Evidence map›Paper›PMID 41219917›Full record

ArticleScandinavian journal of trauma, resuscitation and emergency medicine2025

Drowning incidents treated by the Danish Royal Air Force's Search and Rescue helicopters: a 10-year nationwide registry-based cohort study.

Niklas Breindahl, Katharina Sunekaer, Kasper Bitzer, Signe A Wolthers, Monika Laugesen, Anne-Sofie Lynnerup, Jacob Steinmetz, Helle C Christensen

Abstract read
In one paragraph

Article in Scandinavian journal of trauma, resuscitation and emergency medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. Article
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

8 authors.

Niklas BreindahlPrehospital Center Region Zealand, Ringstedgade 61, 14th Floor, Naestved, 4700, Denmark. nbrei@regsj.dk.ORCID http://orcid.org/0000-0003-3016-3567
Katharina SunekaerDanish Defence Medical Command, Sodalsparken 20, Brabrand, 8220, Denmark.
Kasper BitzerPrehospital Center Region Zealand, Ringstedgade 61, 14th Floor, Naestved, 4700, Denmark.
Signe A WolthersPrehospital Center Region Zealand, Ringstedgade 61, 14th Floor, Naestved, 4700, Denmark.
Monika LaugesenDanish Defence Medical Command, Sodalsparken 20, Brabrand, 8220, Denmark.
Anne-Sofie LynnerupDanish Defence Medical Command, Sodalsparken 20, Brabrand, 8220, Denmark.
Jacob SteinmetzDanish Air Ambulance, Brendstrupgaardsvej 7, Aarhus, 8200, Denmark.
Helle C ChristensenPrehospital Center Region Zealand, Ringstedgade 61, 14th Floor, Naestved, 4700, Denmark.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe primary objective of this study was to estimate the incidence and describe the characteristics of non-fatal and fatal drowning incidents treated by the Royal Danish Air Force's Search And Rescue (SAR) helicopters from 2014 to 2023.

methodsThis nationwide registry-based cohort study identified drowning patients treated by the SAR helicopters from January 1, 2014, through December 31, 2023. The medical records within the SAR database were used for patient identification and data extraction. We reported the annual number of fatal and non-fatal drowning incidents stratified for prehospital survival and assessed prognostic factors associated with fatal drowning using Fisher's Exact Test.

resultsDuring the 10-year study period from 2014 to 2023, 247 drowning incidents treated by SAR helicopters were recorded, corresponding to an incidence rate of 0.43 cases per 100,000 person-years [95% CI: 0.38-0.49]. After exclusion of patients with irreversible signs of death, 229 patients were analysed. Males accounted for 89%, and most patients were treated from June to August (42%). The prehospital survival rate was 55%. Significantly higher fatal drowning rates were observed for male vs. female patients (39% vs. 5%), patients aged 50-70 years vs. <20 years (approx. 50% vs. 8%), submersion vs. immersion (86% vs. 1%) and low GCS score < 14 vs. 14-15 at SAR arrival 85% vs. 0%). The fatal group received prehospital critical care interventions more frequently, as part of advanced life support.

conclusionsThe SAR helicopters rescue and treat a significant number of drowning patients every year. The overall prehospital survival rate was 55%, and significant prognostic factors associated with fatal drowning included male sex, increasing age, submersion injury, and a GCS score < 14 at SAR arrival.

Indexed as

Air AmbulancesDrowningMilitary PersonnelRegistriesAdolescentAdultAgedChildCohort StudiesDenmarkFemaleHumansIncidenceMaleMiddle AgedSurvival RateDrowning [MeSH]Emergency medical services [MeSH]Helicopter emergency medical services [MeSH]Out-of-hospital cardiac arrest [MeSH]Prehospital care [MeSH]Rescue work [MeSH]Search and rescue

Identifiers

PMID41219917
PMCPMC12607227

What Socratic holds

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LicenceCC BY-NC-ND
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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 Socratic graph.