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Thai) 1:
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Although acute pain and associated responses can be unpleasant and often debilitating, theyserve important adaptive purposes. They identify and localize noxious stimuli, initiatewithdrawal responses that limit tissue injury, inhibit mobility thereby enhancing woundhealing1. Nevertheless, intense and prolonged pain transmission2, as well as analgesicundermedication, can increase surgical postsurgical / traumatic morbidity, delay recovery,and lead to development of chronic pain. Despite the obviously simple nature of surgicalincision, however, perioperative and specifically postoperative pain remain underevaluatedand poorly treated. Recent surveys suggest that 80% of patients experience pain aftersurgery3, 11% having severe pain, and that pain delays recovery in 24% of patientsundergoing ambulatory surgery4.
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