Effects of clonidine associated to hyperbaric bupivacaine during high-level spinal anesthesia.

Background And Objectives: Published data suggest that clonidine, an alpha2-adrenergic agonist, in association with bupivacaine, may increase the incidence of intraoperative hypotension and bradycardia during high-level spinal anesthesia. This study aimed at determining the synergistic potential of two clonidine doses (45 and 75 microg) and hyperbaric bupivacaine on characteristics and hemodynamic effects of high-level (T4) spinal anesthesia.

Methods: Participated in this randomized double-blind study, 60 ASA I patients scheduled for lower abdominal and limb surgery.

[Unexpected cardiac arrest during cholecystectomy: case report.].

Background And Objectives: Intraoperative cardiac arrest is a severe event and its incidence in our hospital is 31:10000 anesthesias. This report aimed at presenting a case of cardiac arrest during general anesthesia in a patient submitted to cholecystectomy.

Case Report: Female patient, 16 years old, 62 kg, physical status ASA I, submitted to cholecystectomy.

Onset time and duration of rocuronium, atracurium and mivacurium in pediatric patients.

Background And Objectives: Neuromuscular blockers (NMB) are widely used in pediatric anesthesia, but there is no ideal NMB. This study aimed at evaluating onset and recovery time, hemodynamic changes and tracheal intubation conditions of rocuronium, atracurium and mivacurium in pediatric patients.

Methods: Participated in this study 67 children aged 30 months to 12 years, physical status ASA I and II, who were allocated into three groups: G1 = 0.