Dynamic Impact of NIV on Diaphragmatic Ultrasound in Patients With Amyotrophic Lateral Sclerosis

NCT ID: NCT07170865

Last Updated: 2025-09-12

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

NOT_YET_RECRUITING

Total Enrollment

20 participants

Study Classification

OBSERVATIONAL

Study Start Date

2025-09-01

Study Completion Date

2026-10-15

Brief Summary

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The goal of this pilot observational study is to learn about the dynamic impact of the non invasive ventilation on the diaphragm in patient with amyotrophic lateral sclerosis. The main question it aims to answer : can diaphragmatic ultrasound detect differences in diaphragmatic motion (diaphragmactic excursion and diaphragmatic thickening between spontaneous breathing and non-invasive ventilation ?

Participants will receive diaphragmatic ultrasound assessments both under spontaneous breathing and during non-invasive ventilation on their day hospital evaluation for ventilatory support.

Detailed Description

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Each diaphragmatic ultrasound assessment will be performed on both the right and left hemidiaphragms, with the patient in a semi-recumbent position at 30°, during a maximal inspiratory effort. The following parameters will be measured:

* Diaphragmatic excursion using M-mode ultrasound with a low-frequency convex (abdominal) probe via a subcostal approach
* Diaphragmatic thickening using B-mode ultrasound with a high-frequency linear (vascular) probe via the lateral axillary line

Measurements will be obtained during spontaneous breathing and after 10 to 20 minutes of non-invasive ventilation (NIV), using ventilator settings deemed optimally adjusted by the supervising physician.

Conditions

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Amyotrophic Lateral Sclerosis (ALS) Non Invasive Ventilation (NIV)

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Eligibility Criteria

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Inclusion Criteria

* Adult patient (≥18 years old)
* Diagnosis of bulbar or spinal amyotrophic lateral sclerosis (ALS) established by a neurologist
* Indication for non-invasive ventilation (NIV) confirmed by the referring pulmonologist for daytime and/or nocturnal alveolar hypoventilation

Exclusion Criteria

* Continuous (24-hour) non-invasive ventilation
* Patient refusal to participate
* Individual under legal guardianship or judicial protection
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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University Hospital, Grenoble

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Christel Saint Raymond, Doctor

Role: STUDY_DIRECTOR

CHU Grenoble Alpes

Locations

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CHU Grenoble-Alpes

Grenoble, Isère, France

Site Status

Countries

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France

Central Contacts

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Christel Saint Raymond, Doctor

Role: CONTACT

+33 4 76 76 54 53

Hugo Vanderstraete, Resident

Role: CONTACT

+33 6 78 34 08 51

Facility Contacts

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Christel Saint Raymond, Doctor

Role: primary

+33 4 76 76 54 53

Hugo Vanderstraete

Role: backup

+33 6 78 34 08 51

References

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Reference Type BACKGROUND
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Reference Type BACKGROUND
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Reference Type BACKGROUND
PMID: 16426990 (View on PubMed)

Su WM, Cheng YF, Jiang Z, Duan QQ, Yang TM, Shang HF, Chen YP. Predictors of survival in patients with amyotrophic lateral sclerosis: A large meta-analysis. EBioMedicine. 2021 Dec;74:103732. doi: 10.1016/j.ebiom.2021.103732. Epub 2021 Dec 1.

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Reference Type BACKGROUND
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Reference Type BACKGROUND
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Reference Type BACKGROUND
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Fantini R, Tonelli R, Castaniere I, Tabbi L, Pellegrino MR, Cerri S, Livrieri F, Giaroni F, Monelli M, Ruggieri V, Fini N, Mandrioli J, Clini E, Marchioni A. Serial ultrasound assessment of diaphragmatic function and clinical outcome in patients with amyotrophic lateral sclerosis. BMC Pulm Med. 2019 Aug 27;19(1):160. doi: 10.1186/s12890-019-0924-5.

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Reference Type BACKGROUND
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Other Identifiers

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38RC25.0186

Identifier Type: -

Identifier Source: org_study_id

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