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Study of sleep quality, the strength of the lungs, the strength of the muscles of breathing, closing of the throat, nervous system and quality of life in patients with Myasthenia Gravis

Evaluation of sleep, lung function, respiratory muscle strength, respiratory mechanics, collapsibility of the upper airway, autonomic nervous activity, and quality of life in patients with Myasthenia Gravis

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
REBEC
Registry ID
RBR-7ckpdd
Enrollment
Unknown
Registered
2013-10-30
Start date
2013-11-01
Completion date
Unknown
Last updated
2025-10-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

myasthenia Gravis

Interventions

Patients will undergo a clinical interview-type examination conducted by sleep a standard overnight polisomnography, pulmonary function, respiratory muscle strength test, test negative expiratory pres
Other
E01.370.386.700.660.225.500

Sponsors

Universidade Nove de Julho - UNINOVE
Lead Sponsor
Universidade Nove de Julho - UNINOVE
Collaborator

Eligibility

Age
18 Years to 65 Years

Inclusion criteria

Inclusion criteria: Patients diagnosed with Myasthenia Gravis, clinically stable, of both genders, aged between 18 and 65 years, who agree to participate in this study by signing the Instrument of Consent.

Exclusion criteria

Exclusion criteria: Patients who making use of abusive alcohol and or drugs and which is not available to participate in all stages of the study.

Design outcomes

Primary

MeasureTime frame
Apnea/Hypopnea index per hour of sleep (AHI) recorded by polysomnography complete, after the clinical and demographic collecting data. ;Expiratory flow limitation as flow drop (V`), expressed as the percentage of expiratory peak flow immediately after negative expiratory pressure test application. This will be measured after the clinical and demographic collecting data and after the obstruction diagnosis by spirometry is discarded. ;Volume expired in 0.2s (V0.2s) immediately after negative expiratory pressure administration. This will be measured after the clinical and demographic collecting data and after the obstruction diagnosis by spirometry is discarded.

Secondary

MeasureTime frame
High/low risk at Berlin Questionnaire which is a 10-item questionnaire with recognized efficacy in distinguishing subjects at greater risk for OSA. This will be measured after the clinical and demographic collecting data. ;Score at the Epworth Scale, which is used for the assessment of excessive daytime sleepiness. This will be measured after the clinical and demographic collecting data. ;Sleep efficiency, as assessed by the basal nocturnal polysomnography. This will be measured after the clinical and demographic collecting data, by the standard overnight polysomnography. ;Time with peripherical oxyhemoglobin saturation (SpO2 < 90%), as assessed by the basal nocturnal polysomnography. This will be measured after the clinical and demographic collecting data, by the standard overnight polysomnography.

Countries

Brazil

Contacts

Public ContactLuís Oliveira

Universidade Nove de Julho - UNINOVE

oliveira.lvf@pq.cnpq.br+55(11)3665-9894

Outcome results

None listed

Source: REBEC (via WHO ICTRP) · Data processed: Mar 7, 2026