Pulsus paradoxus is characteristically seen in cardiac tamponade. Absence of pulsus paradoxus is seen when cardiac tamponade is associated with all except one
Correct Answer: MR
Description: Mechanism of pulsus paradoxus:
Inspiration → increased RV filling and decreased LV filling → left shift of IVS → LV compression and decreased systolic arterial pressure.
Pulsus paradoxus is absent when cardiac tamponade occurs in a condition which permits equal filling of both ventricles or more filling of LV.
ASD= equal filling of both ventricles in both phases of respiration.
VSD=free communication between ventricles preventing differential filling.
AR= filling of LV is maintained irrespective of respiration
Category:
Medicine
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