Narrow Band Imaging Bronchoscopy During SARS-CoV2 Infection

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Total Enrollment

27 participants

Study Classification

OBSERVATIONAL

Study Start Date

2021-05-07

Study Completion Date

2023-07-31

Brief Summary

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Vascular modifications have been described during SARS-CoV2 infection, especially a dilatation of the bronchial arteries. Within the airway wall, small branches of the bronchial arteries cross the muscle layer to develop a submucosal network. The Narrow Band Imaging technique is used during bronchoscopy to achieve a maximum contrast of vessels and the surrounding mucosa. Therefore, it enables to observe the microvessel structure and its distribution in the bronchial mucosa. The aim of this study is to describe the vasculature pattern of the bronchial tree during infection with SARS-CoV2.

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Detailed Description

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Conditions

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Covid19 Bronchoscopy Narrow-band Imaging

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

RETROSPECTIVE

Study Groups

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Experimental

Patients hospitalized with SARS-CoV2 infection proven by RT-PCR test

NBI images and/or videos

Intervention Type OTHER

A library of NBI images and/or videos will be established from previously recorded bronchoscopies in 30 patients (10 with a SARS-CoV2 infection, 10 with a lower respiratory tract infection not related to SARS-CoV2, and 10 in patients with pulmonary nodule). NBI images and/or videos of the bronchial tree will then be analysed by three experimented interventional pulmonologists blinded to the patient ID. Each investigator will describe the vasculature pattern according to a prespecified grid: Normal mucosal vascularity / increased capillary density / presence of capillary loops / presence of dotted vessels / complex vascular networks of tortuous vessels or abrupt ending vessels / dilated longitudinal vessels. In case of discordance between the investigators, images will be reviewed to obtain a consensus.

Comparator

Patients hospitalized with lower respiratory tract infections unrelated to SARS-CoV2 (RT-PCR negative for SARS-CoV2)

NBI images and/or videos

Intervention Type OTHER

A library of NBI images and/or videos will be established from previously recorded bronchoscopies in 30 patients (10 with a SARS-CoV2 infection, 10 with a lower respiratory tract infection not related to SARS-CoV2, and 10 in patients with pulmonary nodule). NBI images and/or videos of the bronchial tree will then be analysed by three experimented interventional pulmonologists blinded to the patient ID. Each investigator will describe the vasculature pattern according to a prespecified grid: Normal mucosal vascularity / increased capillary density / presence of capillary loops / presence of dotted vessels / complex vascular networks of tortuous vessels or abrupt ending vessels / dilated longitudinal vessels. In case of discordance between the investigators, images will be reviewed to obtain a consensus.

Comparator 2

Patients who have had bronchoscopy performed as part of the assessment of a distal pulmonary nodule (RT-PCR negative for SARS-CoV2).

NBI images and/or videos

Intervention Type OTHER

A library of NBI images and/or videos will be established from previously recorded bronchoscopies in 30 patients (10 with a SARS-CoV2 infection, 10 with a lower respiratory tract infection not related to SARS-CoV2, and 10 in patients with pulmonary nodule). NBI images and/or videos of the bronchial tree will then be analysed by three experimented interventional pulmonologists blinded to the patient ID. Each investigator will describe the vasculature pattern according to a prespecified grid: Normal mucosal vascularity / increased capillary density / presence of capillary loops / presence of dotted vessels / complex vascular networks of tortuous vessels or abrupt ending vessels / dilated longitudinal vessels. In case of discordance between the investigators, images will be reviewed to obtain a consensus.

Interventions

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NBI images and/or videos

A library of NBI images and/or videos will be established from previously recorded bronchoscopies in 30 patients (10 with a SARS-CoV2 infection, 10 with a lower respiratory tract infection not related to SARS-CoV2, and 10 in patients with pulmonary nodule). NBI images and/or videos of the bronchial tree will then be analysed by three experimented interventional pulmonologists blinded to the patient ID. Each investigator will describe the vasculature pattern according to a prespecified grid: Normal mucosal vascularity / increased capillary density / presence of capillary loops / presence of dotted vessels / complex vascular networks of tortuous vessels or abrupt ending vessels / dilated longitudinal vessels. In case of discordance between the investigators, images will be reviewed to obtain a consensus.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Patients who undergo bronchoscopy with image and/or videos recording of NBI aspect of the proximal bronchial tree (carina, right and left upper lobe).
* Patients hospitalized with SARS-CoV2 infection proven by RT-PCR test
* patients hospitalized with lower respiratory tract infections unrelated to SARS-CoV2 (RT-PCR negative for SARS-CoV2)
* Patients who have had bronchoscopy performed as part of the assessment of a distal pulmonary nodule (RT-PCR negative for SARS-CoV2).