Summary of diagnostic criteria
| Restrictive cardiomyopathy | Constrictive pericarditis | Restrictive pericarditis | |
|---|---|---|---|
| Non-invasive | |||
| Short IVRT | + | – | + |
| Sensitivity to respiration | – | + | – |
| Short E wave deceleration time | + | – | + |
| E/A ratio > 1.0 | + | ± | + |
| Jugular venous pulse | Y descent | X descent | Y descent |
| Invasive | |||
| Ventricular ED pressures within 6 mmHg | – | + | + |
| Peak pressure < 50 mmHg | – | + | – |
| RV ED/peak pressure > 0.33 | + | – | + |
IVRT, isovolumic relaxation time; ED, end diastolic; RV, right ventricle.