Pain medicine : the official journal of the American Academy of Pain Medicine
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Letter Randomized Controlled Trial
Intraperitoneal bupivacaine for postoperative pain relief after laparoscopic cholecystectomy.
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Randomized Controlled Trial Comparative Study
Postoperative pain significantly influences postoperative blood loss in patients undergoing total knee replacement.
Although hypertension has long been recognized as a factor that might increase intraoperative blood losses in major orthopedic surgery, the effects of postoperative pain-induced hypertension on blood losses have not so far been evaluated. The aim of this study was to evaluate the effect of pain on perioperative blood losses of patients undergoing primary total knee replacement (TKR). ⋯ In patients undergoing TKR, there is a significant correlation between measured blood loss and morphine consumption from 12 to 18 hours. It is concluded that postoperative pain significantly influences postoperative blood loss in patients undergoing TKR.