Ramana Rao V. Dhannapuneni - Academia.edu (original) (raw)
Papers by Ramana Rao V. Dhannapuneni
Cardiology in the young, Mar 20, 2024
World Journal for Pediatric and Congenital Heart Surgery, May 4, 2021
We present a surgical case of native pulmonary valve (PV) restoration in a 16-year-old boy with a... more We present a surgical case of native pulmonary valve (PV) restoration in a 16-year-old boy with a previous history of transannular patch repair of tetralogy of Fallot in infancy. The PV was restored by approximation of split anterior commissure in the presence of developed and pliable leaflets well preserved after initial surgery. Postoperative echocardiogram showed a competent valve with peak velocity of 2.8 m/s. At six-week follow-up, the patient remained well, and echocardiogram demonstrated a competent PV with decreased velocity of 2.1 m/s across it. We encourage a mindful preservation of PV leaflets whenever it is possible at time of initial repair to implement this relatively easy operation to restore PV function later in life.
The Journal of Thoracic and Cardiovascular Surgery, Nov 1, 2021
OBJECTIVE To evaluate the midterm results of pulmonary valve leaflet augmentation in transannular... more OBJECTIVE To evaluate the midterm results of pulmonary valve leaflet augmentation in transannular repair of tetralogy of Fallot (TOF). METHODS From 2007 to 2019, 131 patients underwent a transannular repair with pulmonary leaflet augmentation for TOF (n = 120) and double outlet right ventricle with pulmonary stenosis (n = 11). Patch material was expanded polytetrafluoroethylene (n = 76), glutaraldehyde-treated autologous pericardium (n = 47) and bovine pericardium (n = 8). RESULTS Median age at repair was 8.9 months (interquartile range, 5.4-14.8). There was no operative mortality. Median follow-up was 6.25 years (interquartile range, 2.77-7.75). Freedom from severe pulmonary regurgitation (PR) was 85% (95% confidence interval [CI], 77%-90%) and 76% (95% CI, 66%-83%) at 1 and 5 years, respectively. Freedom from moderate or greater PR was 69% (95% CI, 60%-76%) and 30% (95% CI, 21%-39%) at 5 and 10 years, respectively. Three patients required pulmonary valve replacement for PR. Nine patients required pulmonary balloon valvuloplasty. Freedom from intervention for pulmonary valve stenosis was 98% (95% CI, 93%-99%) and 94% (95% CI, 87%-97%) at 1 and 5 years, respectively. One patient with severe PR had an indexed right ventricular volume >160 mL/m2. Use of expanded polytetrafluoroethylene resulted in a greater freedom from moderate or greater PR (log-rank test P < .001; Cox regression hazard ratio, 0.40; 95% CI, 0.25-0.63; P < .001). CONCLUSIONS At midterm follow-up of transannular repair with pulmonary valve leaflet augmentation, severe PR occurs in less than 50% of patients. The expanded polytetrafluoroethylene patch performs better than pericardium.
Journal of Laryngology and Otology, Jan 23, 2020
BackgroundWhilst aortopexy is an accepted and established procedure, there remains considerable h... more BackgroundWhilst aortopexy is an accepted and established procedure, there remains considerable heterogeneity within the literature, with inconsistencies in both the approach taken and the technique employed. Furthermore, limited data exist on both patient selection and long-term outcomes. This study aimed to report the experience of managing severe tracheomalacia by way of aortopexy in a large UK paediatric centre.MethodA retrospective case note review was conducted. Mean follow up was five years.ResultsTwenty-five patients underwent aortopexy for severe tracheomalacia caused by external vascular compression. Acute life-threatening events precipitated investigation in 72 per cent of cases. Twenty-one patients initially presented to ENT services for investigation, which comprised upper airway endoscopy and imaging with computed tomography angiography. Post-operatively, the majority of patients demonstrated complete resolution of symptoms and were discharged from all associated services. Only four patients required a tracheostomy.ConclusionAortopexy offers an effective method of treating severe tracheomalacia due to vascular compression.
Pediatric Critical Care Medicine, Nov 1, 2022
Cardiology in The Young, Sep 15, 2021
Objectives:There are several studies reporting the outcomes of hypoplastic aortic arch and aortic... more Objectives:There are several studies reporting the outcomes of hypoplastic aortic arch and aortic coarctation repair with combination of techniques. However, only few studies reported of aortic arch and coarctation repair using a homograft patch through sternotomy and circulatory arrest with antegrade cerebral perfusion. We report our experience and outcomes of this cohort of neonates and infants.Methods:We performed retrospective data collection for all neonates and infants who underwent aortic arch reconstruction between 2015 and 2020 at our institute. Data are presented as median and inter-quartile range (IQR).Results:The cohort included 76 patients: 49 were males (64.5%). Median age at operation was 16 days (IQR 9–43.25 days). Median weight was 3.5 kg (IQR 3.10–4 kg). There was no 30 days mortality. Three patients died in hospital after 30 days (3.95%), neurological adverse events occurred in only one patient (1.32%) and recurrent laryngeal nerve injury was noted in four patients (5.26%). Only three patients required the support of extracorporeal membrane oxygenation (ECMO) with a median ECMO run of 4 days. Median follow-up was 35 months (IQR 18.9–46.4 months); 5 years survival was 93.42% (n = 71). The rate of re-intervention on the aortic arch was 9.21% (n = 7).Conclusion:Our experience shows excellent outcomes in repairing aortic arch hypoplasia with homograft patch under moderate to deep hypothermia with low in-hospital and 5 years mortality rates.
Cardiology in the Young
Objectives:There are several studies reporting the outcomes of hypoplastic aortic arch and aortic... more Objectives:There are several studies reporting the outcomes of hypoplastic aortic arch and aortic coarctation repair with combination of techniques. However, only few studies reported of aortic arch and coarctation repair using a homograft patch through sternotomy and circulatory arrest with antegrade cerebral perfusion. We report our experience and outcomes of this cohort of neonates and infants.Methods:We performed retrospective data collection for all neonates and infants who underwent aortic arch reconstruction between 2015 and 2020 at our institute. Data are presented as median and inter-quartile range (IQR).Results:The cohort included 76 patients: 49 were males (64.5%). Median age at operation was 16 days (IQR 9–43.25 days). Median weight was 3.5 kg (IQR 3.10–4 kg). There was no 30 days mortality. Three patients died in hospital after 30 days (3.95%), neurological adverse events occurred in only one patient (1.32%) and recurrent laryngeal nerve injury was noted in four patient...
We present the case of a 9-year-old girl who was referred to our service with a recent history of... more We present the case of a 9-year-old girl who was referred to our service with a recent history of shortness of breath on exertion and fatigue in addition to visual disturbances and gastrointestinal symptoms. A Transthoracic Echocardiography demonstrated the presence of 3 large intracardiac masses in both the right and left atrium protruding into the mitral and tricuspid valve orifices causing bilateral inflow obstruction. The patient underwent urgent surgical excision of the masses which was uncomplicated. Histological testing was consistent with a rare intracardiac location of Burkitt’s Lymphoma.
World Journal for Pediatric and Congenital Heart Surgery, 2021
We present a surgical case of native pulmonary valve (PV) restoration in a 16-year-old boy with a... more We present a surgical case of native pulmonary valve (PV) restoration in a 16-year-old boy with a previous history of transannular patch repair of tetralogy of Fallot in infancy. The PV was restored by approximation of split anterior commissure in the presence of developed and pliable leaflets well preserved after initial surgery. Postoperative echocardiogram showed a competent valve with peak velocity of 2.8 m/s. At six-week follow-up, the patient remained well, and echocardiogram demonstrated a competent PV with decreased velocity of 2.1 m/s across it. We encourage a mindful preservation of PV leaflets whenever it is possible at time of initial repair to implement this relatively easy operation to restore PV function later in life.
The Journal of Thoracic and Cardiovascular Surgery, 2021
OBJECTIVE To evaluate the midterm results of pulmonary valve leaflet augmentation in transannular... more OBJECTIVE To evaluate the midterm results of pulmonary valve leaflet augmentation in transannular repair of tetralogy of Fallot (TOF). METHODS From 2007 to 2019, 131 patients underwent a transannular repair with pulmonary leaflet augmentation for TOF (n = 120) and double outlet right ventricle with pulmonary stenosis (n = 11). Patch material was expanded polytetrafluoroethylene (n = 76), glutaraldehyde-treated autologous pericardium (n = 47) and bovine pericardium (n = 8). RESULTS Median age at repair was 8.9 months (interquartile range, 5.4-14.8). There was no operative mortality. Median follow-up was 6.25 years (interquartile range, 2.77-7.75). Freedom from severe pulmonary regurgitation (PR) was 85% (95% confidence interval [CI], 77%-90%) and 76% (95% CI, 66%-83%) at 1 and 5 years, respectively. Freedom from moderate or greater PR was 69% (95% CI, 60%-76%) and 30% (95% CI, 21%-39%) at 5 and 10 years, respectively. Three patients required pulmonary valve replacement for PR. Nine patients required pulmonary balloon valvuloplasty. Freedom from intervention for pulmonary valve stenosis was 98% (95% CI, 93%-99%) and 94% (95% CI, 87%-97%) at 1 and 5 years, respectively. One patient with severe PR had an indexed right ventricular volume >160 mL/m2. Use of expanded polytetrafluoroethylene resulted in a greater freedom from moderate or greater PR (log-rank test P < .001; Cox regression hazard ratio, 0.40; 95% CI, 0.25-0.63; P < .001). CONCLUSIONS At midterm follow-up of transannular repair with pulmonary valve leaflet augmentation, severe PR occurs in less than 50% of patients. The expanded polytetrafluoroethylene patch performs better than pericardium.
Journal of Wound Care, 2005
Objective: Well-defined criteria are needed to provide guidance for the appropriate management of... more Objective: Well-defined criteria are needed to provide guidance for the appropriate management of leg wounds following saphenous vein harvest in coronary artery bypass graft surgery (CABG). Method: A score named DISINFECT was devised to carefully define the variables to be considered for assessing saphenous vein harvest wounds. Results: This preliminary study included 100 consecutive patients undergoing first-time isolated CABG requiring the saphenous vein as a conduit. Wounds were assessed and the points combined to create a daily score (D) according to the presence of increased C-reactive protein/white blood cells (I), surrounding tissue (S), quality of the incision (I), new skin (N), foreign material (F), exudate (E), positive cultures (C) and temperature (T). Conclusion: Taking into account the stages of wound healing, severity of infection and appropriate use of antibiotics, this method of wound management would improve the consistency with which leg wounds are managed, reduce ...
British Journal of Surgery, Sep 1, 2021
Respiratory Diseases of the Newborn Infant, 2021
The ability to preoperatively identify patients who may require permanent pacemaker implantation ... more The ability to preoperatively identify patients who may require permanent pacemaker implantation is rather poorly understood. The aim of this study is to determine the current incidence of permanent pacing after valve surgery and to determine which factors place the heart valve patient at risk of requiring permanent pacemaker implantation. We audited the records of 2,392 consecutive adult patients who underwent cardiac valve surgical procedures by the same surgical team from 25 April 1998 through 31 March 2003. Of these, 118 patients (group A) required the postoperative implantation of permanent pacemakers during the same hospitalization; they were compared with 1,959 heart valve patients (group B) who did not require pacemaker placement. Multivariate logistic regression analysis showed that reoperations (odds ratio [OR], 8.23; P <0.001), longer cumulative cross-clamp times (OR, 5.9; P <0.001), multiple-valve surgical procedures (OR, 3.46; P <0.05), and absence of preoperat...
World Journal for Pediatric and Congenital Heart Surgery, 2016
We report the use of video-assisted cardioscopy (VAC) to assess the complete resection of a giant... more We report the use of video-assisted cardioscopy (VAC) to assess the complete resection of a giant sessile rhabdomyoma of the left ventricle (LV) in a case of suspected neonatal tuberous sclerosis. A fetal echocardiogram performed at 20 weeks of gestation identified the mass at the apex of the LV and attached to the interventricular septum (IVS). Further echocardiography during the pregnancy demonstrated moderate growth of the LV mass. This was occupying more than two-thirds of the LV cavity after the delivery, and there were concerns of LV outflow tract obstruction. The 4-kg newborn underwent LV tumor excision via a left atrial approach at the age of 12 days. The mitral valve (MV) apparatus and the IVS had strong attachments to the mass. The tumor was successfully resected. In view of the invasiveness of the tumor, a decision was taken to perform an intracardiac assessment using a VAC to detect any iatrogenic complication. A Karl Storz Neuro Endoscope probe 4 mm in diameter and 14 m...
Interactive cardiovascular and thoracic surgery, 2005
Repeat median sternotomy in paediatrics though associated with increased perioperative risks, yet... more Repeat median sternotomy in paediatrics though associated with increased perioperative risks, yet the incidence of injury to the underlying structures during sternal re-entry is poorly quantified. We reviewed 108 patients undergoing repeat sternotomies (group-I) and a control group of 516 patients undergoing first time sternotomy (group-II) over six years with six-months follow-up. Overall mean age was 17 months (range 1 day-16 years). Uncontrollable bleeding was encountered in 4 patients (3.7%), non-fatal cardiac laceration in 10 (9.2%), minor injuries to aorta in 7 (6.4%) and right atrium in 8 (7.4%) in Group-I. Forty-one times (38%) pericardial sac was closed and 55 times (51%) artificial materials (Dacron/Gortex) were used in initial procedures. The incidence of injuries during sternal re-entry was significantly lower in those patients where pericardial sac was closed initially (P<0.001). Hospital mortality was 3.7% in Group-I and 2.7% in Group-II, however, overall survival w...
The Journal of Thoracic and Cardiovascular Surgery, 2011
Objective: We sought to evaluate pulmonary artery banding in infants with complete atrioventricul... more Objective: We sought to evaluate pulmonary artery banding in infants with complete atrioventricular septal defects. Methods: From 2000 to 2009, 20 infants with complete atrioventricular septal defects underwent pulmonary artery banding because of unsuitable anatomy (unbalanced ventricles, associated lesions, or both) or clinical condition (infection, chronic lung disease, or noncardiac malformation). Patients were divided into 2 groups: the conventional PAB group (n ¼ 13 [65%]; mean age, 74 AE 56 days [range, 6-187 days]; mean weight, 3.3 AE 1.1 kg [range, 2.1-5.8 kg]) and the FloWatch-PAB group (n ¼ 7 [35%]; mean age, 111 AE 40 days [range, 81-187 days]; mean weight, 4.3 AE 1.2 kg [range, 3.2-6.1 kg]). There was no statistical difference in age or weight. Preoperative mechanical ventilation was required in 3 (23%) of 13 infants in the conventional PAB group and 5 (71%) of 7 infants in the FloWatch-PAB group (P < .05). Results: Ten (77%) of 13 infants in the conventional PAB group died versus 0 (0%) of 7 infants in the FloWatch-PAB group (P < .001). Sternal closure was delayed in 6 (46%) of 13 infants in the conventional PAB group and 0 (0%) of 7 infants in the FloWatch-PAB group (P < .05). The mean duration of mechanical ventilation, intensive care unit stay, and hospital stay was significantly longer (P<.05) in the conventional PAB group than in the FloWatch-PAB group (21 AE 17 days [range, 4-61 days] vs 3 AE 2 days [range, 1-8 days], 22 AE 18 days [range, 5-61 days] vs 7 AE 6 days [range, 2-21 days], and 54 AE 12 days [range, 40-71 days] vs 29 AE 25 days [range, 9-81 days], respectively). Left atrioventricular valve regurgitation increased (mild to moderate) in 2 infants in the conventional PAB group and decreased (severe to moderate) in 2 infants in the FloWatch-PAB group. Six of 10 survivors (1 in the conventional PAB group and 5 in the FloWatch-PAB group) underwent pulmonary artery debanding and repair after a median interval of 125 days (range, 34-871 days); 4 of 10 are awaiting repair. Conclusions: In selected patients with complete atrioventricular septal defects, pulmonary artery banding followed by late repair is a viable alternative strategy. In our study the FloWatch-PAB device resulted in improved survival and made later repair possible in a better clinical state.
Cardiology in the young, Mar 20, 2024
World Journal for Pediatric and Congenital Heart Surgery, May 4, 2021
We present a surgical case of native pulmonary valve (PV) restoration in a 16-year-old boy with a... more We present a surgical case of native pulmonary valve (PV) restoration in a 16-year-old boy with a previous history of transannular patch repair of tetralogy of Fallot in infancy. The PV was restored by approximation of split anterior commissure in the presence of developed and pliable leaflets well preserved after initial surgery. Postoperative echocardiogram showed a competent valve with peak velocity of 2.8 m/s. At six-week follow-up, the patient remained well, and echocardiogram demonstrated a competent PV with decreased velocity of 2.1 m/s across it. We encourage a mindful preservation of PV leaflets whenever it is possible at time of initial repair to implement this relatively easy operation to restore PV function later in life.
The Journal of Thoracic and Cardiovascular Surgery, Nov 1, 2021
OBJECTIVE To evaluate the midterm results of pulmonary valve leaflet augmentation in transannular... more OBJECTIVE To evaluate the midterm results of pulmonary valve leaflet augmentation in transannular repair of tetralogy of Fallot (TOF). METHODS From 2007 to 2019, 131 patients underwent a transannular repair with pulmonary leaflet augmentation for TOF (n = 120) and double outlet right ventricle with pulmonary stenosis (n = 11). Patch material was expanded polytetrafluoroethylene (n = 76), glutaraldehyde-treated autologous pericardium (n = 47) and bovine pericardium (n = 8). RESULTS Median age at repair was 8.9 months (interquartile range, 5.4-14.8). There was no operative mortality. Median follow-up was 6.25 years (interquartile range, 2.77-7.75). Freedom from severe pulmonary regurgitation (PR) was 85% (95% confidence interval [CI], 77%-90%) and 76% (95% CI, 66%-83%) at 1 and 5 years, respectively. Freedom from moderate or greater PR was 69% (95% CI, 60%-76%) and 30% (95% CI, 21%-39%) at 5 and 10 years, respectively. Three patients required pulmonary valve replacement for PR. Nine patients required pulmonary balloon valvuloplasty. Freedom from intervention for pulmonary valve stenosis was 98% (95% CI, 93%-99%) and 94% (95% CI, 87%-97%) at 1 and 5 years, respectively. One patient with severe PR had an indexed right ventricular volume >160 mL/m2. Use of expanded polytetrafluoroethylene resulted in a greater freedom from moderate or greater PR (log-rank test P < .001; Cox regression hazard ratio, 0.40; 95% CI, 0.25-0.63; P < .001). CONCLUSIONS At midterm follow-up of transannular repair with pulmonary valve leaflet augmentation, severe PR occurs in less than 50% of patients. The expanded polytetrafluoroethylene patch performs better than pericardium.
Journal of Laryngology and Otology, Jan 23, 2020
BackgroundWhilst aortopexy is an accepted and established procedure, there remains considerable h... more BackgroundWhilst aortopexy is an accepted and established procedure, there remains considerable heterogeneity within the literature, with inconsistencies in both the approach taken and the technique employed. Furthermore, limited data exist on both patient selection and long-term outcomes. This study aimed to report the experience of managing severe tracheomalacia by way of aortopexy in a large UK paediatric centre.MethodA retrospective case note review was conducted. Mean follow up was five years.ResultsTwenty-five patients underwent aortopexy for severe tracheomalacia caused by external vascular compression. Acute life-threatening events precipitated investigation in 72 per cent of cases. Twenty-one patients initially presented to ENT services for investigation, which comprised upper airway endoscopy and imaging with computed tomography angiography. Post-operatively, the majority of patients demonstrated complete resolution of symptoms and were discharged from all associated services. Only four patients required a tracheostomy.ConclusionAortopexy offers an effective method of treating severe tracheomalacia due to vascular compression.
Pediatric Critical Care Medicine, Nov 1, 2022
Cardiology in The Young, Sep 15, 2021
Objectives:There are several studies reporting the outcomes of hypoplastic aortic arch and aortic... more Objectives:There are several studies reporting the outcomes of hypoplastic aortic arch and aortic coarctation repair with combination of techniques. However, only few studies reported of aortic arch and coarctation repair using a homograft patch through sternotomy and circulatory arrest with antegrade cerebral perfusion. We report our experience and outcomes of this cohort of neonates and infants.Methods:We performed retrospective data collection for all neonates and infants who underwent aortic arch reconstruction between 2015 and 2020 at our institute. Data are presented as median and inter-quartile range (IQR).Results:The cohort included 76 patients: 49 were males (64.5%). Median age at operation was 16 days (IQR 9–43.25 days). Median weight was 3.5 kg (IQR 3.10–4 kg). There was no 30 days mortality. Three patients died in hospital after 30 days (3.95%), neurological adverse events occurred in only one patient (1.32%) and recurrent laryngeal nerve injury was noted in four patients (5.26%). Only three patients required the support of extracorporeal membrane oxygenation (ECMO) with a median ECMO run of 4 days. Median follow-up was 35 months (IQR 18.9–46.4 months); 5 years survival was 93.42% (n = 71). The rate of re-intervention on the aortic arch was 9.21% (n = 7).Conclusion:Our experience shows excellent outcomes in repairing aortic arch hypoplasia with homograft patch under moderate to deep hypothermia with low in-hospital and 5 years mortality rates.
Cardiology in the Young
Objectives:There are several studies reporting the outcomes of hypoplastic aortic arch and aortic... more Objectives:There are several studies reporting the outcomes of hypoplastic aortic arch and aortic coarctation repair with combination of techniques. However, only few studies reported of aortic arch and coarctation repair using a homograft patch through sternotomy and circulatory arrest with antegrade cerebral perfusion. We report our experience and outcomes of this cohort of neonates and infants.Methods:We performed retrospective data collection for all neonates and infants who underwent aortic arch reconstruction between 2015 and 2020 at our institute. Data are presented as median and inter-quartile range (IQR).Results:The cohort included 76 patients: 49 were males (64.5%). Median age at operation was 16 days (IQR 9–43.25 days). Median weight was 3.5 kg (IQR 3.10–4 kg). There was no 30 days mortality. Three patients died in hospital after 30 days (3.95%), neurological adverse events occurred in only one patient (1.32%) and recurrent laryngeal nerve injury was noted in four patient...
We present the case of a 9-year-old girl who was referred to our service with a recent history of... more We present the case of a 9-year-old girl who was referred to our service with a recent history of shortness of breath on exertion and fatigue in addition to visual disturbances and gastrointestinal symptoms. A Transthoracic Echocardiography demonstrated the presence of 3 large intracardiac masses in both the right and left atrium protruding into the mitral and tricuspid valve orifices causing bilateral inflow obstruction. The patient underwent urgent surgical excision of the masses which was uncomplicated. Histological testing was consistent with a rare intracardiac location of Burkitt’s Lymphoma.
World Journal for Pediatric and Congenital Heart Surgery, 2021
We present a surgical case of native pulmonary valve (PV) restoration in a 16-year-old boy with a... more We present a surgical case of native pulmonary valve (PV) restoration in a 16-year-old boy with a previous history of transannular patch repair of tetralogy of Fallot in infancy. The PV was restored by approximation of split anterior commissure in the presence of developed and pliable leaflets well preserved after initial surgery. Postoperative echocardiogram showed a competent valve with peak velocity of 2.8 m/s. At six-week follow-up, the patient remained well, and echocardiogram demonstrated a competent PV with decreased velocity of 2.1 m/s across it. We encourage a mindful preservation of PV leaflets whenever it is possible at time of initial repair to implement this relatively easy operation to restore PV function later in life.
The Journal of Thoracic and Cardiovascular Surgery, 2021
OBJECTIVE To evaluate the midterm results of pulmonary valve leaflet augmentation in transannular... more OBJECTIVE To evaluate the midterm results of pulmonary valve leaflet augmentation in transannular repair of tetralogy of Fallot (TOF). METHODS From 2007 to 2019, 131 patients underwent a transannular repair with pulmonary leaflet augmentation for TOF (n = 120) and double outlet right ventricle with pulmonary stenosis (n = 11). Patch material was expanded polytetrafluoroethylene (n = 76), glutaraldehyde-treated autologous pericardium (n = 47) and bovine pericardium (n = 8). RESULTS Median age at repair was 8.9 months (interquartile range, 5.4-14.8). There was no operative mortality. Median follow-up was 6.25 years (interquartile range, 2.77-7.75). Freedom from severe pulmonary regurgitation (PR) was 85% (95% confidence interval [CI], 77%-90%) and 76% (95% CI, 66%-83%) at 1 and 5 years, respectively. Freedom from moderate or greater PR was 69% (95% CI, 60%-76%) and 30% (95% CI, 21%-39%) at 5 and 10 years, respectively. Three patients required pulmonary valve replacement for PR. Nine patients required pulmonary balloon valvuloplasty. Freedom from intervention for pulmonary valve stenosis was 98% (95% CI, 93%-99%) and 94% (95% CI, 87%-97%) at 1 and 5 years, respectively. One patient with severe PR had an indexed right ventricular volume >160 mL/m2. Use of expanded polytetrafluoroethylene resulted in a greater freedom from moderate or greater PR (log-rank test P < .001; Cox regression hazard ratio, 0.40; 95% CI, 0.25-0.63; P < .001). CONCLUSIONS At midterm follow-up of transannular repair with pulmonary valve leaflet augmentation, severe PR occurs in less than 50% of patients. The expanded polytetrafluoroethylene patch performs better than pericardium.
Journal of Wound Care, 2005
Objective: Well-defined criteria are needed to provide guidance for the appropriate management of... more Objective: Well-defined criteria are needed to provide guidance for the appropriate management of leg wounds following saphenous vein harvest in coronary artery bypass graft surgery (CABG). Method: A score named DISINFECT was devised to carefully define the variables to be considered for assessing saphenous vein harvest wounds. Results: This preliminary study included 100 consecutive patients undergoing first-time isolated CABG requiring the saphenous vein as a conduit. Wounds were assessed and the points combined to create a daily score (D) according to the presence of increased C-reactive protein/white blood cells (I), surrounding tissue (S), quality of the incision (I), new skin (N), foreign material (F), exudate (E), positive cultures (C) and temperature (T). Conclusion: Taking into account the stages of wound healing, severity of infection and appropriate use of antibiotics, this method of wound management would improve the consistency with which leg wounds are managed, reduce ...
British Journal of Surgery, Sep 1, 2021
Respiratory Diseases of the Newborn Infant, 2021
The ability to preoperatively identify patients who may require permanent pacemaker implantation ... more The ability to preoperatively identify patients who may require permanent pacemaker implantation is rather poorly understood. The aim of this study is to determine the current incidence of permanent pacing after valve surgery and to determine which factors place the heart valve patient at risk of requiring permanent pacemaker implantation. We audited the records of 2,392 consecutive adult patients who underwent cardiac valve surgical procedures by the same surgical team from 25 April 1998 through 31 March 2003. Of these, 118 patients (group A) required the postoperative implantation of permanent pacemakers during the same hospitalization; they were compared with 1,959 heart valve patients (group B) who did not require pacemaker placement. Multivariate logistic regression analysis showed that reoperations (odds ratio [OR], 8.23; P <0.001), longer cumulative cross-clamp times (OR, 5.9; P <0.001), multiple-valve surgical procedures (OR, 3.46; P <0.05), and absence of preoperat...
World Journal for Pediatric and Congenital Heart Surgery, 2016
We report the use of video-assisted cardioscopy (VAC) to assess the complete resection of a giant... more We report the use of video-assisted cardioscopy (VAC) to assess the complete resection of a giant sessile rhabdomyoma of the left ventricle (LV) in a case of suspected neonatal tuberous sclerosis. A fetal echocardiogram performed at 20 weeks of gestation identified the mass at the apex of the LV and attached to the interventricular septum (IVS). Further echocardiography during the pregnancy demonstrated moderate growth of the LV mass. This was occupying more than two-thirds of the LV cavity after the delivery, and there were concerns of LV outflow tract obstruction. The 4-kg newborn underwent LV tumor excision via a left atrial approach at the age of 12 days. The mitral valve (MV) apparatus and the IVS had strong attachments to the mass. The tumor was successfully resected. In view of the invasiveness of the tumor, a decision was taken to perform an intracardiac assessment using a VAC to detect any iatrogenic complication. A Karl Storz Neuro Endoscope probe 4 mm in diameter and 14 m...
Interactive cardiovascular and thoracic surgery, 2005
Repeat median sternotomy in paediatrics though associated with increased perioperative risks, yet... more Repeat median sternotomy in paediatrics though associated with increased perioperative risks, yet the incidence of injury to the underlying structures during sternal re-entry is poorly quantified. We reviewed 108 patients undergoing repeat sternotomies (group-I) and a control group of 516 patients undergoing first time sternotomy (group-II) over six years with six-months follow-up. Overall mean age was 17 months (range 1 day-16 years). Uncontrollable bleeding was encountered in 4 patients (3.7%), non-fatal cardiac laceration in 10 (9.2%), minor injuries to aorta in 7 (6.4%) and right atrium in 8 (7.4%) in Group-I. Forty-one times (38%) pericardial sac was closed and 55 times (51%) artificial materials (Dacron/Gortex) were used in initial procedures. The incidence of injuries during sternal re-entry was significantly lower in those patients where pericardial sac was closed initially (P<0.001). Hospital mortality was 3.7% in Group-I and 2.7% in Group-II, however, overall survival w...
The Journal of Thoracic and Cardiovascular Surgery, 2011
Objective: We sought to evaluate pulmonary artery banding in infants with complete atrioventricul... more Objective: We sought to evaluate pulmonary artery banding in infants with complete atrioventricular septal defects. Methods: From 2000 to 2009, 20 infants with complete atrioventricular septal defects underwent pulmonary artery banding because of unsuitable anatomy (unbalanced ventricles, associated lesions, or both) or clinical condition (infection, chronic lung disease, or noncardiac malformation). Patients were divided into 2 groups: the conventional PAB group (n ¼ 13 [65%]; mean age, 74 AE 56 days [range, 6-187 days]; mean weight, 3.3 AE 1.1 kg [range, 2.1-5.8 kg]) and the FloWatch-PAB group (n ¼ 7 [35%]; mean age, 111 AE 40 days [range, 81-187 days]; mean weight, 4.3 AE 1.2 kg [range, 3.2-6.1 kg]). There was no statistical difference in age or weight. Preoperative mechanical ventilation was required in 3 (23%) of 13 infants in the conventional PAB group and 5 (71%) of 7 infants in the FloWatch-PAB group (P < .05). Results: Ten (77%) of 13 infants in the conventional PAB group died versus 0 (0%) of 7 infants in the FloWatch-PAB group (P < .001). Sternal closure was delayed in 6 (46%) of 13 infants in the conventional PAB group and 0 (0%) of 7 infants in the FloWatch-PAB group (P < .05). The mean duration of mechanical ventilation, intensive care unit stay, and hospital stay was significantly longer (P<.05) in the conventional PAB group than in the FloWatch-PAB group (21 AE 17 days [range, 4-61 days] vs 3 AE 2 days [range, 1-8 days], 22 AE 18 days [range, 5-61 days] vs 7 AE 6 days [range, 2-21 days], and 54 AE 12 days [range, 40-71 days] vs 29 AE 25 days [range, 9-81 days], respectively). Left atrioventricular valve regurgitation increased (mild to moderate) in 2 infants in the conventional PAB group and decreased (severe to moderate) in 2 infants in the FloWatch-PAB group. Six of 10 survivors (1 in the conventional PAB group and 5 in the FloWatch-PAB group) underwent pulmonary artery debanding and repair after a median interval of 125 days (range, 34-871 days); 4 of 10 are awaiting repair. Conclusions: In selected patients with complete atrioventricular septal defects, pulmonary artery banding followed by late repair is a viable alternative strategy. In our study the FloWatch-PAB device resulted in improved survival and made later repair possible in a better clinical state.