Table 3.

Overview of echocardiographic parameters for the assessment of pulmonary artery pressure (PAP), pulmonary vascular resistance (PVR), right ventricular (RV) performance, and shunts in patients with PPHN

PAP	PVR	RV performance	Shunts
1. TR peak velocity (SPAP) 2. PI peak velocity (DPAP) 3. Transductal RtL flow peak velocity (SPAP) 4. IVS configuration/LV-sEI	5. RV systolic time intervals   PAAT   PAAT/RVET ratio   RVPET/RVET ratio 6. TRV/VTI[RVOT] ratio 7. Pulmonary artery compliance	8. TAPSE 9. FAC 10. MPI 11. RV S/D ratio 12. TDI RV free wall & IVS 13. STE	14. Transductal shunting   Direction   Peak flow velocity 15. Interatrial shunting   Direction