Abstract
ABSTRACT Background and aim The anesthetic management of premature neonates has many challenges resulting from immature physiological adaptations, the transitional circulation, increased presence of comorbidities and, prominently, the occurrence of apnea in preterm infants. The aim of the present study was to compare the efficacy and safety of levobupivacaine with hyperbaric bupivacaine for spinal anesthesia in preterm infants scheduled for inguinal hernia repair. Methods A double-blinded randomized, prospective, controlled study was conducted in a tertiary care pediatric surgery center from January 2017 to February 2021 where 60 preterm infants aged <45 weeks post-menstrual age (PMA) were scheduled for an elective inguinal hernia repair procedure. Preterm infants comforted by a sugared pacifier were divided randomly into two groups (30 infants each). Group I received spinal anesthesia with 1 mg/kg 0.5% hyperbaric bupivacaine, while group II received spinal anesthesia with1mg/kg o.5% levo-bupivacaine. The primary objective was to assess the hemodynamic stability, sensory and motor blockade of intrathecal levo-bupivacaine compared to hyperbaric bupivacaine in premature infants, and secondarily was to monitor the incidence of postoperative apnea, length of stay (LOS), and need for postoperative ventilator support. Results The onset of sensory block of spinal anesthesia in group II was statistically significantly faster than in group I (Group I = 2.6 ± 0.52 min, Group II = 2.3 ± 0.35 min, p = 0.0112), with a statistically significant rapid regression in group II compared to group I (group I = 86 ± 2.45 min, Group II = 84 ± 3.67 min, p = 0.016). Conclusions Levo-bupivacaine is an effective and safe agent for spinal anesthesia and has an equivalent potency to hyperbaric bupivacaine for motor blockade in premature infants requiring inguinal hernia repair surgery.
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