A recent Emergency Medicine digest,
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Study Type: Single-centre retrospective cohort study (Japanese tertiary hospital; 3127 ED visits, patients ≥65 years).

Key Question: Is frailty (CFS ≥5) associated with hospitalisation after ED evaluation within triage urgency categories, and does this vary by category?

Key Findings:

• 1526/3127 visits (49%) resulted in admission or acute-care transfer.
• Adjusted ORs for frailty: JTAS 2 1.00 (95% CI 0.65–1.55); JTAS 3 1.54 (1.19–1.99); JTAS 4/5 2.01 (1.13–3.58). JTAS 1 could not be estimated (quasi-complete separation).
• Global frailty-by-triage interaction was non-significant (p=0.091), so variation across categories is unproven.

Clinical Relevance: Frailty appears to influence admission decisions beyond triage urgency in lower-acuity older patients, which is relevant to NHS discussions on frailty-informed pathways and same-day emergency care.

Limitations: Retrospective single-centre design with complete-case analysis and Japanese-specific triage and admission practices limits generalisability to UK settings.

Study Type: Narrative review with proposed diagnostic algorithm (not a systematic review; no search methodology or pooled data reported in abstract).

Key Question: How can emergency clinicians distinguish normal postoperative inflammation from superficial surgical site infection or early periprosthetic joint infection (PJI) within 30 days of total joint arthroplasty?

Key Findings:

• Normal early healing produces inflammatory marker and synovial fluid changes that often exceed thresholds validated for chronic PJI, so standard cut-offs risk false positives.
• Early PJI diagnosis needs time-dependent interpretation of synovial fluid, whereas superficial SSI remains a clinical diagnosis.
• The authors propose a structured algorithm intended to reduce unnecessary testing and cost; no diagnostic accuracy or outcome data are given in the abstract.

Clinical Relevance: Useful for UK EDs seeing early post-arthroplasty presentations, where chronic-PJI thresholds could prompt unnecessary aspiration or referral, though the framework is US-oriented (e.g. TEAM bundled payments) and needs adapting to local orthopaedic pathways.

Limitations: The algorithm appears to be an expert synthesis without prospective validation, and the abstract does not report its sensitivity, specificity, or safety outcomes.

Study Type: Prospective single-cohort feasibility study (US ED setting).

Key Question: Is smartphone-based assessment of cognition and physical function feasible in older adults attending the ED after a fall?

Key Findings:

• Of 196 patients (mean age 78.2, 68% women), 77% attempted at least one digital assessment. Among those attempting, cognitive test completion was 68-87%, and was associated with absence of cognitive impairment (p ≤ 0.01).
• Physical function test completion was only 18-20%, mainly due to safety concerns, pain and injury; completion was associated with better Barthel Index scores and non-use of mobility aids.
• Common barriers to cognitive testing were lack of glasses, feeling unwell and technology problems.

Clinical Relevance: Brief digital cognitive screening may be deliverable in busy UK ED falls pathways, but in-department digital physical assessment appears impractical.

Limitations: Feasibility only, with no validation against clinical outcomes, and the US single-setting sample may limit applicability to NHS EDs.

Study Type: Single case report

Key Question: What is the presentation and management of acute kidney injury following djenkol bean ingestion in a non-endemic setting?

Key Findings:

• A 10-year-old boy presented with abdominal pain, frank haematuria and AKI the day after eating djenkol beans; other causes of AKI were excluded (no specific creatinine or urinalysis values given in the abstract).
• Treated with IV bicarbonate infusion and overnight admission; renal function improved, haematuria resolved, and he was discharged.
• Reported as the first US case of djenkolism.

Clinical Relevance: Djenkolism is a rare differential for unexplained AKI with haematuria and abdominal pain in patients with Southeast Asian dietary exposure, so a food history is worth taking in diverse UK populations.

Limitations: A single case without quantified renal indices or follow-up cannot establish treatment efficacy; recovery may have occurred spontaneously.

Study Type: Expert commentary/opinion piece (dissenting critique of guidelines). Not original research.

Key Question: Are the most influential recommendations in the 2026 Surviving Sepsis Campaign (SSC) guidelines, and the protocolised bundles built on them, supported by the best available evidence?

Key Findings:

• The abstract reports no data, effect sizes, or specific recommendations challenged.
• The authors argue successive SSC iterations have drifted from optimal critical care and shifted from evidence-based guidance to mandated bundles that define "standard of care".
• They offer a rebuttal of the most controversial recommendations and propose alternatives to protocolised, metric-driven sepsis care. The specifics are not stated in the abstract.

Clinical Relevance: SSC-derived bundles and time-based metrics influence UK sepsis pathways (e.g., NICE NG51 and "Sepsis Six"), so a credible challenge may inform local protocol review and audit practice.

Limitations: The abstract gives no detail on which recommendations are disputed or the evidence cited, so the strength of the critique can't be assessed without the full text.

Study Type: Systematic review and single-arm meta-analysis (7 studies pooled; 8 in qualitative synthesis), predominantly observational.

Key Question: How effective and safe is dual simultaneous external DC cardioversion in adults with refractory AF after failed single-defibrillator cardioversion?

Key Findings:

• Pooled acute cardioversion success was 79% (95% CI 74-83%; I² = 0%).
• Ventricular arrhythmias occurred in 1% (95% CI 0-4%); transient bradyarrhythmia in 13% (95% CI 4-31%); no deaths reported.
• Exploratory subgroups showed no significant difference in success by pad configuration or number of prior failed single-defibrillator attempts.

Clinical Relevance: This is a possible rescue option for ED patients with AF refractory to standard cardioversion (particularly those with high transthoracic impedance), but it is not yet supported for routine UK practice.

Limitations: Without a comparator arm and with heterogeneous procedures and few contemporary biphasic data, the review cannot establish comparative efficacy, safety, or optimal patient selection.

Study Type: Multicentre retrospective cohort study (TriNetX database, US EDs, 2010–2024), propensity-matched.

Key Question: Is there a graded association between initial serum potassium and 48-hour adverse outcomes in non-dialysis ED patients?

Key Findings:

• Composite of cardiac arrest, VT or VF within 48 h rose from 3.05% (K⁺ 5.5–5.99) to 6.68% (≥7.0 mmol/L), versus 0.77–0.90% in matched normokalaemic controls (RR 3.97–8.08).
• 48-hour mortality rose from 2.04% to 5.79% across strata, with similarly higher ICU admission and ventilation rates.
• At K⁺ 5.01–5.49, composite risk was 1.52% vs 0.85% (RR 1.79, 95% CI 1.75–1.83), but isolated VT/VF was not increased.

Clinical Relevance: Supports using initial potassium as a risk-stratification marker in UK EDs, though it does not guide treatment thresholds.

Limitations: Retrospective design with residual confounding likely; the authors state causation and dose-response are not established.

Study Type: Retrospective comparative study across two US academic emergency departments (790 patients).

Key Question: Does substituting the contrast agent, rather than giving corticosteroid premedication, reduce ED time-to-CT and time-to-discharge in patients with a prior mild allergic-like reaction to iodinated contrast?

Key Findings:

• Time from CT order to scan was 4.28 h shorter with agent substitution (n=63) than with steroid premedication (n=727) (95% CI 3.85-4.72 h).
• Time to ED discharge was 3.97 h shorter (95% CI 2.72-5.30 h).
• No breakthrough reactions occurred in the substitution group (95% CI 0-5.7%).

Clinical Relevance: Standard 5-13 h premedication regimens substantially delay imaging and prolong ED stay, which matters for NHS flow and 4-hour performance, though substitution requires knowing the culprit agent.

Limitations: Non-randomised, with allocation determined by whether the culprit agent was known (confounding), and the small substitution group gives a wide upper confidence limit for breakthrough reactions; the study was not designed to compare safety.