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The Effect of Painless Delivery with Intrathecal Sufentanil on Labor Progress and Neonatal Outcomes: A Single Center Study on Pregnant Women

Background: Delivery pain is the most unbearable pain and can be relieved with intrathecal opioids. This study aimed to investigate the effect of intrathecal sufentanil for painless delivery on labor progress and neonatal outcomes in pregnant women. Methods: This was a single-arm observational cohort study on 1055 pregnant women candidates for vaginal delivery with spinal analgesia referred to the Akbarabadi Hospital. First, 0.1 µg/kg of intrathecal sufentanil was used, and maternal blood pressure and maternal and fetal heart rates were recorded after analgesia. During delivery, the mothers were monitored for nausea, pruritus, motor block, apnea, urinary retention, or the possibility of an emergency cesarean section. The duration of the analgesia, the duration of the second stages of labor, and the mother's pain scores were recorded based on the Visual Analogue Scale (VAS). 1- and 5-minute Apgar scores and Arterial Blood Gas (ABG) of the umbilical cord were also recorded. Results: The most common station was -3 for 723 women, followed by -2 for 229 women. Fifty-two women underwent cesarean section, and fetal distress was the most common reason for cesarean section (57.7%). The mean time for initiating analgesia was 5.93 ± 2.87 minutes, and the mean visual analog scale was 1.08 ± 0.16. The mean Apgar was 9.0 ± 0.47; the mean weight at birth was 2917.39 ± 449.90 gr; PH was 7.31 ± 2.03; HCO3 was 22.67 ± 3.08mEq/liter, and PaCo2 was 43.36 ± 7.06 mmHg. Regarding complications, the patients just developed itching (n = 78), and hypotension, bradycardia, apnea, and decreased consciousness were overlooked. Conclusions: Intrathecal sufentanil is safe and efficient in painless delivery, resulting in normal Apgar and normal PH with no specific side-effect.