The correlation of coronary microvascular function and body composition with cardiopulmonary exercise capacity will be assessed in patients with heart failure with preserved ejection fraction.
We will select the patients with chest pain or ischemic symptoms with non-obstructive coronary artery disease (\<50% stenosis) in coronary angiography and preserved ejection fraction (≥50%) in echocardiography. All patients will undergo body composition analysis and adenosine stress echocardiography with the evaluation of coronary artery blood flow by Doppler echocardiography and maximal oxygen consumption (VO2 max) by cardiopulmonary exercise test (CPET). Left ventricular end-diastolic pressure will be assessed during coronary angiography. Coronary flow reserve (CFR) is defined as the ratio of peak to baseline mean diastolic velocity of coronary blood flow. The correlation of CFR and body composition with cardiopulmonary exercise capacity will be assessed.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
100
The color Doppler flow of distal left anterior descending artery will be examined from the modified apical four-chamber view in the anterior interventricular groove. In regard to body composition analysis, Using InBody S10, impedance is measured in 6 frequency bands (1 kilohertz (kHz), 5 kHz, 50 kHz, 250 kHz, 500 kHz, 1000 kHz) for each of 5 parts (right plate, left arm, torso, right leg, left leg). Reactance is measured in 3 frequency bands (5 kHz, 50 kHz, 250 kHz for each of 5 parts (right arm, left arm, torso, right leg, left leg). By treadmill exercise test with modified Bruce protocol or bicycle ergometer for patients with orthopedic problems, maximal oxygen consumption (VO2 max) will be measured using the exhalation gas analysis.
Korea University Anam Hospital
Seoul, South Korea
RECRUITINGCorrelation of coronary blood flow with cardiopulmonary exercise capacity
Coronary blood flow is assessed by coronary flow reserve (CFR), which is defined as peak to baseline mean diastolic velocity of coronary flow. In regard to cardiopulmonary exercise capacity, maximal oxygen consumption (VO2max) will be assessed.
Time frame: up to day 14
Correlation of body composition with cardiopulmonary exercise capacity
In body composition analysis, skeletal muscle mass and body fat mass will be assessed. In regard to cardiopulmonary exercise capacity, maximal oxygen consumption (VO2max) will be assessed.
Time frame: up to day 14
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