Intrathecal sufentanil for labor analgesia in parturients / 中华麻醉学杂志

ABSTRACT

Objective To compare the safety and efficacy of different doses of intrathecal sufentanil for labor analgesia in parturients. Methods One-hundred ASA I or II nulliparous parturients at 39-40 weeks of gestation who requested labor analgesia were included in this randomized double-blinded study. They were all in active labor with a 2-3 cm cervical dilatation. The subarachnoid block was performed at L2, 3 . The patients were randomized to received intrathecal sufentanil 1,3,5,7,or 10 ?g. An epidural cather was then placed for patient-controlled epidural analgesia (PCEA) . The PCEA solution contained 0.1% ropivacaine and sufentanil 0.4 ?g ? kg-1 .The PCEA settings were as follows background infusion 5 ml?h-1 , demand bolus 3 ml and lock-time interval 10min. Pain relief was assessed by VAS scores, oxytocin dose, maternal satisfaction, hemodynamics and side effects. Apgar scores of the new-borns were recorded. Results Demographic data including age, sex, body weight and baseline VAS were similar among the five dose groups. There were significant differences in the onset , duration and efficacy of analgesia among the five dose groups. Significantly more patients who received 10 ?g sufentanil reported nausea and vomiting and pruritus than those who received 1 or 3 fig sufentanil. There was no significant difference in Apgar scores among the 5 dose groups. Conclusion Intrathecal sufentanil combined with PECA is safe and effective for labor analgesia. Intrathecal sufentanil 3-5 ?g is the dose of choice for labor pain relief.