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Daily Report

Daily Anesthesiology Research Analysis

08/19/2026
3 papers selected
42 analyzed

Analyzed 42 papers and selected 3 impactful papers.

Summary

Today’s most impactful anesthesiology research includes a large multicenter randomized trial showing that preoperative high-dose corticosteroids do not improve outcomes after elective digestive cancer surgery and should not be used routinely. A registered randomized noninferiority trial supports anterior quadratus lumborum block as an effective alternative to thoracic paravertebral block for percutaneous nephrolithotomy, while a multicenter cohort study demonstrates that postoperative anesthesia care unit delirium affects approximately one in five older surgical patients.

Research Themes

  • Perioperative inflammation modulation and definitive negative clinical evidence
  • Regional anesthesia and opioid-sparing postoperative recovery
  • Detection and prevention of postoperative delirium in older adults

Selected Articles

1. Preoperative High-Dose Corticosteroids in Digestive Cancer Surgery: A Randomized Clinical Trial.

82.5Level IRCT
JAMA surgery · 2026PMID: 42616512

In this double-blind, placebo-controlled multicenter trial across 23 French hospitals, 1,210 patients undergoing elective curative digestive cancer surgery were randomized to intravenous methylprednisolone 20 mg/kg or placebo. Among 1,188 patients with 30-day follow-up, major postoperative complications occurred in 23% versus 20%, respectively, without a statistically significant difference, and no secondary outcome was improved.

Impact: This large, rigorous trial directly addresses a controversial perioperative intervention and provides practice-changing negative evidence. Its results argue against routine preoperative high-dose corticosteroids in elective digestive cancer surgery, preventing ineffective treatment and potential steroid-related harm.

Clinical Implications: Routine administration of a preoperative pulse dose of methylprednisolone 20 mg/kg should not be recommended for elective digestive cancer surgery solely to reduce postoperative complications or inflammation. Clinicians should continue to use corticosteroids only for established indications and weigh procedure-specific risks and benefits.

Key Findings

  • Among 1,188 patients with 30-day follow-up, major postoperative complications occurred in 23% of the methylprednisolone group and 20% of the placebo group, with no significant difference (P = .16).
  • Postoperative infections, intra-abdominal infections, unsatisfactory wound healing, and hospital length of stay did not differ significantly between groups.
  • The trial concluded that preoperative high-dose corticosteroids provided no postoperative benefit and should not be recommended routinely.

Methodological Strengths

  • Double-blind, placebo-controlled superiority randomized clinical trial with prespecified outcomes
  • Large multicenter sample involving 23 French digestive surgical oncology hospitals and prospective trial registration

Limitations

  • The findings apply primarily to elective digestive cancer surgery with curative intent and may not generalize to emergency surgery or isolated hepatic surgery.
  • Follow-up for the primary analysis was limited to 30 postoperative days, so long-term oncologic or functional effects were not established.

Future Directions: Future research should determine whether selected subgroups, specific procedures, or different corticosteroid regimens have distinct effects, while incorporating longer-term oncologic, infectious, and patient-reported outcomes. Current work should prioritize implementation studies that reduce unnecessary perioperative steroid use.

IMPORTANCE: Modulating perioperative inflammation could be associated with fewer postoperative complications and better outcomes in major digestive surgery. The clinical benefit of corticosteroids with this purpose remains controversial. OBJECTIVE: To assess whether preoperative high-dose corticosteroids improve postoperative outcomes after surgery for digestive cancer. DESIGN, SETTING, AND PARTICIPANTS: This double-blind, placebo-controlled, superiority randomized clinical trial included patients undergoing elective surgery with curative intent for digestive cancer. This was a multicenter trial with the participation of 23 French hospitals working as a reference for digestive surgical oncology.

2. Quadratus Lumborum Block versus Thoracic Paravertebral Block for Postoperative Recovery Quality after Percutaneous Nephrolithotomy: A Randomized Noninferiority Trial.

77Level IRCT
Pain and therapy · 2026PMID: 42613545

This registered randomized noninferiority trial randomized 72 adults undergoing elective unilateral percutaneous nephrolithotomy to anterior quadratus lumborum block or thoracic paravertebral block. The quadratus lumborum block was noninferior for 24-hour Quality of Recovery-15 scores, while also prolonging time to first analgesia, reducing 24-hour morphine consumption and pain burden, and showing less hypotension.

Impact: The study evaluates patient-centered recovery rather than pain alone and supports a technically accessible regional anesthesia alternative. The combination of noninferior recovery, opioid reduction, and fewer observed hypotensive events may influence block selection for percutaneous nephrolithotomy.

Clinical Implications: Anterior quadratus lumborum block may be considered as an alternative to thoracic paravertebral block for analgesia during percutaneous nephrolithotomy, particularly when minimizing hypotension or opioid exposure is desirable. The secondary benefits should be interpreted cautiously until confirmed in larger trials.

Key Findings

  • Median 24-hour Quality of Recovery-15 scores were 124 with quadratus lumborum block and 122 with thoracic paravertebral block; the median difference was 2 points, with a 95% CI of -1 to 5, meeting the noninferiority criterion.
  • Quadratus lumborum block prolonged time to first analgesia by 7.9 hours and reduced 24-hour morphine consumption by 4 mg.
  • Hypotension occurred in 11% of the quadratus lumborum block group versus 36% of the thoracic paravertebral block group.

Methodological Strengths

  • Prospective randomized noninferiority design with a prespecified recovery-quality endpoint and margin
  • Registered trial with standardized multimodal analgesia and confirmation in both modified intention-to-treat and per-protocol analyses

Limitations

  • The sample size was modest and limited to American Society of Anesthesiologists physical status I-II adults undergoing elective unilateral procedures.
  • The reductions in pain, morphine use, and hypotension were secondary or exploratory findings and were not powered as definitive superiority outcomes.

Future Directions: Larger multicenter randomized trials should assess the reproducibility of the hypotension and opioid-sparing findings, compare block techniques across diverse surgical and patient-risk profiles, and evaluate recovery beyond 24 hours, including mobilization, discharge readiness, and patient-reported outcomes.

INTRODUCTION: We aimed to determine whether anterior quadratus lumborum block (QLB) at the lateral supra-arcuate ligament is noninferior to thoracic paravertebral block (TPVB) for postoperative recovery quality after percutaneous nephrolithotomy (PCNL). METHODS: A total of 72 adults (American Society of Anesthesiologists physical status I-II) undergoing elective unilateral PCNL were randomized to QLB (n = 36) or TPVB (n = 36). Before general anesthesia, patients received ultrasound-guided anterior QLB (0.5% ropivacaine, 30 mL) or TPVB (0.5% ropivacaine, 20 mL), with standardized multimodal analgesia including patient-controlled intravenous morphine.

3. PACU Delirium in Older Surgical Patients: Incidence, Nursing-Sensitive Correlates, and Outcomes in a Multicenter Chinese Cohort Study.

74Level IICohort
Clinical interventions in aging · 2026PMID: 42614798

This prospective cohort study across five Chinese tertiary hospitals evaluated 2,200 adults aged 65 years or older undergoing elective major noncardiac surgery using repeated RASS-gated CAM-ICU assessments. PACU delirium occurred in 19.2% of patients and was predominantly hypoactive, while adding nursing-sensitive variables to conventional risk factors produced statistically detectable but clinically limited improvement in discrimination, with the signal concentrated in urinary catheterization.

Impact: The study quantifies a frequently overlooked but clinically important PACU complication in a large multicenter cohort and highlights the predominance of hypoactive delirium. It translates epidemiologic findings into practical priorities: repeated screening and minimization of potentially modifiable catheter exposure.

Clinical Implications: PACU protocols for older adults should include repeated delirium screening, with attention to hypoactive presentations that may not be behaviorally obvious. Catheter necessity should be reassessed early, although the modest incremental predictive value of nursing-sensitive variables does not justify use of the model as a standalone bedside prediction tool.

Key Findings

  • PACU delirium occurred in 422 of 2,200 patients, corresponding to 19.2% (95% CI, 17.6%-20.9%).
  • Hypoactive delirium accounted for 64.2% of PACU delirium cases.
  • Adding eight nursing-sensitive PACU variables to conventional clinical predictors produced statistically detectable but clinically limited improvement in discrimination, with the main signal associated with urinary catheterization.

Methodological Strengths

  • Prospective multicenter cohort design involving five Chinese tertiary hospitals and more than 2,000 older surgical patients
  • Repeated RASS-gated CAM-ICU assessments at prespecified PACU timepoints and comparison of nested prediction models

Limitations

  • The study was observational, so associations cannot establish causality, particularly for urinary catheterization.
  • Complete-case modeling included 2,048 patients, and external validation is required before applying the risk findings broadly.

Future Directions: Future studies should externally validate the findings in different health systems, test targeted catheter-minimization and delirium-prevention bundles, and assess whether repeated PACU screening leads to earlier treatment and improved postoperative outcomes.

BACKGROUND: Post-anesthesia care unit (PACU) delirium in older surgical patients is poorly characterized in Chinese multicenter settings, and whether nursing-sensitive PACU variables add explanatory value beyond conventional clinical risk factors has not been formally tested. METHODS: In this prospective cohort study across five Chinese tertiary hospitals, 2200 patients aged 65 years or older undergoing elective major noncardiac surgery (after excluding 60 with persistent deep sedation) were assessed for PACU delirium using a Richmond Agitation-Sedation Scale (RASS)-gated, repeated Confusion Assessment Method for the Intensive Care Unit (CAM-ICU) protocol at three timepoints (10-20 and 40-60 minutes after admission, and before discharge). Two prespecified nested logistic models were compared in an explanatory framework: Model A (conventional clinical predictors) and Model B (Model A plus eight nursing-sensitive PACU variables).