Canadian Journal of Anaesthesia

, Volume 36, Issue 6, pp 697–700 | Cite as

Computerized axial tomo-epidurographic and radiographic documentation of unilateral epidural analgesia

  • Andre P. Boezaart
Clinical Reports


A 23-year-old primigravid patient who received epidural analgesia for pain of labour presented with persistent, apparently irremediable, unilateral analgesia. Computerized axial tomo-epidurography demonstrated absence of circumferential spread due to lateral placement of the catheter. Transforaminal escape of contrast medium into the paravertebral area had occurred and anterior and posterior midline partitioning of the epidural space was obvious. All the usual measures to the promote contralateral analgesia, except reinsertion of the catheter, had been tried without success.

Key words

Anaesthesia: obstetrical Anaesthetic Techniques: epidural Complications: unilateral block Measurement Techniques: computerized tomography, epidurography 


Une primipare de 23 ans ayant reçu une analgésie par voie épidurale lors de l’accouchement a accusé une analgésie unilatérale persistanle et irrémédiable. Une tomoepidurographie axiale “computarisée” a démontré que l’absence d’extension circonferentielle de l’analgésie était due à une localisation latérale du cathéter, Une fuite du produit de contraste à travers le foramen vers la région paravertebrale est survenue expliquant la partition de l’espace épidural. Toutes les mesures habituelles pour remedier a cette situation furent essayees sans succes a l’exception de la ré-insertion du cathéter.


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Copyright information

© Canadian Anesthesiologists 1989

Authors and Affiliations

  • Andre P. Boezaart
    • 1
  1. 1.Department of AnaesthesiaUniversity of the Witwatersrand, Johannesburg HospitalJohannesburgRepublic of South Africa

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