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Title: PCA ketamine and morphine after abdominal hysterectomy.
Authors: Burstal R
Danjoux G
Hayes C 
Lantry G
Keywords: analgesia, patient-controlled
central nervous system sensitization
patient satisfaction
Anaesthesia, general
Issue Date: Jun-2001
Source: 29(3):246-51
Journal Title: Anaesthesia and intensive care
Abstract: Following a standardized general anaesthetic for total abdominal hysterectomy, patients received either patient controlled analgesia (PCA) with morphine 1 mg/ml (group M, n = 33) or morphine 1 mg/ml plus ketamine 2 mg/ml (group K, n = 37) for 48 hours in a randomized, double-blind fashion. In 43 women the area of allodynia around the scar was mapped as a measure of the degree of central sensitization. A significant reduction in the area of allodynia was found in those receiving ketamine with morphine (42 cm2 [interquartile range (IQR) 57] compared with 57 cm2 [IQR 82] z = -2.0, P = 0.04) in those receiving morphine alone. There were no significant differences between the two groups with respect to age, or weight, or between the subgroups within which the area of allodynia was measured with respect to length of incision. No significant differences were found between the groups with respect to pain scores, total or hourly drug consumption, patient satisfaction, nausea scores or antiemetic use. Patients in group K were more likely to require PCA for a shorter period than those in group M (median 40 hours, IQR 26 versus 48 hours IQR 7). Ten patients in group K were withdrawn because of side-effects (dysphoria n = 4, nausea n = 2, pruritus n = 4) compared with one in group M (nausea n = 1) (P = 0.006). The potential usefulness of ketamine after hysterectomy was offset by a high incidence of adverse effects and a lack of opioid-sparing effects, such that combined intravenous ketamine and morphine PCA as used in this study cannot be recommended for routine care.
PubMed URL:
Type: Journal Article
Study/Trial: Clinical Trial
Appears in Collections:Scholarly and Clinical

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