new_n_lost
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Which of the following does NOT cause reversed splitting of the second heart sound?
A. Left bundle branch block
B. Hypertrophic cardiomyopathy
C. Aortic stenosis
D. Pericardial effusion
E. Wolf Parkinson White syndrome
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| Aashi
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D. Pericardial effusion
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| usmle4me
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Pericardial effusion.There is fixed splitting.
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| new_n_lost
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| new_n_lost
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Answer: D) Pericardial effusion. LBBB and left heart strain in HCM and aortic stenosis can cause reversal of A2P2 second heart sounds. Also, in type B wolf parkinson white syndrome, early activation of the right ventricle through an accessory pathway can cause P2 to close prematurely
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FORUM RULES-- Those who believe in telekinesis, raise my hand. I get enough exercise just by pushing my luck --P4U World.." The pure and simple truth is rarely pure and never simple."
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