Subjective quantification of RV pressures | Absolute criteria | Supportive criteria | ||
---|---|---|---|---|
Septal geometry in systole | Shunt directiona | RV functionb | RV/RA sizec | |
Normal (< 1/3 systemic) | Septum round Eccentricity indexd ≤ 1.0 | L to R | Normal | Normal |
Mildly elevated (1/3–2/3 systemic) | Septal geometry mildly distorted, Eccentricity index 1.01–1.20 | L to R | Normal | Mildly dilated |
Moderately elevated (> 2/3 systemic) | Septum moderately distorted but not flat, Eccentricity index 1.21–1.4 | L to R | Mildly depressed | Mod. dilated |
Severely elevated (≥ systemic) | Septum flat or bowing into left ventricle, Eccentricity index > 1.4 | R to L | ≥ Mod. depressed | Severely dilated |