Articles: acute-pain.
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Int J Orthop Trauma Nurs · Feb 2017
ReviewAcute to chronic pain transition in extremity trauma: A narrative review for future preventive interventions (part 2).
The first part of this series of 2 articles revealed that chronic pain is an important issue post extremity trauma (ET) involving permanent biological transformations. Interventions aimed at preventing chronic pain in ET patients are therefore required. ⋯ This narrative review highlights factors placing ET patients at higher risk of chronic pain or protecting them against this problem. Determining how these factors could be addressed in preventive interventions is the next step before undertaking their development.
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Curr Pain Headache Rep · Feb 2017
ReviewUpdates in Pediatric Regional Anesthesia and Its Role in the Treatment of Acute Pain in the Ambulatory Setting.
The purpose of this review is to summarize the latest advances in pediatric regional anesthesia with special emphasis on its role in the ambulatory surgical setting. ⋯ Undertreated pain in children following ambulatory surgery is not a rare occurrence and it is associated with increased morbidity and significant psychosocial harm. Use of regional anesthesia as part of the anesthetic approach in the ambulatory setting is safe when performed on children under general anesthesia and inclusion of certain adjuncts improves block outcomes. Ultrasonographic visualization during blockade improves safety and prolongs duration. Ambulatory continuous nerve blocks in older children are safe, efficacious, and associated with high patient and caregiver satisfaction rates. In the ever-growing field of pediatric same-day surgery, safe and efficient flow through the perioperative period necessitates use of a multimodal approach, of which regional anesthesia is but one important component. Perioperative complications are minimized with less opioid use, and yet appropriate pain management must be ensured. Pediatric regional anesthesia has been shown to be exceedingly safe under general anesthesia. Findings demonstrate that advances in ultrasound technology have contributed to safer and longer-lasting analgesia. It facilitates the development of new methods by which regional anesthesia can improve postoperative analgesia in children upon discharge and beyond.
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Multicenter Study
Genetic variant rs3750625 in the 3'UTR of ADRA2A affects stress-dependent acute pain severity after trauma and alters a microRNA-34a regulatory site.
α2A adrenergic receptor (α2A-AR) activation has been shown in animal models to play an important role in regulating the balance of acute pain inhibition vs facilitation after both physical and psychological stress. To our knowledge, the influence of genetic variants in the gene encoding α2A-AR, ADRA2A, on acute pain outcomes in humans experiencing traumatic stress has not been assessed. In this study, we tested whether a genetic variant in the 3'UTR of ADRA2A, rs3750625, is associated with acute musculoskeletal pain (MSP) severity following motor vehicle collision (MVC, n = 948) and sexual assault (n = 84), and whether this influence was affected by stress severity. ⋯ In both cohorts, the minor allele at rs3750625 was associated with increased musculoskeletal pain in distressed individuals (stress*rs3750625 P = 0.043 for MVC cohort and P = 0.007 for sexual assault cohort). We further found that (1) miR-34a binds the 3'UTR of ADRA2A, (2) the amount of repression is greater when the minor (risk) allele is present, (3) miR-34a in the IMR-32 adrenergic neuroblastoma cell line affects ADRA2A expression, (4) miR-34a and ADRA2A are expressed in tissues known to play a role in pain and stress, (5) following forced swim stress exposure, rat peripheral nerve tissue expression changes are consistent with miR-34a regulation of ADRA2A. Together, these results suggest that ADRA2A rs3750625 contributes to poststress musculoskeletal pain severity by modulating miR-34a regulation.
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Acute pain is a prevalent problem in a growing segment of the older adult population and is often ineffectively managed despite the accumulation of evidence to guide assessment and support interventions in managing pain. Improvements in acute pain management in older adults are needed to provide consistent and quality pain assessment techniques and treatment therapies consistent with patient and/or family preferences. The current article briefly discusses ways to improve the pain experience and outcomes for older patients and families. [Journal of Gerontological Nursing, 43(2), 18-27.].
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Experimental neurology · Feb 2017
The inhibition of spinal synaptic plasticity mediated by activation of AMP-activated protein kinase signaling alleviates the acute pain induced by oxaliplatin.
Our recent findings demonstrated that oxaliplatin entering CNS may directly induce spinal central sensitization, and contribute to the rapid development of CNS-related side effects including acute pain during chemotherapy. However, the mechanism is largely unclear. In the current study, we found that the amplitude of C-fiber-evoked field potentials was significantly increased and the expression of phosphorylated mammalian AMP-activated protein kinase α (AMPKα) was markedly decreased following high frequency stimulation (HFS) or single intraperitoneal injection of oxaliplatin (4mg/kg). ⋯ Furthermore, spinal application of AMPK inhibitor compound C (5μg) induced the spinal LTP, thermal hyperalgesia and mechanical allodynia, and rapamycin attenuated the spinal LTP, the thermal hyperalgesia and mechanical allodynia following oxaliplatin treatment (i.p.). Local application of metformin significantly decreased the mTOR and p70S6K activation induced by tetanus stimulation or oxaliplatin (i.p.). These results suggested that the decreased AMPKα activity via negatively regulating mTOR/p70S6K signal pathway enhanced the synaptic plasticity and contributed to acute pain induced by low concentration of oxaliplatin entering CNS.