• Br J Anaesth · May 2011

    Randomized Controlled Trial Comparative Study

    Comparison of transversus abdominis plane block vs spinal morphine for pain relief after Caesarean section.

    • R C N McMorrow, R J Ni Mhuircheartaigh, K A Ahmed, A Aslani, S-C Ng, I Conrick-Martin, J J Dowling, A Gaffney, J P R Loughrey, and C L McCaul.
    • Department of Anesthesia, Rotunda Hospital, Parnell Square, Dublin 1, Ireland.
    • Br J Anaesth. 2011 May 1;106(5):706-12.

    BackgroundTransversus abdominis plane (TAP) block is an alternative to spinal morphine for analgesia after Caesarean section but there are few data on its comparative efficacy. We compared the analgesic efficacy of the TAP block with and without spinal morphine after Caesarean section in a prospective, randomized, double-blinded placebo-controlled trial.MethodsEighty patients were randomized to one of four groups to receive (in addition to spinal anaesthesia) either spinal morphine 100 µg (S(M)) or saline (S(S)) and a postoperative bilateral TAP block with either bupivacaine (T(LA)) 2 mg kg(-1) or saline (T(S)).ResultsPain on movement and early morphine consumption were lowest in groups receiving spinal morphine and was not improved by TAP block. The rank order of median pain scores on movement at 6 h was: S(M)T(LA) (20 mm)ConclusionsSpinal morphine-but not TAP block-improved analgesia after Caesarean section. The addition of TAP block with bupivacaine 2 mg kg(-1) to spinal morphine did not further improve analgesia.

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