Journal of cardiothoracic and vascular anesthesia
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J. Cardiothorac. Vasc. Anesth. · Feb 2001
Comparative Study Clinical TrialEarly neurobehavioral disorders after cardiac surgery: a comparative analysis of coronary artery bypass graft surgery and valve replacement.
To analyze neurobehavioral disorders in the early postoperative period after valve replacement and coronary artery bypass graft (CABG) surgery. ⋯ These results indicate that patients after valve replacement surgery have a higher risk of postoperative neuropsychologic alterations mainly attributable to temporal lobe dysfunction. This finding corresponds to a specific vulnerability of hippocampal structures to transient hypoxia.
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J. Cardiothorac. Vasc. Anesth. · Feb 2001
Comparative Study Clinical TrialComparison of two sites of inflow pressure measurement during retrograde cerebral perfusion.
To determine whether internal jugular venous valves influence inflow pressure during retrograde cerebral perfusion. ⋯ Internal jugular venous valves can obstruct retrograde cerebral perfusion inflow, manifest by an inflow pressure difference between the superior vena cava and internal jugular vein. In the presence of competent internal jugular venous valves, measurement of inflow pressure in the superior vena cava may be an inaccurate estimate of actual cerebral perfusion pressure. Internal jugular vein pressure should be monitored to avoid inadvertent cerebral hypoperfusion.
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J. Cardiothorac. Vasc. Anesth. · Feb 2001
Clinical TrialThe effects of recent aspirin ingestion on platelet function in cardiac surgical patients.
To examine the effects of the preoperative aspirin-free interval on platelet function in cardiac surgical patients. ⋯ Cardiac surgical patients who ingest aspirin < or =2 days preoperatively have greater impairment of platelet function than patients who have a longer preoperative aspirin-free interval.
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J. Cardiothorac. Vasc. Anesth. · Feb 2001
Another point of view on the mechanism of thrombin generation during cardiopulmonary bypass: role of tissue factor pathway inhibitor.
To determine the role of tissue factor and tissue factor pathway inhibitor (TFPI) in coagulation activation during cardiopulmonary bypass (CPB). ⋯ These data indicate that TFPI release by heparin probably has an important role in the suppression of the tissue factor-dependent coagulation pathway during CPB. These changes occur along with ongoing thrombin generation and its activation. Either insufficient prevention of thrombin generation by TFPI or indirect activation of the intrinsic coagulation pathway occurs during CPB.
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J. Cardiothorac. Vasc. Anesth. · Feb 2001
Clinical TrialIntraoperative transesophageal ultrasonography can measure renal blood flow.
To determine the feasibility of acquiring Doppler-derived indices of renal blood flow by transesophageal ultrasonography in the perioperative period. ⋯ This study demonstrates the ability to acquire two-dimensional images of kidney and renal arterial Doppler velocities using transesophageal ultrasonography during cardiac surgery. Transesophageal renal arterial Doppler waveform analysis can follow changes in renal blood flow patterns secondary to interventional therapy.