Polysomnography-directed Noninvasive Ventilation in Amyotrophic Lateral Sclerosis (ALS)
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|ClinicalTrials.gov Identifier: NCT01363882|
Recruitment Status : Unknown
Verified May 2011 by Columbia University.
Recruitment status was: Active, not recruiting
First Posted : June 2, 2011
Last Update Posted : June 2, 2011
|Condition or disease||Intervention/treatment||Phase|
|Amyotrophic Lateral Sclerosis (ALS)||Other: Sleep study-guided adjustment of NIV Other: Standard initiation of NIV||Not Applicable|
|Study Type :||Interventional (Clinical Trial)|
|Estimated Enrollment :||40 participants|
|Intervention Model:||Parallel Assignment|
|Masking:||Double (Participant, Investigator)|
|Primary Purpose:||Supportive Care|
|Official Title:||Progression of Respiratory Dysfunction in Amyotrophic Lateral Sclerosis (ALS) Patients: A Comparison of Standard of Practice vs Polysomnography-Directed Nocturnal Non-Invasive Positive Pressure Ventilation|
|Study Start Date :||February 2008|
|Actual Primary Completion Date :||January 2011|
Active Comparator: Standard NIV
Noninvasive ventilation (NIV) will be initiated and managed as per current standard of practice guided by the American Academy of Neurology (AAN) Practice Parameters (updated in 2009), in all subjects with amyotrophic lateral sclerosis (ALS) and a forced vital capacity of <50% predicted. Sleep studies will be performed at baseline, 2 weeks, 1, 3 and 6 months, but will not influence management of the NIV.
Other: Standard initiation of NIV
NIV will be initiated and managed as per current standard of practice. Sleep studies will be performed at baseline, 2 weeks, 1, 3 and 6 months to gather data but will not influence NIV management. NIV will be adjusted by a respiratory therapist or the subject's primary physician per waking symptoms.
Experimental: Sleep study titrated NIV
ALS subjects in this arm, who are offered NIV for Forced Vital Capacity (FVC) <50% as per AAN Practice Parameters, will have their initial level of NIV determined polysomnographically. They will be followed with sleep studies at 1 month, 3 months and 6 months to reassess NIV efficacy and NIV will be adjusted as necessary to optimize parameters of oxygenation and ventilation.
Other: Sleep study-guided adjustment of NIV
Sleep studies will be performed at baseline, within 2 weeks to initially titrate NIV, and at 1, 3 and 6 months to assess NIV performance and adjust it as necessary based on oxygenation and ventilation parameters.
- Change from baseline in spirometric, respiratory muscle strength, and gas exchange measures [ Time Frame: Up to 6 months after starting NIV ]FVC (forced vital capacity), FEV1 (forced expiratory volume in 1 second), MIP (maximum inspiratory pressure) and MEP (maximum expiratory pressure
- Duration that the Mental Component Summary (MCS) is maintained above 75% of baseline score for the Medical Outcomes Study Health Survey (SF-12) [ Time Frame: Up to 6 months after starting NIV ]
- Survival [ Time Frame: Up to 6 months after baseline ]Whether sleep study-titrated NIV is associated with trends to improved survival, compared with standardly prescribed (non-titrated) NIV
- Nocturnal oxygenation and ventilation [ Time Frame: Up to 6 months after starting NIV ]Nadir oxygen saturation, number of oxygen desaturations of 3%/hr (ODI3), % time of sleep spent with oxygen saturation <90%, apnea-hypopnea index, asynchrony index
- Modified Borg dyspnea score (see description) [ Time Frame: Up to 6 months after baseline ]The Modified Borg Dyspnea Scale is a 10-point Likert scale asking subjects to rate perceived shortness of breath, ranging from 0 (no breathlessness at all) to 10 (maximal breathlessness)
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01363882
|United States, New York|
|Columbia University Medical Center|
|New York, New York, United States, 10032|
|Principal Investigator:||Robert C Basner, MD||Columbia University|