Evidence map›Paper›PMID 31139364›Full record

Observational studyAntimicrobial resistance and infection control2019

Patterns in the longitudinal oropharyngeal microbiome evolution related to ventilator-associated pneumonia.

Rami Sommerstein, Tobias M Merz, Sabine Berger, Julia G Kraemer, Jonas Marschall, Markus Hilty

Registry-linked trialAbstract readObservational Study
In one paragraph

Observational study in Antimicrobial resistance and infection control, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04849039 ("Pulmonary Microbiota and Related Immunity Role in Predicting Ventilator Associated- Pneumonia), which is not on this map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
–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.

NCT04849039 unknown statusnot on this mapstarted 2020, after this paper: background citation

"Pulmonary Microbiota and Related Immunity Role in Predicting Ventilator Associated- Pneumonia (VAP) Development in Mechanical Ventilated Patients"

TypeobservationalSponsorFondazione IRCCS Ca' Granda, Ospedale Maggiore PoliclinicoRan2020 to 2023Enrolled700ConditionsMechanical Ventilation
3 · Its place in the literature

Who cites it

18 citing papers in PubMed, 1 synthesis or guideline pooled it.

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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

6 authors.

Rami SommersteinDepartment of Infectious Diseases, Bern University Hospital, University of Bern, Freiburgstrasse; 4, 3010 Bern, Switzerland.ORCID 0000-0003-1011-6878
Tobias M MerzDepartment of Intensive Care, Bern University Hospital, University of Bern, Bern, Switzerland.
Sabine BergerDepartment of Intensive Care, Bern University Hospital, University of Bern, Bern, Switzerland.
Julia G Kraemer4Institute for Infectious Diseases, University of Bern, Friedbühlstrasse 51, 3001 Bern, Switzerland.
Jonas MarschallDepartment of Infectious Diseases, Bern University Hospital, University of Bern, Freiburgstrasse; 4, 3010 Bern, Switzerland.
Markus Hilty4Institute for Infectious Diseases, University of Bern, Friedbühlstrasse 51, 3001 Bern, Switzerland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: The aim of the study was to evaluate the composition and the temporal evolution of the oropharyngeal microbiome in antibiotic-naïve patients requiring mechanical ventilation and to gain new insights into the pathogenesis of ventilator-associated pneumonia (VAP). Methods: Prospective, observational single-center nested case-control study. Patients with acute critical illness and anticipated duration of mechanical ventilation > 4 days were eligible. We took oropharyngeal swabs (and if available, tracheal secretions) daily, starting at the day of intubation. The microbiota was characterized by 16S rRNA high-throughput sequencing and compared between patients developing VAP versus controls. Results: Five patients developed VAP. In three patient the causative pathogens were Enterobacteriaceae and in two Conclusions: In acutely-ill patients who developed enterobacterial VAP the causative pathogen gained access to the oropharynx early after starting mechanical ventilation and outgrew the commensal members of the microbiome. Whether a specific pattern of the oropharyngeal microbiome between days three to five of mechanical ventilation may predict VAP enterobacterial VAP has to be evaluated in further studies.

Indexed as

Intensive Care UnitsMicrobiotaAdolescentAdultAgedCase-Control StudiesEnterobacteriaceaeEnterobacteriaceae InfectionsFemaleHaemophilus influenzaeHigh-Throughput Nucleotide SequencingHumansLongitudinal StudiesMaleMiddle AgedOropharynxRNA, Ribosomal, 16SInfection preventionIntensive careNosocomial pneumoniaOropharyngeal and tracheal microbiomeVentilator-associated pneumonia

Identifiers

PMID31139364
PMCPMC6530040

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Registered trials

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.