This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pharmacology
Calcium channel blockers are used for all except 
Select and explain. 
A. Angina, B. Supraventricular Arrythymia, C. Sick sinus syndrome, D. Hypeension
C: Sick sinus syndrome
Answer: C: Sick sinus syndrome 
Explanation: Calcium channel blockers are contraindicated in sick sinus syndrome along with beta blockers . Sick sinus syndrome, also known assinus node dysfunction (SND), is adisorder of the sinoatrial (SA) node caused by impaired pacemaker function and impulse transmission producing a constellation of abnormal rhythms Refer kDT 6/e p532