AsthmaCPAP-STRANCT03215303
Effects of CPAP in Severe Therapy-resistant Asthma
A study testing Continuous Positive Airway Pressure (CPAP) in people with Asthma, run by Pontificia Universidade Católica do Rio Grande do Sul at 1 site in Brazil.
Trial summary
The purpose of this study is to verify the effects of continuous positive airway pressure (CPAP) on exercise capacity of children and adolescents with severe therapy-resistant asthma (STRA). A randomized, controlled, crossover clinical trial will be conducted. Read more about this study
- Who is it for?
- Ages 6 to 18 years
- Conditions the study is for
- Asthma
- What is being tested?
- Continuous Positive Airway Pressure (CPAP)
- Type of treatment
- Medical device
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 13 participants
- Where
- 1 siteBrazil
- Study dates
- 25 Jul 2017to 1 Aug 2019
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 6 to 18 years
- All sexes
- No healthy volunteers
- Child, Adult
Who may be able to join
- Individuals with a clinical diagnosis of severe therapy-resistant asthma (STRA), of both sexes, aged between 6 and 18 years, who are under regular follow-up in the asthma outpatient clinic at São Lucas Hospital, PUCRS.
- The criteria for the classification of STRA is based on the Global Initiative for Asthma (GINA) guidelines:
- Asthma requiring treatment in steps 4-5 of GINA (≥800 mg/day of budesonide or equivalent, associated with long-acting ß2-adrenergic agonist (LABA);
- Use of continuous oral corticoid or omalizumab, presenting uncontrolled disease;
- Uncontrolled disease characterized by: 1) persistent symptoms or asthma control test (ACT) <20 (> 3 months); 2) acute exacerbations (with intensive care unit admission, at least 2 hospitalizations, or 2 courses of oral corticoid over the last 12 months); Or 3) non-reversible obstruction of pulmonary function, even after corticoid use.
Who cannot join
- Subjects with cognitive/motor limitations or other chronic diseases (neurological diseases, cardiac anomalies, congenital or immunodeficiencies), which may compromise the evaluation of asthma, as well as the procedures proposed by the present study.
Trial locations and contacts
1 site in 1 country.
Brazil1 site
Pontifífia Universidade Católica do Rio Grande do Sul
Porto Alegre, Rio Grande do Sul, 90619-900
About this study
Official title: Effects of Continuous Positive Airway Pressure (CPAP) on Exercise Capacity of Children and Adolescents With Severe Therapy-resistant Asthma
The purpose of this study is to verify the effects of continuous positive airway pressure (CPAP) on exercise capacity of children and adolescents with severe therapy-resistant asthma (STRA). A randomized, controlled, crossover clinical trial will be conducted. We expect the use of CPAP to increase exercise capacity in children and adolescents with STRA.
Read the detailed description
This project aims to verify the effects of continuous positive airway pressure (CPAP) on exercise capacity of children and adolescents with severe asthma therapy-resistant (STRA). A randomized, controlled, crossover clinical trial will be conducted. Children and adolescents between 6 and 18 years old, with a diagnosis of STRA, will be included in the study. Patients wil be recruited in the São Lucas Hospital (HSL) Asthma Outpatient Clinic of the Pontifical Catholic University of Rio Grande do Sul. Patients who accept to participate in the study will perform a medical consultation according to routine outpatient asthma clinic, anthropometric evaluation and pulmonary function tests. Afterwards, they will be randomized into control and intervention groups. Participants in the intervention group will use noninvasive ventilation (NIV) in CPAP mode with 10cmH2O of positive end-expiratory pressure (PEEP), fraction of inspired oxygen (FiO2) of 0.21, for a period of 40 minutes. Participants in the control group will use NIV (CPAP), with a minimum PEEP of 1cmH20 and a FiO2 of 0.21 also for 40 minutes. Afterwards, patients from both groups will perform a maximum cardiopulmonary exercise test (CPET). A sample size of 18 individuals to be included in the study was estimated. The variables studied will be maximal oxygen consumption and the anaerobic threshold (that measures exercise capacity), distance and time (to measure exercise tolerance), peripheral oxygen saturation, peak expiratory flow and the sensation of dyspnea at the end of the CPET.
- Conditions
- Asthma
- Being tested
- Continuous Positive Airway Pressure (CPAP)
- Keywords
- Asthma, Continuous positive airway pressure, Oxygen consumption
- Medical subject headings
- Asthma
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Continuous Positive Airway Pressure (CPAP)Device
In the first moment, CPAP will be installed, and the researcher will hold a mask in the position in which it is coherent, explaining the method to the patient and allowing their gradual adaptation. Patients will adapt for a few minutes to make sure the mask is consistent with the specifications, so that the patient is comfortable. Participants in the intervention group will start with a PEEP of 1cmH2O that will increase by 2 cmH2O until a PEEP of 10 cmH2O is reached. Therefore, participants in the intervention group will remain with CPAP, PEEP of 10cmH2O, FiO2 0.21, for a period of 40 minutes.
| Study group | Role | What they receive |
|---|---|---|
| Continuous Positive Airway Pressure (CPAP) | Experimental | Participants in the intervention group will use CPAP device, for a period of 40 minutes, with the following parameters: PEEP of 10cmH2O and FiO2 0.21. Receives: Device: Continuous Positive Airway Pressure (CPAP) |
| CONTROL | Placebo comparator | Participants in the control group will use CPAP device, for a period of 40 minutes, with the following parameters: PEEP of 1cmH2O and FiO2 0.21. Receives: Device: Continuous Positive Airway Pressure (CPAP) |
What is being measured
The primary outcome is the main question the study is designed to answer.
Exercise capacity
Exercise capacity will be assessed by the VO2max, evaluated during a cardiopulmonary exercise test. Gas capture measurement will be performed by an ergospirometric system using a VO2000 (Medical Graphics Corporation, St. Paul, Minnesota-USA) gas analyzer, which provides information on ventilatory variables every 20s.
Measured: Immediately after intervention
Secondary outcomes (5)
Exercise tolerance
Exercise tolerance will be assessed by measuring distance in the cardiopulmonary exercise test.
Measured: Immediately after intervention
Exercise duration
Exercise tolerance will be assessed by measuring time in the cardiopulmonary exercise test.
Measured: Immediately after intervention
Peripheral oxygen saturation
Peripheral oxygen saturation will be evaluated at rest, every 60s and at the end of the CPET using a portable pulse oximeter (Nonin®, Minneapolis, USA).
Measured: Immediately after intervention
Peak expiratory flow
Peak expiratory flow will be assessed using a peak flow meter immediately after CPET.
Measured: Immediately after intervention
Subjective feeling of dyspnea
Subjective feeling of dyspnea will be evaluated using the Modified Borg Scale, which uses a graduation from 0 to 10, at the end of the CPET.
Measured: Immediately after intervention
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 Jul 2017
- Study start25 Jul 2017
- Primary completion1 Aug 2019
- Study completion1 Aug 2019
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (15)Papers the sponsor has linked to this study.
- Other trials for AsthmaStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Model description
- Patients will be randomized, through a sealed envelope, to initially compose the intervention group or the control group. The sequential order of randomization will be kept confidential with a single investigator, so that the other professionals involved and responsible for data collection will be blinded throughout the study period. Individuals who initially composed the intervention group will then perform, in a second moment, the procedures of the control group.
- Masking
- Double blind
- Who is masked
- Investigator, Outcomes assessor
- Enrolment
- 13 participants (actual)
Sponsor and investigators
- Lead sponsor
- Pontificia Universidade Católica do Rio Grande do Sul
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Marcio Vinicius Fagundes Donadio, Pontificia Universidade Católica do Rio Grande do Sul
- Investigators
- Marcio VF Donadio, PHD, Principal investigator, Pontificia Universidade Católica do Rio Grande do Sul
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03215303
- Sponsor's protocol ID
- CPAP
- Acronym
- CPAP-STRA
- Status last verified
- Feb 2020
- First submitted
- 7 Jul 2017
- Last updated
- 25 Feb 2020
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Bateman ED, Hurd SS, Barnes PJ, Bousquet J, Drazen JM, FitzGerald JM, Gibson P, Ohta K, O'Byrne P, Pedersen SE, Pizzichini E, Sullivan SD, Wenzel SE, Zar HJ. Global strategy for asthma management and prevention: GINA executive summary. Eur Respir J. 2008 Jan;31(1):143-78. doi: 10.1183/09031936.00138707.
PubMed 18166595Worldwide variation in prevalence of symptoms of asthma, allergic rhinoconjunctivitis, and atopic eczema: ISAAC. The International Study of Asthma and Allergies in Childhood (ISAAC) Steering Committee. Lancet. 1998 Apr 25;351(9111):1225-32.
PubMed 9643741McDonald VM, Vertigan AE, Gibson PG. How to set up a severe asthma service. Respirology. 2011 Aug;16(6):900-11. doi: 10.1111/j.1440-1843.2011.02012.x.
PubMed 21692918Jang AS, Lee JH, Park SW, Shin MY, Kim DJ, Park CS. Severe airway hyperresponsiveness in school-aged boys with a high body mass index. Korean J Intern Med. 2006 Mar;21(1):10-4. doi: 10.3904/kjim.2006.21.1.10.
PubMed 16646558O'Donnell DE, Sanii R, Giesbrecht G, Younes M. Effect of continuous positive airway pressure on respiratory sensation in patients with chronic obstructive pulmonary disease during submaximal exercise. Am Rev Respir Dis. 1988 Nov;138(5):1185-91. doi: 10.1164/ajrccm/138.5.1185.
PubMed 3059891Wang CH, Lin HC, Huang TJ, Yang CT, Yu CT, Kuo HP. Differential effects of nasal continuous positive airway pressure on reversible or fixed upper and lower airway obstruction. Eur Respir J. 1996 May;9(5):952-9. doi: 10.1183/09031936.96.09050952.
PubMed 8793457Busk M, Busk N, Puntenney P, Hutchins J, Yu Z, Gunst SJ, Tepper RS. Use of continuous positive airway pressure reduces airway reactivity in adults with asthma. Eur Respir J. 2013 Feb;41(2):317-22. doi: 10.1183/09031936.00059712. Epub 2012 Jul 26.
PubMed 22835615Pianosi PT, Davis HS. Determinants of physical fitness in children with asthma. Pediatrics. 2004 Mar;113(3 Pt 1):e225-9. doi: 10.1542/peds.113.3.e225.
PubMed 14993581Ferrazza AM, Martolini D, Valli G, Palange P. Cardiopulmonary exercise testing in the functional and prognostic evaluation of patients with pulmonary diseases. Respiration. 2009;77(1):3-17. doi: 10.1159/000186694. Epub 2009 Jan 14.
PubMed 19145106Hallstrand TS, Bates PW, Schoene RB. Aerobic conditioning in mild asthma decreases the hyperpnea of exercise and improves exercise and ventilatory capacity. Chest. 2000 Nov;118(5):1460-9. doi: 10.1378/chest.118.5.1460.
PubMed 11083702Chatkin M, Menezes AM, Albernaz E, Victora CG, Barros FC. [Asthmatic children's risk factors for emergency room visits, Brazil]. Rev Saude Publica. 2000 Oct;34(5):491-8. doi: 10.1590/s0034-89102000000500009. Portuguese.
PubMed 11105113Schuh C, Fritscher LG, Chapman KR, Fritscher CC. The prevalence of asthma and atopy in schoolchildren from Porto Alegre, Brazil, has plateaued. Respir Med. 2015 Mar;109(3):308-11. doi: 10.1016/j.rmed.2015.01.014. Epub 2015 Jan 31.
PubMed 25683031Barbosa e Silva O, Saraiva LC, Sobral Filho DC. Treadmill stress test in children and adolescents: higher tolerance on exertion with ramp protocol. Arq Bras Cardiol. 2007 Dec;89(6):391-7. English, Portuguese.
PubMed 18317622Beaver WL, Wasserman K, Whipp BJ. A new method for detecting anaerobic threshold by gas exchange. J Appl Physiol (1985). 1986 Jun;60(6):2020-7. doi: 10.1152/jappl.1986.60.6.2020.
PubMed 3087938Santuz P, Baraldi E, Filippone M, Zacchello F. Exercise performance in children with asthma: is it different from that of healthy controls? Eur Respir J. 1997 Jun;10(6):1254-60. doi: 10.1183/09031936.97.10061254.
PubMed 9192925
Study at a glance
From the registry record, last updated by the sponsor on 25 Feb 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effects of Continuous Positive Airway Pressure (CPAP) on Exercise Capacity of Children and Adolescents With Severe Therapy-resistant Asthma
- ClinicalTrials.gov ID
- NCT03215303
- Acronym / sponsor ID
- CPAP-STRA / CPAP
- Conditions
- Asthma
- Keywords
- Asthma, Continuous positive airway pressure, Oxygen consumption
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 13 participants (actual)
- Lead sponsor
- Pontificia Universidade Católica do Rio Grande do SulUniversity, hospital or other
- Study start
- 25 Jul 2017 (actual)
- Primary completion
- 1 Aug 2019 (actual)
- Study completion
- 1 Aug 2019 (actual)
- First posted
- 12 Jul 2017 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to verify the effects of continuous positive airway pressure (CPAP) on exercise capacity of children and adolescents with severe therapy-resistant asthma (STRA). A randomized, controlled, crossover clinical trial will be conducted. We expect the use of CPAP to increase exercise capacity in children and adolescents with STRA.
Detailed description
This project aims to verify the effects of continuous positive airway pressure (CPAP) on exercise capacity of children and adolescents with severe asthma therapy-resistant (STRA). A randomized, controlled, crossover clinical trial will be conducted. Children and adolescents between 6 and 18 years old, with a diagnosis of STRA, will be included in the study. Patients wil be recruited in the São Lucas Hospital (HSL) Asthma Outpatient Clinic of the Pontifical Catholic University of Rio Grande do Sul. Patients who accept to participate in the study will perform a medical consultation according to routine outpatient asthma clinic, anthropometric evaluation and pulmonary function tests. Afterwards, they will be randomized into control and intervention groups. Participants in the intervention group will use noninvasive ventilation (NIV) in CPAP mode with 10cmH2O of positive end-expiratory pressure (PEEP), fraction of inspired oxygen (FiO2) of 0.21, for a period of 40 minutes. Participants in the control group will use NIV (CPAP), with a minimum PEEP of 1cmH20 and a FiO2 of 0.21 also for 40 minutes. Afterwards, patients from both groups will perform a maximum cardiopulmonary exercise test (CPET). A sample size of 18 individuals to be included in the study was estimated. The variables studied will be maximal oxygen consumption and the anaerobic threshold (that measures exercise capacity), distance and time (to measure exercise tolerance), peripheral oxygen saturation, peak expiratory flow and the sensation of dyspnea at the end of the CPET.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Double blind (investigator, outcomes assessor)
- Number of arms
- 2
- Model description
- Patients will be randomized, through a sealed envelope, to initially compose the intervention group or the control group. The sequential order of randomization will be kept confidential with a single investigator, so that the other professionals involved and responsible for data collection will be blinded throughout the study period. Individuals who initially composed the intervention group will then perform, in a second moment, the procedures of the control group.
| Arm | Type | Receives |
|---|---|---|
| Continuous Positive Airway Pressure (CPAP) | Experimental | Device: Continuous Positive Airway Pressure (CPAP)Participants in the intervention group will use CPAP device, for a period of 40 minutes, with the following parameters: PEEP of 10cmH2O and FiO2 0.21. |
| CONTROL | Placebo comparator | Device: Continuous Positive Airway Pressure (CPAP)Participants in the control group will use CPAP device, for a period of 40 minutes, with the following parameters: PEEP of 1cmH2O and FiO2 0.21. |
Who may qualify
- Ages
- 6 to 18 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult
Key inclusion criteria (5 listed)
- Individuals with a clinical diagnosis of severe therapy-resistant asthma (STRA), of both sexes, aged between 6 and 18 years, who are under regular follow-up in the asthma outpatient clinic at São Lucas Hospital, PUCRS.
- The criteria for the classification of STRA is based on the Global Initiative for Asthma (GINA) guidelines:
- Asthma requiring treatment in steps 4-5 of GINA (≥800 mg/day of budesonide or equivalent, associated with long-acting ß2-adrenergic agonist (LABA);
- Use of continuous oral corticoid or omalizumab, presenting uncontrolled disease;
- Uncontrolled disease characterized by: 1) persistent symptoms or asthma control test (ACT) <20 (> 3 months); 2) acute exacerbations (with intensive care unit admission, at least 2 hospitalizations, or 2 courses of oral corticoid over the last 12 months); Or 3) non-reversible obstruction of pulmonary function, even after corticoid use.
Key exclusion criteria (1 listed)
- Subjects with cognitive/motor limitations or other chronic diseases (neurological diseases, cardiac anomalies, congenital or immunodeficiencies), which may compromise the evaluation of asthma, as well as the procedures proposed by the present study.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Continuous Positive Airway Pressure (CPAP)In the first moment, CPAP will be installed, and the researcher will hold a mask in the position in which it is coherent, explaining the method to the patient and allowing their gradual adaptation. Patients will adapt for a few minutes to make sure the mask is consistent with the specifications, so that the patient is comfortable. Participants in the intervention group will start with a PEEP of 1cmH2O that will increase by 2 cmH2O until a PEEP of 10 cmH2O is reached. Therefore, participants in the intervention group will remain with CPAP, PEEP of 10cmH2O, FiO2 0.21, for a period of 40 minutes. | Device | CONTROL, Continuous Positive Airway Pressure (CPAP) |
Primary outcome
Exercise capacity
Time frame: Immediately after intervention
Exercise capacity will be assessed by the VO2max, evaluated during a cardiopulmonary exercise test. Gas capture measurement will be performed by an ergospirometric system using a VO2000 (Medical Graphics Corporation, St. Paul, Minnesota-USA) gas analyzer, which provides information on ventilatory variables every 20s.
5 secondary outcomes
Exercise tolerance
Time frame: Immediately after intervention
Exercise duration
Time frame: Immediately after intervention
Peripheral oxygen saturation
Time frame: Immediately after intervention
Peak expiratory flow
Time frame: Immediately after intervention
Subjective feeling of dyspnea
Time frame: Immediately after intervention
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 25 Feb 2020.
- Background: PubMed 18166595Bateman ED, Hurd SS, Barnes PJ, Bousquet J, Drazen JM, FitzGerald JM, Gibson P, Ohta K, O'Byrne P, Pedersen SE, Pizzichini E, Sullivan SD, Wenzel SE, Zar HJ. Global strategy for asthma management and prevention: GINA executive summary. Eur Respir J. 2008 Jan;31(1):143-78. doi: 10.1183/09031936.00138707.
- Background: PubMed 9643741Worldwide variation in prevalence of symptoms of asthma, allergic rhinoconjunctivitis, and atopic eczema: ISAAC. The International Study of Asthma and Allergies in Childhood (ISAAC) Steering Committee. Lancet. 1998 Apr 25;351(9111):1225-32.
- Background: PubMed 21692918McDonald VM, Vertigan AE, Gibson PG. How to set up a severe asthma service. Respirology. 2011 Aug;16(6):900-11. doi: 10.1111/j.1440-1843.2011.02012.x.
- Background: PubMed 16646558Jang AS, Lee JH, Park SW, Shin MY, Kim DJ, Park CS. Severe airway hyperresponsiveness in school-aged boys with a high body mass index. Korean J Intern Med. 2006 Mar;21(1):10-4. doi: 10.3904/kjim.2006.21.1.10.
- Background: PubMed 3059891O'Donnell DE, Sanii R, Giesbrecht G, Younes M. Effect of continuous positive airway pressure on respiratory sensation in patients with chronic obstructive pulmonary disease during submaximal exercise. Am Rev Respir Dis. 1988 Nov;138(5):1185-91. doi: 10.1164/ajrccm/138.5.1185.
- Background: PubMed 8793457Wang CH, Lin HC, Huang TJ, Yang CT, Yu CT, Kuo HP. Differential effects of nasal continuous positive airway pressure on reversible or fixed upper and lower airway obstruction. Eur Respir J. 1996 May;9(5):952-9. doi: 10.1183/09031936.96.09050952.
- Background: PubMed 22835615Busk M, Busk N, Puntenney P, Hutchins J, Yu Z, Gunst SJ, Tepper RS. Use of continuous positive airway pressure reduces airway reactivity in adults with asthma. Eur Respir J. 2013 Feb;41(2):317-22. doi: 10.1183/09031936.00059712. Epub 2012 Jul 26.
- Background: PubMed 14993581Pianosi PT, Davis HS. Determinants of physical fitness in children with asthma. Pediatrics. 2004 Mar;113(3 Pt 1):e225-9. doi: 10.1542/peds.113.3.e225.
- Background: PubMed 19145106Ferrazza AM, Martolini D, Valli G, Palange P. Cardiopulmonary exercise testing in the functional and prognostic evaluation of patients with pulmonary diseases. Respiration. 2009;77(1):3-17. doi: 10.1159/000186694. Epub 2009 Jan 14.
- Background: PubMed 11083702Hallstrand TS, Bates PW, Schoene RB. Aerobic conditioning in mild asthma decreases the hyperpnea of exercise and improves exercise and ventilatory capacity. Chest. 2000 Nov;118(5):1460-9. doi: 10.1378/chest.118.5.1460.
- Background: PubMed 11105113Chatkin M, Menezes AM, Albernaz E, Victora CG, Barros FC. [Asthmatic children's risk factors for emergency room visits, Brazil]. Rev Saude Publica. 2000 Oct;34(5):491-8. doi: 10.1590/s0034-89102000000500009. Portuguese.
- Background: PubMed 25683031Schuh C, Fritscher LG, Chapman KR, Fritscher CC. The prevalence of asthma and atopy in schoolchildren from Porto Alegre, Brazil, has plateaued. Respir Med. 2015 Mar;109(3):308-11. doi: 10.1016/j.rmed.2015.01.014. Epub 2015 Jan 31.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Marcio VF Donadio, PHD principal investigator
Pontificia Universidade Católica do Rio Grande do Sul
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Continuous Positive Airway Pressure (CPAP) in people with Asthma, run by Pontificia Universidade Católica do Rio Grande do Sul at 1 site in Brazil.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 25 Feb 2020. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Brazil. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Exercise capacity (time frame: Immediately after intervention). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT03215303, which also lists 15 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 25 Feb 2020.