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European Journal of Cardio-Thoracic Surgery, Vol 8, 482-486, Copyright © 1994 by European Association for Cardio-thoracic Surgery

ARTICLES

Comparison of epidural analgesia and cryoanalgesia in thoracic surgery

PY Brichon, C Pison, P Chaffanjon, P Fayot, M Buchberger, L Neron, A Bocca, J Verdier and R Sarrazin
Department of Thoracic Surgery, Hopital A. Michallon, La Tronche, France.

A prospective study was carried out in 120 patients undergoing elective thoracotomy for parenchymal disease. Patients were randomized into three groups: A (control group), B (epidural analgesia), C (freezing of intercostal nerves). Subjective pain relief was assessed on a linear visual analog scale. Analgesic requirements were evaluated during the 12 days following surgery, or until discharge if earlier. The vital capacity (VC) and forced expiratory volume in 1 s (FEV1) were measured on the day before operation and on the 1st, 2nd, 3rd and 7th postoperative days (POD). Subjective pain relief was significantly better in Group B in comparison with Group A (P < 0.05) or C (P < 0.05). Group C had the lowest score on the 11th and 12th POD but differences were not statistically significant. Requirements for intravenous analgesics were lower in Group B than in the control group (P < 0.05) during the first 3 POD, and in group C than in the control group the day of operation (P < 0.05). Oral analgesic requirements, when compared with controls, were lower in group B during the first 5 POD, and lower in group C on the 3rd and the 4th POD (P < 0.05). Cryoanalgesia led to a slight but not significant increase in VC and FEV1. Epidural analgesia led to a significant increase when compared with controls in FEV1 during the first 3 POD, and in FVC on the 7th POD (P < 0.05). It is concluded that epidural analgesia led to the best pain relief and restoration of pulmonary function after thoracotomy.(ABSTRACT TRUNCATED AT 250 WORDS)

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