Upright Versus Supine Exercise Testing in Fontan-palliated Patients
Completed
Conditions studied: Fontan Palliation
In brief
Fontan-palliated patients comprise an interesting group of single-ventricle patients who are dependent upon passive return of blood from the body to the lungs. Systemic venous pressures are therefore quite elevated, and one study demonstrated that venous capacitance was diminished. In addition, these patients have markedly diminished aerobic capacity (Max VO2). Although one recent study demonstrated that Fontan patients can increase their Max VO2 through diligent cardiac rehabilitation, their ultimate results were still well below average. It has previously been described that normal, healthy subjects have decreased exercise performance in a supine vs upright position. However, due to high venous pressures and the need for systemic venous return to overcome gravity in order to perfuse the lungs, one might hypothesize that Fontan patients would have increased exercise performance in a supine vs upright position. The investigators are interested in studying this hypothesis.
Key facts
- Study ID
- NCT00633815
- Run by
- University of Michigan
- People needed
- 45
- Starts
- 2008-01-01
- Expected to finish
- 2008-11-01
- Last updated by the study team
- 2017-05-10
Who can join
Age: 8 and older, up to 30. Sex: any. Healthy volunteers: accepted.
You may qualify if…
- S/p Fontan palliation > 2 years prior
- Age 8 to 30 years
You may not qualify if…
- Pacemaker dependence
- Severe hypoxemia (O2 saturation <80%)
- Recent atrial flutter or other arrhythmias
- Protein losing enteropathy (PLE)
- Severe atrioventricular valve regurgitation
- History of cardiac arrest
- Significant comorbidities (renal failure, asthma, etc).
Where it is running
- University of Michigan Health Systems, Pediatric Cardiology — Ann Arbor, Michigan, United States
Full record on ClinicalTrials.gov
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