Heart FailureCLASSNCT02693262
Comparing Rate Response With CLS Versus Accelerometer ICD Settings in Heart Failure Patients With BIOTRONIK CRT-Ds
A study testing CLS Mode on Biotronik CRT-D and Accelerometer Mode on Biotronik CRT-D in people with Heart Failure and ICD, run by University of California, San Diego at 1 site in United States.
Trial summary
Dr. Jonathan Hsu and Dr. Eric Adler are conducting a research study to find out more about how implantable cardiac defibrillator (ICD) settings can be adjusted to improve patient cardiovascular health and quality of life. Read more about this study
- Who is it for?
- Ages 18 to 99 yearsHealthy volunteers can take part
- Conditions the study is for
- Heart Failure, ICD, Chronotropic Incompetence
- What is being tested?
- CLS Mode on Biotronik CRT-D and Accelerometer Mode on Biotronik CRT-D
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 12 participants
- Where
- 1 siteUnited States
- Study dates
- Jul 2016to 24 Jul 2020
- Phase
- Interventional
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
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 18 to 99 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Patients with a BIOTRONIK CRT-D device (capable of CLS and accelerometer rate responsive pacing)
- Patients at least 18 years old
- Patients who have plausible symptoms of CI based on previous monitoring and clinical symptoms
Who cannot join
- Pregnant patients
- Patients who are unwilling/unable to provide informed consent
- Patients who are unable to complete study related procedures
- Current persistent atrial fibrillation
Trial locations and contacts
1 site in 1 country.
United States1 site
Sulpizio Cardiovascular Center
La Jolla, California, 92037
About this study
Official title: Rate Response With CLS Versus Accelerometer and Effect on Both Subjective Symptoms and Objective Outcomes in a Heart Failure Population Implanted With Cardiac Resynchronization With Defibrillator Device: The CLASS Trial
Dr. Jonathan Hsu and Dr. Eric Adler are conducting a research study to find out more about how implantable cardiac defibrillator (ICD) settings can be adjusted to improve patient cardiovascular health and quality of life. Patients are being asked to participate in this study if they have a history of heart failure and have or are scheduled to be implanted with a BIOTRONIK ICD that is capable of closed loop stimulation (CLS). CLS is a device setting that works with the cardiovascular system to optimize their heart rate during physical activity. This study is comparing BIOTRONIK's CLS setting to a standard accelerometer setting, which also is able to adjust the heart rate by movement sensors, when necessary. This study has been initiated by Dr. Hsu and Dr. Adler and is financially supported by BIOTRONIK, Inc. There will be approximately 15 participants in this trial.
Read the detailed description
This study is a prospective, randomized, single-blind crossover study intended to enroll patients who are implanted or are scheduled to be implanted with a Biotronik CLS and accelerometer capable CRT-D device. Patients will serve as their own control group with regard to modes of rate-adaptive pacing. Patients with a previously implanted Biotronik CRT-D device with CLS-capability will be recruited from health care institutions in San Diego and all dedicated functional testing will be performed at the University of California, San Diego (UCSD). The goal enrollment target for analysis will be 15 patients, with up to 20 patients enrolled to allow for withdrawals.
The purpose of this study is to evaluate whether changes to an implanted ICD can improve the functional status of patients with suspected chronotropic incompetence (CI). CI is a condition in which the heart rate is unable to adequately respond to meet the patient's physical demands, such as walking, climbing stairs, or doing household chores. CI is common in patients with cardiovascular disease, particularly in patients with heart failure. Common clinical management of patients with suspected CI is to activate an accelerometer setting in the cardiac resynchronization therapy with defibrillator (CRT-D) device. An accelerometer will adjust the heart rate to fit the physiological circumstances and needs of the patient based on patient movement only. BIOTRONIK is a company that has developed a novel technology included in the settings for CRT-D devices that offers CLS as an alternative to a standard accelerometer. CLS utilizes sensed electrical properties of the heart in order to assess what may be the best heart rate for both physical and mental demands. This study is designed to compare whether patients will benefit from CLS when compared with standard accelerometer technology.
- Conditions
- Heart Failure, ICD, Chronotropic Incompetence
- Being tested
- CLS Mode on Biotronik CRT-D, Accelerometer Mode on Biotronik CRT-D
- Keywords
- defibrillator, heart failure, ICD, CRT-D, cardiac resynchronization therapy, rate response, CLS, closed-loop stimulation, accelerometer, chronotropic incompetence
- Medical subject headings
- Heart Failure
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
CLS Mode on Biotronik CRT-DDevice
Setting changed and monitored. Quality of life evaluated through CPET, 6 Minute Walk Test, and Rand 36 Questionnaire.
Accelerometer Mode on Biotronik CRT-DDevice
Setting changed and monitored. Quality of life evaluated through CPET, 6 Minute Walk Test, and Rand 36 Questionnaire.
| Study group | Role | What they receive |
|---|---|---|
| CLS Mode on Biotronik CRT-D | Experimental | All 15 patients will be randomized to this group. Their device will be set in the CLS mode for 1 week. Receives: Device: CLS Mode on Biotronik CRT-D |
| Accelerometer Mode on Biotronik CRT-D | Active comparator | All 15 patients will be randomized to this group. Their device will be set in the accelerometer rate responsive mode for 1 week. Receives: Device: Accelerometer Mode on Biotronik CRT-D |
What is being measured
The primary outcome is the main question the study is designed to answer.
Six-minute Walk Distance (6MWD) Test
Cardiovascular health benefits were measured by the six-minute walk distance (6MWD) test. The 6MWD is a standardized field test to evaluate functional exercise performance. Subjects are instructed to walk as far as possible in 6 min on a flat surface.
This test was performed twice, once at the end of each intervention period.
Measured: Measured on day 14 and day 21.
RAND-36 Questionnaire
Quality of life of subjects was measured by the RAND-36 which is a generic 36-item questionnaire that measures eight health-related domains stratified by physical health (physical functioning, role limitations due to physical health, pain, and general health) and emotional health (vitality, role limitations due to emotional problems, social functioning, and mental health). Each scale is directly transformed into a 0-100 scale for a total score range of 0-800. Higher scores represent a more favorable health status.
This test was performed twice, once at the end of each intervention period.
Measured: Performed on day 14 and day 21.
Cardiopulmonary Exercise Testing (CPET)
Cardiovascular health benefits were determined by measuring the peak heart rate (HR) during Cardiopulmonary exercise testing (CPET). The CPET is performed on a standard treadmill according to the Naughton protocol. During the test, patients inspired room air through a low-resistance mask, and expired oxygen and carbon dioxide partial pressures were measured with a gas analyzer. HR was recorded every 30 seconds during exercise. All patients were encouraged to exercise to maximal effort.
This test was performed twice, once at the end of each intervention period.
Measured: Performed on day 14 and day 21.
Patient Preference
At the end of the study, patients were asked about personal preference regarding CLS over DDDR.
Measured: Performed on day 21.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted26 Feb 2016 (estimated)
- Study startJul 2016
- Primary completion24 Jul 2020
- Study completion24 Jul 2020
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (8)Papers the sponsor has linked to this study.
- Other trials for Heart FailureStudies 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
- Masking
- Single blind
- Who is masked
- Participant
- Enrolment
- 12 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of California, San Diego
- Sponsor type
- University, hospital or other
- Collaborators
- Biotronik, Inc.
- Responsible party
- Principal investigator, Jonathan Hsu, University of California, San Diego
- Investigators
- Jonathan Hsu, MD, Principal investigator, University of California, San Diego
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02693262
- Sponsor's protocol ID
- 151774
- Acronym
- CLASS
- Status last verified
- Jul 2021
- First submitted
- 24 Dec 2015
- Last updated
- 5 Aug 2021
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
- Individual data sharing
- No
Publications
Alt E. What is the ideal rate-adaptive sensor for patients with implantable cardioverter defibrillators: lessons from cardiac pacing. Am J Cardiol. 1999 Mar 11;83(5B):17D-23D. doi: 10.1016/s0002-9149(98)01038-8.
PubMed 10089835Epstein AE, DiMarco JP, Ellenbogen KA, Estes NA 3rd, Freedman RA, Gettes LS, Gillinov AM, Gregoratos G, Hammill SC, Hayes DL, Hlatky MA, Newby LK, Page RL, Schoenfeld MH, Silka MJ, Stevenson LW, Sweeney MO, Smith SC Jr, Jacobs AK, Adams CD, Anderson JL, Buller CE, Creager MA, Ettinger SM, Faxon DP, Halperin JL, Hiratzka LF, Hunt SA, Krumholz HM, Kushner FG, Lytle BW, Nishimura RA, Ornato JP, Page RL, Riegel B, Tarkington LG, Yancy CW; American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Writing Committee to Revise the ACC/AHA/NASPE 2002 Guideline Update for Implantation of Cardiac Pacemakers and Antiarrhythmia Devices); American Association for Thoracic Surgery; Society of Thoracic Surgeons. ACC/AHA/HRS 2008 Guidelines for Device-Based Therapy of Cardiac Rhythm Abnormalities: a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Writing Committee to Revise the ACC/AHA/NASPE 2002 Guideline Update for Implantation of Cardiac Pacemakers and Antiarrhythmia Devices): developed in collaboration with the American Association for Thoracic Surgery and Society of Thoracic Surgeons. Circulation. 2008 May 27;117(21):e350-408. doi: 10.1161/CIRCUALTIONAHA.108.189742. Epub 2008 May 15. No abstract available.
PubMed 18483207Freedman RA, Hopper DL, Mah J, Hummel J, Wilkoff BL. Assessment of pacemaker chronotropic response: implementation of the Wilkoff mathematical model. Pacing Clin Electrophysiol. 2001 Dec;24(12):1748-54. doi: 10.1046/j.1460-9592.2001.01748.x.
PubMed 11817808Maass AH, Buck S, Nieuwland W, Brugemann J, van Veldhuisen DJ, Van Gelder IC. Importance of heart rate during exercise for response to cardiac resynchronization therapy. J Cardiovasc Electrophysiol. 2009 Jul;20(7):773-80. doi: 10.1111/j.1540-8167.2008.01422.x. Epub 2009 Feb 2.
PubMed 19207785Coenen M, Malinowski K, Spitzer W, Schuchert A, Schmitz D, Anelli-Monti M, Maier SK, Estlinbaum W, Bauer A, Muehling H, Kalscheur F, Puerner K, Boergel J, Osswald S. Closed loop stimulation and accelerometer-based rate adaptation: results of the PROVIDE study. Europace. 2008 Mar;10(3):327-33. doi: 10.1093/europace/eun024. Epub 2008 Feb 13.
PubMed 18272507Tse HF, Siu CW, Lee KL, Fan K, Chan HW, Tang MO, Tsang V, Lee SW, Lau CP. The incremental benefit of rate-adaptive pacing on exercise performance during cardiac resynchronization therapy. J Am Coll Cardiol. 2005 Dec 20;46(12):2292-7. doi: 10.1016/j.jacc.2005.02.097.
PubMed 16360061Keteyian SJ, Isaac D, Thadani U, Roy BA, Bensimhon DR, McKelvie R, Russell SD, Hellkamp AS, Kraus WE; HF-ACTION Investigators. Safety of symptom-limited cardiopulmonary exercise testing in patients with chronic heart failure due to severe left ventricular systolic dysfunction. Am Heart J. 2009 Oct;158(4 Suppl):S72-7. doi: 10.1016/j.ahj.2009.07.014.
PubMed 19782792Hsu JC, Darden D, Alegre M, Birgersdotter-Green U, Feld GK, Hoffmayer KS, Han F, Krummen D, Raissi F, Ho G, Taub PR, Urey MA, Adler E. Effect of closed loop stimulation versus accelerometer on outcomes with cardiac resynchronization therapy: the CLASS trial. J Interv Card Electrophysiol. 2021 Sep;61(3):479-485. doi: 10.1007/s10840-020-00829-4. Epub 2020 Aug 5.
PubMed 32757086
Study at a glance
From the registry record, last updated by the sponsor on 5 Aug 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Rate Response With CLS Versus Accelerometer and Effect on Both Subjective Symptoms and Objective Outcomes in a Heart Failure Population Implanted With Cardiac Resynchronization With Defibrillator Device: The CLASS Trial
- ClinicalTrials.gov ID
- NCT02693262
- Acronym / sponsor ID
- CLASS / 151774
- Conditions
- Heart Failure, ICD, Chronotropic Incompetence
- Keywords
- defibrillator, heart failure, ICD, CRT-D, cardiac resynchronization therapy, rate response, CLS, closed-loop stimulation
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 12 participants (actual)
- Lead sponsor
- University of California, San DiegoUniversity, hospital or other
- Collaborators
- Biotronik, Inc.
- Study start
- Jul 2016 (actual)
- Primary completion
- 24 Jul 2020 (actual)
- Study completion
- 24 Jul 2020 (actual)
- First posted
- 26 Feb 2016 (estimated)
- Results
- Posted 5 Aug 2021
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Dr. Jonathan Hsu and Dr. Eric Adler are conducting a research study to find out more about how implantable cardiac defibrillator (ICD) settings can be adjusted to improve patient cardiovascular health and quality of life. Patients are being asked to participate in this study if they have a history of heart failure and have or are scheduled to be implanted with a BIOTRONIK ICD that is capable of closed loop stimulation (CLS). CLS is a device setting that works with the cardiovascular system to optimize their heart rate during physical activity. This study is comparing BIOTRONIK's CLS setting to a standard accelerometer setting, which also is able to adjust the heart rate by movement sensors, when necessary. This study has been initiated by Dr. Hsu and Dr. Adler and is financially supported by BIOTRONIK, Inc. There will be approximately 15 participants in this trial.
Detailed description
This study is a prospective, randomized, single-blind crossover study intended to enroll patients who are implanted or are scheduled to be implanted with a Biotronik CLS and accelerometer capable CRT-D device. Patients will serve as their own control group with regard to modes of rate-adaptive pacing. Patients with a previously implanted Biotronik CRT-D device with CLS-capability will be recruited from health care institutions in San Diego and all dedicated functional testing will be performed at the University of California, San Diego (UCSD). The goal enrollment target for analysis will be 15 patients, with up to 20 patients enrolled to allow for withdrawals.
The purpose of this study is to evaluate whether changes to an implanted ICD can improve the functional status of patients with suspected chronotropic incompetence (CI). CI is a condition in which the heart rate is unable to adequately respond to meet the patient's physical demands, such as walking, climbing stairs, or doing household chores. CI is common in patients with cardiovascular disease, particularly in patients with heart failure. Common clinical management of patients with suspected CI is to activate an accelerometer setting in the cardiac resynchronization therapy with defibrillator (CRT-D) device. An accelerometer will adjust the heart rate to fit the physiological circumstances and needs of the patient based on patient movement only. BIOTRONIK is a company that has developed a novel technology included in the settings for CRT-D devices that offers CLS as an alternative to a standard accelerometer. CLS utilizes sensed electrical properties of the heart in order to assess what may be the best heart rate for both physical and mental demands. This study is designed to compare whether patients will benefit from CLS when compared with standard accelerometer technology.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Single blind (participant)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| CLS Mode on Biotronik CRT-D | Experimental | Device: CLS Mode on Biotronik CRT-DAll 15 patients will be randomized to this group. Their device will be set in the CLS mode for 1 week. |
| Accelerometer Mode on Biotronik CRT-D | Active comparator | Device: Accelerometer Mode on Biotronik CRT-DAll 15 patients will be randomized to this group. Their device will be set in the accelerometer rate responsive mode for 1 week. |
Who may qualify
- Ages
- 18 to 99 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- Patients with a BIOTRONIK CRT-D device (capable of CLS and accelerometer rate responsive pacing)
- Patients at least 18 years old
- Patients who have plausible symptoms of CI based on previous monitoring and clinical symptoms
Key exclusion criteria (4 listed)
- Pregnant patients
- Patients who are unwilling/unable to provide informed consent
- Patients who are unable to complete study related procedures
- Current persistent atrial fibrillation
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 |
|---|---|---|
| CLS Mode on Biotronik CRT-DSetting changed and monitored. Quality of life evaluated through CPET, 6 Minute Walk Test, and Rand 36 Questionnaire. | Device | CLS Mode on Biotronik CRT-D |
| Accelerometer Mode on Biotronik CRT-DSetting changed and monitored. Quality of life evaluated through CPET, 6 Minute Walk Test, and Rand 36 Questionnaire. | Device | Accelerometer Mode on Biotronik CRT-D |
Primary outcome
Six-minute Walk Distance (6MWD) Test
Time frame: Measured on day 14 and day 21.
Cardiovascular health benefits were measured by the six-minute walk distance (6MWD) test. The 6MWD is a standardized field test to evaluate functional exercise performance. Subjects are instructed to walk as far as possible in 6 min on a flat surface. This test was performed twice, once at the end of each intervention period.
RAND-36 Questionnaire
Time frame: Performed on day 14 and day 21.
Quality of life of subjects was measured by the RAND-36 which is a generic 36-item questionnaire that measures eight health-related domains stratified by physical health (physical functioning, role limitations due to physical health, pain, and general health) and emotional health (vitality, role limitations due to emotional problems, social functioning, and mental health). Each scale is directly transformed into a 0-100 scale for a total score range of 0-800. Higher scores represent a more favorable health status. This test was performed twice, once at the end of each intervention period.
Cardiopulmonary Exercise Testing (CPET)
Time frame: Performed on day 14 and day 21.
Cardiovascular health benefits were determined by measuring the peak heart rate (HR) during Cardiopulmonary exercise testing (CPET). The CPET is performed on a standard treadmill according to the Naughton protocol. During the test, patients inspired room air through a low-resistance mask, and expired oxygen and carbon dioxide partial pressures were measured with a gas analyzer. HR was recorded every 30 seconds during exercise. All patients were encouraged to exercise to maximal effort. This test was performed twice, once at the end of each intervention period.
Patient Preference
Time frame: Performed on day 21.
At the end of the study, patients were asked about personal preference regarding CLS over DDDR.
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 5 Aug 2021.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Background: PubMed 10089835Alt E. What is the ideal rate-adaptive sensor for patients with implantable cardioverter defibrillators: lessons from cardiac pacing. Am J Cardiol. 1999 Mar 11;83(5B):17D-23D. doi: 10.1016/s0002-9149(98)01038-8.
- Background: PubMed 18483207Epstein AE, DiMarco JP, Ellenbogen KA, Estes NA 3rd, Freedman RA, Gettes LS, Gillinov AM, Gregoratos G, Hammill SC, Hayes DL, Hlatky MA, Newby LK, Page RL, Schoenfeld MH, Silka MJ, Stevenson LW, Sweeney MO, Smith SC Jr, Jacobs AK, Adams CD, Anderson JL, Buller CE, Creager MA, Ettinger SM, Faxon DP, Halperin JL, Hiratzka LF, Hunt SA, Krumholz HM, Kushner FG, Lytle BW, Nishimura RA, Ornato JP, Page RL, Riegel B, Tarkington LG, Yancy CW; American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Writing Committee to Revise the ACC/AHA/NASPE 2002 Guideline Update for Implantation of Cardiac Pacemakers and Antiarrhythmia Devices); American Association for Thoracic Surgery; Society of Thoracic Surgeons. ACC/AHA/HRS 2008 Guidelines for Device-Based Therapy of Cardiac Rhythm Abnormalities: a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Writing Committee to Revise the ACC/AHA/NASPE 2002 Guideline Update for Implantation of Cardiac Pacemakers and Antiarrhythmia Devices): developed in collaboration with the American Association for Thoracic Surgery and Society of Thoracic Surgeons. Circulation. 2008 May 27;117(21):e350-408. doi: 10.1161/CIRCUALTIONAHA.108.189742. Epub 2008 May 15. No abstract available.
- Background: PubMed 11817808Freedman RA, Hopper DL, Mah J, Hummel J, Wilkoff BL. Assessment of pacemaker chronotropic response: implementation of the Wilkoff mathematical model. Pacing Clin Electrophysiol. 2001 Dec;24(12):1748-54. doi: 10.1046/j.1460-9592.2001.01748.x.
- Background: PubMed 19207785Maass AH, Buck S, Nieuwland W, Brugemann J, van Veldhuisen DJ, Van Gelder IC. Importance of heart rate during exercise for response to cardiac resynchronization therapy. J Cardiovasc Electrophysiol. 2009 Jul;20(7):773-80. doi: 10.1111/j.1540-8167.2008.01422.x. Epub 2009 Feb 2.
- Background: PubMed 18272507Coenen M, Malinowski K, Spitzer W, Schuchert A, Schmitz D, Anelli-Monti M, Maier SK, Estlinbaum W, Bauer A, Muehling H, Kalscheur F, Puerner K, Boergel J, Osswald S. Closed loop stimulation and accelerometer-based rate adaptation: results of the PROVIDE study. Europace. 2008 Mar;10(3):327-33. doi: 10.1093/europace/eun024. Epub 2008 Feb 13.
- Background: PubMed 16360061Tse HF, Siu CW, Lee KL, Fan K, Chan HW, Tang MO, Tsang V, Lee SW, Lau CP. The incremental benefit of rate-adaptive pacing on exercise performance during cardiac resynchronization therapy. J Am Coll Cardiol. 2005 Dec 20;46(12):2292-7. doi: 10.1016/j.jacc.2005.02.097.
- Background: PubMed 19782792Keteyian SJ, Isaac D, Thadani U, Roy BA, Bensimhon DR, McKelvie R, Russell SD, Hellkamp AS, Kraus WE; HF-ACTION Investigators. Safety of symptom-limited cardiopulmonary exercise testing in patients with chronic heart failure due to severe left ventricular systolic dysfunction. Am Heart J. 2009 Oct;158(4 Suppl):S72-7. doi: 10.1016/j.ahj.2009.07.014.
- Derived from this study: PubMed 32757086Hsu JC, Darden D, Alegre M, Birgersdotter-Green U, Feld GK, Hoffmayer KS, Han F, Krummen D, Raissi F, Ho G, Taub PR, Urey MA, Adler E. Effect of closed loop stimulation versus accelerometer on outcomes with cardiac resynchronization therapy: the CLASS trial. J Interv Card Electrophysiol. 2021 Sep;61(3):479-485. doi: 10.1007/s10840-020-00829-4. Epub 2020 Aug 5.
- Individual participant dataSharing planned: No
Related trials for Heart Failure
Enrolling by invitationObservational study
Multi-Scale Analysis of Phenotypes in Heart Failure (MAP-HEART)
Heart Failure
Active, not recruitingObservational study
REdo Transcatheter Aortic VALVE Implantation for the Management of Transcatheter Aortic Valve Failure
Aortic Valve Stenosis
RecruitingPhase 3
Optimal Diuretic Therapies for Acute Heart Failure With Volume Overload
Acute Heart Failure
Recruiting
Renal Denervation in Patients With Atrial Fibrillation and Hypertension
Atrial Fibrillation (Paroxysmal), Hypertension
Recruiting
Laser Acupuncture for Fatigue in Hemodialysis Patients
ESRD (End Stage Renal Disease), Dialysis
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.
Jonathan Hsu, MD principal investigator
University of California, San Diego
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing CLS Mode on Biotronik CRT-D and Accelerometer Mode on Biotronik CRT-D in people with Heart Failure and ICD, run by University of California, San Diego at 1 site in United States.
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 3 inclusion and 4 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 5 Aug 2021. 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 United States. 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. 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?
Yes. Results are posted in the registry (first posted 5 Aug 2021). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
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?
Six-minute Walk Distance (6MWD) Test (time frame: Measured on day 14 and day 21.). The study lists 4 primary outcomes in all. 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 NCT02693262, which also lists 8 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 5 Aug 2021.