A comparative study on the effects of intrathecal morphine added to levobupivacaine for spinal anesthesia

Authors

  • Hakki Unlugenc, MD
  • Murat Gunduz, MD
  • Baris Guzel, MD
  • Geylan Isik, MD

DOI:

https://doi.org/10.5055/jom.2012.0103

Keywords:

combined spinal-epidural anesthesia, cesarean section, morphine, levobupivacaine

Abstract

Objective: In this prospective, randomized, double-blind, controlled study, we investigated the sensory, motor, and analgesic block characteristics of two different doses of morphine compared with saline when added to 0.5 percent levobupivacaine.
Design: Prospective, randomized, double-blinded, controlled study.
Setting: University hospital.
Patients, Participants, Interventions: One hundred and twelve ASA I or II adult patients undergoing cesarean section with combined-spinal epidural anesthesia (CSEA) were randomly allocated to receive 0.5 mL of 0.9 percent sodium chloride in group S, 0.1 mg of morphine in group M1, or 0.2 mg of morphine in group M2 following 15 mg of isobaric spinal levobupivacaine 0.5 percent (3 mL).
Main Outcome Measure(s): We recorded the following: onset and duration of sensory and motor block, duration of spinal anesthesia, time to first request for analgesia, and side effects.
Results: The onset time of sensory block was significantly less in group M2 (3.5 ± 3 minutes) than S (4 ± 3 minutes; p < 0.003). Parturients given morphine had a significantly greater duration of analgesia (554 ± 350 minutes in group M1 and 879 ± 725 minutes in group M2) than the saline group (80 ± 70 minutes; p < 0.001). Similarly, the time to first request for analgesia was longer in groups M1 (582 ± 470 minutes) and M2 (917 ± 709 minutes) than in group S (92 ± 77 minutes; p < 0.001).
Conclusion: In patients undergoing cesarean delivery with CSEA, adding intrathecal morphine (0.1 and 0.2 mg) to 15 mg of spinal levobupivacaine prolonged the duration of spinal analgesia and provided rapid onset of action and longer time to first analgesic request without causing any significant side effect compared to saline.

Author Biographies

Hakki Unlugenc, MD

Department of Anaesthesiology, Cukurova University Faculty of Medicine, Adana, Turkey.

Murat Gunduz, MD

Department of Anaesthesiology, Cukurova University Faculty of Medicine, Adana, Turkey.

Baris Guzel, MD

Department of Obstetric & Gynecology, Cukurova University Faculty of Medicine, Adana, Turkey.

Geylan Isik, MD

Department of Anaesthesiology, Cukurova University Faculty of Medicine, Adana, Turkey.

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Published

03/01/2012

How to Cite

Unlugenc, MD, H., M. Gunduz, MD, B. Guzel, MD, and G. Isik, MD. “A Comparative Study on the Effects of Intrathecal Morphine Added to Levobupivacaine for Spinal Anesthesia”. Journal of Opioid Management, vol. 8, no. 2, Mar. 2012, pp. 105-13, doi:10.5055/jom.2012.0103.

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