EMQ Revision Notes - Imperial College London

Machinery Murmur – caused by a patent ductus arteriosus, loudest during systole. HEART FAILURE ... Presentation. Patient has LVF which commonly has a Gallop rhythm. A 3rd or 4th heart sound occurring in sinus rhythm may give the impression of gallop. When S3 and S4 occur in tachycardia eg with PE, they may summate and appear as a single heart ... ................
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