Acute and Critical Care

Original Articles

CPR/Resuscitation
Initial arterial pH predicts survival of out-of-hospital cardiac arrest in South Korea: Daun Jeong, Sang Do Shin, Tae Gun Shin, Gun Tak Lee, Jong Eun Park, Sung Yeon Hwang, Jin-Ho Choi; Acute Crit Care. 2025;40(3):444-451. Published online August 29, 2025; DOI: https://doi.org/10.4266/acc.001050

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Abstract PDF Supplementary Material: Background
Arterial pH reflects both metabolic and respiratory distress in cardiac arrest and has prognostic implications. However, it was excluded from the 2024 update of the Utstein out-of-hospital cardiac arrest (OHCA) registry template. We investigated the rationale for including arterial pH into models predicting clinical outcomes. Methods: Data were sourced from the Korean Cardiac Arrest Research Consortium, a nationwide OHCA registry (NCT03222999). Prediction models were constructed using logistic regression, random forest, and eXtreme Gradient Boosting frameworks. Each framework included three model types: pH, low-flow time, and combined models. Then the area under the receiver operating characteristic curve (AUROC) of each predicting model was compared. The primary outcome was 30- day death or neurologically unfavorable status (cerebral performance category ≥3). Results: Among the 15,765 patients analyzed, 92.2% experienced death or unfavorable neurological outcomes. The predicting performance of the models including pH (AUROC, 0.92–0.94) were comparable to the models including low-flow time in all frameworks (0.93–0.94) (all P>0.05). Inclusion of pH into low-flow time models consistently showed higher AUROCs than individual models in all frameworks (AUROC, 0.93–0.95; all P<0.05). Conclusions: The predicting performance of models including arterial pH was comparable to models including low-flow time, and addition of arterial pH into low-flow time models could increase the performance of the models. Key Words: blood pH; hydrogen-ion con

Epidemiology
Comparing single-patient and multi-patient room intensive care units: a multicenter cohort study on architectural differences and clinical significance in South Korea: Daun Jeong, Donghyoun Lee, Kyoung Won Yoon, Hyo Jin Kim, Sun Young Choi, Chi-Min Park; Acute Crit Care. 2025;40(2):160-170. Published online May 28, 2025; DOI: https://doi.org/10.4266/acc.004968

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1 Web of Science
2 Crossref

Background
The design of intensive care units (ICUs) is increasingly acknowledged as a crucial factor affecting patient outcomes. Transitioning from multi-bed patient rooms (MPRs) to single-bed patient rooms (SPRs) aims to improve infection control, patient privacy, and quality of care. However, concerns remain regarding potential patient isolation and reduced staff situational awareness. This study aims to evaluate clinical outcomes in SPR-structured ICUs compared to mixed SPR and MPR ICUs.
Methods
This multicenter retrospective cohort study was conducted across three university-affiliated tertiary hospitals between April 2022 and August 2023. The study population included ICU patients aged ≥18 years, excluding those admitted to cardiac and neonatal ICUs. Outcomes assessed included ICU mortality and severity scores based on Simplified Acute Physiology Score 3 and Acute Physiology and Chronic Health Evaluation II scores.
Results
This study included 3,179 ICU patients across three sites: site A consisted exclusively of SPRs, while sites B and C had mixed SPR and MPR arrangements. ICU mortality rates were 8.3%, 15.2%, and 9.7% for sites A, B, and C, respectively (P<0.001). Propensity score matching and logistic regression analysis demonstrated that SPRs were associated with significantly reduced ICU mortality (adjusted odds ratio, 0.54; 95% CI, 0.40–0.73).
Conclusions
SPRs were associated with a protective effect, reducing ICU mortality. Clinical outcomes in ICUs appear to be influenced by structural design improvements alongside other clinical factors.

Citations

Citations to this article as recorded by

Single Versus Shared ICU Rooms and the Risk of Unplanned Extubation: A Real-World Cohort Showing Tube Displacement as an Early Signal
Beatriz Amaral Costa Savino, Danilo Franco Guidi, Silvia Helena Ferraz Planard, Viviane Perin, Bruno Augusto Goulart Campos
Cureus.2026;[Epub] CrossRef
Survival improvement through well-designed intensive care unit architecture
Dong Hyun Lee
Acute and Critical Care.2025; 40(2): 349. CrossRef

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