancy in Women With Low Back Pain?

International Journal of Women's Health and Reproduction Sciences

Objectives: Many factors such as stress and psychological tension affect the mental and physical ... more Objectives: Many factors such as stress and psychological tension affect the mental and physical health of pregnant women in the third trimester during the coronavirus pandemic. These factors can cause severe complications such as sleep disorders and low back pain. Therefore, this study focused on investigating sleep disorders in women by diagnosing low back pain in pregnant women with coronavirus and the affecting factors. Materials and Methods: This descriptive-analytical study was performed during the four months ending July 5, 2020 with the participation of 40 pregnant women (with coronavirus disease detected in the last trimester of pregnancy) with a diagnosis of low back pain in Tabriz (Iran) using a random sampling technique. Demographic data, anxiety and depression, Petersburg’s sleep quality, factors affecting sleep quality, and the severity of back pain (visual analog scale) were electronically collected and analyzed using SPSS 20 by ANOVA and multivariate regression. Resu...

Research paper thumbnail of Genetic and environmental relationships among milk yield, persistency of milk yield, somatic cell count and calving interval in Holstein cows

Revista Colombiana de Ciencias Pecuarias

Background: Fertility and health traits, other than production traits, have a major role in the p... more Background: Fertility and health traits, other than production traits, have a major role in the profitability of dairy cattle. Therefore, it seems necessary to include the afore mentioned traits in breeding programs. Hence, genetic parameters are needed to establish breeding plans. Objective: To estimate heritabilities as well as genetic and environmental relationships among total milk yield (TMY), persistency of milk yield (PMY), mean somatic cell count (SCC), mean loge somatic cell count (LnSCC), standard deviation of somatic cell count (stdSCC), and calving interval (CI) using two-trait and multi-trait analyses in Iranian Holstein. Methods: The dataset consisted of 25,883 first lactation records collected from 2002 to 2007 in 97 Holstein dairy herds in Iran. Four criteria of persistency of milk yield (PMY) were calculated using the Wood's gamma function. The WOMBAT1.0 software was used to estimate the (co)variance components using the Average Information Restricted Maximum Li...

Research paper thumbnail of Prevalence and Risk Factors for Low Back Pain in Primiparous Women Visiting Maternity Hospitals During Different Months of Pregnancy

International Journal of Women's Health and Reproduction Sciences

Objectives: Pregnancy is one of the pleasant periods of a woman’s life that turns into a bitter e... more Objectives: Pregnancy is one of the pleasant periods of a woman’s life that turns into a bitter experience by common complications such as low back pain (LBP). Due to prevailing climatic conditions in Iran and the harmful social norms concerning Iranian women, the present study aimed to investigate the prevalence of pregnancy-related LBP and its influencing factors during different months of pregnancy. Materials and Methods: This descriptive cross-sectional study was conducted in 2019 on 550 pregnant women for LBP who were eligible based on the inclusion criteria. The research instruments were a demographic questionnaire, a LBP examination, and the visual analog scale (VAS). The obtained data were analyzed using the chi-square test, the independent t test, and multiple logistic regression in SPSS 20, and a P<0.05 was considered statistically significant. Results: The prevalence of LBP was 67.27%, and the most important factors influencing pregnancy-related LBP were maternal age (...

Research paper thumbnail of Comparison of the cheese-wiring effects among three sutures used in rotator cuff repair

International Journal of Shoulder Surgery, 2014

Research paper thumbnail of Calculating daughter yield deviations for production traits in Holstein cattle using repeatability animal and random regression test day models

Livestock Science, 2013

ABSTRACT

Research paper thumbnail of The Efficacy and Complications of 2-Hole 3.5 mm Reconstruction Plates and 4 mm Noncanulated Cancellous Screws for Temporary Hemiepiphysiodesis Around the Knee

Journal of Pediatric Orthopaedics, 2013

Persistent angular deformities around the knee can lead to growth-plate damage in childhood and o... more Persistent angular deformities around the knee can lead to growth-plate damage in childhood and osteoarthritis in adulthood. The treatment options include osteotomy and hemiepiphysiodesis. Tension-band plate hemiepiphysiodesis with 8-plate is an effective way to correct these deformities. However, its high cost makes it less available in many countries. In the present series, we have used 3.5 mm reconstruction plates for tension-band temporary hemiepiphysiodesis. Twenty-one patients with bilateral angular deformities of the knee (42 extremities) underwent temporary hemiepiphysiodesis with 3.5 mm reconstruction plates. The diagnosis, BMI, weight, amount of correction of the deformity age, and device failure were analyzed. The mean follow-up period after plate removal was 17 months (ranging from 8 to 24 mo). The mean age of the patients was 10 years and 3 months (± 2 y and 10 mo). Complete correction of the deformities was achieved in 86% of patients. Of the 58 plate and screw constructs, 10% had screw breakage. Patients with genu valgum had 2 screw failures (6.25%), but in the genu varum group there were 4 screw failures (40%). Of the 3 patients who did not have complete correction of the deformities, 2 had mucopolysaccharidosis and 1 was nearing skeletal maturity (16 y old). The age of the patient, body weight, BMI, and degrees of angulation did not have any statistically significant correlation with the screw failure. Screw failures in female patients were more common than in male patients. All implant failures occurred in idiopathic patients. The efficacy of 3.5 mm reconstruction plates for temporary hemiepiphysiodesis around the knee is similar to that of 8-plates. However, the reconstruction plates have a lower cost and are easily available. Noncanulated 3.5 or 4.5 mm cortical screws seem to be superior to 4 mm noncanulated cancellous screws. Level 3.

Research paper thumbnail of Comparison of the cheese-wiring effects among three sutures used in rotator cuff repair

International journal of shoulder surgery, 2014

The goal of this study was to compare the cheese-wiring effects of three sutures with different c... more The goal of this study was to compare the cheese-wiring effects of three sutures with different coefficients of friction. Sixteen human cadaveric shoulders were dissected to expose the distal supraspinatus and infraspinatus muscle tendons. Three sutures were stitched through the tendons: #2 Orthocord(™) suture (reference #223114, DePuy Mitek, Inc., Raynham, MA), #2 ETHIBOND* EXCEL Suture, and #2 FiberWire(®) suture (FiberWire(®), Arthrex, Naples, FL). The sutures were pulled by cyclic axial forces from 10 to 70 N at 1 Hz for 1000 cycles through a MTS machine. The cut-through distance on the tendon was measured with a digital caliper. The cut-through distance in the supraspinatus tendons (mean ± standard deviation, n = 12) were 2.9 ± 0.6 mm for #2 Orthocord(™) suture, 3.2 ± 1.2 mm for #2 ETHIBOND* suture, and 4.2 ± 1.7 mm for #2 FiberWire(®) suture. The differences were statistically significant analyzing with analysis of variance (P = 0.047) and two-tailed Student's t-test, whic...