Variación de la baricidad en la mezcla de anestesia espinal para cesárea, ¿tiene algún efecto en la calidad anestésica? Estudio aleatorizado, doble ciego, controlado.

Abstract

Introduction: This study was conducted to compare the effectiveness subarachnoid anaesthesiawith bupivacaine plus fentanyl at different concentrations of dextrose for caesarean section. Methods: A double-blind, randomised study, which included 60 patients, aged between 18 and40 years, ASA I-II for caesarean section class 3 or 4, divided into 3 groups, designated A, B, andC corresponding to dextrose 2, 4 and 6%, respectively, bupivacaine 6.25 mg plus fentanyl 25 microgr. Demographic characteristics were quantified, episodes of hypotension and bradycardia onsetand duration of sensory block and motor block, surgeon and maternal satisfaction, adverseevents and the effect of anaesthesia on the foetus and neonate. A p < .05 was consideredstatistically significant. Results: There was no difference in the demographic data, the three-anaesthetic mixture withdextrose were sufficient to provide level and duration of anesthesia for surgery. Maternal hypo-tension events were lower in group C (p < 0.05), the same group had lower external malleolusdeep sensitivity (p < 0.05), only 5 cases were consistent with neonatal asphyxia, however theApgar scores values were greater than 7 points, with satisfactory development. Conclusions: The three anaesthetic mixtures for subarachnoid anaesthesia with bupivacaine-fentanyl are clinically effective; however, the greater the amount of dextrose used the betterblock quality.