Abstract | BACKGROUND: Critical lower limb ischaemia has an annual incidence of 500-1000 per million and around a quarter will undergo a major lower limb amputation. Post operative pain and phantom pain are recognised complications. AIM: The aim of this study was to assess the role of postoperative intraneural infusion of local anaesthetic in patients under-going major lower limb amputation. METHODS: Between May 1998 and July 2001, following amputation patients either had standard post-operative analgesia or had an intra-neural infusion of 0.5% bupivicaine via an infant feeding catheter connected to a standard syringe pump (Alaris). This was a retrospective review and clinical notes of these patients were analysed to assess their post operative course, analgesic requirements and to ascertain phantom limb pain/sensation rates. All the data collected was from standard drug charts, case note entries and out-patient letters. RESULTS: During this time period 64 patients had a major lower limb amputation (31 patients treated routinely and 33 patients had an intra-neural anaesthetic (INA) catheter placed). In the INA group median post-operative opioid analgesia requirement was 10mg versus 74 mg (p=0.0002, Mann-Whitney U) and post-operative prescription of amitriptyline for phantom pain was less common (4 patients versus 11 patients; p=0.0281, Mann-Whitney U). There was no obvious increase in complications or significant adverse events. CONCLUSIONS: Postoperative intra-neural local anaesthetic infusion is a safe and effective technique. It reduces post-operative opioid analgesia requirement and seems to reduce phantom pain development.
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Authors | A J Grant, C Wood |
Journal | Scottish medical journal
(Scott Med J)
Vol. 53
Issue 1
Pg. 4-6
(Feb 2008)
ISSN: 0036-9330 [Print] Scotland |
PMID | 18422201
(Publication Type: Journal Article)
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Chemical References |
- Anesthetics, Local
- Bupivacaine
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Topics |
- Aged
- Amputation, Surgical
(adverse effects)
- Anesthesia, Local
- Anesthetics, Local
(administration & dosage)
- Bupivacaine
(administration & dosage)
- Cohort Studies
- Female
- Humans
- Infusions, Parenteral
- Leg
(innervation)
- Male
- Neuralgia
(drug therapy, etiology)
- Pain, Postoperative
(drug therapy, etiology)
- Retrospective Studies
- Treatment Outcome
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