EXTRADURAL ANALGESIA IN LABOR - COMPLICATIONS OF 3 TECHNIQUES OF ADMINISTRATION

We have studied the complications associated with three techniques use d to maintain extradural analgesia in labour: midwife top-up doses of 0.25% bupivacaine 10 ml, continuous infusion of 0.125% bupivacaine 10 ml h(-1) and patient-controlled extradural analgesia (PCEA) with self- administered 3-ml bolus doses of 0.25% bupivacaine. A significantly hi gher intervention rate by an anaesthetist was required in the continuo us infusion group. There was no difference in the mode of delivery bet ween the three groups, although some women in the continuous infusion group had significantly denser motor block. There was a similar incide nce of rectal pressure, unilateral block and missed segments in the-th ree groups. Uneventful hypotension occurred in three women; two receiv ing PCEA and one receiving continuous infusion. Ten women experienced sensory blocks extending above T7 with no ill effects; seven receiving PCEA and three continuous infusion.