This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Pacemaker is indicated in which of the following condition: September 2007 
Select and explain. 
A. Acute myocardial infarction with first degree AV block, B. Acute myocardial infarction with fascicular block, C. Sick sinus syndrome, D. Sick sinus syndrome
C: Sick sinus syndrome
Answer: C: Sick sinus syndrome 
Explanation: Ans. C: Sick sinus syndrome Pacemaker indications Absolute indications for pacemaker placement include the following: Sick sinus syndrome Symptomatic sinus bradycardia Tachy-brady syndrome Atrial fibrillation with sinus node dysfunction Third-degree block/Complete AV block Chronotropic incompetence (inability to increase the hea rate to match a level of exercise) Prolonged QT syndrome Cardiac resynchronization therapy with biventricular pacing Acute myocardial infarction with second or third degree AV block Relative indications include the following: Cardiomyopathy (hyperophic or dilated) Severe refractory neurocardiogenic syncope