Door-to-balloon time and the determining factors in a tertiary cardiac center in Nepal.

BACKGROUND: Door-to-balloon (DTB) time of 90 min during primary angioplasty is considered as the benchmark duration. Shorter DTB time is preferable, and longer duration can have poor clinical outcomes. METHODS: A cross-sectional observational study of three months in Shahid Gangalal National Heart Center was conducted in which all patients undergoing primary angioplasty were included. The DTB time was calculated, and the different determining factors were studied. RESULTS: Seventy-nine patients undergoing primary percutaneous intervention were studied. The median DTB time was 79 minutes (Interquartile range [IQR] 59-115 min). Forty-six (58.2%) patients had a DTB time of less than 90 min. DTB time varied significantly with direct visit vs transfer (p = 0.029) and office time visit (9 am-5 pm) vs off time (5 pm-9 am) (p = 0.012). DTB time did not differ between any infarct-related vessels (p = 0.471), number of vessels involved (p = 0.638), and the added procedures (defibrillation, thrombosuction, and temporary pacemaker insertion) (p = 0.682) during angioplasty. No significant differences were recorded according to age (p = 0.330), gender (p = 0.254), hypertension (p = 0.073), diabetes (p = 0.487), heart failure (p = 0.316), and baseline left ventricular ejection fraction (LVEF) (p = 0.819). CONCLUSION: The median DTB time in primary angioplasty was less than 90 minutes. The significant determining factors were timing of hospital visit (office vs off time) and type of visit (direct vs transfer). There can be improvement in factors determining DTB time to lower it further.

Percutaneous transvenous mitral commissurotomy in mitral stenosis and left atrial appendage clot patients in special conditions: Hospital-based study.

BACKGROUND: The percutaneous transvenous mitral commissurotomy is an important procedure for the treatment of mitral stenosis. A lot of mitral stenosis cases have left atrial appendage clot which precludes the patient from the benefit of this procedure. The aim of the study was to study the feasibility and safety of the procedure in a patient with appendage clot in the setup of certain urgent conditions. METHOD: All cases of mitral stenosis with significant dyspnea and mitral valve area <1.5cm2 with left atrial appendage clot and a condition which would preclude the patient from continuing on anticoagulation and needed urgent intervention were included in the study. From January 2011 to December 2013, twenty patients coming to Shahid Gangalal National Heart Centre, Kathmandu were selected for the procedure with conventional sampling technique. Informed written consent was obtained from the patients explaining all possible complications. The approval of the study was taken from the ethical committee of the hospital. RESULT: Mean mitral valve area increased from 0.90cm2 (SD±0.14) to 1.5cm2 (SD±0.21) (p=0.02). Left atrial mean pressure decreased from mean of 20 to 10mmHg. Subjective improvement was reported in all. All of the patients had fulfilled criteria for successful PTMC. There was no mortality during hospital stay or in one-week follow-up period. There were no neurological complications or any need for emergency surgery. CONCLUSION: The immediate result of percutaneous transvenous mitral commissurotomy in selected cases of mitral stenosis with left atrial appendage clot is safe and acceptable in certain urgent situations in experienced hands.

Percutaneous transvenous mitral commissurotomy in juvenile mitral stenosis.

BACKGROUND: Percutaneous transvenous mitral commissurotomy (PTMC) is a valid alternative to surgical therapy in selected patients with mitral stenosis. Juvenile mitral stenosis (JMS) varies uniquely from adult rheumatic heart disease (RHD). We aimed to evaluate the efficacy of PTMC in JMS patients. METHODS: It was a single centre, retrospective study conducted between July 2013 to June 2015 in Shahid Gangalal National Heart Centre, Kathmandu, Nepal. Medical records of all consecutive patients aged less than 21 years who underwent PTMC were included. Mitral valve area (MVA), left atrial pressure and mitral regurgitation (MR) were compared pre and post procedure. RESULTS: During the study period 131 JMS patients underwent PTMC. Seventy (53.4%) were female and 61 (46.6%) were male. Among the 131 patients, 40 (30.5%) patients were below the age of 15 years. Patient age ranged between 9 to 20 years with the mean of 16.3±2.9 years. Electrocardiography (ECG) findings were normal sinus rhythm in 115 (87.7%) patients and atrial fibrillation in 16 (12.3%) patients. Left atrial size ranged from 2.9 to 6.1 cm with the mean of 4.5±0.6 cm. The mean MVA increased from 0.8±0.1 cm(2) to 1.6±0.2 following PTMC. Mean left atrial pressure decreased from their pre-PTMC state of 27.5±8.6 to 14.1±5.8 mmHg. Successful results were observed in 115 (87.7%) patients. Suboptimal MVA <1.5 cm(2) in 11 (8.4%) patients and post-procedure MR of more than moderate MR in 5 (3.8%) patients was the reason for unsuccessful PTMC. CONCLUSIONS: PTMC in JMS is safe and effective.

Carotid intima-media thickness (CIMT) and carotid plaques in young Nepalese patients with angiographically documented coronary artery disease.

BACKGROUND: Carotid intima-media thickness (CIMT) and carotid plaques are non-invasive surrogate markers of early evaluation of coronary artery disease (CAD) and sub clinical atherosclerosis. The objective of the study was to evaluate CIMT and carotid plaques in less than 45 years old Nepalese patients with angiographically proven CAD. METHODS: A total of 54 patients with angiographically documented CAD at less than 45 years of age were enrolled. CAD was confirmed by coronary angiography. Demographic profile was obtained. High resolution B-mode ultrasound was used to detect the CIMT and carotid plaques. RESULTS: The study population included 44 males and 10 females, with a mean ± SD age of 38.4±4.3 years (range, 25-44 years). Cardiovascular risks factors included smoking in 81%, Hypertension in 52%, diabetes in 19% and alcohol consumption in 78% of patients. Lipid profile (mean ± SD) was normal except for elevated triglyceride (TG) levels of 204±130.8 mg/dL. By angiography, 64.8% had single vessel disease, 26% had double vessel disease and 9.2% had triple vessel disease. Ultrasound detected either thickened CIMT or presence of plaques in 46 (85.2%) cases (group-A) and 8 (14.8%) had negative (normal) carotid study (group-B). Among the 46 patients with positive findings 63% had carotid plaques and 37% had thickened CIMT only. The majority (69%) of the carotid plaques were detected at the carotid bulbs. In total population, carotid plaque was detected in 53.7% of cases. There was no statistical significant difference of age, body mass index (BMI) and lipid level between group-A and group-B. CONCLUSIONS: Increased CIMT and carotid plaques are detected in majority of the young Nepalese patients with angiographically documented CAD. The majority of carotid plaques are detected at the carotid bulbs. Routine carotid ultrasound study in young individuals with CAD risk factors appears worthwhile.

Percutaneous transvenous mitral commissurotomy in elderly mitral stenosis patients. A retrospective study at shahid gangalal national heart centre, bansbari, kathmandu, Nepal.

INTRODUCTION: Percutaneous transvenous Mitral Commissurotomy (PTMC) has been shown to be a valid alternative to surgical therapy in selected patients with mitral stenosis. Though its efficacy in children and young adults is already established, its role in elderly patients is not well reported. We aimed to evaluate the efficacy of PTMC in elderly patients (≥60 years). METHODS: All elderly patients who underwent PTMC from March 2008 to March 2013 were retrospectively reviewed. Mitral valve area and mean left atrial pressure before and after the procedure were compared. RESULTS: During the study period 49 elderly patients underwent PTMC. Thirty eight were female and 11 male. Age ranged from 60 to 77 years with the mean age of 64.5±4.0 years. The mean mitral valve area increased from 0.9±0.1 cm(2) to 1.6±0.3 cm(2) whereas mean left atrial pressure decreased from 25.4±6.6 mmHg to 12.9±4.5. Successful results were observed in 41 (83.6%) patients. Unsuccessful results were due to suboptimal mitral valve area <1.5 cm(2) in 7 (14.25%) patients and post-procedure MR of more than moderate MR in 1(2%) patients. Unsuccessful PTMC was much more common in severe than in moderate mitral stenosis. CONCLUSIONS: Our study suggests that PTMC in elderly is a safe and effective procedure when performed in experienced centre by experienced operators.

Study of Prevalence, Awareness,and control of Hypertension in a Suburban Area of Kathmandu, Nepal.

BACKGROUND, In the context of rapidly raising occurrence of cardiovascular diseases in the developing countries, it becomes imperative to study the scenario in its various aspects. The present study in Nepal deals with the hypertension as it is one of the major risk factors of cardiovascular diseases. METHODS AND RESULTS, A house-to-house survey was conducted in a suburban area of Kathmandu valley from February to June 2005 in adult population (age >/=18 years) to estimate the prevalence, awareness, treatment, and control rates of hypertension. Blood pressure was measured twice using standardized mercury sphygmomanometer, and an average of the two readings was taken. Total number of subjects were 1114 (men:541; women: 573; mean age: 37.8 -/+ 16.3 years). Overall prevalence of hypertension was 19.7% (22.2% in men and 17.3% in women, p < 0.05).Prevalence of hypertension in age group of >/=40 years was 36%.Awareness, treatment, and control rates were 41.1%, 26%, and 6%, respectively. CONCLUSION, Our study indicates that prevalence of hypertension is significant in Nepal and is comparable with other developing countries of this region. Awareness, treatment, and control rates are poor.

Percutaneous transvenous mitral commissurotomy.

Two hundred patients underwent Percutaneous transvenous mitral commissurotomy (PTMC) from January 2003 to July 2004. Seventy four percent of the patients were female. Age ranged from 10 years old to 61 years and mean age was 29 years. Twenty three percent of the patients were under 21 years of age. Atrial fibrillation was present in 32.0% of the cases. Mean mitral valve area increased from 0.90cm2 (+/- 0.14) to 1.82cm2 (+/- 0.21) (p = 0.018). Left atrial mean pressure decreased from 21 mmHg mean to 7 mmHg. Subjective improvement was reported in 98.0% of the patients immediately after the procedure. There was no mortality during the hospital stay or within the first month of the procedure. Significant mitral regurgitation of grade 3 was noted in 5 patients. Two developed severe mitral regurgitation. The complications were negligible. One had systemic embolisation during the procedure which recovered over a period of time. One developed deep vein thrombosis which recovered after treatment.

Assessment of carotid artery dimensions by ultrasound in non-smoker healthy adults of both sexes.

UNLABELLED: Assessment of carotid artery lumen diameter and intima-media thickness is becoming as a surrogate marker of early evaluation of cardiovascular disease. Present study aims to describe the normal carotid dimensions in healthy adults of both sexes. A total of 123 healthy volunteers including 65 men and 58 women, aged 21 to 60 years (mean +/- SD; 35.66 +/- 8.84 years) were studied. Ultrasound study of both carotid arteries were performed with a 7.5 MHz linear array transducer. Common carotid artery lumen diameter ranged from 4.3 mm to 7.7 mm. Difference was not noted between left and right common carotid artery lumen diameter (5.78 +/- 0.57 mm and 5.86 +/- 0.66 mm), and internal and external carotid artery lumen diameter as well. Both left and right common carotid artery, internal and external carotid artery lumen diameter tended to be larger (p < 0.05) in men than women. Common carotid artery intima-media thickness ranged from 0.4 mm to 0.8 mm. Difference was not noted between left and right common carotid intima-media thickness when separately analyzed among men, women and the entire population. Difference was also not noted in comparison between men and women. CONCLUSION: Common carotid artery and internal and external carotid artery lumen diameter tends to be larger in men than women among young adults. There is no difference between left and right carotid artery lumen diameter. Common carotid artery intima-media thickness is similar in comparison between left and right and both sexes.