Monthly ReportApr 1–30, 2026
Anesthesiology, April 2026 edition
We read 1955 papers and selected 5.
Summary
April’s anesthesiology research converged on organ protection, neuromodulation, and safer brain-directed therapies. A large NEJM pragmatic RCT clarified no renal advantage of balanced crystalloids over saline in pediatric septic shock, while an IPD meta-analysis in Intensive Care Medicine showed biomarker-guided KDIGO kidney-protection bundles reduce moderate-to-severe AKI after major surgery. Translational neuromodulation advanced as Nature Communications mapped a causal auricle-to-brain circuit underpinning taVNS analgesia and PNAS identified a peripheral vagal TRPV3 sensor mediating sedative antistress effects. The Lancet Psychiatry confirmed magnetic seizure therapy (MST) matches unilateral ultra-brief ECT efficacy with markedly better cognitive safety, signaling practice changes for convulsive therapies and anesthetic workflows.
Selected Articles
1. Balanced Fluid or 0.9% Saline in Children Treated for Septic Shock.
A multinational pragmatic RCT across 47 EDs (n≈8,482) found no reduction in MAKE30 with balanced crystalloids versus saline for pediatric septic shock; hospital-free days were similar, with less hyperchloremia/hypernatremia but slightly more hyperlactatemia in the balanced group.
Impact: Definitively clarifies a common resuscitation choice without renal benefit of balanced fluids over saline in pediatric septic shock, guiding policy and bedside practice.
Clinical Implications: Either balanced crystalloids or saline are reasonable for initial pediatric septic shock resuscitation; consider balanced fluids to avoid hyperchloremia/hypernatremia while monitoring lactate trends.
Key Findings
- MAKE30: 3.4% (balanced) vs 3.0% (saline); RR 1.10 (95% CI 0.88–1.40).
- Hospital-free days identical (median 23 in both arms).
- Electrolyte profile: less hyperchloremia/hypernatremia but slightly more hyperlactatemia with balanced fluids.
2. Auricular vagus nerve stimulation drives analgesia via an auricle-brain axis in a mouse model of neuropathic pain.
Multimodal preclinical experiments mapped an auricle-to-brain circuit (jugular-nodose ganglia → NTS POMC neurons → vlPAG glutamatergic neurons) that causally mediates taVNS analgesia, with optogenetic activation reproducing and chemogenetic silencing abolishing the effect.
Impact: Provides causal circuit-level evidence essential for optimizing taVNS parameters, targets, and biomarkers, accelerating rational clinical translation for perioperative pain.
Clinical Implications: Supports targeted taVNS parameter selection and candidate biomarkers (e.g., brainstem/PAG engagement) for early human trials aiming at perioperative and neuropathic pain control.
Key Findings
- taVNS produced robust analgesia in neuropathic pain mice.
- Identified causal JNG → NTS (POMC) → vlPAG glutamatergic circuit.
- Optogenetic activation mimicked and chemogenetic silencing abolished taVNS analgesia.
3. Implementation of a kidney protection strategy to prevent acute kidney injury after major surgery in high-risk patients identified by biomarkers: a systematic review and individual participant data meta-analysis of randomized controlled trials.
An IPD meta-analysis pooling four RCTs (n=1,851) showed that a KDIGO-based kidney-protection bundle in biomarker-enriched high-risk surgical patients reduced KDIGO stage ≥2 AKI within 72 hours (OR 0.55, 95% CI 0.44–0.70) without heterogeneity.
Impact: High-level, implementable evidence that standardized perioperative kidney-protection bundles prevent clinically meaningful AKI in biomarker-identified high-risk patients.
Clinical Implications: Integrate KDIGO-based bundles (hemodynamics, nephrotoxin stewardship, frequent renal labs, glucose control) into perioperative pathways for biomarker-identified high-risk patients and scale via pragmatic multicenter implementation.
Key Findings
- Reduced KDIGO stage ≥2 AKI within 72 h: OR 0.55 (95% CI 0.44–0.70).
- No heterogeneity across included trials.
- Bundle elements combined hemodynamic/fluid optimization, nephrotoxin avoidance, monitoring, and glycemic control.
4. Confirmatory efficacy and safety trial of magnetic seizure therapy versus right unilateral ultra-brief electroconvulsive therapy in depression (CREST-MST): a randomised, double-blind, non-inferiority trial in Canada and the USA.
A multicenter randomized, double-blind non-inferiority trial (n=239) showed MST achieved remission rates non-inferior to right unilateral ultra-brief ECT, with substantially fewer autobiographical memory deficits and fewer adverse event-related discontinuations.
Impact: Defines MST as an ECT-comparable yet cognitively safer convulsive therapy, with immediate implications for service configuration and anesthetic planning.
Clinical Implications: Consider MST for patients prioritizing cognitive preservation; align anesthetic workflows while enhancing cognitive monitoring and recovery planning.
Key Findings
- Non-inferior remission rates versus RUL-UB ECT.
- Markedly lower autobiographical memory worsening with MST (2.7% vs 17.3%).
- Fewer non-serious AE-related discontinuations with MST.
5. Vagal nerve TRPV3 regulates sedative-mediated appeasement.
Preclinical work identified TRPV3 in the nodose ganglion as a peripheral sensor mediating the antistress/autonomic-stabilizing effects of citronellal and sevoflurane via an NG→cNTS glutamatergic pathway; vagotomy abolished these effects, establishing a causal vagal mechanism.
Impact: Reveals a druggable peripheral vagal target for anxiolysis/sedation, informing perioperative autonomic modulation strategies that avoid deeper CNS depression.
Clinical Implications: Motivates development of TRPV3-directed agents or peripheral modulation (drug/device) to blunt perioperative stress responses and stabilize cardiopulmonary parameters without deep sedation.
Key Findings
- Citronellal and sevoflurane attenuated stress-related autonomic hyperactivity via nodose TRPV3.
- NG→cNTS glutamatergic signaling was necessary; vagotomy abolished effects.
- Identifies peripheral TRPV3 as a causal mediator of sedative/antistress effects.