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Question..............2 - psychmledr
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05-17-2012, 09:36 AM
Which of the following arterial pulse waveforms is consistent with severe left ventricular impairment?
A. Parvus et tardus pulse B. Bisferiens pulse C. Pulsus alternans D. Hyperkinetic pulse E. Dicrotic pulse
05-17-2012, 09:39 AM
A: aortic valve stenosis
B: aortic insufficency D & E : no clue  thank you
05-17-2012, 10:11 AM
Answer is "C".........Pulsus alternans
Pulsus alternans is a pattern during which the amplitude of the pulse changes or alternates in size with a stable heart rhythm. This is common in severe left ventricular dysfunction. A: Pulsus parvus, defined as a small weak pulse, is present when left ventricular stroke volume is decreased. A hypokinetic or weak pulse is commonly present due to conditions such as hypovolemia, heart failure, restrictive pericardial disease, or mitral stenosis. In pulsus tardus (late pulse) the systolic peak is delayed. It is common in aortic stenosis, because the left ventricular ejection is impeded because of the stenotic valve. B: A bisferiens pulse has two peaks and is common with aortic regurgitation. D: hyperkinetic pulse is a high-volume or bounding pulse. It is associated with one of the following : Increased left ventricular stroke volume High pulse pressure VSD and other conditons. E. Dicrotic pulse is seen in conditions characterized by low cardiac output. It differs from pulsus bisferiens in that in the dicrotic pulse, the first pulsation is systolic and the second is diastolic and immediately follows the second heart sound. Good job, Zen. You are welcome
05-17-2012, 10:16 AM
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