British Journal of Anaesthesia, 1971, Vol. 43, No. 12 1172-1174
© 1971 The Board of Management and Trustees of the British Journal of Anaesthesia
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THE OCCURRENCE OF UNBLOCKED SEGMENTS DURING CONTINUOUS LUMBAR EPIDURAL ANALGESIA FOR PAIN RELIEF IN LABOUR
Anaesthetic Department, The New Maternity Hospital Birmingham, England
The records of a consecutive series of 920 cases of continuous lumbar epidural analgesia for the control of pain in labour were examined to ascertain the incidence of unilateral block and unblocked segments. An unblocked segment was noted to have occurred in 6.7 per cent of patients and was persistent in 1.5 per cent of patients. Unilateral block occurred in 1.5 per cent of patients, being persistent in 0.54 per cent.
Present address: Anaesthetic Department, East Birmingham Hospital, Birmingham 9, England.