BIOC33H3 Lecture Notes - Biofeedback, Lipid Profile, Mean Arterial Pressure
25 Mar 2013
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There is a direct relationship between hypertension and cardiovascular disease (cvd). Contributing factors to the development of hypertension include cardiovascular risk factors combined with socioeconomic conditions and ethnic differences. Individuals who remain undiagnosed and untreated for hypertension present the greatest challenge and opportunity for health care providers. Bp is the force exerted by the blood against the walls of the blood vessel. It must be adequate to maintain tissue perfusion during activity and rest. Nitric oxide, an endothelium-derived relaxing factor (edrf), helps maintain low arterial tone at rest, inhibits growth of the smooth muscle layer, and inhibits platelet aggregation. Endothelin (et), produced by the endothelial cells, is an extremely potent vasoconstrictor: kidneys contribute to bp regulation by controlling sodium excretion and extracellular fluid (ecf) volume. Sodium retention results in water retention, which causes an increased. This increases the venous return to the heart, increasing the stroke volume, which elevates the bp through an increase in co: endocrine system:
