RESUMEN
BACKGROUND: This study was designed to compare the efficacy of an ephedrine intramuscular injection with crystalloid or colloid administration for the prevention of cardiovascular change during spinal anesthesia undergoing Transurethral Resection of Prostate (TURP). METHODS: Eighty ASA I-II patients scheduled for TURP under spinal anesthesia were randomly allocated to receive non of the vasopressors or fluids (control group), 40 mg of i.m. ephedrine (ephedrine group), 15 ml/kg of i.v. lactated Ringer'solution (crystalloid group), and 8 ml/kg of i.v. pentastarch(colloid group). 12 mg of 0.5% hyperbaric tetracaine was injected through a 24 gauge Quinke needle at the L4-5 interspace in all patients. All patients were placed in the supine position and blood pressure (BP) and heart rate were recorded at 1-min intervals for 10 min, 2-min intervals for the next 10 min and subsequently at 5-min intervals. The sensory level was determined by pin prick test using 27 gauge needle. RESULTS: In the ephedrine group, systolic blood pressure was significantly greater than the other groups between 1 and 40 min after spinal anesthesia. (p<0.05) The changes in diastolic BP, mean BP and heart rate in the all groups were similar. CONCLUSION: The result of intramuscular injection of ephedrine may be more effective than crystalloid or colloid adminstration for the prophylaxis of hypotension during spinal anesthesia undergoing TURP.
Asunto(s)
Humanos , Anestesia Raquidea , Presión Sanguínea , Coloides , Efedrina , Frecuencia Cardíaca , Hipotensión , Inyecciones Intramusculares , Agujas , Posición Supina , Tetracaína , Resección Transuretral de la PróstataRESUMEN
BACKGROUND: This study was designed to compare the efficacy of an ephedrine intramuscular injection with crystalloid or colloid administration for the prevention of cardiovascular change during spinal anesthesia undergoing Transurethral Resection of Prostate (TURP). METHODS: Eighty ASA I-II patients scheduled for TURP under spinal anesthesia were randomly allocated to receive non of the vasopressors or fluids (control group), 40 mg of i.m. ephedrine (ephedrine group), 15 ml/kg of i.v. lactated Ringer'solution (crystalloid group), and 8 ml/kg of i.v. pentastarch(colloid group). 12 mg of 0.5% hyperbaric tetracaine was injected through a 24 gauge Quinke needle at the L4-5 interspace in all patients. All patients were placed in the supine position and blood pressure (BP) and heart rate were recorded at 1-min intervals for 10 min, 2-min intervals for the next 10 min and subsequently at 5-min intervals. The sensory level was determined by pin prick test using 27 gauge needle. RESULTS: In the ephedrine group, systolic blood pressure was significantly greater than the other groups between 1 and 40 min after spinal anesthesia. (p<0.05) The changes in diastolic BP, mean BP and heart rate in the all groups were similar. CONCLUSION: The result of intramuscular injection of ephedrine may be more effective than crystalloid or colloid adminstration for the prophylaxis of hypotension during spinal anesthesia undergoing TURP.
Asunto(s)
Humanos , Anestesia Raquidea , Presión Sanguínea , Coloides , Efedrina , Frecuencia Cardíaca , Hipotensión , Inyecciones Intramusculares , Agujas , Posición Supina , Tetracaína , Resección Transuretral de la PróstataRESUMEN
BACKGROUND: Postoperative myalgia after administration of succinylcholine is a frequent complication after surgery. This study was designed to determine whether there was any association between postoperative myalgia and muscle relaxants. METHODS: Sixty patients were assigned to three groups of equal size. Group 1, the patients received succinylcholine, 1.0 mg/kg for tracheal intubation. Group 2, received pancuronium 0.01 mg/kg, 4 minutes before administration of succinylcholine 1.5 mg/kg. Group 3, received pancuronium 0.01 mg/kg, 4 minutes before administration of pancuronium 0.09 mg/kg. Blood samples for determination of serum potassium concentration were taken before the induction of anesthesia and 3 minutes after tracheal intubation. The incidence and severity of muscle fasciculation and myalgia were assessed in a double-blind manner. RESULTS: Serum potassium concentration was significantly increased in group 1. In group 2, incidence and severity of muscle fasciculation were significantly less than groups 1. Postoperative myalgia was significantly less in group 3 when compared with group 1 and 2. CONCLUSIONS: There was no significant correlation between succinylcholine induced fasciculation and postoperative myalgia. Pretreatment with pancuronium decreased the incidence of fasciculation and the changes of serum potassium concentration by succinylcholine, but has little effects on the succinylcholine induced postoperative myalgia.