Journal of cardiothoracic and vascular anesthesia
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J. Cardiothorac. Vasc. Anesth. · Apr 2009
Comparative StudyA comparison of urinary neutrophil gelatinase-associated lipocalin in patients undergoing on- versus off-pump coronary artery bypass graft surgery.
The purpose of this study was to compare urinary neutrophil gelatinase-associated lipocalin (NGAL) levels in off-pump and on-pump coronary artery bypass graft (CABG) surgery. ⋯ Urinary NGAL was not different in patients undergoing off-pump and on-pump CABG surgery despite a very good match between the groups with respect to pre- and intraoperative risk factors.
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J. Cardiothorac. Vasc. Anesth. · Apr 2009
Clinical TrialPredicted and measured plasma propofol concentration and bispectral index during deep sedation in patients with impaired left ventricular function.
To evaluate the ability of the Schnider pharmacokinetic model to predict plasma propofol concentration during target-controlled propofol infusion in patients with impaired left ventricular function and to investigate the predictive value of the bispectral index (BIS) to indicate deep sedation in this patient group. ⋯ The pharmacokinetic model used markedly underestimated propofol plasma levels in the patient group studied. The large variability among patients suggests that BIS monitoring is not suitable for indicating an exact endpoint corresponding to deep sedation.
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J. Cardiothorac. Vasc. Anesth. · Apr 2009
Decreased nitric oxide products in the urine of patients undergoing cardiac surgery.
Renal vasoconstriction has been blamed as a cause of perioperative renal dysfunction after cardiac surgery. Endothelial function is a critical determinant of vascular tonus, including vasoconstriction. The objective of this study was to establish whether the release of the endothelial vasodilator nitric oxide (NO) or NO products is altered in patients undergoing surgery with cardiopulmonary bypass in 3 different clinical conditions. ⋯ Cardiac surgery with cardiopulmonary bypass is associated with a significant decrease of NO products. In the absence of kidney damage, decreased NO products could represent a physiologic response to cardiopulmonary bypass; however, endothelial dysfunction cannot be excluded.