Pain management
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Quantitative sensory testing (QST), a set of noninvasive methods used to assess sensory and pain perception, has been used for three decades. The precision of the instruments and the uninvasiveness encouraged many QST-based trials. The developments made have benefited multiple disciplines. ⋯ The sensory pathway cannot be assessed in isolation from the affective and cognitive characteristics of patients or testers. Many variables potentially affect the reliability and reproducibility of QST, which after all, is designed for the testing of individuals by other individuals. Several decades of QST research have yielded exciting contributions, but the future of QST cannot be fully known.
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Epidural steroid injections (ESIs), which can provide significant but temporary pain relief in well-selected patients, are the most commonly performed procedure in pain management. The anatomy of the epidural space provides a framework for understanding risks associated with ESIs, a topic relevant to both patients and physicians in interventional pain, surgery and primary care. ⋯ Although major complications associated with ESI occur rarely, potentially catastrophic events resulting from infectious, hematologic and neurologic morbidity may lead to permanent injury. The safety profile of ESIs may improve with development and dissemination of sound injection technique, safer compounds manufactured in a sterile manner and deficient of thromboembolic potential and the application of existing technology.
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The sufentanil sublingual tablet system (SSTS) is a novel patient-controlled analgesia (PCA) system that is pending approval from the US FDA for the management of moderate to severe acute pain in hospitalized patients. SSTS offers a noninvasive alternative to intravenous (iv.) PCA and optimized on-demand analgesia with the rapid onset and titratibility of sublingual sufentanil. Phase III clinical trials have demonstrated that SSTS has greater efficacy for the treatment of pain during the 72-h postoperative period after open abdominal and major orthopedic (total knee or total hip arthroplasty) surgery compared with iv. ⋯ Safety assessments indicate that adverse events are typical for postoperative patients taking opioid analgesics. While the frequency of adverse events is comparable between patients using SSTS and iv. PCA MS, the incidence of oxygen desaturation is lower in those using SSTS.
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Review
Obstructive sleep apnea in adult patients: considerations for anesthesia and acute pain management.
Obstructive sleep apnea (OSA) represents a challenge in the perioperative period for both physicians and the health care system alike. A number of studies have associated OSA with increased risk for postoperative complications. ⋯ Other interventions such as the use neuraxial/regional anesthesia may however offer added benefit. This review aims to address considerations for physicians in charge of OSA patients in the perioperative setting and to give an outlook for current and future research on this topic.
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Chronic postsurgical pain (CPSP) may develop after any surgical procedure, and is a common feature after abdominal and pelvic surgery with a prevalence varying between 10 and 40%. The pathological mechanisms leading to chronic CPSP are probably inflammation, tissue and nerve damage and alterations in central pain processing. The mechanisms in chronic postsurgical abdominal and pelvic pain are poorly studied and research has largely focused on reporting of prevalence and describing risk factors, including patient characteristics, psychological factors, surgical procedure and pre- and acute postoperative pain. In this review, the most important risk factors are discussed, and aiming for preventive, personalized health care, possible methods for prediction of susceptibility and potential strategies for diminishing chronic postsurgical abdominal and pelvic pain are provided.