Category: ECG / Electrophysiology

Idiopathic paroxysmal atrioventricular block without any preceding PP interval or PR interval prolongation and mostly a negative electrophysiological study.

Heart rate and blood pressure response in to head up tilt test in neurocardiogenic syncope is classified into types I, IIA, IIB and III.

Predictors of response to CRT: female, nonischemic, LBBB, QRS >/= 150 msec, prior hospitalization for HF, LVEDV >/= 125 mL/sq m, LA volume < 40 mL/sq m

QT interval is not increased with: a) Acidosis b) Hyperkalemia c) Hypercalcemia d) Digoxin e) All of the above f) None of the above

Poor R wave progression in chest leads is seen with: a) AWMI b) RBBB c) RVH d) RV infarction

Regarding concealed AV bypass tract, true statement: a) VA conduction does not occur b) Does not participate in AVRT c) VF will not occur if AF develops d) None of the above e)

Accelerated Idioventricular Rhythm (AIVR) is a ventricular rhythm originating from the Bundle of His, the Purkinje system or the ventricular myocytes.

ECG in myocarditis may show all except: a) LBBB b) Increase in QRS voltage c) Ventricular tachycardia d) Ventricular fibrillation

Catheter induced ectopy is due to irritation of the local endocardium and will show all the features of a target ventricular ectopic for ablation,

Pacemapping at potential ablation sites is done at a rate slightly faster than the ventricular tachycardia. The QRS morphology should be a 12/12 match of the clinical tachycardia.