Journal of cardiothoracic and vascular anesthesia
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J. Cardiothorac. Vasc. Anesth. · Aug 1992
Anesthesia for bilateral lung transplantation without cardiopulmonary bypass: initial experience and review of intraoperative problems.
Bilateral lung transplantation (BLT) is a recently described procedure based on two sequential single-lung transplantations (SLT), which are performed by a transverse sternobithoracotomy. It does not require either cardiac arrest or routine use of cardiopulmonary bypass (CPB). The intraoperative management of 10 patients suffering from end-stage pulmonary disease is reported. ⋯ With chest closure, PVR returned to nearly normal values (range, 57-293, mean 167 dynes.s.cm-5) and Qva/Qt increased (range, 3 to 36, mean 20%). This limited series demonstrates that CPB is optional during this procedure. Good selection of recipients and donors, good lung preservation methods, and a short duration of cold ischemia are essential to success.
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J. Cardiothorac. Vasc. Anesth. · Aug 1992
Resident clinical competence in cardiac anesthesia: a case performance-based evaluation study.
The purpose of this study was to estimate the minimum number of cases that anesthesiology residents need to complete in order to master the clinical skills required in cardiac anesthesia. In addition, the extent to which the resident's general anesthesia experience and in-training examination scores influence clinical performance was also studied. The data presented were based on observation of 99 actual cases, which were managed by 16 residents. ⋯ The minimum number of cardiac cases that residents needed to manage before achieving a satisfactory level of skill ranged from about 10 cases for preoperative assessment to 20 to 30 cases for hemodynamic and coagulation management. It is concluded that residents needed different lengths of time to develop different skills, and it is logical to look at each basic skill independently in the evaluation of resident progress. Based on the findings of this study, it is suggested that a case performance-based evaluation approach might provide a more objective and accurate means for assessing resident progress in cardiac anesthesia.
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J. Cardiothorac. Vasc. Anesth. · Aug 1992
Transesophageal Echo-doppler evaluation of the hemodynamic effects of positive-pressure ventilation after coronary artery surgery.
Transesophageal echocardiography was used to extend knowledge about the impact of positive end-expiratory pressure (PEEP) during mechanical ventilation on right and left ventricular function and right ventricular impedance. At 20 cmH2O PEEP, a progressive increase of right ventricular end-diastolic area was seen (27%) that coincided with a reduction of early left ventricular filling velocity (25%) across the mitral valve, and a decrease of both pulmonary artery flow velocity (end-expiration 27% and end-inspiration 42%) and time-velocity index (end-inspiration 25%). As these changes were not accompanied by a change of the fractional area of contraction, the increase of the right ventricular diameter might be explained by right ventricular compensation due to an imbalance between augmented right ventricular impedance and reduced venous return.
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J. Cardiothorac. Vasc. Anesth. · Jun 1992
Randomized Controlled Trial Comparative Study Clinical TrialReduction in blood loss and blood use after cardiopulmonary bypass with high-dose aprotinin versus autologous fresh whole blood transfusion.
Ninety patients undergoing cardiac surgery were randomly divided into three groups of 30 patients to compare the effects on bleeding and transfusion requirements of either intraoperative infusion of high-dose aprotinin (GpI) or reinfusion of autologous fresh whole blood (GpII) versus a control group (GpIII). Standardized anesthetic, perfusion, and surgical techniques were used. Platelet counts, hemoglobin concentration, hematocrit, fibrinogen, and Ivy-Nelson bleeding times determined at fixed times perioperatively did not differ among the three groups. ⋯ No GpI patient required transfusion of platelets or fresh frozen plasma. Fresh whole autologous blood transfusions had no significant hemostatic effect and failed to reduce the homologous blood requirement. Conversely, high-dose aprotinin reduced blood loss and transfusion requirements.