Evidence map›Paper›PMID 34606150›Full record

ArticleClinical otolaryngology : official journal of ENT-UK ; official journal of Netherlands Society for Oto-Rhino-Laryngology & Cervico-Facial Surgery2022

Histological findings of tracheal samples from COVID-19 positive critically ill mechanically ventilated patients.

Patrick Alexander Ward, Jonathan Marc Collier, Justin Weir, Michael Osborn, Brian Hanley, William James Buchanan Smellie, Chelwest COVID-19 Tracheostomy Group

Open access · bronzeAbstract read
In one paragraph

Article in Clinical otolaryngology : official journal of ENT-UK ; official journal of Netherlands Society for Oto-Rhino-Laryngology & Cervico-Facial Surgery, 2022. 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
0.6field-weighted citation impact, top 30% 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

2 citing papers in PubMed, 4 citations in OpenAlex.

  1. Article
  2. Histological findings of tracheal samples from COVID-19 positive critically ill mechanically ventilated patients.Clinical otolaryngology : official journal of ENT-UK ; official journal of Netherlands Society for Oto-Rhino-Laryngology & Cervico-Facial Surgery · 2022
    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

7 authors at 2 institutions in 1 country.

Patrick Alexander WardMagill Department of Anaesthesia, Chelsea and Westminster Hospital, London, UK.ORCID https://orcid.org/0000-0003-1925-9744
Jonathan Marc CollierDepartment of Plastic and Reconstructive Surgery, Chelsea and Westminster Hospital, London, UK.
Justin WeirDepartment of Cellular Pathology, North West London Pathology, Imperial College Healthcare NHS Trust, Charing Cross Hospital, London, UK.
Michael OsbornDepartment of Cellular Pathology, North West London Pathology, Imperial College Healthcare NHS Trust, Charing Cross Hospital, London, UK.
Brian HanleyDepartment of Cellular Pathology, North West London Pathology, Imperial College Healthcare NHS Trust, Charing Cross Hospital, London, UK.
William James Buchanan SmellieDepartment of General Surgery, Chelsea and Westminster Hospital, London, UK.
Chelwest COVID-19 Tracheostomy Group
Chelsea and Westminster Hospital · GBImperial College Healthcare NHS Trust · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesThis study examines the histological findings of tracheal tissue samples obtained from COVID-19 positive mechanically ventilated patients, to assess the degree of tracheal inflammation/ulceration present. DESIGN AND

participantsRetrospective single-centre observational cohort study. All patients admitted to Adult Intensive Care Unit (AICU) with COVID-19 infection, requiring mechanical ventilation and surgical tracheostomy between 1 April and 1 May 2020, were included (Group 1). Tracheal windows excised at tracheostomy underwent histological analysis. Comparison was made with: tracheal windows from COVID-19 positive AICU ventilated patients admitted between 1 January and 1 March 2021 (Group 2); tracheal windows from COVID-19 negative AICU ventilated patients (Group 3); and, tracheal autopsy samples from COVID-19 positive patients that died without undergoing prolonged mechanical ventilation (Group 4).

resultsGroup 1 demonstrated mild/moderate inflammation (tracheitis) in nearly all samples (15/16, 93.8%), with infrequent micro-ulceration (2/16, 12.5%). Group 2 demonstrated similar mild/moderate inflammation in all samples (17/17, 100%), with no ulceration. Histological findings of Groups 1 and 2 COVID-19 positive patients were similar to Group 3 COVID-19 negative patients, which demonstrated mild/moderate inflammation (5/5, 100%), with uncommon superficial erosion (1/5, 20%). Group 4 demonstrated mild chronic inflammation or no significant inflammation, with uncommon micro-ulceration (1/4, 25%).

conclusionsSevere tracheal inflammation was not demonstrated in mechanically ventilated COVID-19 positive patients at the level of the second/third tracheal rings, at the stage of disease patients underwent tracheostomy. Histological findings were similar between mechanically ventilated COVID-19 positive and negative patients. Tracheal ulceration may be a feature of early or severe COVID-19 disease.

Indexed as

Respiration, ArtificialCOVID-19Cross-Sectional StudiesFemaleHumansIntensive Care UnitsLondonMaleMiddle AgedPneumonia, ViralRetrospective StudiesSARS-CoV-2TracheaTracheostomyCOVID-19histologyinflammationmechanically ventilatedtrachealulceration

Identifiers

PMID34606150
PMCPMC8653284
OpenAlexW3202969399

What OpenQuestion holds

Textmetadata
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.