Journal of anesthesia
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Journal of anesthesia · Jan 2007
Case ReportsAnesthetic management of simultaneous coronary artery bypass grafting and cardiac pheochromocytoma resection under cardiopulmonary bypass.
We experienced simultaneous coronary artery bypass grafting and cardiac pheochromocytoma resection under cardiopulmonary bypass in a 79-year-old woman with atherosclerotic angina. During manipulation of the tumor under cardiopulmonary bypass, the serum norepinephrine concentration increased to over seventy times the normal limit, and there was a 25-mmHg rise in mean arterial pressure. ⋯ However, the serum catecholamine concentration surged in our patient during tumor manipulation under cardiopulmonary bypass, probably because of the reperfused blood from the operating field. We suggest that cardiopulmonary bypass be performed for the anesthetic management of cardiac pheochromocytoma resection, because excessive hypertension can be avoided during cardiopulmonary bypass, even if the catecholamine concentration increases excessively when handling the tumor.
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Journal of anesthesia · Jan 2007
Case ReportsRopivacaine-induced toxicity with overdose suspected after axillary brachial plexus block.
Ropivacaine has a high threshold for systemic toxicity. We report and highlight a rare case in which an overdose of ropivacaine was suspected of leading to a generalized convulsion following the injection of this agent for axillary brachial plexus block (ABPB). A 25-year-old woman (height, 153 cm; weight, 48 kg; American Society of Anesthesiologists physical status I) was scheduled for finger surgery with ABPB. ⋯ She recovered with no sequelae. Limited cases have indicated high efficacy and sufficient safety for the use of 300 mg ropivacaine for ABPB. However, the toxic threshold of ropivacaine remains unclear, and the dose should be calculated in relation to the weight of the patient to prevent severe toxic complications.
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Journal of anesthesia · Jan 2007
The skin-traction method increases the cross-sectional area of the internal jugular vein by increasing its anteroposterior diameter.
We developed a novel "skin-traction method" in which the puncture point of the skin over the internal jugular vein (IJV) is stretched upward with several pieces of surgical tape in the cephalad and caudad directions to facilitate cannulation of the IJV. We investigated whether this method increases the cross-sectional area of the IJV. ⋯ This method significantly increased the cross-sectional area of the RIJV by increasing the anteroposterior diameter of the RIJV. Even in the flat position, this method was almost as efficacious as the Trendelenburg position. This method thus appears to facilitate IJV cannulation.
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Journal of anesthesia · Jan 2007
Comparative StudyPrognostic value of serum myoglobin in patients after cardiac surgery.
Serum myoglobin as a marker of myocardial damage and injury has been shown to be of prognostic value in patients with cardiovascular events. In this study, we analyzed the prognostic value of serum myoglobin in comparison to other parameters of muscle damage and renal function in patients after cardiac surgery. ⋯ Serum myoglobin is associated with outcome in patients after cardiac surgery. Prediction of ICU mortality and need for RRT was comparable for myoglobin and creatinine, while both were significantly superior to CK.
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Journal of anesthesia · Jan 2007
Impact of Sonoclot hemostasis analysis after cardiopulmonary bypass on postoperative hemorrhage in cardiac surgery.
The Sonoclot Analyzer provides a functional test of whole blood coagulation by measuring the viscous property of the blood sample. In this study, we used a modified Sonoclot assay, using cuvettes with a glass bead activator containing heparinase, and compared the Sonoclot data before and after cardiopulmonary bypass (CPB) to assess the usefulness in predicting postoperative hemorrhage. ⋯ Our results suggest that abnormal postoperative hemorrhage can be predicted by Sonoclot analysis with a new glass bead-activated heparinase test performed after CPB.