Restoration of Normal Coronary Hemodynamics and Myocardial Metabolism after Percutaneous Transluminal Coronary Angioplasty
نویسنده
چکیده
Regional coronary blood flow and myocardial metabolism were evaluated in a patient who underwent percutaneous transluminal coronary angioplasty (PTCA). Angioplasty increased coronary luminal diameter and reduced trans-stenotic gradient. Before PTCA, angina pectoris developed during sustained rapid atrial pacing and was associated with abnormal lactate metabolism and a mild increase in coronary flow and myocardial oxygen consumption. After PICA, angina was absent during pacing and lactate extraction was preserved. Coronary flow and oxygen consumption were increased to a greater degree than before PICA. The temporal response of changes in coronary blood flow due to an abrupt increase in heart rate was also evaluated. Flow reached peak value more rapidly after PTCA. These observations suggest that PTCA may result in improved regional coronary blood flow and restoration of normal flow regulatory mechanisms and myocardial metabolism.
منابع مشابه
Restoration of normal coronary hemodynamics and myocardial metabolism after percutaneous transluminal coronary angioplasty.
Regional coronary blood flow and myocardial metabolism were evaluated in a patient who underwent percutaneous transluminal coronary angioplasty (PTCA). Angioplasty increased coronary luminal diameter and reduced trans-stenotic gradient. Before PTCA, angina pectoris developed during sustained rapid atrial pacing and was associated with abnormal lactate metabolism and a mild increase in coronary ...
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