. 2017 Jan 9;18(3):237–253. doi: 10.1093/ehjci/jew229

Table 2.

Quantitative standard and advanced echocardiographic parameters (with respective cut-off points) recommended in patients with suspected or ascertained AC

Parameter	Abnormal if:
PLAX RVOT (mm)^a	≥29
PLAX RVOT index (mm/m²)^a	≥16
PSAX RVOT (mm)^a	≥32
PSAX RVOT index (mm²)^a	≥18
RV basal diameter (mm)	>41
RV fractional area change (%)^a	≤40
TAPSE (mm)	<17
RV longitudinal strain of lateral RV free wall (%)	Worse than −23
RV mechanical dispersion (SD of time-to-peak strain) (ms)	>25–30^b
3D RV-EF (%)	≤40
LV GLS (%)	Worse than −18

^aMinor criteria from the TFC 2010.

^bThree-segment model and six-segment model.

EF, ejection fraction; GLS, global longitudinal strain; LV, left ventricular; PLAX RVOT, parasternal long-axis right ventricular outflow tract; PSAX RVOT, parasternal short-axis right ventricular outflow tract; RV, right ventricle; TAPSE, tricuspid annular plane systolic excursion.