Articles: anesthesia.
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Anesthesia and analgesia · Jan 2025
Randomized Controlled TrialPostoperative Innate Immune Dysregulation, Proteomic, and Monocyte Epigenomic Changes After Colorectal Surgery: A Substudy of a Randomized Controlled Trial.
Colorectal surgery is associated with moderate-to-severe postoperative complications in over 25% of patients, predominantly infections. Monocyte epigenetic alterations leading to immune tolerance could explain postoperative increased susceptibility to infections. This research explores whether changes in monocyte DNA accessibility contribute to postoperative innate immune dysregulation. ⋯ These findings illuminate the complex epigenetic modulation influencing monocytes' response to surgical stress, shedding light on potential biomarkers for immune dysregulation. Our results advocate for further research into the role of anesthesia in these molecular pathways and the development of personalized interventions to mitigate immune dysfunction after surgery.
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Randomized Controlled Trial
Effect of melatonin on postoperative cognitive function in elderly patients submitted to transurethral resection of the prostate under spinal anesthesia.
Hospitalization for Transurethral Prostate Resection (TURP) involves circadian rhythm disturbance - a possible cause of Postoperative Neurocognitive Disorder (POCD) in elderly patients. This study investigated whether melatonin ameliorated this effect. ⋯ Melatonin had no statistical effect on POCD, but a selective beneficial effect was observed in two cognitive areas. The high prevalence of preoperative cognitive impairment may be related to the lower urinary tract symptoms which were reasons for the surgery; the unexpected improvement of cognitive performance in all patients at 180 days PO may reflect alleviation of these symptoms.
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Anaesth Intensive Care · Jan 2025
Association of medical emergency team activation in the 24-hour postoperative period with length of stay and in-hospital mortality.
Medical emergency team (MET) activations were designed to improve patient safety and outcomes by providing timely and specialised care to patients experiencing clinical deterioration. The primary objective of this study was to describe the association between MET events in the early (24-h) postoperative period and in-hospital mortality as well as length of stay. A retrospective data linkage study was performed of prospectively collected data from patient administrative data and the MET database at Launceston General Hospital located in Tasmania, Australia. ⋯ Notably, staff concern as a trigger for MET activation was associated with a hazard nearly as great as chest pain. Other MET triggers that reached statistical significance were bleeding, respiratory rate more than 36/min, peripheral oxygen saturations less than 84% and systolic blood pressure less than 80 mmHg. Despite being frequent, MET events should be regarded as a serious marker of an adverse patient journey that may warrant higher resource allocation.
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J Coll Physicians Surg Pak · Jan 2025
Meta AnalysisPeripheral Nerve Block Combined with Low-Dose General Anaesthesia in Elderly Patients Receiving Hip Arthroplasty.
The study assessed the effectiveness and safety of nerve block combined with low-dose general anaesthesia in elderly hip arthroplasty patients, conducted by a meta-analysis of RCTs. Six trials involving 403 patients were identified from databases such as Cochrane, MEDLINE, and PubMed. The results demonstrated a statistically significant difference in pain scores at postoperative 12hours (95% CI, -2.39 to -0.35, p = 0.008) and 24hours (95% CI, -1.86 to -0.50, p = 0.0007). ⋯ However, between the two groups, there was no statistically significant difference in the 48hour pain score (95% CI, -2.58 to 0.62, p = 0.23). Essentially, this approach effectively reduces early post-surgical pain and it minimises anaesthetic use, whilst simultaneously lowering the risk of complications. Key Words: Nerve block, Elderly patients, Hip arthroplasty, Pain, Postoperative complication.
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Anesthesia and analgesia · Jan 2025
Optimal Maternal Ventilation During Laparotomy with General Anesthesia in Pregnancy in the Ovine Model.
General anesthesia during pregnancy is not uncommon, for example, for trauma surgery, cerclage, or cesarean delivery. Current recommendations are to maintain maternal partial pressure of carbon dioxide in arterial blood (paCO2) at 30 mm Hg, which is based solely on the average maternal paCO2 in awake pregnant women. However, there is no evidence that this target, compared to other targets, would enable optimal conditions for the fetus during general anesthesia. Maternal paCO2 can affect uterine blood flow, affinity of hemoglobin for oxygen, and fetal CO2 elimination. In this study, a range of potential targets of maternal paCO2 was investigated in the ovine model, aiming to determine which target is most conducive to physiological fetal blood gas values during laparotomy with general anesthesia. ⋯ This study provides experimental support for the clinical recommendation to maintain maternal paCO2 close to the physiologic value of 30 mm Hg during general anesthesia for maternal laparotomy in pregnancy as it is conducive to physiological fetal blood gas values. Given the lower bound of the 95% confidence interval, the possibility that a lower maternal paCO2 would improve fetal gas exchange cannot be excluded.