Table 1 Comparison between echocardiographic parameters used by neonatologist and cardiologist in PDA assessment. E mitral E wave, A mitral A wave, LA/Ao Left Atrium Aortic root ratio, IVRT Isovolumic relaxation time, LVO Left ventricular output, LPA Left pulmonary artery, SVC superior vena cava
From: Survey of PDA management in very low birth weight infants across Italy
Echocardiographic parameter | Echo assessment by neonatologist | Echo assessment by cardiologist | p |
|---|---|---|---|
PDA diameter | 100% | 100% | Â |
Ductal Peak systolic velocity | 54% | 80% | Â |
Ductal End diastolic velocity | 14% | 30% | Â |
Ductal Peak systolic/End diastolic velocity | 13% | 10% | Â |
Flow pattern across PDA | 100% | 90% | Â |
LA/Ao | 95% | 100% | Â |
E/A | 19% | 10% | Â |
IVRT | 1% | 0% | Â |
LVO | 40% | 20% | Â |
LPA end diastolic velocity | 44% | 30% | Â |
Descending aortic flow | 79% | 80% | Â |
LVO/SVC flow ratio | 22% | 20% | Â |
Flow pattern in peripheral vessels | 89% | 40% | * |