Evidence map›Paper›PMID 32967879›Full record

Observational studyBMJ open2020

In out-of-hospital cardiac arrest, is the positioning of victims by bystanders adequate for CPR? A cohort study.

Patrick Wagner, Sebastian Schloesser, Julia Braun, Hans-Richard Arntz, Jan Breckwoldt

Abstract readObservational Study
In one paragraph

Observational study in BMJ open, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing 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

8 citing papers in PubMed.

  1. Trial
  2. Trial
  3. Article
  4. Article
  5. Article
  6. Article
  7. Cardiac arrest: An interdisciplinary scoping review of clinical literature from 2020.Journal of the American College of Emergency Physicians open · 2022
    Article
  8. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Patrick WagnerAnesthesiology, Charité-Medical University of Berlin, Berlin, Germany.
Sebastian SchloesserAnaesthesiology, Helios Klinikum Emil von Behring, Berlin-Zehlendorf, Berlin, Germany.
Julia BraunEpidemiology, Biostatistics and Prevention Institute (EBPI), University of Zurich, Zurich, Switzerland.
Hans-Richard ArntzBenjamin Franklin Medical Center, Department of Cardiology, Charite Medical Faculty Berlin, Berlin, Germany.
Jan BreckwoldtUniversity Hospital Zurich, Institute of Anesthesiology, University of Zurich Faculty of Medicine, Zurich, Switzerland jan.breckwoldt@usz.ch.ORCID 0000-0003-1716-1970

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesOutcome from out-of-hospital cardiac arrest (OHCA) highly depends on bystander cardiopulmonary resuscitation (CPR) with high-quality chest compressions (CCs). Precondition is a supine position of the victim on a firm surface. Until now, no study has systematically analysed whether bystanders of OHCA apply appropriate positions to victims and whether the position is associated with a particular outcome.

designProspective observational cohort study.

settingMetropolitan emergency medical services (EMS) serving a population of 400 000; dispatcher-assisted CPR was implemented. We obtained information from the first EMS vehicle arriving on scene and matched this with data from semi-structured interviews with witnesses of the arrest.

participantsBystanders of all OHCAs occurring during a 12-month period (July 2006-July 2007). From 201 eligible missions, 200 missions were fully reported by EMS. Data from 138 bystander interviews were included. PRIMARY AND SECONDARY OUTCOME MEASURES: Proportion of positions suitable for effective CCs; related survival with favourable neurological outcome at 3 months.

resultsPositioning of victims at EMS arrival was 'supine on firm surface' in 64 cases (32.0%), 'recovery position (RP)' in 37 cases (18.5%) and other positions unsuitable for CCs in 99 cases (49.5%). Survival with favourable outcome at 3 months was 17.2% when 'supine position' had been applied, 13.5% with 'RP' and 6.1% with 'other positions unsuitable for CCs'; a statistically significant association could not be shown (p=0.740, Fisher's exact test). However, after 'effective CCs' favourable outcome at 3 months was 32.0% compared with 5.3% if no actions were taken. The OR was 5.87 (p=0.02).

conclusionIn OHCA, two-thirds of all victims were found in positions not suitable for effective CCs. This was associated with inferior outcomes. A substantial proportion of the victims was placed in RP. More attention should be paid to the correct positioning of victims in OHCA. This applies to CPR training for laypersons and dispatcher-assisted CPR.

Indexed as

Cardiopulmonary ResuscitationEmergency Medical ServicesOut-of-Hospital Cardiac ArrestCohort StudiesHumansProspective Studiesaccident & emergency medicineepidemiologymedical education & training

Identifiers

PMID32967879
PMCPMC7513596

What OpenQuestion holds

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Registered trials

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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.