Narayanan Namboodiri
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View article: Cardiac Enigma: Investigating the Causes of Unexpected Pacing Cessation
Cardiac Enigma: Investigating the Causes of Unexpected Pacing Cessation Open
A young adult in their 20s with recurrent presyncope, a diagnosed case of complete heart block, underwent a dual-chamber pacemaker implantation with left bundle branch area pacing (LBBAP). An immediate post-procedure electrocardiogram (ECG…
View article: Beyond the blueprint: decoding calmodulinopathy—a case report showcasing the utility of multifaceted treatments
Beyond the blueprint: decoding calmodulinopathy—a case report showcasing the utility of multifaceted treatments Open
Background Calmodulinopathies are adrenergically-induced life-threatening arrhythmias. Available therapies are disquietingly insufficient, especially for CALM-LQTS (calmodulinopathy-associated long QT syndrome). This case report illustrate…
View article: Clinical, Imaging, and Atrial Cardiopathy Markers in Ischemic Stroke Subtypes – Clues to a Cardioembolic Source
Clinical, Imaging, and Atrial Cardiopathy Markers in Ischemic Stroke Subtypes – Clues to a Cardioembolic Source Open
Background and Objectives: Cryptogenic strokes account for 20%–25% of all ischemic strokes. Although atrial cardiopathy markers are more prevalent in the cryptogenic embolic stroke of undetermined source (ESUS) subgroup than in the nonembo…
View article: Clinical profile of restrictive cardiomyopathy in children at a South Indian tertiary care cardiac center: A retrospective three decade experience
Clinical profile of restrictive cardiomyopathy in children at a South Indian tertiary care cardiac center: A retrospective three decade experience Open
Background: Research on pediatric restrictive cardiomyopathy (RCM), especially from the developing world, is limited. The study aimed to describe the clinical features and outcomes of childhood RCM and the predictors of outcome. Methods: T…
View article: Phenotypes of South Asian patients with atrial fibrillation and holistic integrated care management: cluster analysis of data from KERALA-AF Registry
Phenotypes of South Asian patients with atrial fibrillation and holistic integrated care management: cluster analysis of data from KERALA-AF Registry Open
Kerala Chapter of Cardiological Society of India.
View article: Rare Presentations of Takayasu Arteritis: A Case Series
Rare Presentations of Takayasu Arteritis: A Case Series Open
Takayasu arteritis (TA) is a form of large vessel vasculitis that may lead to fibrosis, stenosis, or aneurysm formation of vessels. Its presentation varies depending on the arterial beds involved. We report 3 cases out of around 150 cases …
View article: A Fascinating Electrocardiogram with an Apparent Alternating PR Interval
A Fascinating Electrocardiogram with an Apparent Alternating PR Interval Open
A man in his 60s presented with occasional giddiness to the emergency department. Clinical examination and echocardiogram were within normal limits. His electrocardiogram was reported as having sinus arrhythmia with alternate PR interval p…
View article: Management of patients with an electrical storm or clustered ventricular arrhythmias: a clinical consensus statement of the European Heart Rhythm Association of the ESC—endorsed by the Asia-Pacific Heart Rhythm Society, Heart Rhythm Society, and Latin-American Heart Rhythm Society
Management of patients with an electrical storm or clustered ventricular arrhythmias: a clinical consensus statement of the European Heart Rhythm Association of the ESC—endorsed by the Asia-Pacific Heart Rhythm Society, Heart Rhythm Society, and Latin-American Heart Rhythm Society Open
Electrical storm (ES) is a state of electrical instability, manifesting as recurrent ventricular arrhythmias (VAs) over a short period of time (three or more episodes of sustained VA within 24 h, separated by at least 5 min, requiring term…
View article: Long-term outcome of permanent epicardial pacemaker implantation in neonates: Experience from an Indian center
Long-term outcome of permanent epicardial pacemaker implantation in neonates: Experience from an Indian center Open
Introduction: Permanent pacemaker implantation (PPI) in neonates is challenging with respect to indications, device selection, implantation technique, and long-term outcomes. Complex anatomy, the need for long-term pacing with high rates, …
View article: Feasibility of cardiac magnetic resonance imaging in temporary permanent pacemaker implants in pediatric myocarditis and complete atrioventricular block
Feasibility of cardiac magnetic resonance imaging in temporary permanent pacemaker implants in pediatric myocarditis and complete atrioventricular block Open
Background Diagnosing myocarditis in children presenting with complete AV block (CAVB) is challenging. Temporary permanent pacing support using standard transvenous active fixation lead can be inserted percutaneously until recovery. Howeve…
View article: Cryoablation for the Para-Hisian accessory pathway: Early Indian experience
Cryoablation for the Para-Hisian accessory pathway: Early Indian experience Open
Sir, Ablating Para-Hisian accessory pathways in an effective way that prevents conduction system damage continues to be a challenge for electrophysiologists.[1] The rates of inadvertent atrioventricular (AV) block with radiofrequency (RF) …
View article: Bump termination of an atriofascicular tachycardia. Where is the level of block?
Bump termination of an atriofascicular tachycardia. Where is the level of block? Open
This electrophysiological tracing localizes the level of block distal to the recorded Mahaim potential during bump termination mapping of an atriofascicular pathway at the tricuspid annulus.
View article: Response to spontaneous and induced His refractory ventricular premature beats during long <scp>RP</scp> tachycardia: What is the mechanism?
Response to spontaneous and induced His refractory ventricular premature beats during long <span>RP</span> tachycardia: What is the mechanism? Open
This electrophysiology tracing demonstrates a graded postexcitation response of the retrograde limb of an orthodromic reentrant tachycardia circuit with varying His refractory VPB coupling intervals, which reiterates the decrementally cond…
View article: Ventricular dysfunction after permanent pacemaker implantation in children - what are the implications?
Ventricular dysfunction after permanent pacemaker implantation in children - what are the implications? Open
Introduction Children (<18 years of age) account for less than 1% of patients requiring permanent pacemaker implantation (PPI), but form a complex subset of population due to technical difficulties, higher prevalence of structural abnor…
View article: Left cardiac sympathetic denervation in children with Jervell Lange‐Nielsen syndrome and drug refractory torsades – A case series
Left cardiac sympathetic denervation in children with Jervell Lange‐Nielsen syndrome and drug refractory torsades – A case series Open
Introduction Long QT syndrome is an inherited malignant channelopathy which leads to life‐threatening arrhythmia, with multiple genotypes. Jervell and Lange‐Nielsen syndrome (JLNS) is an autosomal recessive subtype of this disease, charact…
View article: Utility of late gadolinium enhancement on magnetic resonance imaging in hypertrophic cardiomyopathy patients in an Indian cohort
Utility of late gadolinium enhancement on magnetic resonance imaging in hypertrophic cardiomyopathy patients in an Indian cohort Open
This prospective observational study sought to correlate segmental late gadolinium enhancement (LGE) seen in cardiac magnetic resonance imaging with occurrence of ventricular arrhythmias (VAs) in patients with hypertrophic cardiomyopathy. …