EDKP 485 Lecture Notes - Lecture 1: Bronchodilator, Ischemia, Shortness Of Breath
10 Jan 2017
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Document Summary
Cpet permits simultaneous examination of responses of 1- cardiovascular & 2- ventilatory support systems. *cpet evaluate responses to standardized stress *if not cannot identify if efficient/to compare. In context of disease cpet permits systematic examination into pathophysiological mechanisms of. Exercise intolerance & exertional symptoms = fatigue/ dyspnea/ chest pain- angina. Exercise stress = need to have stress to provoke symptoms because most patients adapt phys. Peak vo2 / work rate >85% of age - sex - height. 3-4% o2 desaturation = normal by bohr effect. Wasted ventilation/oxygen desaturation but > 3-4% = impairment in pulmonary ventilation. Cause behavioral exercise intolerance - panic & anxiety. Either not performing well because cannot do better. Or do not want to do better - poor effort. Are symptoms abnormally high at low level of exercise capacity & not expected. Cause to symptoms disease: differential diagnosis, measure impairment for. Health: rehabilitation, assess pre-operative risk, grade severity & prognosis in cardiopulmonary disease, evaluate effectiveness of.
