Journal of cardiothoracic and vascular anesthesia
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J. Cardiothorac. Vasc. Anesth. · Jun 2004
Randomized Controlled Trial Clinical TrialMagnesium in addition to sotalol does not influence the incidence of postoperative atrial tachyarrhythmias after coronary artery bypass surgery.
Postoperative atrial tachyarrhythmias (POATs) after coronary artery bypass grafting (CABG) are reported in 11% to 40% of patients. Several etiologic factors are mentioned. Prophylactic intervention with sotalol is reported to reduce the incidence of POAT. The authors studied the effect of magnesium chloride (MgCl2) in addition to sotalol in the prevention of POAT. ⋯ These results show that MgCl(2), in addition to sotalol, is not more effective than sotalol alone in the prevention of tachyarrhythmias after CABG. The data showed that this combination may also induce serious bradyarrhythmias.
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J. Cardiothorac. Vasc. Anesth. · Jun 2004
Risk factors for perioperative myocardial ischemia in carotid artery endarterectomy.
To identify variables associated with perioperative myocardial ischemia in patients undergoing carotid artery endarterectomy (CEA). ⋯ The data indicate that perioperative myocardial ischemia defined as an ECG abnormality does not often occur in patients undergoing CEA. However, angina and hypertension may be important risk factors warranting further investigation.
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J. Cardiothorac. Vasc. Anesth. · Jun 2004
Magnesium deficiency alters the threshold for epinephrine-induced arrhythmias during halothane or sevoflurane anesthesia in the rat.
To determine the effect of chronic magnesium (Mg2+) deficiency on the relative arrhythmogenicity of halothane and sevoflurane in the rat. ⋯ Chronic Mg2+ deficiency decreased the threshold for epinephrine-induced arrhythmias and attenuated differences between the arrhythmogenic potential of halothane and sevoflurane, suggesting that arrhythmias are as likely to develop with sevoflurane as with halothane in the presence of coexisting magnesium deficiency and elevated catecholamines.