IMG_0022 - artery Dicrotic Notch: there is an intem-rption...

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MEASURING BLOOD PRESSURE Btood pressure (BP) is the force that blood exerts against the vessel walls. The pumping action of the heart generates blood flow (Q). BP results when the Q is met by resistance (R) from the vessel walls. BP is measured in mm Hg. Larninar flow is the smooth fast flow of blood in the center of a vessel. It is due to the friction between the blood and the walls. pulse : the preszure wave which starts from the heart and travels throughout the arteries. It fluctuates with each heartbeat. Systolic Pressure Pulse Pressure Systolic Pressure (120 mrn Hg) : maximum pressure exerted by the blood against tt " u.t"fr *utt*. tt ls due to ventricular contraction and is the highest pressure in the
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Unformatted text preview: artery Dicrotic Notch: there is an intem-rption in Q due to the back flow of blood, which closes the aortic semilunar valve. Diastolic Pressure (80 mm Hg) : lowest pressure in the artery. It is due to ventricular relaxation. pulse pressure : Systolic Pressure - Diastolic Pressure. It's the throb felt when the pulse is taken. MAp Mean Arterial Pressure) : the average pressure in the arteries. It is not *u,".u@o[cpressuresbecausediastotre1asts1onger'Itis therefore, closer to the diastolic pressure. This is the force that propels blood to the tissues throughout the cardiac cycle. : diastolic pressure + 1/3 pulse pressure Diastolic Pressure g{...
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This note was uploaded on 12/14/2011 for the course PHYS 345 taught by Professor Dr.abdirkin during the Spring '11 term at St. Thomas FL.

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