Category: ECG / Electrophysiology

Atrial flutter ECG

Serial ECGs showing disappearance of WPW syndrome pattern of pre-excitation.

ECG leads V1H to V6H are recorded one intercostal space above the conventional position, and leads V1L to V6L are recorded one intercostal space below.

Type A right ventricular hypertrophy is characterized by: a. Dominant R wave in V1 without deep S wave in V6 b. Dominant R wave in V1 and deep S wave

Gradient in aortic stenosis can be estimated from: a. Sub costal view and PSAX b. Apical 5C view and suprasternal view c. PSAX view and PLAX view d. Subcostal view and PSAX

NOT a feature of Wenckebach AV block: A. Progressive prolongation of PR interval followed by a dropped QRS B. Progressive shortening of RR interval C. Incremental increments in PR interval D. Longest

The important structure seen in the triangle of Koch is: A. Sinoatrial node B. Suprascapular artery C. Femoral artery D. Atrioventricular node

Which of the following antiarrhythmic drugs is least likely to cause torsades de pointes? A. Amiodarone B. Quinidine C. Sotalol D. Procainamide

Characteristic reperfusion arrhythmia: A. Atrial fibrillation B. Junctional tachycardia C. Accelerated idioventricular rhythm D. Torsades de pointes

Mechanism of action of ranolazine: A. Inhibits late Na current B. Inhibits beta receptors C. Inhibits L – type Ca channels D. Inhibits transient outward K current