Cardiophile MD Archive

Stoke risk is increased risk 4-5 fold with atrial fibrillation (AF). On treatement analysis of AFFIRM data found that only two markers of survival advantage was sinus rhythm and use of warfarin. They concluded that if a drug with less side effects for maintaining rhythm in AF is found, rhythm control would be superior to [...]

Click on the images for a larger view Multifocal atrial tachycardia is defined as three or more different types of P waves occuring at a rate more than 100 per minute. In the second rhythm strip there is a pause before the onset of sinus rhythm after the tachycardia terminates. This could be due to down regulation [...]

Atrial fibrillation with slow ventricular rate and left ventricular hypertrophy. Slow ventricular rate is due to suppresion of the atrioventricular conduction either due to drugs or due to disease of the atrioventricular node. Left ventricular hypertrophy is manifest as tall R waves with ST segment depression in lateral leads. Digoxin effect could also contribute both [...]

Congenital short QT syndrome is new inherited clinical syndrome which was described by Gussak et al in 2000. (Cardiology. 2000;94:99-102). A gene mutation causing short QT syndrome was first demonstrated by Brugada et al in January 2004. This mutation in HERG (KCNH2) gene was later called as SQT1 and was due to gain in function [...]

What causes cardiac arrhythmia? Myocardial factors like ischemia, infarction and myocarditis Autonomic imbalance like sypmathetic and parasympathetic overactivity or underactivity Electrolyte imbalance like hypokalemia and hypomagnesemia Hypoxia Drugs like antiarrhythmic agents and psychotropic agents Genetic disorders – Channelopathies like Brugada syndrome, long QT syndrome and short QT syndrome Common supraventricular tachyarrhythmias Atrial fibrillation Atrial flutter [...]