Evidence map›Paper›PMID 35507352›Full record

SynthesisJAMA cardiology2022

Long-term Survival After Out-of-Hospital Cardiac Arrest: A Systematic Review and Meta-analysis.

Simon A Amacher, Chantal Bohren, René Blatter, Christoph Becker, Katharina Beck, Jonas Mueller, Nina Loretz, Sebastian Gross, Kai Tisljar, Raoul Sutter and 3 more

Open access · greenAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in JAMA cardiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed, 3 pooled it
16.6field-weighted citation impact, top 1% of its field
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

43 citing papers in PubMed, 3 syntheses or guidelines pooled it, 73 citations in OpenAlex.

  1. Pooled it
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  12. Prevalence and prognostic relevance of abnormal liver function tests in critically ill patients with cardiac arrest.Clinical research in cardiology : official journal of the German Cardiac Society · 2026
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  14. Cortical OProceedings of the National Academy of Sciences of the United States of America · 2026
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

13 authors at 2 institutions in 1 country.

Simon A AmacherDepartment of Intensive Care, University Hospital Basel, Basel, Switzerland.
Chantal BohrenDepartment of Medical Communication and Psychosomatic Medicine, University Hospital Basel, Basel, Switzerland.
René BlatterDepartment of Medical Communication and Psychosomatic Medicine, University Hospital Basel, Basel, Switzerland.
Christoph BeckerDepartment of Medical Communication and Psychosomatic Medicine, University Hospital Basel, Basel, Switzerland.
Katharina BeckDepartment of Medical Communication and Psychosomatic Medicine, University Hospital Basel, Basel, Switzerland.
Jonas MuellerDepartment of Medical Communication and Psychosomatic Medicine, University Hospital Basel, Basel, Switzerland.
Nina LoretzDepartment of Medical Communication and Psychosomatic Medicine, University Hospital Basel, Basel, Switzerland.
Sebastian GrossDepartment of Medical Communication and Psychosomatic Medicine, University Hospital Basel, Basel, Switzerland.
Kai TisljarDepartment of Intensive Care, University Hospital Basel, Basel, Switzerland.
Raoul SutterDepartment of Intensive Care, University Hospital Basel, Basel, Switzerland.
Christian Appenzeller-HerzogMedical Faculty, University of Basel, Basel, Switzerland.
Stephan MarschDepartment of Intensive Care, University Hospital Basel, Basel, Switzerland.
Sabina HunzikerDepartment of Medical Communication and Psychosomatic Medicine, University Hospital Basel, Basel, Switzerland.
University Hospital of Basel · CHUniversity of Basel · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Importance: Data on long-term survival beyond 12 months after out-of-hospital cardiac arrest (OHCA) of a presumed cardiac cause are scarce. Objective: To investigate the long-term survival of adult patients after surviving the initial hospital stay for an OHCA. Data Sources: A systematic search of the EMBASE and MEDLINE databases was performed from database inception to March 25, 2021. Study Selection: Clinical studies reporting long-term survival after OHCA were selected based on predefined inclusion and exclusion criteria according to a preregistered study protocol. Data Extraction and Synthesis: Patient data were reconstructed from Kaplan-Meier curves using an iterative algorithm and then pooled to generate survival curves. As a separate analysis, an aggregate data meta-analysis was performed. Main Outcomes and Measures: The primary outcome was long-term survival (>12 months) after OHCA for patients surviving to hospital discharge or 30 days after OHCA. Results: The search identified 15 347 reports, of which 21 studies (11 800 patients) were included in the Kaplan-Meier-based meta-analysis and 33 studies (16 933 patients) in an aggregate data meta-analysis. In the Kaplan-Meier-based analysis, the median survival time for patients surviving to hospital discharge was 5.0 years (IQR, 2.3-7.9 years). The estimated survival rates were 82.8% (95% CI, 81.9%-83.7%) at 3 years, 77.0% (95% CI, 75.9%-78.0%) at 5 years, 63.9% (95% CI, 62.3%-65.4%) at 10 years, and 57.5% (95% CI, 54.8%-60.1%) at 15 years. Compared with patients with a nonshockable initial rhythm, patients with a shockable rhythm had a lower risk of long-term mortality (hazard ratio, 0.30; 95% CI, 0.23-0.39; P < .001). Different analyses, including an aggregate data meta-analysis, confirmed these results. Conclusions and Relevance: In this comprehensive systematic review and meta-analysis, long-term survival after 10 years in patients surviving the initial hospital stay after OHCA was between 62% and 64%. Additional research is needed to understand and improve the long-term survival in this vulnerable patient population.

Indexed as

Cardiopulmonary ResuscitationOut-of-Hospital Cardiac ArrestAdultHumansPatient DischargeSurvival Rate

Identifiers

PMID35507352
PMCPMC9069345
OpenAlexW4225404510

What OpenQuestion holds

Textmetadata
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.