Anesthesiology
Audio Summaries

Fragility Index of Randomized Clinical Trials in Perioperative Anesthesia: A Methodological Survey of Guideline-Supporting Evidence

Aug 7, 2026

The authors aimed to evaluate the Fragility Index (FI), Reverse Fragility Index (rFI), and Fragility Quotient (FQ) of randomized controlled trials (RCTs) cited in perioperative anesthesia guidelines, assessing how trial characteristics influence fragility. Their analysis of 161 superiority trials revealed that these trials generally had modest FI values, indicating that statistical significance often hinges on a limited number of outcome events. The study suggests that fragility metrics should be used alongside traditional measures of trial quality to better interpret the evidence supporting perioperative practices.

Effect of Pre-operative Intravenous Crystalloid Bolus on Post-Induction Blood Pressure - a randomized blinded intervention trial

Aug 7, 2026

This study investigates whether administering a pre-operative intravenous crystalloid bolus can reduce the incidence of post-induction hypotension in high-risk patients undergoing major non-cardiac surgery. The randomized trial found no significant difference in the time-weighted average mean arterial pressure below 65 mmHg between patients receiving the crystalloid bolus and those receiving standard care, suggesting that pre-operative crystalloid administration does not effectively prevent post-induction hypotension.

The Adolescent Surgery Experience (ASE) prospective cohort study: Postoperative pain trajectory, opioid use and satisfaction

Aug 4, 2026

The authors aimed to investigate the postoperative pain trajectory, opioid use, and recovery satisfaction among adolescents undergoing major surgical procedures. They found that a significant percentage (57.9%) experienced persistent surgical site pain three months post-surgery, despite high satisfaction with recovery, and nearly 40% continued to use opioids beyond the resolution of severe pain. The study highlights the need for better understanding and management of pain and opioid use in this population.

HIF1A-dependent induction of alveolar miR-147b dampens SARS-CoV-2-associated ARDS via direct targeting of viral RNA

Aug 4, 2026

The authors investigate whether alveolar microRNAs, specifically miR-147b, play a protective role against SARS-CoV-2-associated acute respiratory distress syndrome (ARDS) by targeting viral RNA. They demonstrate that miR-147b is induced by hypoxia-inducible factor 1A (HIF1A) during infection and that it directly interacts with the viral ORF8 region, providing a mechanism for its protective effects in a murine model of SARS-CoV-2 ARDS. This study highlights the potential of miR-147b as an endogenous antiviral agent that mitigates lung injury during viral pneumonia.

Dose-Response Effects of Anterior Chest Wall Loading on Lung Mechanics, Regional Ventilation, and Hemodynamics in Acute Respiratory Distress Syndrome: A Prospective Physiological Study

Aug 4, 2026

This study investigates the dose-response effects of anterior chest wall loading (ACWL) on lung mechanics, regional ventilation, and hemodynamics in patients with acute respiratory distress syndrome (ARDS). The authors hypothesized that low levels of ACWL would reduce transpulmonary driving pressure, while higher levels would lead to derecruitment and hemodynamic compromise. Their findings indicate that ACWL alters pleural pressure and respiratory mechanics in a dose-dependent manner, highlighting its potential as a physiological probe for understanding lung-chest wall interactions rather than a therapeutic strategy.

Development and external validation of a multimodal artificial intelligence mortality prediction model of critically ill patients using multicenter data

Aug 4, 2026

The authors aimed to develop and externally validate a multimodal deep learning model to predict in-hospital mortality risk among critically ill patients within 24 hours of ICU admission, utilizing both structured and unstructured clinical data. Their model demonstrated strong predictive performance across multiple datasets, emphasizing the value of integrating diverse patient information sources for accurate mortality predictions. The study highlights the significance of external validation in confirming the model's effectiveness across different healthcare settings.

Effects of Intraoperative Nociception Monitoring during Adolescent Idiopathic Scoliosis Correction

Aug 3, 2026

This study aimed to determine whether intraoperative nociception monitoring using the Analgesia Nociception Index (ANI) could reduce postoperative morphine consumption in adolescents undergoing surgery for idiopathic scoliosis. The results showed no significant difference in morphine use on the first day post-surgery between the ANI-guided group and the control group, although the ANI group received less remifentanil during the procedure. Additionally, there were no differences in the incidence of persistent postoperative pain after six months.

Measures of Quality of Recovery and Discharge-readiness Tools in the Pediatric Postanesthesia Care Unit

Jul 28, 2026

The authors aimed to evaluate the effectiveness of various tools used to assess discharge readiness and early recovery quality in pediatric postanesthesia care units. Through a structured literature review, they identified eight assessment tools and noted their strengths and weaknesses in capturing critical recovery domains relevant to children, families, and clinicians. The study highlights the need for a dedicated quality-of-recovery measure tailored specifically for pediatric patients in postanesthesia care.

Anesthesia and surgery induce sex-dependent Tau phosphorylation and behavior changes in aged mice

Jul 21, 2026

The authors investigate whether anesthesia and surgery induce sex-dependent changes in Tau phosphorylation and behavior in aged mice, specifically focusing on the role of testosterone and androgen receptor signaling. Their findings reveal that anesthesia/surgery significantly increases Tau-PT217 levels and leads to postoperative delirium-like behavior in aged female mice, but not in males, suggesting that lower testosterone levels in females may contribute to these effects. Additionally, manipulating testosterone levels in male and female mice further supports the hypothesis that sex differences in Tau phosphorylation and behavior are influenced by androgen signaling.

Association of Intraoperative Narrow Pulse Pressure during Normotension with Postoperative Acute Kidney Injury: A Retrospective Cohort Analysis

Jul 21, 2026

The authors aimed to investigate the relationship between intraoperative narrow pulse pressure and the incidence of postoperative acute kidney injury (AKI) in patients undergoing non-cardiac surgeries. Their findings indicate that narrow pulse pressure, even in the presence of normal mean arterial pressure, is independently associated with an increased risk of AKI, suggesting that relying solely on mean arterial pressure may overlook critical low-flow states that contribute to kidney injury.