Respiratory Restriction in Prader-Willi Syndrome

NCT ID: NCT06851351

Last Updated: 2025-02-28

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

COMPLETED

Total Enrollment

30 participants

Study Classification

OBSERVATIONAL

Study Start Date

2024-01-16

Study Completion Date

2024-07-05

Brief Summary

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The main aim of this study is therefore to evaluate the impact of Prader Willi Syndrome (PWS) on lung and thoracoabdominal volumes, respiratory muscle strength and awake ventilatory pattern, and to quantify and localize the PWS-induced respiratory restriction.

Detailed Description

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The aim is to study lung function in obese PWS patients using both volitional (spirometry, nitrogen wash-out, and maximal pressure measurements (MIP and MEP)) and non-volitional (awake ventilatory pattern by opto-electron plethysmography) tests, both in sitting and supine positions.

Spirometry, nitrogen wash-out, and MIP and MEP measurements are comprehensive assessments, while optoelectronic plethysmography allows restriction location through accurate measurement of thoracoabdominal volumes.

The results of the study could provide useful information about the calculation of the volumes enclosed by the grid of markers (in particular, the volume of the rib cage, which reflects the action of the intercostal muscles, the volume of the abdomen, which reflects the action of the diaphragm in the inspiratory phase and of the abdominal muscles during exhalation and their sum, which represents the total variation of the thoraco-abdominal wall. All these finds could be useful for respiratory rehabilitation protocols for obese PWS patients.

Conditions

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Prader-Willi Syndrome

Study Design

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Observational Model Type

COHORT

Study Time Perspective

CROSS_SECTIONAL

Study Groups

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Patients with Prader Will syndrome and BMI > 30 kg/m2

Spirometry and optoelectronic plethysmography

Intervention Type DIAGNOSTIC_TEST

Spirometry for respiratory function and optoelectronic plethysmography for respiratory pattern during wakefulness

Control subjects with BMI < 25 kg/m2

Spirometry and optoelectronic plethysmography

Intervention Type DIAGNOSTIC_TEST

Spirometry for respiratory function and optoelectronic plethysmography for respiratory pattern during wakefulness

Interventions

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Spirometry and optoelectronic plethysmography

Spirometry for respiratory function and optoelectronic plethysmography for respiratory pattern during wakefulness

Intervention Type DIAGNOSTIC_TEST

Eligibility Criteria

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Inclusion Criteria

* Age 20-50 years
* Prader Willi Syndrome
* Body Mass Index \> 30 kg/m2


* Age 20-50 years
* Body Mass Index \< 25 kg/m2

Exclusion Criteria

* Lack of signed consent form

Control subjects


* Lack of signed consent form
Minimum Eligible Age

20 Years

Maximum Eligible Age

50 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Istituto Auxologico Italiano

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Istituto Auxologico Italiano IRCCS, Site Piancavallo

Oggebbio, Verbania, Italy

Site Status

Countries

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Italy

Other Identifiers

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01C318

Identifier Type: -

Identifier Source: org_study_id

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