Episode 47: Arterial Lines with Stephen Freiberg
Anesthesia and Critical Care Reviews and Commentary (ACCRAC) Podcast
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The Diastolic Runoff
The next component of the waveform is the systolic decline, and this is the rapid decline in arterial blood pressure as the ventricular contraction comes to an end. This is followed by the dichrotic notch which represents closure of the aortic valve. A suspiciously low dichrotic score could suggest poor vascular compliance or hypovolemia. And then finally is the end diastolic pressure, which is the pressure exerted by the vascular tree back upon the aorta.
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