ArticleOpen access emergency medicine : OAEM2026
Prehospital Blood pH Testing and Survival in Non-Traumatic Out-of-Hospital Cardiac Arrest: Insights from a Thai EMS Unit.
Article in Open access emergency medicine : OAEM, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: Point-of-care testing (POCT) for blood gas and electrolyte analysis supports the identification of reversible causes of out-of-hospital cardiac arrest (OHCA). In 2021, the Ramathibodi Emergency Operation (RAMA EMO) unit became the first emergency medical service team in Thailand to apply POCT in its prehospital resuscitation protocol. Prior to this implementation, POCT had not been used in prehospital OHCA care in Thailand, so its clinical impact was unknown. The aim of this study was to evaluate the association between initial prehospital POCT-measured pH and return of spontaneous circulation (ROSC) at emergency department (ED) admission in a Thai EMS-managed OHCA cohort. Methods: This single-center ambispective cohort study analyzed adult non-traumatic OHCA patients managed by the RAMA EMO unit. Prehospital POCT was used in all eligible OHCA cases after the initiation of advanced resuscitation. Multivariable analysis was employed to assess the association between blood pH and ROSC at ED admission. Results: A total of 148 patients were included, and ROSC at ED admission occurred in 25% of the cases. Higher prehospital pH was significantly associated with ROSC at ED admission. In ROC analysis, a pH cutoff of ≥ 7.1 demonstrated the optimal discriminative performance. In multivariable logistic regression, pH ≥ 7.1 remained independently associated with ROSC at ED admission (adjusted odds ratio 3.68, 95% CI 1.37-9.89; P = 0.010). Internal bootstrap validation confirmed the robustness of this association. Conclusion: Prehospital POCT blood gas analysis provides valuable prognostic information regarding OHCA, with a pH ≥ 7.1 serving as an independent predictor of ROSC at ED admission. Bootstrap validation supports the stability and reliability of this cutoff. The integration of POCT into EMS protocols may enhance early clinical decision-making during resuscitation. Further external validation is warranted to confirm these findings.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.