Journal of cardiothoracic and vascular anesthesia
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J. Cardiothorac. Vasc. Anesth. · Oct 2004
Comparative Study Clinical TrialArterial versus venous sampling for activated coagulation time measurements during cardiac surgery: a comparative study.
Activated coagulation times (ACTs) are widely used for monitoring anticoagulation during cardiac surgery. Significant variability of this test is well known. Variability in test results was studied, which may arise from the sample drawing site. ⋯ During the period of systemic anticoagulation, there is great individual variability between ACT measures obtained from venous and arterial samples. Further studies are required to analyze the cause of differences at the baseline and the source of variable coagulation times after heparin.
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J. Cardiothorac. Vasc. Anesth. · Oct 2004
Clinical TrialMidlatency auditory-evoked potentials in the assessment of sedation in cardiac surgery patients.
Midlatency auditory-evoked potentials (MLAEPs) may provide an objective measure of depth of sedation. The aim of this study was to evaluate MLAEPs for measuring sedation in cardiac surgery patients. ⋯ MLAEP latencies can reflect subtle changes in auditory perception, while amplitudes seem to change with transition between deep levels of sedation.
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J. Cardiothorac. Vasc. Anesth. · Oct 2004
Clinical TrialAccuracy and performance of a modified continuous intravascular blood gas monitoring device during thoracoscopic surgery.
The only commercially available continuous intravascular blood gas monitoring system for adults, the Paratrend (Diametrics Medical Inc, High Wycombe, UK), was modified by the manufacturer to the Paratrend 7+ (PT7+) in 1999. The aim of this study was to evaluate the modified probe over a wide range of blood gas and pH values during thoracoscopic surgery in a similar setup as done with the previous model. ⋯ In patients undergoing thoracoscopic surgery with rapidly changing blood gas parameters, the PT7+ device is a valuable trend indicator and hence may be helpful for clinical decision making. However, the underestimation of PO(2) values by 20 mmHg on average and the wide limits of agreement documented in this study must be regarded as limiting factors.
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J. Cardiothorac. Vasc. Anesth. · Oct 2004
Clinical TrialCerebral oxygen desaturation is associated with early postoperative neuropsychological dysfunction in patients undergoing cardiac surgery.
To evaluate the relationship between cerebral oxygen saturation and neuropsychological dysfunction after cardiac surgery. ⋯ Intraoperative cerebral oxygen desaturation is associated with early postoperative neuropsychological dysfunction in patients undergoing cardiac surgery with cardiopulmonary bypass. However, it remains to be determined whether interventions to maintain adequate cerebral oxygenation may improve neuropsychological outcome.