Why should we care about controlling pain in the postoperative period? Better pain control, depending on the agent(s) and modalities used, leads to benefits in terms of cardiovascular and respiratory complications as well as endocrine, immunologic, gastrointestinal, and hematological outcomes (Liu 2007). Another reason is that patients are often more concerned about being in pain than they are about the primary reason for being in the hospital. In addition, the quality of recovery is improved, and acute pain may become chronic/persistent if not treated properly (Carr 1999).
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