From: Clinical genetic testing in four highly suspected pediatric restrictive cardiomyopathy cases
 | RCM | CP |
---|---|---|
Pericardial calcification (TTE, Chest X-ray, CT, MRI) | Rare |  +  |
Thickened pericardium (TTE, Chest X-ray, CT, MRI) | 0 |  +  |
Thickened endocardium (TTE, CT, MRI) | Sometimes | 0 |
Abrupt septal movement (‘notch’ or ‘bounce’) in early diastole (TTE) | 0 |  +  |
Septal movement toward left ventricle in inspiration (TTE) | 0 |  +  |
Left and right atrial enlargement (TTE, CT, MRI) |  +  |  +  |
the tissue velocity of mitral annulus (TTE) |  < 8 cm/s |  > 8 cm/s |
systolic area index (Cardiac catheterization) | 0.92 ± 0.19 | 1.4 ± 0.2 |
End-diastolic pressure difference between left and right ventricles (Cardiac catheterization) |  > 5 mmHg |  < 5 mmHg |
the ratio of right ventricular end-diastolic pressure to systolic pressure (Cardiac catheterization) | 0.35 ± 0.14 | 0.50 ± 0.13 |
Radionuclide retention in atrium, Delayed radionuclide imaging of right ventricle (Radionuclide examination) |  +  | 0 |
myocardial interstitial fibrosis (Endomyocardial biopsy) |  +  | Rare |
B-type natriuretic peptide | Can be higher than 800 pg/ml | Most between 100 ~ 200 pg/ml |