. 2021 Jun 7;23(7):958–969. doi: 10.1093/ehjci/jeab065

Table 4.

Indirect signs of diastolic dysfunction

Indirect sign of diastolic abnormality	Technical considerations	Abnormality cut-off value¹⁰
RV hypertrophy	Subcostal view, zoom preferred	>0.5 cm
RA volume	A4C view, largest end-systolic RA cavity dimension	>25 ± 7 mL/m² in men
RA volume	A4C view, largest end-systolic RA cavity dimension	>21 ± 6 mL/m² in women
Dilated non-collapsing IVC	Subcostal view	IVC > 2.1 cm, plethoric-no collapse
IAS bulges towards the LA	A4C view, alternate PSAX view at	>15 mm shift from midline
IAS bulges towards the LA	3-valve level	>15 mm shift from midline
HV diastolic flow predominance	Subcostal view, PW Doppler positioned 0.5–1.0 cm in the HV	Systolic blunting ± reversal with increased diastolic flow suggestive of increased right heart pressures