Evidence map›Paper›PMID 40878992›Full record

Observational studyJournal of the American Heart Association2025

Clinical Prediction Score for Patients With Initial Nonshockable Rhythm Receiving Extracorporeal Cardiopulmonary Resuscitation for Out-of-Hospital Cardiac Arrest: Development and Internal Validation.

Akira Kawauchi, Yohei Okada, Makoto Aoki, Akihiko Inoue, Toru Hifumi, Tetsuya Sakamoto, Yasuhiro Kuroda, Mitsunobu Nakamura, SAVE‐J II Study Group

Abstract readObservational StudyMulticenter StudyValidation Study
In one paragraph

Observational study in Journal of the American Heart Association, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors.

Akira KawauchiDepartment of Critical Care and Emergency Medicine Japanese Red Cross Maebashi Hospital Maebashi Gunma Japan.ORCID 0000-0003-2934-3333
Yohei OkadaHealth Services and Systems Research Duke-NUS Medical School Singapore.ORCID 0000-0002-2266-476X
Makoto AokiDivision of Traumatology, Research Institute National Defense Medical College Saitama Japan.ORCID 0000-0001-8239-8822
Akihiko InoueDepartment of Emergency and Critical Care Medicine Hyogo Emergency Medical Center Kobe Japan.ORCID 0000-0002-9627-3702
Toru HifumiDepartment of Emergency and Critical Care Medicine St. Luke's International Hospital Tokyo Japan.ORCID 0000-0003-3581-0890
Tetsuya SakamotoDepartment of Emergency Medicine Teikyo University School of Medicine Tokyo Japan.ORCID 0000-0002-5070-4343
Yasuhiro KurodaDepartment of Emergency, Disaster and Critical Care Medicine Kagawa University Hospital Kita Kagawa Japan.ORCID 0000-0002-7562-3187
Mitsunobu NakamuraDepartment of Critical Care and Emergency Medicine Japanese Red Cross Maebashi Hospital Maebashi Gunma Japan.ORCID 0009-0006-2084-9513
SAVE‐J II Study Group

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSelecting appropriate patients for extracorporeal cardiopulmonary resuscitation (ECPR) in cases of out-of-hospital cardiac arrest remains challenging, particularly for those with initial nonshockable rhythms. Our aim is to develop a prediction score to identify suitable ECPR candidates in patients with initial nonshockable rhythm.

methodsThe data were sourced from the SAVE-J II (Study of Advanced Life Support for Ventricular Fibrillation With Extracorporeal Circulation in Japan II) study, a retrospective multicenter observational study in Japan. Included were adult patients with out-of-hospital cardiac arrest who underwent ECPR with initial pulseless electrical activity or asystole. The primary outcome was survival to hospital discharge. We developed a prediction score, employing logistic regression analysis and internally validating it with 1000 bootstrap samples. The performance of the score in predicting a favorable neurological outcome at discharge was also evaluated.

resultsAmong 648 eligible patients, 86 (13.3%) survived to hospital discharge. The median age was 60.5 years, 75.9% (492) were male, and 74.4% (482) had pulseless electrical activity as the initial rhythm. Three clinical predictors for the START-ECPR Score (Signs of Life, Transient ROSC, Not Asystole Rhythm to ECPR Score) were identified: shockable rhythm or pulseless electrical activity at hospital arrival, transient return of spontaneous circulation before hospital arrival, and signs of life at hospital arrival. Survival rates were 4.4% (7/159) for a score of 0, 10.7% (38/356) for a score of 1, and 30.8% (39/130) for scores of 2 to -3. The bias-corrected C-index for the score was 0.696. For predicting favorable neurologic outcomes at discharge, the C-index was 0.761.

conclusionsWe developed a straightforward 3-factor prediction score for predicting survival to hospital discharge and favorable neurologic outcomes in patients with out-of-hospital cardiac arrest with initial nonshockable rhythms receiving ECPR.

Indexed as

Cardiopulmonary ResuscitationExtracorporeal Membrane OxygenationOut-of-Hospital Cardiac ArrestAgedFemaleHumansJapanMaleMiddle AgedPatient DischargePredictive Value of TestsRetrospective StudiesRisk AssessmentTreatment OutcomeECPRinitial nonshockable rhythmOHCAprediction score

Identifiers

PMID40878992
PMCPMC12553411

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

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.