Markos G. Kashiouris

Background Ambient artificial intelligence (AI) documentation systems have emerged as a potential solution to clerical burden in medicine, yet evidence in emergency settings remains limited. Objectives The objective of this study is to evaluate the ambient AI on patient experience, documentation efficiency, clinician workload, and clinical throughput across a large emergency department (ED) network. Methods This is a retrospective, observational cohort study of ambient AI rollout across 14 EDs (May 2024–June 2025). Clinicians applied the tool on a voluntary basis and contributed both AI-assisted and conventional notes. Outcomes included patient-reported experience, active editing time, disposition-to-completion time, copied-forward content, and on-time note completion. Clinician workload was assessed with pre- and postimplementation surveys including the NASA Task Load Index (TLX). Results Ambient AI was used in 8.6% of 315,242 ED clinical notes. AI use was associated with higher top-box ratings for clinician listening (82.0 vs. 76.6%; odds ratio [OR]: 1.39; p = 0.003) but not likelihood to recommend (77.6 vs. 75.0%; OR: 1.15; p = 0.185). Within-clinician paired analysis showed no difference in active editing time between AI and conventional notes (median difference: +0.17 min; 95% confidence interval [CI]: −1.00 to +1.55; p = 0.349), and clinicians typed 722 fewer characters per AI-assisted note. Documentation finalized 3.4 h earlier for admitted and 6.0 h earlier for discharged patients; the disposition-to-completion difference was +5.06 h (p = 0.337), reflecting attenuation of early-adopter’s advantage. AI-assisted notes were half as likely to include copied content (9.4 vs. 18.3%; OR: 0.46; p < 0.001). NASA-TLX workload decreased by 40.2 points (95% CI: 30.4–50.1). Conclusion Ambient AI documentation was associated with improved patient-reported listening, earlier note completion, reduced copied-forward content, and lower clinician-perceived cognitive burden, without altering active editing time per note. These findings suggest a scalable tool for reducing clerical burden in high-throughput emergency care, while introducing new responsibilities for clinicians to review, edit, and sign machine-generated notes.

Background: Rapid response teams (RRTs) have impacted the management of decompensating patients, potentially improving mortality. Few studies address the significance of RRT timing relative to hospital admission. We aimed to identify outcomes of adult patients who trigger immediate RRT activation, defined as within 4 hours of admission and compare with RRT later in admission or do not require RRT activation, and identify risk factors that predispose toward immediate RRT activation. Methods: A retrospective case-control study was performed using an RRT activation database, comprising 201,783 adult inpatients at an urban, academic, tertiary care hospital. This group was subdivided by timing of RRT activation regarding admission: within the first 4 hours (immediate RRT), between 4 and 24 hours (early RRT), and after 24 hours (late RRT). The primary outcome was 28-day all-cause mortality. Individuals triggering an immediate RRT were compared with demographically matched controls. Mortality was adjusted for age, Quick Systemic Organ Failure Assessment score, intensive care unit admission, and Elixhauser Comorbidity Index. Results: Patients with immediate RRT had adjusted 28-day all-cause mortality of 7.1% (95% confidence interval [CI], 5.6%–8.5%) and death odds ratio of 3.27 (95% CI, 2.5–4.3) compared with those who did not (mortality, 2.9%; 95%CI, 2.8%–2.9%; P < 0.0001). Patients triggering an immediate RRT were more likely to be Black, be older, and have higher Quick Systemic Organ Failure Assessment scores than those who did not trigger RRT activation. Conclusions: In this cohort, patients who require immediate RRT experienced higher 28-day all-cause mortality, potentially because of evolving or unrecognized critical illness. Further exploring this phenomenon may create opportunities for improved patient safety.

(1) Background: The disease-modifying mechanisms of high-dose intravenous vitamin C (HDIVC) in sepsis induced acute respiratory distress syndrome (ARDS) is unclear. (2) Methods: We performed a post hoc study of plasma biomarkers from subjects enrolled in the randomized placebo-controlled trial CITRIS-ALI. We explored the effects of HDIVC on cell-free DNA (cfDNA) and syndecan-1, surrogates for neutrophil extracellular trap (NET) formation and degradation of the endothelial glycocalyx, respectively. (3) Results: In 167 study subjects, baseline cfDNA levels in HDIVC (84 subjects) and placebo (83 subjects) were 2.18 ng/µL (SD 4.20 ng/µL) and 2.65 ng/µL (SD 3.87 ng/µL), respectively, p = 0.45. At 48-h, the cfDNA reduction was 1.02 ng/µL greater in HDIVC than placebo, p = 0.05. Mean baseline syndecan-1 levels in HDIVC and placebo were 9.49 ng/mL (SD 5.57 ng/mL) and 10.83 ng/mL (SD 5.95 ng/mL), respectively, p = 0.14. At 48 h, placebo subjects exhibited a 1.53 ng/mL (95% CI, 0.96 to 2.11) increase in syndecan-1 vs. 0.75 ng/mL (95% CI, 0.21 to 1.29, p = 0.05), in HDIVC subjects. (4) Conclusions: HDIVC infusion attenuated cell-free DNA and syndecan-1, biomarkers associated with sepsis-induced ARDS. Improvement of these biomarkers suggests amelioration of NETosis and shedding of the vascular endothelial glycocalyx, respectively.

BACKGROUND: There is limited evidence on the clinical importance of the endotracheal tube (ETT) size selection in patients with status asthmaticus who require invasive mechanical ventilation. We set out to explore the clinical outcomes of different ETT internal diameter sizes in subjects mechanically ventilated with status asthmaticus. METHODS: This was a retrospective study of intubated and non-intubated adults admitted for status asthmaticus between 2014–2021. We examined in-hospital mortality across subgroups with different ETT sizes, as well as non-intubated subjects, using logistic and generalized linear mixed-effects models. We adjusted for demographics, Charlson comorbidities, the first Sequential Organ Failure Assessment score, intubating personnel and setting, COVID-19, and the first P aCO ₂ . Finally, we calculated the post-estimation predictions of mortality. RESULTS: We enrolled subjects from 964 status asthmaticus admissions. The average age was 46.9 (SD 14.5) y; 63.5% of the encounters were women and 80.6% were Black. Approximately 72% of subjects (690) were not intubated. Twenty-eight percent (275) required endotracheal intubation, of which 3.3% (32) had a 7.0 mm or smaller ETT (ETT ≤ 7 group), 16.5% (159) a 7.5 mm ETT (ETT ≤ 7.5 group), and 8.6% (83) an 8.0 mm or larger ETT (ETT ≥ 8 group). The adjusted mortality was 26.7% (95% CI 13.2–40.2) for the ETT ≤ 7 group versus 14.3% ([(95% CI 6.9–21.7%], P = .04) for ETT ≤ 7.5 group and 11.0% ([95% CI 4.4–17.5], P = .02) for ETT ≥ 8 group, respectively. CONCLUSIONS: Intubated subjects with status asthmaticus had higher mortality than non-intubated subjects. Intubated subjects had incrementally higher observed mortality with smaller ETT sizes. Physiologic mechanisms can support this dose-response relationship

Background: The current guidelines recommend targeted temperature management (TTM) as part of the post-resuscitation care for comatose patients following out-of-hospital cardiac arrest. These recommendations are based on the weak evidence of benefit seen in the early clinical trials. Recent large multicentered trials have failed to show a meaningful clinical benefit of hypothermia, unlike the earlier studies. Thus, to fully appraise the available data, we sought to perform this systematic review and meta-analysis of randomized controlled trials. Methods: We searched four databases for randomized controlled trials comparing therapeutic hypothermia (32–34 °C) with normothermia (≥36 °C with control of fever) in adult patients resuscitated after out-of-hospital cardiac arrest. Independent reviewers did the title and abstract screening, full-text screening, and extraction. The primary outcome was mortality six months after cardiac arrest, and secondary outcomes were neurological outcomes and adverse effects. Relevance for patients Six randomized controlled trials were included in this review. There was no significant difference between the hypothermia and normothermia groups in mortality till 6 months follow up after out-of-hospital cardiac arrest (OR 0.88, 95% CI 0.67–1.16; n = 3243; I² = 51%), or favorable neurological outcome (OR 1.31, 95% CI 0.93–1.84; n = 3091; I² = 68%). Rates of arrhythmias were notably higher in the hypothermia group than the normothermia group (OR 1.43, 95% CI 1.20–1.71; n = 3029; I² = 4%). However, odds for development of pneumonia showed no significant differences across two groups (OR 1.13, 95% CI 0.98–1.31; n = 3056; I² = 22%). Therefore, targeted hypothermia with a target temperature of 32–34 °C does not provide mortality benefit or better neurological outcome in patients resuscitated after the out-of-hospital cardiac arrest when compared with normothermia.

Background: Vitamin C is a water-soluble antioxidant vitamin. Oxidative stress and its markers, along with inflammatory markers, are high during critical illness. Due to conflicting results of the published literature regarding the efficacy of vitamin C in critically ill patients, and especially the concerns for nephrotoxicity raised by some case reports, this meta-analysis was carried out to appraise the evidence and affirmation regarding the role of vitamin C in critically ill patients. Methods: We searched the database thoroughly to collect relevant studies that assessed intravenous vitamin C use in critically ill patients published until 25 February 2021. We included randomized controlled trials and observational studies with 20 or more critically ill patients who have received intravenous ascorbic acid (vitamin C). After screening 18,312 studies from different databases, 53 were included in our narrative synthesis, and 48 were included in the meta-analysis. We used the Covidence software for screening of the retrieved literature. Review Manager (RevMan) 5.4 was used for the pooling of data and Odds Ratios (OR) and Mean difference (MD) as measures of effects with a 95% confidence interval to assess for explanatory variables. Results: Pooling data from 33 studies for overall hospital mortality outcomes using a random-effect model showed a 19% reduction in odds of mortality among the vitamin C group (OR, 0.81; 95% CI, 0.66–0.98). Length of hospital stay (LOS), mortality at 28/30 days, ICU mortality, new-onset AKI and Renal Replacement Therapy (RRT) for AKI did not differ significantly across the two groups. Analysis of data from 30 studies reporting ICU stay disclosed 0.76 fewer ICU days in the vitamin C group than the placebo/standard of care (SOC) group (95% CI, −1.34 to −0.19). This significance for shortening ICU stay persisted even when considering RCTs only in the analysis (MD, −0.70; 95% CI, −1.39 to −0.02). Conclusion: Treatment of critically ill patients with intravenous vitamin C was relatively safe with no significant difference in adverse renal events and decreased in-hospital mortality. The use of vitamin C showed a significant reduction in the length of ICU stays in critically ill patients.