Prospective Observation of Exercise Parameters in Advanced Heart Failure
To observe and document ventilation parameters in the advanced heart failure population, through the course of illness, which often includes cardiac resynchronization therapy (CRT), left ventricular assist device (LVAD), and transplant. Findings from this cohort are anticipated to be of sufficient interest to the scientific community to merit publication and are likely to provide preliminary data for future hypothesis generation and subsequent prospective, randomized controlled trials.
A compact, inexpensive apparatus has recently become commercially available for performing sub-maximal exercise testing (SHAPE Medical, St Paul, MN), including gas exchange analysis and will be used in this study. This apparatus is not investigational.
|Study Design:||Observational Model: Case-Only
Time Perspective: Prospective
|Official Title:||Prospective Observation of Exercise Parameters in Advanced Heart Failure|
- Sub-maximal exercise ventilation parameters [ Time Frame: Pre and Post-LVAD placement ]Observational investigation of sub-maximal exercise ventilation parameters in patient diagnosed with, or suspected to have, advanced heart failure.
|Study Start Date:||April 2010|
|Study Completion Date:||September 2014|
|Primary Completion Date:||September 2014 (Final data collection date for primary outcome measure)|
Advanced or suspected advanced heart failure. Most are anticipated to have severely depressed ejection fraction (<30% and typically <20%), but patients with preserved ejection fraction and either hypertrophy or restrictive cardiomyopathy will also be eligible. Patients pulmonary hypertension, on any therapy (other than diuretics alone), are also felt to be at high risk of developing right heart failure and may also be included. Patients who have already undergone LVAD or cardiac transplant are also considered to have advanced heart failure and are eligible to participate, regardless of the severity of their symptoms at the time of enrollment.
Device: adjustment of LVAD or pacemaker
For patients without a device: Patients start at rest for 2 minutes and will wear a face mask and breathing parameters are recorded using the SHAPE-HF system (SHAPE Medical St. Paul, MN) that measures respiratory airflow and the constituent respiratory gases, oxygen and carbon dioxide.
For patients with a device: patients will be at rest and the adjustments of their device will be made by a study physician or device coordinator, done routinely in clinical practice. This will take up to 15 minutes and during this time; participants will wear a face mask and breathing parameters are recorded using the SHAPE-HF system (SHAPE Medical St. Paul, MN) that measures respiratory airflow and the constituent respiratory gases, oxygen and carbon dioxide.
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Please refer to this study by its ClinicalTrials.gov identifier: NCT01210573
|United States, Minnesota|
|Masonic Clinical Research Unit|
|Minneapolis, Minnesota, United States, 55455|
|Principal Investigator:||Peter M Eckman, MD||University of Minnesota - Clinical and Translational Science Institute|