• Anesthesia and analgesia · Jan 2001

    Randomized Controlled Trial Clinical Trial

    The dose-range effects of sufentanil added to 0.125% bupivacaine on the quality of patient-controlled epidural analgesia during labor.

    • J M Bernard, D Le Roux, A Barthe, O Jourdain, L Vizquel, and C Michel.
    • Département d'Anesthésie-Réanimation, Polyclinique Jean-Villar, Bruges-Bordeaux, France. jmbmdphd@club-internet.fr
    • Anesth. Analg. 2001 Jan 1;92(1):184-8.

    UnlabelledTo determine the minimal sufentanil concentration required to improve the quality of patient-controlled epidural analgesia during labor, we compared the efficacy of a combination of 0.125% bupivacaine with 1:800,000 epinephrine and different concentrations of sufentanil in a double-blinded randomized study. Concentrations were no sufentanil (n = 66), 0.078 microg/mL sufentanil (n = 65), 0.156 microg/mL sufentanil (n = 65), 0.312 microg/mL sufentanil (n = 65), and 0.468 microg/mL sufentanil (n = 67). The patient-controlled epidural analgesia setting was a 12-mL bolus dose and a 25-min lockout interval. Pain was scored at 5-6 cm, 7-8 cm, and full cervical dilation by using a 10-cm visual analog scale. At full cervical dilation, the pain scores were lower in the groups receiving a solution of at least 0.156 microg/mL sufentanil. Few differences were observed when using the larger concentrations, except for increased pruritus intensity. The duration of labor and the mode of delivery were similar in each group. Rescue analgesia, which consisted of 6 mL of 0.25% bupivacaine, was infrequent and comparable between groups. The use of the pump did not differ between groups. Adding a small concentration of sufentanil to 0.125% bupivacaine for patient-controlled epidural analgesia during labor improved the quality of analgesia but did not modify the bupivacaine requirement. Reducing the sufentanil concentrations to 0.156 microg/mL decreased the pruritus intensity without reducing analgesia.ImplicationsAdding a small concentration of sufentanil to 0.125% bupivacaine for patient-controlled epidural analgesia during labor improved the quality of analgesia but did not modify the bupivacaine requirement. Reducing the sufentanil concentrations to 0.156 microg/mL decreased the pruritus intensity without reducing analgesia.

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