Articles: pain.
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The prevalence of postoperative pain is notably high among the elderly population, which poses significant challenges for their postoperative recovery. In this study, we aimed to identify preoperative predictors for acute and chronic postoperative pain in patients undergoing lumbar spinal surgery through a longitudinal investigation. ⋯ The heightened occurrence of postoperative pain among the elderly presents formidable obstacles to their recuperation. This study delves into identifying preoperative factors influencing acute and chronic postoperative pain. Our findings indicate that preoperative pain and peak alpha frequency are crucial predictors of acute postoperative pain. However, the predictive performance for chronic postoperative pain is limited, although age was a significant predictor of chronic postoperative pain. These insights contribute to the identification of patients at elevated risk for severe acute and chronic postoperative pain, offering valuable guidance for pre-surgical risk assessment.
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Pain is the leading cause of disability and reduced quality of life worldwide. Despite the increasing burden for patients and healthcare systems, pain research remains underfunded and under focused. Having stakeholders identify and prioritize areas that need urgent attention in the field will help focus funding topics, reduce 'research waste', improve the effectiveness of pain research and therapy and promote the uptake of research evidence. In this study, the European Pain Federation (EFIC) developed a Pain Research Strategy for Europe. ⋯ EFIC has developed a Pain Research Strategy for Europe that identifies pain research areas deserving the most focus and financial support. Implementation and wide dissemination of this Strategy is vital to increase the conduct of urgent pain projects, pain research funding and the implementation of research findings into practice, to ultimately decrease the personal, societal and financial burden of pain.
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Acta Anaesthesiol Scand · Jan 2025
Does cytochrome 2D6 genotype affect the analgesic efficacy of codeine after ambulatory surgery? Prospective trial in 987 adults.
Paracetamol-codeine combination tablet is widely used in pain management after day surgery. For safety reasons, its use has decreased in recent years. Codeine is a prodrug metabolised in the liver by the cytochrome P450 2D6 (CYP2D6) enzyme to morphine that produces the analgesic effect of codeine. CYP2D6 is highly polymorphic, and based on genotypes, individuals can be divided into four categories: poor-, intermediate-, normal- and ultrarapid metabolisers. Differences in morphine and its metabolite concentrations have been described between different CYP2D6 genotypes following codeine administration. The aim of the study was to investigate the possible effect of CYP2D6 genotype on codeine efficacy and adverse effects in a large cohort of adult patients undergoing ambulatory surgery. ⋯ CYP2D6 genotype appears to be of minor importance for the analgesic efficacy of oral paracetamol-codeine combination therapy after ambulatory surgery in adult patients undergoing similar types of surgery as in the present study but it may affect the risk of constipation.
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In Bayesian models including predictive processing, the magnitude and precision of pain expectancies are key determinants of perception. However, relatively few studies have directly tested whether this holds for pain, and results so far have been inconclusive. Here, we investigated expectancy effects on pain experiences and associated affective responses. ⋯ Our work supports, challenges, and extends the application of Bayesian and predictive processing frameworks to the influence of pain predictions on pain. Under- and overpredictions of pain yielded assimilation of pain experiences, but assimilation was not systematically stronger with larger prediction errors or greater precision. Moreover, under- and overpredictions resulted in disappointment and relief, respectively. This research signifies the importance of establishing accurate predictions of pain in clinical practice.
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Acta Anaesthesiol Scand · Jan 2025
Procedure time-of-day effects on postoperative opioid requirements in children.
Postoperative analgesic requirements in adults follow circadian rhythm patterns with requirements for opioids and local anesthetics highest in the morning. Procedure time of day may also potentially affect circadian rhythm patterns with surgery at night promoting wakefulness during nighttime hours. This disruption may produce a shift in the circadian rhythm and potentially affect when postoperative opioid requirements are highest. We hypothesized that children undergoing surgery at night would have higher postoperative opioid requirements during nighttime hours secondary to a shift in the circadian rhythm with those requirements remaining higher than daytime requirements for the duration of the hospital stay. ⋯ We found that procedure time of day did not impact postoperative opioid requirements in children undergoing a laparoscopic appendectomy for complicated appendicitis. Both children undergoing an appendectomy during the day or at night required more morphine equivalents during daytime hours than during nighttime hours. Surgery at night did not produce a shift in opioid requirements postoperatively from daytime hours to nighttime hours in children undergoing an appendectomy at night.