From: Diastolic dysfunction and diastolic heart failure: diagnostic, prognostic and therapeutic aspects
Parameter | Normal pattern | Pattern of abnormal relaxation (Grade I) | Pseudonormal pattern (Grade II) | Restrictive patterns (Grades III-IV) |
---|---|---|---|---|
E/A | >1 | <1 | 1 – 2 | ≥2 |
DT (ms) | 160 – 210 | >220 | 150 – 200 | <150 |
IVRT (ms) | 70 – 90 | >95 | 60 – 95 | <60 |
S/D | 1.3 – 1.5 | 1.6 – 2.0 | <1 | 0.40 – 0.60 |
AR (m/sec) | 0.22 – 0.32 | 0.21 – 0.28 | ≥0.35 | ≥0.25 |
Em (cm/sec) | >8 | <8 | <8 | <5 |
Vp (cm/sec) | >55 | <45 | <45 | <35 |
E/Em | < 8 | Â | Â | > 16 |
E/Vp | Â | Â | Â | > 2.5 |