Table 3.
Classification of study population based on SVRc and GWI (see also Figure 2).
| HCM (n = 30) | ATTR (n = 30) | Total (n = 60) | |
|---|---|---|---|
| Class A (Best class) | 4 (13%) | - | 4 (7%) |
| Class B (Impaired GWI) | 5 (17%) | - | 5 (8%) |
| Class C (Poorest class) | 13 (43%) | 28 (93%) | 41 (68%) |
| Class D (Higher SVRc) | 8 (27%) | 2 (7%) | 10 (17%) |
| Differential characteristics in subclass patients with HCM | |||
| Class C (n = 13) | Other Classes (n = 17) | p-Value | |
| Stroke volume index, mL/m2.7 | 26.7 ± 8.7 | 37.5 ± 10.8 | 0.005 |
| LV end-diastolic volume index, mL/m2.7 | 43.7 ± 12.8 | 57.5 ± 16.1 | 0.015 |
| GLS, % | 13.0 ± 3.4 | 16.0 ± 4.3 | 0.043 |
| IVS thickness, mm | 18.2 ± 3.4 | 15.6 ± 2.8 | 0.029 |
| LV ejection fraction, % | 60.6 ± 6.1 | 64.8 ± 5.1 | 0.055 |
| Age, years | 58.7 ± 13.0 | 48.9 ± 16.2 | 0.076 |
| Left atrial volume index, mL/m2.7 | 47.1 ± 20.8 | 41.1 ± 11.6 | 0.368 |
Measurements are expressed as mean values ± SD. HCM, hypertrophic cardiomyopathy; GLS, global longitudinal strain; IVS, interventricular septum; LV, left ventricle/ventricular.