RT Book, Section A1 Sween, Lindsay K. A2 Hess, Philip E. A2 Li, Yunping A2 Kowalczyk, John J. A2 Stiles, Justin K. SR Print(0) ID 1199674050 T1 Intravenous Analgesia T2 Obstetric Anesthesia: Quick References & Practical Guides YR 2023 FD 2023 PB McGraw Hill PP New York, NY SN 9781264671465 LK obgyn.mhmedical.com/content.aspx?aid=1199674050 RD 2024/11/07 AB Intravenous patient-controlled analgesia (PCA) with fentanyl or remifentanil is an option for labor analgesia in patients for whom neuraxial anesthesia is contraindicated (e.g., platelet disorders, coagulopathy, or patient’s refusal).1 Both remifentanil and fentanyl PCA have significantly lower visual analog scale pain scores 1 hour after treatment initiation compared to baseline, with pain score reduction being significantly greater with remifentanil compared to fentanyl.1,2 Patients’ pain scores with fentanyl and remifentanil PCA return to baseline by 3 hours after treatment initiation, likely reflecting increased pain levels with advancing labor.1