OBJECTIVE: The aim of this study is to evaluate immediate hemodynamics evolution in myocardial revascularization with intermittent aortic cross-clamping, using or not a preconditioning protocol. MATERIAL AND METHODS: Thirty-five patients underwent myocardial revascularization, they were randomized in two groups: the control group (18) with intermittent aortic-clamping, and the preconditioning group (17) with two short aortic-clamping before the onset of conventional intermittent clamping. In both groups the patients' mean arterial pressure (mAP), pulmonary capillary wedge pressure (PCWP), cardiac index (CI), left ventricular stroke work index (LVSWI) were monitored before the onset of the cardiopulmonary bypass (moment 1) and the sternal suture (moment 2), and, postoperatively at six/twelve/eighteen/twenty-four hours (moments 3, 4, 5 and 6, respectively). Also the patients' left ventricular ejection fraction (LVEF) was controlled through echocardiogram, in moments 1 and 2. RESULTS: None statistical differences was seen between groups, however occurred a growth in CI and LVEF after revascularization. All patients presented good clinical evolution. CONCLUSION: The hemodynamic evolution was similar between the groups.
Myocardial revascularization; Myocardial revascularization; Hemodynamics; Extracorporeal circulation; Aortic clamping; Myocardial protection; Myocardial revascularization; Myocardial revascularization
