Evidence map›Paper›PMID 34698966›Full record

ArticleAnnals of intensive care2021

Impact of ICU transfers on the mortality rate of patients with COVID-19: insights from comprehensive national database in France.

Marc-Antoine Sanchez, Albert Vuagnat, Olivier Grimaud, Emmanuelle Leray, Jean-Marc Philippe, François-Xavier Lescure, Mathieu Boutonnet, Hélène Coignard, Agnès Ricard Hibon, Stephane Sanchez and 1 more

Open access · goldAbstract read
In one paragraph

Article in Annals of intensive care, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 9% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 32 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. [Experiences from SARS-CoV-2 pandemic at UKSH Lübeck].Medizinische Klinik, Intensivmedizin und Notfallmedizin · 2026
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  5. Observational
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  13. Critical care and pandemic preparedness and response.British journal of anaesthesia · 2023
    Review
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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

11 authors at 8 institutions in 1 country.

Marc-Antoine SanchezInformation Systems and Digital Department (DSIN), French Army Health Service, Saint Mandé-Bat 14, 69 avenue de Paris, 94165, Saint-Mandé, France. marc-antoine.sanchez@intradef.gouv.fr.
Albert VuagnatDepartment for Research, Studies, Evaluation and Statistics (DREES), French Health and Social Affairs Ministry, Paris, France.
Olivier GrimaudUniv Rennes, EHESP, REPERES(Recherche en pharmaco-épidémiologie et recours aux soins)-EA 7449, Rennes, France.
Emmanuelle LerayUniv Rennes, EHESP, REPERES(Recherche en pharmaco-épidémiologie et recours aux soins)-EA 7449, Rennes, France.
Jean-Marc PhilippeGeneral Directorate for Health (DGS)-French Health and Social Affairs Ministry, Paris, France.
François-Xavier LescureTropical and Infectious Disease Services, Bichat AP HP, Paris, France.
Mathieu BoutonnetDepartment of Anesthesiology and Intensive Care Unit, Percy Military Teaching Hospital, Clamart, France.
Hélène CoignardEmergency Medical Service, Lyon University Hospital, Lyon, France.
Agnès Ricard HibonEmergency Medical Service, Pontoise Regional Hospital, Pontoise, France.
Stephane SanchezDepartment of Public Health and Performance, Troyes Hospital, Champagne Sud Hospital, Troyes, France.ORCID http://orcid.org/0000-0002-0925-6948
Julien PottecherAnaesthesiology, Critical Care and Perioperative Medicine, Strasbourg University Hospital-EA3072, FMTS, Strasbourg, France.
École des Hautes Études en Santé Publique · FRCentre Hospitalier de Troyes · FRHôpital d'instruction des Armées Percy · FRHospices Civils de Lyon · FRInserm · FRMinistère des Solidarités et de la Santé · FRService de Santé des Armées · FRUniversité de Strasbourg · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe first wave of the COVID-19 pandemic confronted healthcare systems around the world with unprecedented organizational challenges, particularly regarding the availability of intensive care unit (ICU) beds. One strategy implemented in France to alleviate healthcare pressure during the first COVID-19 wave was inter-hospital transfers of selected ICU patients from overwhelmed areas towards less saturated ones. At the time, the impact of this transfer strategy on patient mortality was unknown. We aimed to compare in-hospital mortality rates among ICU patients with COVID-19 who were transferred to another healthcare facility and those who remained in the hospital where they were initially admitted to.

methodA prospective observational study was performed from 1 March to 21 June 2020. Data regarding hospitalized patients with COVID-19 were collected from the Ministry of Health-affiliated national SI-VIC registry. The primary endpoint was in-hospital mortality.

resultsIn total, 93,351 hospital admissions of COVID-19 patients were registered, of which 18,348 (19.6%) were ICU admissions. Transferred patients (n = 2228) had a lower mortality rate than their non-transferred counterparts (n = 15,303), and the risk decreased with increasing transfer distance (odds ratio (OR) 0.7, 95% CI: 0.6-0.9, p = 0.001 for transfers between 10 and 50 km, and OR 0.3, 95% CI: 0.2-0.4, p < 0.0001 for transfer distance > 200 km). Mortality decreased overall over the 3-month study period.

conclusionsOur study shows that the mortality rates were lower for patients with severe COVID-19 who were transferred between ICUs across regions, or internationally, during the first pandemic wave in France. However, the global mortality rate declined overall during the study. Transferring selected patients with COVID-19 from overwhelmed regions to areas with greater capacity may have improved patient access to ICU care, without compounding the short-term mortality risk of transferred patients.

Identifiers

PMID34698966
PMCPMC8546754
OpenAlexW3210948894

What OpenQuestion holds

Textmetadata
LicenceCC BY
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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.