Anesthesiology
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Randomized Controlled Trial Comparative Study
Low-dose intravenous ketamine potentiates epidural analgesia after thoracotomy.
Ketamine potentiates intravenous or epidural morphine analgesia. The authors hypothesized that very-low-dose ketamine infusion reduces acute and long-term postthoracotomy pain. ⋯ Very-low-dose ketamine (0.05 mg . kg(-1) . h(-1)) potentiated morphine-ropivacaine analgesia and reduced postthoracotomy pain.