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

IntroductionThis study was conducted to compare the effectiveness subarachnoid anaesthesia with bupivacaine plus fentanyl at different concentrations of dextrose for caesarean section. MethodsA double-blind, randomised study, which included 60 patients, aged between 18 and 40 years, ASA I-II for caesarean section class 3 or 4, divided into 3 groups, designated A, B, and C corresponding to dextrose 2, 4 and 6%, respectively, bupivacaine 6.25 mg plus fentanyl 25 μg. Demographic characteristics were quantified, episodes of hypotension and bradycardia onset and duration of sensory block and motor block, surgeon and maternal satisfaction, adverse events and the effect of anaesthesia on the foetus and neonate. A p < .05 was considered statistically significant. ResultsThere was no difference in the demographic data, the three-anaesthetic mixture with dextrose were sufficient to provide level and duration of anesthesia for surgery. Maternal hypotension events were lower in group C (p < 0.05), the same group had lower external malleolus deep sensitivity (p < 0.05), only 5 cases were consistent with neonatal asphyxia, however the Apgar scores values were greater than 7 points, with satisfactory development. ConclusionsThe three anaesthetic mixtures for subarachnoid anaesthesia with bupivacaine-fentanyl are clinically effective; however, the greater the amount of dextrose used the better block quality.