Browsing by Author "Bohora, Shomu"
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Item Dilated Cardiomyopathy with Short QT Interval: Is It a New Clinical Entity?(PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY, 2009)Short QT syndrome is a rare autosomal dominant channelopathy of structurally normal hearts characterized by atrial fibrillation, ventricular arrhythmias, and sudden cardiac death. We report a case having short QT, dilated ventricles, and severe ventricular dysfunction, an unreported association so far. (PACE 2009; 32:688-690)Item Electrophysiology study and radiofrequency catheter ablation of atriofascicular tracts with decremental properties (Mahaim fibre) at the tricuspid annulus(EUROPACE, 2008)Aims The aim was to study the common mapping methods for Mahaim fibre and their role in radiofrequency ( RF) ablation.Methods and results Fifteen patients having Mahaim fibre tachycardia underwent electrophysiological study. Mahaim fibre mapping methods like (i) Mahaim potential ( M), (ii) shortest atrial stimulus-to-preexcitation (STP), and (iii) mechanical trauma induced loss of conduction were studied. Accessory pathway mapping was performed by M potential in 10 patients (67%), shortest atrial STP in 3 patients (20%), and mechanical trauma in 2 patients (13%). Mahaim fibre was localized at right atrial freewall of tricuspid annulus (8-10 o'clock) in 13 patients (87%), at 6.30 o'clock in one patient, and at 5 o'clock in 1 patient. Fourteen patients underwent RF ablation. Thirteen patients had complete loss of conduction over accessory pathway and one had partial modi. cation with a conduction delay. Radiofrequency ablation was not performed in one patient ( shortest STP group) due to its closeness to the compact atrioventricular node. Mahaim junctional acceleration during RF ablation was observed in all patients of M potential, 1 patient of mechanical trauma, and none of the atrial STP group. One patient ( M potential group) had tachycardia recurrence during follow-up.Conclusion Mahaim fibre is commonly located between 8 and 10 o'clock at tricuspid annulus. M potential guides to successful RF ablation in most patients. Mahaim junctional acceleration is commonly seen during RF ablation guided by M potential map.Item Late presentation of aortic root abscess in endocarditis with coronary ischemia.(Asian cardiovascular & thoracic annals, 2009)Formation of a large aortic root abscess is an infrequent complication of aortic valve endocarditis in adults. Extrinsic compression of the coronary arteries by this abscess is still rarer. Here, we report a case of a 22-year-old male with aortic root abscess, who presented 2 months after the completion of treatment of endocarditis with exertional angina. Coronary angiogram revealed compression of proximal left anterior descending and left circumflex arteries by the abscess. The patient was successfully treated with pericardial patch exclusion of the abscess cavity and coronary artery bypass graft. The presentation of aortic root abscess with myocardial ischemia as a late complication of treated endocarditis has not been reported earlier.Item Left atrial myxoma-influence of tumour size on electrocardiographic findings.(Indian heart journal, 2012)OBJECTIVE: The data of 51 patients (33 females) who underwent excision of left atrial (LA) myxoma were retrospectively reviewed for correlation of tumour size and electrocardiographic (ECG) findings.METHODS AND RESULTS: Mean age was 39.1 15 years (range 9-53 years). The LA enlargement (LAE) on ECG was defined by standard criteria. The LAE in ECG in these patients did not correlate with echocardiographic LA dimensions or with the degree of left ventricular (LV) inflow obstruction. But it was found that the presence of LAE in ECG predicted maximum tumour dimension of >5 cm and correlated with the degree of mitral regurgitation (MR). The LAE in ECG disappeared following surgery in 87.5% of patients.CONCLUSION: The LA enlargement on ECG in a patient with LA myxoma signifies larger tumour size or the presence of significant MR but is not necessarily associated with an increased LA size or LV inflow obstruction.Item Mahaim fiber accelerated automaticity and clues to a mahaim fiber being morphologically an ectopic or a split AV node.(Indian pacing and electrophysiology journal, 2010)Mahaim Fiber tachycardia characteristically causes a wide QRS tachycardia with left bundle branch morphology and left axis deviation, especially in young patients, having no structural heart disease. Mahaim fiber automaticity further cements the proposition of Mahaim fiber, due to its Atrioventricular (AV) node like property, being called as an ectopic AV node.Item Narrow Complex Tachycardia with Ventriculoatrial Dissociation-What is the Mechanism?(PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY, 2011)Item Serpigenous Calcification in the Heart(PEDIATRIC CARDIOLOGY, 2009)