Evidence map›Paper›PMID 34746888›Full record

ArticleResuscitation plus2021

Chest compressions become deeper when pushing with forward lean: A simulation study.

Nao Sato, Kenji Karino, Makoto Hirose, Satoru Okamoto, Tomoko Osaka, Hatsue Matsumura, Yoshiaki Iwashita

Abstract read
In one paragraph

Article in Resuscitation plus, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. Trial
  2. 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

7 authors.

Nao SatoClinical Skill-up Center, Shimane University Hospital, Shimane, Japan.
Kenji KarinoClinical Skill-up Center, Shimane University Hospital, Shimane, Japan.
Makoto HiroseDepartment of Information Engineering, National Institute of Technology, Matsue College, Shimane, Japan.
Satoru OkamotoInformation Systems Interdisciplinary Graduate School of Science and Engineering, Shimane University, Shimane, Japan.
Tomoko OsakaDepartment of Nursing, Unnan City Hospital, Shimane, Japan.
Hatsue MatsumuraClinical Skill-up Center, Shimane University Hospital, Shimane, Japan.
Yoshiaki IwashitaDepartment of Emergency and Critical Care Medicine, Shimane University, Shimane, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimChest compression depth (CCD) in cardiopulmonary resuscitation is important. However, lightweight rescuers have difficulty achieving an appropriate depth. Chest compression force (CCFORCE) can be increased by placing the arms at 100° to the patient's frontal plane. In a simulation manikin study, we compared the CCD at 90° and 100° among lightweight Asian females and hypothesized that the CCD would be greater when the arms were placed at 100°.

methodsWe included 35 lightweight female students from Shimane University who performed compressions 30 times each at 90° and 100°. The CCFORCE and CCD and the residual force on the chest wall during decompression for each chest compression were compared using CPRmeter-2.

resultsOf the 35 participants, 3 were excluded because their angles deviated from the prescribed angle. Thirty-two participants were categorized according to CCD at 90°: ≤40 mm (group 1), 41-49 mm (group 2), and ≥ 50 mm (group 3). The overall mean CCD increased from 90° to 100° (44.3 ± 8.2 mm vs. 48.1 ± 7.2 mm; p < 0.05). The mean CCD changes between 90° and 100° were 34.4 ± 4.7 mm vs. 42.9 ± 4.8 mm (p < 0.05) in group 1, 44.9 ± 2.5 mm vs. 47.0 ± 4.2 mm (p = 0.17) in group 2, and 53.0 ± 2.7 mm vs. 55.4 ± 5.6 mm (p < 0.05) in group 3. The residual force was greater when the chest compression angle was 100°.

conclusionCCD can be increased for lightweight rescuers when using a forward leaning position of 100° to the frontal plane of the patient. Further research is required to obtain more realistic situations.

Indexed as

Cardiopulmonary resuscitationCCA, chest compression angleCCD, chest compression depthCCFORCE, chest compression forceChest compression angleCPR, cardiopulmonary resuscitationDepthLightweight

Identifiers

PMID34746888
PMCPMC8551462

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.