First hea sound is soft in all, except:
Correct Answer: Sho PR interval
Description: Answer is A (Sho PR interval) Sho PR interval is associated with a Loud S,. SI is produced as a result of closure of AV valves. In sho PR interval mitral leaflets are at a greater distance from neutral as decreased interval between atrial contraction and ventricular systole does not allow them to return towards neutral before the ventricular contraction
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