ACUTE PAIN CONTROL AND ACCELERATED POSTOPERATIVE SURGICAL RECOVERY

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The alleviation of postoperative pain is primarily provided for humanitarian reasons but also to reduce nociception-induced responses, which may adversely influence organ functioning and contribute to morbidity.14 As discussed in this issue, much progress has been made in our understanding of pain physiology and the effectiveness and side effects of various analgesics and techniques of administration. Based on this knowledge, optimal pain relief allowing normal function can usually be obtained following most surgical procedures, especially when using multimodal or balanced analgesia. This approach provides sufficient pain relief through additive or synergistic effects by different analgesics and with a concomitant reduction of side effects because of the requirement of lower doses of individual drugs and differences in side-effect profiles.13

In recent years, awareness of pain relief and pain education has been introduced in the surgical literature.15 The introduction of acute pain services has increased the quality of postoperative pain relief; however, further improvements in perioperative care and outcome require increased attention among surgeons to choices and availability of different analgesics and techniques in different operations because pain relief is a prerequisite to improved outcome.

This article provides an updated review of the differential effects of different analgesics on perioperative pathophysiologic responses and organ dysfunctions, hospital stay, and convalescence. Furthermore, updated knowledge is provided on the integration of postoperative pain relief in a multimodal approach to hasten recovery, based on recent reviews.16, 17

Section snippets

PAIN CONTROL AND THE SURGICAL STRESS RESPONSE

A common feature shared by all surgical patients is the widespread changes in several biologic cascade systems, including a predominance of catabolic hormones, activation of cytokines, complement, arachidonic acid metabolites, nitric oxide, and free oxygen radicals, all of which secondarily may lead to organ dysfunction and morbidity. Pain may obviously be considered as another neurophysiologic response to surgery but with its own secondary effects on biologic functions. Effective treatment of

PAIN CONTROL AND SURGICAL OUTCOME

Despite extensive data to demonstrate beneficial physiologic effects in specific organ dysfunctions and outcomes (Table 1) by efficient analgesia, the anesthetic and surgical literature has shown inconsistent results on overall postoperative morbidity.

THE MULTIMODAL APPROACH TO ACCELERATE POSTOPERATIVE RECOVERY

The pathogenesis to postoperative morbidity, need for hospitalization, and convalescence involves several factors (Fig. 1).16 Pain relief per se has not represented a major breakthrough to improve surgical outcome, as discussed earlier. Nevertheless, effective functional postoperative pain relief has a great potential to improve postoperative outcome, because pain-relieving techniques have beneficial physiologic effects on different organ systems in the postoperative period. To enhance progress

SUMMARY

Postoperative pain relief continues to demand our awareness, and surgeons should be fully aware of the potential physiologic benefits of effective dynamic pain relief regimens and the great potential to improve postoperative outcome if such analgesia is used for rehabilitation. To achieve advantageous effects, accelerated multimodal postoperative recovery programs should be developed as a multidisciplinary effort, with integration of postoperative pain management into a postoperative

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    Address reprint requests to Henrik Kehlet, MD, PhD, Department of Surgical Gastroenterology, Hvidovre University Hospital, University of Copenhagen, Kettegård Allé 30, 2650 Hvidovre, Denmark

    *

    From the Department of Surgical Gastroenterology, Hvidovre University Hospital, University of Copenhagen, Denmark

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