Abstract
Exercise induced myocardial ischemia may interfere in the increase of systolic volume and cause deflection in oxygen PuO2 curve. It could assess a reduced systolic volume. In systematic literature review, we founded a few manuscripts dealing with that matter: nine publications during 22 years, including 339 patients. The sensitivity and the specificity of PuO2 deflection were, respectively, 51% e 60%, reaching 87% and 74% when associated to VO2/ work rate slope. In sub group with extensive ischemia, peak PuO2 was reduced (12.8±3.8 vs. 16.4±4.6 ml/bpm - p < 0.05), showing the flattening of the curve during severe ischemia. After myocardial revascularization, it was related an increase in PuO2 (from 11.76 to 13.27 ml/bpm). There are indications that the use of cardiopulmonary testing may be useful in the diagnosis of coronary disease, detecting cases with the severe disease.
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