• C Castillo-Zamora, M del Carmen Lespron, and A A Nava-Ocampo.
• Department of Anesthesia, Hospital Infantil de México Federico Gómez, Secretaría de Salud, Mexico. caszam2002@yahoo.com.mx
• Minerva Anestesiol. 2005 Dec 1;71(12):769-73.

AimRocuronium may be a good alternative to pancuronium in cardiac surgical patients. We evaluate the hemodynamic response to rocuronium and pancuronium administered to cardiac surgical patients.MethodsA single-blind, randomized clinical trial was carried out at the National Institute of Cardiology in Mexico. Twenty-two patients older than 18 years, NYHA class III-IV, and scheduled to undergo an elective cardiovascular surgical procedure were enrolled. Patients were randomly allocated to receive an i.v. bolus dose of either pancuronium 100 microg/kg or rocuronium 600 microg/kg. Peripheral arterial (radial) and venous cannulations and insertion of a multi-lumen pulmonary artery flotation catheter through the right internal jugular vein were carried out under local anesthesia. Anesthetic induction with an i.v. bolus dose of fentanyl 700 microg and diazepam 20 mg was performed and thereafter the neuromuscular blocking agent was administered. Ventilation with O2 100% was performed until a TOF < or =5% was observed and tracheal intubation was performed. After intubation, patients were maintained with O2 10 mL/kg administered by means of a pulmonary ventilator at a pressure of 20-25 cm H2O. The basal, pre-laryngoscopy, post-intubation, and pre-operative recording of a set of cardiovascular parameters were obtained.ResultsNo differences (P>0.05) in the hemodynamic response were observed between pancuronium and rocuronium nor during the different evaluation times in each group.ConclusionsRocuronium can be a safe alternative to pancuronium for patients requiring cardiac surgical procedures.

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