- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02614001
Inspiratory Muscle Training in Stroke Patients With Stable Congestive Heart Failure: a Prospective RCT.
Inspiratory Muscle Training in Stroke Patients With Stable Congestive Heart Failure: a Prospective Randomized Controlled Trial.
Objectives: Little has been known the effectiveness of respiratory muscle training in patients with both stroke and heart failure. To investigate the feasibility and effectiveness of the inspiratory muscle training (IMT) in the respiratory muscle strength, cardiopulmonary function, exercise capacity, fatigue and quality of life in stroke patients with congestive heart failure.
Design: A single-blind prospective randomized controlled study. Setting: A tertiary care medical center. Participant and method A total of twenty stroke patients with stable CHF, class I-III [NYHA (New York Heart Association)], aging between 20 to 85 year-old, will be eligible and randomly assigned into IMT and control group. Stroke will be confirmed by computerized tomography or magnetic resonance imaging. And CHF will be confirmed by a cardiologist. Both of groups will receive a conventional stroke rehabilitation program and diaphragmatic breathing training. The IMT groups will be trained daily, 30 minutes per day, at least 5 times a week, for 4 weeks; then readmitted to hospital 2 weeks later. For checking the compliance of IMT at home, patients will be monitored by making a phone call to them twice a week. Or patient will receive an out patient program about 10 weeks if they are not admitted to our hospital.
Main outcome measurement:
Each subject's baseline characteristics, and duration of the disease, neurological level (Brunnstrom's stage), functional level, spirometry; resting heart rate, blood pressure, resting oxyhemoglobin saturation (SpO2), lowest resting SpO2, maximal inspiratory pressure, maximal expiratory pressure, the resting oxyhemoglobin saturation (SpO2), lowest resting SpO2 and Borg's scale during a 6-minute walking test , handgrip strength, visual analog scale for severity of fatigue, fatigue assessment scale, Barthel scale will be assessed before and after program.
Study Overview
Status
Conditions
Detailed Description
A total of forty stroke patients with stable CHF, NYHA (New York Heart Association) class I-III, aging between 20 to 85 year-old, will be eligible and randomly assigned into IMT and control group. The diagnosis of CHF is according to framingham Criteria. Consensus will be completed before our intervention. All technicians who performed the different measurements and assessed the outcomes were blinded to group assignments.
Both of groups will receive a conventional stroke rehabilitation program. Exclusion criteria Patients who can't tightly place their lips over the mouthpiece or have air leakage during inhaling or exhaling through the threshold device, have COPD, a history of recent exacerbation, unstable angina, decompensated CHF, complicated arrhythmias, at risk or history of pneumothorax, large bullae on chest radiograph, marked osteoporosis together with a history of spontaneous rib fractures, a history of recent lung surgery (ie, within 12 months), or use of long-term oxygen therapy.
The Institutional Review Board of Chang Gung Memorial Hospital, Kaohsiung Medical Center will approve the study protocol and all patients provided informed consent.
IMT training: Inspiratory muscle training will be performed by using a pressure threshold device (Threshold® IMT HS730, RESPIRONICS Inc, Cedar Grove, NJ, USA). During training, patients will be in a sitting position with a nose-clip and instructed to place their lips around the mouthpiece, inhale with enough force to open the valve, exhale through the mouthpiece, and then continue inhaling and exhaling without removing the device from their mouth. During the initial training session, patients will be encouraged to start at a resistance equal to 30% of their MIP or at a load the patient can tolerated, and then the loading will be gradually increased 2cm H2O per week or as symptom tolerated and according to the RPE scale. Throughout the first session training, the monitoring of oxygen saturation will be applied. And the load will be minimized if there is any decrease in oxygen saturation during loaded breathing Patients will take intermittent periods of rest if they feel uncomfortable; and if the patient cannot tolerate the increased resistance or the patients who are unable to finish full session training, and then those of last part of training will be continued. Patients will be warned to expect transient delayed-onset muscle soreness, a consequence of muscle adaptation to an unaccustomed activity. And training will be immediately stopped if they experience severe sharp pain on inspiration.
Patient will be trained daily, total 30 minutes or 15 minutes twice per day, at least 5 times a week, for 4 weeks; then readmitted to hospital 2 weeks later . For checking the compliance of IMT at home, patients will be monitored by making a phone call to them twice a week. Or patient will receive an outpatient program about 10 weeks if they are not readmitted to our hospital, or patient will directly receive outpatient program if they cannot be admitted in the hospital..
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
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-
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Kaohsiung, Taiwan, 83305
- Department of Physical Medicine and Rehabilitation, Kaohsiung Chang Gung Memorial Hospital.
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- stroke patients with stable CHF, NYHA(New York Heart Association) class I-III
Exclusion Criteria:
- Patients who can't tightly place their lips over the mouthpiece or have air leakage during inhaling or exhaling through the threshold device, have COPD, a history of recent exacerbation, unstable angina, decompensated CHF, complicated arrhythmias, at risk or history of pneumothorax, large bullae on chest radiograph, marked osteoporosis together with a history of spontaneous rib fractures, a history of recent lung surgery (ie, within 12 months), or use of long-term oxygen therapy.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Supportive Care
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: inspiratory muscle training, stroke rehabilitation
Inspiratory muscle training with a pressure threshold device (Threshold® IMT HS730, RESPIRONICS Inc, Cedar Grove, NJ, USA) will be start at a resistance equal to 30% of their MIP or at a load which patient can tolerate, and then the loading will be gradually increased 2cm H2O per week or as symptom tolerated and according to the RPE scale.
Each patient will receive regular post-stroke rehabilitation program.
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Patient will be trained daily, total 30 minutes or 15 minutes twice per day, at least 5 times a week, for 10 weeks
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Other: control group
stroke rehabilitation.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
MIP, MEP
Time Frame: 10 weeks
|
maximal inspiratory pressure, maximal expiratory pressure MIP was measured after maximal expiration with each subject seated and wearing a nose-clip, and MEP was measured after maximal inspiration.
An experienced respiratory therapist who strongly urged the subjects to make maximum inspiratory and expiratory efforts at or near residual and total lung capacity, respectively, performed the measurements.
Determinations were repeated until two technically satisfactory measurements were recorded, with the highest value used for calculations.
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10 weeks
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
The Stages of Heart Failure. NYHA (New York Heart Association) Classification
Time Frame: 10 weeks
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In order to determine the best course of therapy, physicians often assess the stage of heart failure according to the (NYHA) functional classification system.
This system relates symptoms to everyday activities and the patient's quality of life.
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10 weeks
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Pulmonary function tests
Time Frame: 10 weeks
|
Pulmonary function tests were performed using a standard spirometer (Vitalograph, Serial Spirotrac, Buckingham, USA) according to the ATS recommendationsat the beginning and end of the 8-week home based IMT program.
Measures included parameters of FVC, FEV1, and maximum mid-expiratory flow (MMEF).
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10 weeks
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six-minute walk work (6MWORK)
Time Frame: 10 weeks
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The six-minute walk work (6MWORK) value was calculated as body mass x distance covered during the 6MWT.
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10 weeks
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Liaw Mei-Yun, MD, Department of Physical Medicine and Rehabilitation, Kaohsiung Chang Gung Memorial Hospital.
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 99-3663A3
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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