Myoclonus and urinary retention following subarachnoid morphine injection in a dog

Authors: Kona-Boun, Jean-Jacques; Pibarot, Philippe; Quesnel, Andrée
Abstract: A 5-year-old German Shepherd dog which presented for total hip replacement developed myoclonus and urinary retention after the subarachnoid injection of preservative-free morphine. Myoclonus was resis- tant to treatment, except pentobarbital anesthesia. Urinary retention was treated with bethanechol and subsided within a few days. Involuntary muscular activity can result from the epidural, subarachnoid or systemic injection of various opioid drugs, or as a result of the toxic or irritant e¡ect of preservatives or autologous blood.The latter were not causative factors in this case. Opioid agonist inhibition of central inhi- bitory neurotransmitter action may have explained the myoclonus. Postoperative urinary retention was attributed to the spinal action of morphine inhibiting e¡erent parasympathetic nervous activity. Keywords dog, epidural, myoclonus, opioids, subarachnoid, urinary retention.
Document Type: Article de recherche
Issue Date: 1 October 2003
Open Access Date: Restricted access
Document version: VoR
This document was published in: Veterinary anaesthesia and analgesia, Vol. 30, 257-264 (2003)
Association of Veterinary Anaesthetists
Alternative version: 10.1046/j.1467-2995.2003.00076.x
Collection:Articles publiés dans des revues avec comité de lecture

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