system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Propranolol is useful in the treatment of all of the following except
assistant
The correct answer is  Ref-KDT 6/e p142,143 Beta blockers are contraindicated in hea block because this can conve paial AV block to complete AV block. These agents are the drugs if choice for HOCM