This prospective cross-sectional diagnostic accuracy study enrolled patients undergoing coronary angiography and left heart catheterization at Burapha University Hospital, Thailand. The diameters of the common femoral vein and common femoral artery were measured using ultrasonography, and the common FVD/FAD ratio was calculated. LVEDP, measured during left heart catheterization, served as the reference standard. An elevated LVEDP (\>16 mmHg) was defined as volume overload. Diagnostic performance was evaluated using receiver operating characteristic (ROC) curve analysis.
adult patients (aged ≥18 years) who were scheduled to undergo coronary angiography with left heart catheterization
(1) contraindications to cardiac catheterization; (2) inability to obtain accurate ultrasonographic measurements of the common femoral vein or common femoral artery diameters; and (3) inability to advance a guidewire across the aortic valve into the left ventricle for measurement of LVEDP.
adult patients (aged ≥18 years) who were scheduled to undergo coronary angiography with left heart catheterization
Other
Cross-sectional
Ultrasound Measurement of Common Femoral Vein-to-Artery Diameter Ratio
Diagnostic testUltrasound measurement of the common femoral vein and common femoral artery diameters performed in the supine position. The common femoral vein-to-artery diameter ratio is calculated from the measured vessel diameters and evaluated as a diagnostic index for detecting elevated left ventricular end-diastolic pressure. The ultrasound examination is non-invasive and does not involve administration of any therapeutic intervention.
Left ventricular end diastolic pressure
Left ventricular end diastolic pressure measured by left heart catheterization
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