-
A Study to Evaluate the Effect of Motion and Poor Circulation on Various Pulse Oximeter Performances During Heart Failure Stress Tests
Rochester, MN
The purpose of this study is to compare pulse oximetry performances from different manufacturers and with different anatomical sensor locations during stress tests in heart failure patients, evaluating effectiveness against motion and poor circulation.
-
A Study to Determine if Body Position (Aerobar or Upright) Influences Quadriceps Oxygenation during Exercise in Cyclists
Rochester, MN
The purpose of this study is to verify this finding in a cohort of experienced cyclist. If the aerobar position indeed decreases quadriceps oxygen saturation, there can be implications for musculoskeletal fatigue and/or athletic performance.
-
A Study to Evaluate Whether or Not High-intensity Exercise Testing Can Detect Exercise-related Arrhythmias in Pediatric and Young Adults
Rochester, MN
The purpose of this study is to determine the feasibility, safety and diagnostic yield of a modified treadmill exercise stress testing with a running protocol in the detection of exercise-induced arrhythmias.
-
A Study to Compare Post-exercise Treadmill versus Supine Bicycle Exercise Left Ventricular Outflow Tract Gradients Assessed by Echocardiography in Hypertrophic Cardiomyopathy
Rochester, MN
Exercise testing is routinely utilized in the evaluation of patient’s with hypertrophic cardiomyopathy to assess exercise capacity and also to evaluate the presence and severity of obstruction with an echocardiogram. Identifying significant obstruction is important in order to determine who could gain benefit from more invasive therapies like surgery.
There are several different exercise protocols available but it is not known which is the best method to assess the presence and severity of obstruction in hypertrophic cardiomyopathy. The purpose of this study is to determine which exercise protocol (supine bike or exercise treadmill) is better in these regards.
-
A Study to Analyze if Exercise Echocardiography Can Identify Ventricular and Vascular Function Abnormalities That are Undetectable at Rest for Patients With Coarctation of Aorta (COA)
Rochester, MN
This study is designed to determine if exercise echocardiography will identify ventricular and vascular function abnormalities in patients with COA that are not apparent at rest, and that exercise-induced ventricular and vascular dysfunction will predict clinical outcomes.
-
A Study to See if MPI SPECT Phase Analysis Can Detect Varying Levels of Changes in Heart Rhythm Patterns
Rochester, MN
The purpose of this study is to determine if MPI SPECT phase analysis can detect varying degrees of abnormal heart rhythm between patients with normal coronary artery circulation, ischemia (poor blood circulation), and infarct (area of dead tissue) from loss of circulation.
-
A Study to Evaluate Cardiopulmonary Exercise Testing in Liver Transplant Candidates
Scottsdale/Phoenix, AZ
The purpose of this study is to determine agreement between cardiopulmonary exercise testing and cardiac stress testing (SOC) for the identification of subclinical coronary artery disease in liver transplant candidates, to determine agreement between cardiopulmonary exercise testing and dobutamine stress echocardiogram (SOC) for the identification of cirrhotic cardiomyopathy in liver transplant candidates, and to determine agreement between peak oxygen consumption from cardiopulmonary exercise testing and the liver frailty index or the six-minute walk test (SOC), for the identification of frailty in liver transplant candidates.