Comparison of Radial and Femoral Percutaneous Coronary Intervention.

BACKGROUND: The use of radial access for percutaneous coronary intervention is increasing in Nepal. However, there is limited study on the comparison of radial and femoral access in Nepal. This is the study comparing net adverse clinical events of radial with femoral access for intervention. METHODS: This prospective study was conducted at Shahid Gangalal National Heart Center from January 2014 to June 2015 among 849 participations who underwent percutaneous coronary interventions, and 418 radial interventions were compared with 418 femoral interventions. A comparison was done in terms of 30- day rate of net adverse clinical events defined as the composite of death, myocardial infarction, stroke, target lesion revascularization and major bleeding. RESULTS: Incidence of net adverse clinical events was significantly lower in radial compared to femoral approach 18(4.30%) vs. 51 (12.2%), p= <0.001). Mortality observed in the radial approach was significantly lower (p=<0.001) compared to femoral. Procedure success was not significantly different p=0.629.  The trans-radial approach had significantly higher crossover rate (p=0.001). Observed vascular access site complications (p=0.026) and hospital stay (p=<0.0001) were lower in the radial group. Radiation exposure measured by fluoroscopy exposure time was not significantly different between the two groups (p=0.290). CONCLUSIONS: Radial access is associated with a lower rate of net adverse clinical events at 30 days compared to femoral access. Radial access is safer and equally effective compared to femoral access in the context of Nepal.

Feasibility and Safety of Distal Radial Artery Access in Anatomical Snuffbox for Coronary Angiography and Coronary Intervention.

BACKGROUND: There is limited data on feasibility and safety of coronary interventions performed using radial artery at anatomical snuffbox as vascular access point in South Asian region. Our study attempts to evaluate the feasibility and safety of coronary angiography and percutaneous coronary intervention using transradial access at anatomical snuffbox. METHODS: Transradial access at anatomical snuffbox was attempted in 128 consecutive patients, who were planned for coronary angiography and/or percutaneous coronary intervention. Success in vascular access, completion of planned procedure and complications encountered, including patency of radial artery after the procedure, were investigated. RESULTS: A total of 128 patients (76 males [59.4%]; 52 females [40.6%]) between 44-78 years of age (mean age, 59.0 +/- 10.2 years) were included in the study. Distal radial artery puncture and sheath placement was successful in all patients however planned procedure was completed in 126 (98.4%) patients. Total 90 coronary angiographies and 36 percutaneous coronary interventions were performed of which five were primary percutaneous coronary intervention. We encountered brachial artery spasm among two patient (1.5%) and significant pain and swelling among three patients (2.3%). No bleeding complication, numbness or parasthesia were observed on follow-up. Patients had average pain rating of 2.4+/- 1.1 in visual analogue pain rating scale. There were no instances of radial artery occlusion after the procedure. CONCLUSIONS: Distal radial artery, at anatomical snuffbox, is a safe and feasible alternative vascular access site for coronary angiography and percutaneous coronary intervention.

Contrast-induced Nephropathy Following Percutaneous Coronary Intervention at a Tertiary Cardiac Center in Nepal.

Background Contrast-induced nephropathy (CIN) is one of the leading causes of morbidity and mortality including increased financial burden in high risk patients undergoing percutaneous coronary intervention (PCI). Methods This is an observational prospective study. We aimed to study the incidence of CIN in Nepalese populations and compare the outcome to international reprinted values with coronary artery disease (CAD) undergoing PCI. All consecutive patients with CAD undergoing PCI between February 2010 and July 2010 were enrolled in the study. Results One hundred fifty-two patients were enrolled in the study during six months period. Twenty (13.20%) patients developed CIN following PCI. Out of them 70% were diabetics and 30% were non-diabetics. Mean age of patients was 58.5 ± 23 years; male:female ratio was 2.7:1. Mean contrast volume injected was 160.3  ±  78.3  mL. Diabetic patients 21.8% (14/64) had significant CIN compared to non-diabetic patients 6.8% (6/88) following PCI (<0.01). Conclusions CIN is a common complication following PCI especially in diabetics. Despite the use of iodinated material we had similar incidence of CIN comparing the incidence of CIN among various radiocontrast compounds used to visualize vessels. None of the patients received hemodialysis as compared to available studies and there was no observed mortality.

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.

Acute myocardial infarction following electroconvulsive therapy in a Schizophrenic patient.

Deaths due to acute coronary insufficiency have been reported during or following electroconvulsive therapy (ECT). Various mechanisms related to ECT related deaths also include cerebral, and respiratory complications; however, cardiovascular complication remains the most common. Here, we describe a 55 year old male with a longstanding psychiatric illness with multiple antipsychotics under regular follow-up and required repeated ECT therapy to have the disease symptoms under remission. This time he developed acute onset chest pain immediately post ECT shock and diagnosed as Acute anterior wall myocardial infarction and was taken up for successful primary coronary revascularization to left anterior descending (LAD) artery 2 h after the chest pain onset. He was later discharged in a stable state and advised for continuous psychiatric follow-up.

Anomalous origin of left main coronary artery from the right sinus of Valsalva presenting as non ST elevation acute coronary syndrome: A case report.

Congenital anomalies of the coronary arteries are a cause of sudden cardiac death. Of the known anatomic variants, anomalous origination of a coronary artery from an opposite sinus of Valsalva (ACAOS) remains a major clinical issue and a challenging condition to treat. Congenital coronary anomalies are likely to be under-recognized, as completing an anatomic assessment in a very large portion of the population would seem unfeasible. However, we present a case report with image of a 49 year old male presented with acute non-ST elevation ACS for which he underwent diagnostic angiography of the coronary system which revealed a common origin of both right and left main coronary artery from right sinus of Valsalva with significant obstructive lesion in the mid segment of right coronary artery. However, due to financial constraints CT angiography could not be done in this patient to identify the detail anatomy and the course of the anomalous left coronary artery origin (L-ACAOS). He was managed medically with dual antiplatelets, beta blockers, nitrates and ACE inhibitors.

Prehospital Events in ST- Elevation Myocardial Infarction Undergoing Primary Angioplasty.

INTRODUCTION: Pre-hospital delay includes time from onset of symptoms of myocardial infarction till arrival to emergency room of the hospital. This defines time from symptom onset to first medical contact and first medical contact to emergency room. This study aims to study the prehospital events and determining factors in patients undergoing primary angioplasty. METHODS: This was a cross sectional study in Shahid Gangalal National Heart Centre for three months. Timings of chest pain, first medical contact time, transfer time to hospital and overall pre-hospital time for PCI and risk factors were analysed. RESULTS: There were 79 cases with 66 (83.5%) males and 13 (16.5%) females with mean age 56±11.2 years. Risk factors were 60 (75.9%), smoking, 47 (59.5%) hypertension, 25 (31.6%) diabetes, 22 (27.8%) dyslipidaemia and 16 (20.3%) heart failure. Chest pain was maximum in 5 to 9 AM. The median prehospital delay was 300 minutes (5.0 hours) of which symptom to first medical contact was 165 minutes and first medical contact to hospital was 80 minutes. The longer median prehospital delay for hypertension, diabetes, female and age ≥50 years and the shorter for male, age less than 50 years, dyslipidemia and heart failure, though not statistically significant. Private transport was the preferred from symptom to first medical contact and ambulance for first medical contact to emergency room. Patients received in ER had aspirin 72 (91.1%), atorvastatin 54 (68.4%) and double anti-platelets 45 (57%). CONCLUSIONS: Chest pain was common in morning and the prehospital delay can be minimized by improving time from symptom to first medical contact and first medical contact to Emergency room.

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 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.

Bradycardia and severe hypotension caused by wild honey poisoning.

Wild honey is taken as an alternative medicine for the treatment of gastrointestinal diseases as well as for coronary artery disease. However, wild honey made from the nectar of some species of rhododendron may be poisonous. The cause of the poisoning is the toxin grayanotoxin. Grayanotoxin is a naturally occurring sodium channel toxin that causes life-threatening bradycardia, hypotension, and altered mental status. Complete heart blocks may occur in some patients. We present an interesting case of bradycardia and hypotension due to wild honey ingestion. The symptoms, mechanism, and management of wild honey poisoning are discussed.

Primary Percutaneous Coronary Intervention (PPCI) in acute myocardial infarction complicated with cardiogenic shock in a newly emerging cardiac center in Nepal.

BACKGROUND: Acute myocardial infarction (AMI) is complicated by cardiogenic shock in 7~10% of patients. Mortality rate is exceedingly high and reaches 70-80% in those treated conservatively. Large thrombolytic trials demonstrate 60% mortality with most effective thrombolytic agent. METHODS: In between September 2005 to August 2008 total PCI in Shahid Gangalal National Heart Center (SGNHC) in Nepal was 452. Among them primary PCI (PPCI) in AMI with cardiogenic shock was done in only 16 patients (3.5%). RESULTS: This study showed in-hospital mortality of 50% (n = 8). Of 50% (n = 8) alive patients with cardiogenic shock who underwent PPCI, 6 patients are in routine follow-up over 12 months and 2 were doing well in subsequent 6 months but not in follow up after that. CONCLUSION: Primary PCI in AMI complicated by cardiogenic shock has lower mortality and improved outcome. High cost, high in-hospital mortality and lack of trained personnel are major limitations.

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.