Carotid-Subclavian Artery Index: New Echocardiographic Index to Detect Coarctation in Neonates and Infants

The carotid-subclavian artery index is a simply obtainable noninvasive screening parameter, showing high sensitivity and specificity for coarctation, and may be useful in unstable patients or in those with a patent ductus arteriosus in which coarctation may be overlooked.