PSL301H1 Lecture Notes - Lecture 12: Mean Arterial Pressure, Systolic Hypertension, Pulse Pressure
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PSL301H1 Full Course Notes
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Blood flow and blood pressure: mean arterial pressure (map, baroreceptor reflex. Heart"s role is to create flow, and you need a vascular system to hold the pressure. Maintaining pressure is very important to keep flow going. Setting, regulation, and creation of pressure is the key focus. Focus on the mean arterial pressure, which is the light pink line. The drop of pressure throughout drives the blood through tissue. We inflate cuffs to the point where pressure of cuff > pressure of artery. This blocks out the artery and we see if we can hear the blood squeezing. As you start to release the pressure from cuff, the blood pressure then fights back. You get spurts of blood that comes through the vessel, which can be heard from stethoscope as blood tries to go through (systolic pressure) You hear more sounds until cuff falls below the diastolic pressure, then no more sounds.
