Journal of cardiothoracic and vascular anesthesia
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J. Cardiothorac. Vasc. Anesth. · Feb 1998
Randomized Controlled Trial Clinical TrialQuantification of mitral regurgitant flow using proximal isovelocity surface area method: a transesophageal echocardiography perioperative study.
To investigate the usefulness of the color Doppler proximal isovelocity surface area (PISA) method, compared with the jet area method, in determining the severity of mitral regurgitation in the perioperative period using angiographic grading as a reference method. ⋯ It was concluded that in patients with mitral regurgitation during the perioperative period, the PISA method is more suitable than the jet area method to determine the severity of mitral regurgitation, and only it provides a reliable technique to differentiate between grade I-II mitral regurgitation in patients with eccentric regurgitant jet and grade III-IV mitral regurgitation in patients with jet size that is bigger than transesophageal echocardiography left atrial size.
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J. Cardiothorac. Vasc. Anesth. · Feb 1998
Relationships between cerebral blood flow velocities and arterial pressures during intra-aortic counterpulsation.
To determine the effects of intra-aortic counterpulsation (IABP) on cerebral blood flow velocity. ⋯ IABP modified the phasic profile of cerebral blood flow to reflect the arterial pressure waveform without affecting mean cerebral blood flow velocity. Peak systolic cerebral blood flow velocity was maintained in augmented beats despite the decreased systolic arterial pressure associated with afterload reduction. The acute decrease in cerebral blood flow velocity at pre-ejection was balanced by increased cerebral blood flow velocity during balloon inflation in diastole.
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J. Cardiothorac. Vasc. Anesth. · Dec 1997
Randomized Controlled Trial Clinical TrialA pump-prime aprotinin dose in cardiac surgery: appraisal of its effects on the hemostatic system.
To examine pump-prime aprotinin action on coagulation and fibrinolysis in patients undergoing primary coronary revascularization. ⋯ Pump-prime aprotinin minimized, even if not completely inhibited, the activation of coagulation and fibrinolysis during CPB, possibly ensuring a less complicated and safer postoperative recovery. It seemed to allow the maintenance of a correct balance of hemostatic systems, avoiding the risk of thrombotic phenomena.
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J. Cardiothorac. Vasc. Anesth. · Dec 1997
Comparative StudyComparison of the effects of red cell separation and ultrafiltration on heparin concentration during pediatric cardiac surgery.
To determine the effects of red cell separation and ultrafiltration on heparin concentration. ⋯ The plasma concentration of heparin increased after veno-venous modified UF of the patient. Heparin concentration also increased after UF of residual CPB circuit blood. In contrast, circuit blood hemoconcentrated by CS contained minimal heparin, and, when infused, did not increase patient's heparin concentration. ACT and thrombin time did not correlate with heparin concentration.