This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: CVS, Subject name: Medicine
Which is a contraindication to chemical cardioversion? 
Select and explain. 
A. Hea rate faster than 150 beats per minute, B. Symptomatic palpitations, C. Hemodynamically stable Atrial flutter patient., D. Hemodynamic instability
D: Hemodynamic instability
Answer: D: Hemodynamic instability 
Explanation: E.g. of chemical cardioversions Adenosine=PSVT Amiodarone= V.T Ibutilide= A. Fibrillation/A. Flutter Option A: No, it's not a C/I rather we'll use to suppress hea rate. Option B: No, it's not a C/I rather we'll use it to treat palpitations. Option C:No, its not a C/I rather chemical cardioversion is used in Atrial Flutter. Option D:If patient is Hemodynamically instable, one doesn't go for cardioversion.