Evidence demonstrating the potential value of cardiopulmonary exercise testing (CPET) to accurately detect myocardial ischemia secondary to macro-vascular disease is beginning to emerge. Despite distinct mechanisms mediating ischemia in micro-vascular and macrovascular coronary artery disease (CAD), the net physiologic effect of exercise-induced left ventricular (LV) dysfunction is common to both. The abnormal physiologic response to CPET may, therefore, be similar in patients with macro- and micro-vascular ischemia. The following case report describes the CPET abnormalities in a patient with suspected microvascular CAD and the subsequent improvement in LV function following three weeks of medical therapy with the anti-ischemic drug ranolazine.
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| http://dx.doi.org/10.1016/j.ijcard.2009.01.055 | DOI Listing |
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