BIOL 208 Lecture Notes - Lecture 14: Rheumatic Fever, Korotkoff Sounds, Heart Valve
5 Apr 2017
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Valvular diseases: valvular regurgitation -valves don"t shut tight enough- allows blood to go back. Ex. some blood goes back to atrium: stenosis - no backflow. Valves don"t open well (narrow: causes blood to go back. Results in pulmonary edema: rheumatic fever - autoimmune disease. Periods of intense pain and subsidence: result of infection from fever. Toxins of bacteria are damaging: antibodies attach to toxins and bacteria to phagocytize them, results in attacking bacteria, toxins and heart valves, heart valves- if damaged this results in regurgitation or stenosis. Pressure of blood against blood vessel walls. Blood goes from left ventricle to aorta. Pressure causes heart to fill up with blood. Causes stretching, maintain blood after the aorta and heart recoils. Korotkoff- sounds of blood pressure - systolic and diastolic: pulse pressure. **difference between systolic (120) and diastolic (80) pressures: mean arterial pressure (map, diastolic pressure + pulse pressure, ex. 80 + 13. 3 = 93. 3: capillary blood pressure.
