Addition of epinephrine to epidural bupivacaine infusions following initiation of labor analgesia with epidural fentanyl

Abstract Study Objective To evaluate the analgesic effects of the addition of epinephrine to a bupivacaine epidural infusion in early labor after a fentanyl bolus, following a lidocaine-epinephrine test dose. Design Randomized, double-blinded study. Setting Labor suite of a tertiary care hospital. P...

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Veröffentlicht in:Journal of clinical anesthesia 2011-06, Vol.23 (4), p.265-269
Hauptverfasser: Connelly, Neil Roy, MD, Freiman, Jorge P., MD, Lucas, Tanya, MD, Parker, Robert K., DO, Raghunathan, Karthik, MD, Gibson, Charles, RN, MA, Katz, Brennan, DO, Iwashita, Chad, MD
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Sprache:eng
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Zusammenfassung:Abstract Study Objective To evaluate the analgesic effects of the addition of epinephrine to a bupivacaine epidural infusion in early labor after a fentanyl bolus, following a lidocaine-epinephrine test dose. Design Randomized, double-blinded study. Setting Labor suite of a tertiary care hospital. Patients 60 ASA physical status 1 and 2, laboring, nulliparous women. Interventions All laboring women received a 3 mL epidural test dose of 1.5% lidocaine with 1:200,000 epinephrine, followed by a fentanyl 100 μg bolus in 10 mL of diluent volume. Patients were randomized to receive one of two continuous epidural infusions: bupivacaine 0.625 mg/mL at 10 mL/hr (control group) or bupivacaine 0.625 mg/mL with epinephrine 5 μg/mL at 10 mL/hr (epinephrine group). Measurements Time to re-dose, pain scores, and side effects were recorded. Main Results The mean duration of satisfactory analgesia prior to re-dose was 159 ± 62 min for the control group and 221 ± 111 min for the epinephrine group ( P < 0.02). Pain scores were significantly higher in the control group than the epinephrine group at two time periods: 2.5 hours and 4.5 hours ( P < 0.04). Conclusions The administration of 0.625 mg/mL bupivacaine with epinephrine 5 μg/mL at 10 mL/hr, compared with plain 0.625 mg/mL bupivacaine at 10 mL/hr, provided a longer time to re-dose, decreased pain scores at two time intervals, and had no significant difference in duration of labor or side effects.
ISSN:0952-8180
1873-4529
DOI:10.1016/j.jclinane.2010.09.005