Weekly digest
Week of 14 September 2026
37 papers collected from PubMed, last swept 14 September 2026.
Top 10
Ranked by study design, journal and study size.
Restrictive vs Liberal Transfusion Strategy in Traumatic Brain Injury: A Secondary Analysis of the TRAIN Trial
In the TBI subgroup of the TRAIN trial, a liberal transfusion threshold (Hb <9 g/dL) was associated with fewer unfavorable neurological outcomes at 180 days than a restrictive threshold (Hb <7 g/dL): 58.5% vs 67.4% (RR 0.86, 95% CI 0.75–1.00; P=.047), with no excess infection or cerebral ischemia. Signal is fragile (fragility index 1) but pushes toward a higher transfusion trigger in anemic TBI patients.
Western Trauma Association critical decisions in trauma: Update on the management of the mangled extremity
Updated WTA critical-decisions algorithm for the mangled extremity — structured guidance on assessment, resuscitation, revascularization sequencing, and limb salvage versus early amputation decision-making after severe extremity trauma.
2026 Systematic Review of Evidence-Based Guidelines for Prehospital Care
Biennial systematic review identified 71 new prehospital evidence-based guidelines (2023–2025), of higher quality than prior reviews; ~half met all high-quality (NAM) criteria — mostly CPR/cardiac and trauma compilations — providing a reference set to guide EMS protocol development and training.
Extremity compartment syndrome: What you need to know
Practice-focused review for the trauma/general surgeon reframing acute extremity compartment syndrome: the classic "6 P's" are misleading — pain out of proportion, refractory to analgesia, is often the ONLY early sign, while the other 5 P's mark late/missed disease with preventable harm. Early fasciotomy remains the only effective treatment. Consolidates the updated 2025 AAOS clinical practice guideline, ACS TQIP best-practice, and BOA/AAGBI consensus.
Management of arterial injuries associated with musculoskeletal trauma
Practice-guidance paper on recognising and managing limb-threatening arterial injury in the setting of musculoskeletal trauma — emphasising early identification, time-to-revascularisation, and coordinated ortho-vascular decision-making.
Consensus Guidelines for Prehospital Transfusion in Children: A Modified Delphi Study
A 20-expert modified Delphi produced 35 consensus criteria for pediatric prehospital blood transfusion: eligibility = known/suspected severe hemorrhage PLUS ≥1 shock indicator after first-line hemorrhage control PLUS EMS clinical judgment; aims to standardize highly variable pediatric PHT protocols (no consensus reached on EtCO2).
Physiological limits of capillary refill time: a human endotoxemia study
Using observer-free quantitative capillary refill time in an LPS endotoxemia model, finger CRT was biphasic — prolonging to >8 s early, then shortening to ~1.3 s during persisting inflammation — crossing the 3-s threshold in both directions within a single episode, and strongly driven by skin temperature. A single CRT value against a fixed threshold is unreliable; within-patient change over time is the informative signal. Mechanistic (healthy volunteers) — needs confirmation in patients.
Intravenous or Intraosseous Vascular Access in Cardiac Arrest: An Individual Participant Data Meta-Analysis
IPD meta-analysis of 2 RCTs (7,561 OHCA patients) found no significant difference between intraosseous-first and intravenous-first vascular access for 30-day survival (OR 1.01) or favorable neurologic outcome (OR 1.08); the ROSC point estimate slightly favored IV but was not significant.
Comparison of outcomes based on treatment type for geriatric acetabular fractures: A systematic review and meta-analysis
In geriatric acetabular fractures, primary "fix-and-replace" trauma arthroplasty (THA/combined hip procedure) gave better 3-month Harris Hip Scores and fewer reoperations than ORIF alone (pooled OR 2.34 favoring arthroplasty), with no difference in 90-day mortality despite longer operative time and more blood loss — supporting primary arthroplasty as first-line for selected elderly patients with comminuted fractures.
Digital Stop The Bleed® training compared with in-person Stop The Bleed® training: Human instructors needed to demonstrate psychomotor skills
Digital Stop the Bleed training was non-inferior to instructor-led training for knowledge, but laypeople performed hands-on skills worse (wound packing 80% vs 100%; tourniquet 52% vs 86%). Digital training should supplement, not replace, in-person psychomotor demonstration; learner self-efficacy correlated poorly with actual skill.
By category
Consensus/Guideline1 paper
[Expert consensus on the management of traumatic brain injury in mass casualty incidents (2026 edition)]
New multidisciplinary consensus (42 recommendations) for managing TBI specifically in resource-constrained mass casualty incidents — covers on-site triage, tiered decision-making by injury severity, transport, in-hospital priority management, ICP monitoring, and early rehab. Fills a gap left by routine-practice TBI guidelines.
New Research22 papers
Nonoperative Management in Emergency General Surgery: Does It Matter for Surgical Quality Benchmarking in Older Adults?
Across 207,270 older EGS patients, hospitals with a higher operative-to-nonoperative ratio had modestly higher odds of home discharge (OR 1.10), while raw operative volume did not — suggesting management-pattern ratios may benchmark quality better than volume alone.
Distinct weaning phenotypes in patients unsuccessful in weaning from invasive mechanical ventilation (WEAN SAFE secondary analysis)
Among ICU patients who fail to wean, three distinct phenotypes emerge defined by separation-attempt count and timing of withdrawal-of-life-sustaining-therapy (WLST); failed first separation attempts were tightly linked to WLST decisions and 78% ICU mortality, flagging an early high-risk trajectory.
Perioperative Continuation of Code-status Limitations and Early Postoperative Mortality: A Retrospective Cohort Study
Among 2,833 patients with pre-existing code-status limitations going to the OR, those who kept a not-full-code status (18%) had higher 3-day mortality than those reversed to full code (2.9% vs 1.2%; aOR 2.18). Most early deaths followed a transition to comfort-focused care — reflecting goals-of-care trajectories, not failed rescue.
Rib fixation still helps: Surgical stabilization of rib fractures in traumatic brain injury, a TQIP Study
In patients with >=3 rib fractures and concomitant TBI, surgical stabilization of rib fractures (SSRF) was associated with markedly lower in-hospital mortality in focal TBI (OR 0.26) and diffuse TBI, with TBI phenotype modifying the benefit. Suggests concomitant TBI should not automatically exclude patients from SSRF.
Balanced crystalloid versus saline for resuscitation in adult sepsis: a systematic review and meta-analysis
Across 8 studies (8,173 patients, 7 RCTs), balanced crystalloids reduced mortality vs saline (RR 0.92, 95% CI 0.86–0.98; moderate certainty) plus less AKI, hyperchloremia, and RRT, and more ICU/ventilator/vasopressor-free days. Supports preferring balanced crystalloids over saline in sepsis resuscitation.
Barriers to dispatcher-assisted CPR are associated with delayed bystander CPR and worse outcomes in out-of-hospital cardiac arrest: A retrospective cohort study
In 3,263 confirmed OHCA calls, ≥1 barrier to dispatcher-assisted CPR occurred after arrest recognition in 44% (most often inability to move the patient). Barrier-present calls had lower bystander-CPR initiation, lower ROSC (aRR 0.89) and markedly lower 30-day survival (aRR 0.57) — a concrete target for improving dispatch call handling.
Impact of operative intervention in blunt cerebral vascular injury
Among 65,171 BCVI patients in the National Trauma Databank (2017–2024), operatively managed patients were more severely injured with higher stroke rates (14% endovascular, 10% open), yet survival to discharge did not differ from non-operative management (86% vs 87%); use of interventions declined over the period.
In-Hospital Cardiac Arrest in Impella-Supported Cardiogenic Shock: Insights From the J-PVAD Registry
Across 8,577 Impella-treated cardiogenic shock patients, in-hospital cardiac arrest before implantation marked a distinct high-risk phenotype (30-day mortality 48% vs 29% no-arrest; adjusted HR 1.54) with more bleeding, limb ischemia, stroke and sepsis; lactate >4, creatinine >1.5, longer arrest time and VA-ECMO predicted death, supporting early risk stratification.
A systematic review of brain structural and functional alterations in pediatric mild traumatic brain injury
Multimodal MRI synthesis finds pediatric mild TBI is associated with widespread white-matter microstructural disruption, prefrontal/parietal cortical thinning and hippocampal atrophy persisting up to a year, and network reorganization — evidence that "mild" pediatric TBI carries measurable, sometimes chronic, neurobiological changes. Mechanistic/imaging, not yet a management change.
Cost-Effectiveness of Decompressive Craniectomy in Severe Traumatic Brain Injury Patients: A Systematic Review of Economic Studies
Decompressive craniectomy yields higher QALY gains than medical management but is costlier at 12 months; cost-effectiveness falls as injury severity rises and disappears at the extreme end. DC decisions should weigh both expected clinical benefit and cost, and favor patients at lower risk of unfavorable outcome.
The role of artificial intelligence in the diagnosis and prognosis of traumatic brain injury based on brain CT scans: a systematic review
Systematic review of 22 studies: AI on non-contrast head CT reaches high diagnostic accuracy (AUC often >0.90) for TBI findings and moderate-to-high prognostic discrimination, but nearly all studies are retrospective, only 9 had external validation, and all prognostic models were high risk of bias — not ready for routine clinical use without prospective multicenter validation.
Impact of pre-injury anticoagulation on outcomes in middle-aged trauma patients: a matched-pair analysis of the TraumaRegister DGU
In trauma patients aged 40–60 (ISS ≥9), pre-injury antithrombotic therapy raised coagulopathy rates (especially VKA/DOAC) but, after matching, showed no clinically relevant difference in mortality (6.5% vs 6.2%). Unlike in the elderly, anticoagulation may not independently worsen survival in middle-aged trauma.
A national analysis evaluating epidemiology of traumatic e-scooter injuries: injury patterns, helmet use, and alcohol intoxication
National TQIP analysis (8,728 patients, 2017–2023) shows sharply rising e-scooter trauma; injuries were mostly mild-moderate but head/neck trauma caused 96% of the (low, 0.9%) deaths, helmet use was rare (12%) and alcohol present in 16.5% — reinforcing the case for helmet and prevention policy.
Association between the first post-resuscitation PaCO2 and neurologic outcomes in children with out-of-hospital cardiac arrest: a multicenter retrospective cohort study
In the Japanese pediatric OHCA registry, first post-ROSC PaCO2 category (hypo-, normo-, hypercapnia) showed no clear independent association with 30-day favorable neurologic outcome or survival, though estimates were imprecise — no strong signal to support a specific early CO2 target in children.
Small bowel obstruction in older adults: similar nonoperative success but worse outcomes across management strategies — ESTES SnapSBO
Older SBO patients achieved nonoperative resolution rates similar to younger patients (~69%) but had far higher complications (16.7% vs 6.7%) and mortality (6.9% vs 3.6%); decisions should weigh etiology, imaging severity and frailty rather than chronological age.
Dislocations after hip hemiarthroplasty for acute femoral neck fractures: a scoping review
Across 178 studies, hemiarthroplasty dislocation rates ranged 0–16.6% (RCT median 2.1%) and have fallen over time. The main modifiable signal: avoid the posterior surgical approach to reduce dislocation, especially in cognitively impaired patients, and account for acetabular size/offset. Patient-reported outcomes after dislocation are essentially unstudied.
Early Arterial pH Changes as Strong Predictors of Mortality in Sepsis: A Multicenter Cohort Study
In sepsis, the drop in arterial pH during ED-to-ICU transition (ΔpH) independently predicted 28-day mortality across acid-base categories, with the strongest signal in patients with a normal baseline pH (adjusted HR 4.43). ΔpH flags acute deterioration in patients who otherwise look stable.
Prehospital transfusion requirements in severe trauma: A multicenter, retrospective estimate of requirements
In a multicenter Paris-region cohort, ~1 in 5 severe trauma patients (ABC ≥2 and >20 min prehospital time) would have qualified for prehospital blood transfusion — arguing that PHT should be a routine capability, not a rarity, in advanced trauma systems.
Stress displacement and surgical benefit in Beckmann 7-9 pelvic ring injuries: A retrospective multicenter analysis
Across 8 Level I centers, for stability-indeterminate LC1 (Beckmann 7-9) pelvic injuries, surgery was associated with fewer early composite adverse events overall, and notably in the 12-16 mm stress-displacement stratum (NNT ~2.5). Authors stress the finding is statistically fragile and hypothesis-generating, needing prospective validation.
Surgical management of complex humeral shaft fractures (AO/OTA 12-C): A multicenter comparison of open plating, MIPO, and intramedullary nailing
In 75 complex (12-C) humeral shaft fractures, ORIF, MIPO and IM nailing all achieved acceptable union (84-93%) and comparable functional scores. MIPO trended toward fewer complications and less operative burden; IM nailing trended toward more nonunion/malunion. Underpowered — fixation choice should be tailored to fracture morphology and surgeon experience.
Birmingham Eye Trauma Terminology — Extension from Lebanon (BETT-XL): multi-center validation in modern warfare
Standard BETT could not classify ~25-34% of severe blast-related eye injuries from the 2024 Lebanon pager explosions; the proposed BETT-XL adds traumatic evisceration, luxation, avulsion and exenteration categories to better characterise conflict ocular trauma.
Early renal perfusion phenotypes and renal recovery in critically ill patients with or at risk for acute kidney injury: a prospective multicenter cohort study
Serial Doppler-derived semi-quantitative renal perfusion identified sustained-high vs sustained-low phenotypes; sustained-high perfusion was associated with less persistent AKI, faster recovery, and less RRT. Renal resistive index did not discriminate outcomes. Exploratory bedside physiology — needs external validation.
Clinical Pearl4 papers
External validity limitations of RCTs cited in adult critical care clinical practice guidelines (2015-2020)
Only 8.7% of RCTs underpinning critical care guidelines had no exclusion criteria; pregnancy, moribund status, renal/liver dysfunction and TBI were commonly excluded — a reminder to weigh external validity before applying guideline recommendations to complex ICU patients.
Monitoring of breathing effort through pressure-time product measurement using airway occlusion pressure (PTP study)
A non-invasive index combining airway occlusion pressure, inspiratory time and respiratory rate closely tracked esophageal pressure-time product and detected dangerously high or low inspiratory effort (AUC 0.91) in mechanically ventilated patients — a bedside alternative to invasive esophageal manometry for titrating support and limiting VILI/diaphragm injury.
Age-specific TBSA thresholds for pediatric burn complications: A 13-year single-center inpatient retrospective cohort
In 942 admitted pediatric burns, age-specific TBSA cutoffs stratified risk of ICU transfer, surgery and infection: consider earlier ICU review at ~8-10% adjusted TBSA in toddlers and ~15% in school-age/adolescents, with depth/site-driven surgical review (hands, joints, perineum, buttocks) and vigilance for persistent fever or delayed presentation.
Vancomycin optimised dosing regimens for critically ill patients receiving renal replacement therapy
In ICU patients on CRRT or sustained low-efficiency dialysis (many also on ECMO), actual body weight plus RRT intensity and duration were the main determinants of vancomycin exposure. Monte Carlo simulation produced an optimised dosing nomogram to hit the MRSA efficacy target (AUC/MIC ≥400) while staying below the toxicity threshold (AUC ≥700).