Thoracic surgery via posterolateral thoracotomy causes significant postoperative pain. There are several methods of postoperative pain relief, including intravenous analgesics and local-regional analgesia techniques. Although thoracic epidural remains the gold standard, it is not without complications, which are rare but serious, and should be reserved for trained teams or patients with high morbidity. Intrapleural analgesia is a simple method, performed by the surgeon intraoperatively. Its effectiveness is controversial and the results remain inconsistent. Ropivacaine is a recently marketed local anesthetic with a modest vasoconstrictive effect. The variation in plasma levels of ropivacaine obtained by this technique has not yet been evaluated. The purposes of this study are: 1. To determine the efficacy of inter pleural analgesia 2. To determine the plasmatic concentration of ropivacaine by inter pleural road
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Proportion of Patients With Major Post-operative Pain at Mobilization Following Lung Surgery by Posterolateral Thoracotomy
Timeframe: Between surgery and up to 48 hours