EXS 489 Study Guide - Quiz Guide: Sick Sinus Syndrome, Mitral Valve Prolapse, Lung Volumes
14 Nov 2017
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Lgl= shortened pr intervals less than . 12 secs closed. Phase 1= atrial contraction (mitral valve is open) Phase 2=isovolumic contraction (no change in volume, pressure is building) both valves. Phase 3=rapid ejection (aortic valve is open, mitral valve is closed) volume is decreased. Phase 4= reduced ejection (volume decreases, pressure is high) ** Phase 5= isovolumic relaxation (no change in volume , pressure is decreasing) Phase 7= reduced filling (volume is slower increasing, pressure isnt changing) pressure is increased. During filling (mitral valve is open and lvp is increasing, and lv is increasing) Sick sinus syndrome=fatigue confusion and chest pain. Fev1= forced expiratory volume in 1 sec. Vd= ventilatory dead space (gas exchange does not occur) Vulnerable window is within the absolute refractory period. Can be reversed by defibrillation (must start within 3 minutes) Pulmonary function with spirometer for all smokers. Tlc= vol of air in system after greatest inspiration. Rv= vol of air remaining in system after max expiration.
