Table 2.
LV conventional parameters in control group and hypertrophic obstructive cardiomyopathy group before and after myectomy
| Parameter | Premyectomy (n = 88) | Postmyectomy (n = 88) | Healthy controls (n = 86) | P value for premyectomy vs. postmyectomy |
|---|---|---|---|---|
| LV ejection fraction (%) | 64.2 ± 8.1† | 59.5 ± 7.6† | 61.6 ± 4.7 | < 0.001 |
| LV end-diastolic volume index (ml/m2) | 83.9 ± 24.4† | 79.7 ± 23.3† | 72.4 ± 13.0 | 0.12 |
| LV end-systolic volume index (ml/m2) | 27.8 (22.4, 35.6) | 29.2 (24.7, 36.0) | 28.2 (23.4, 32.4) | 0.18 |
| Stroke volume (ml) | 92.9 ± 27.0† | 82.9 ± 18.9† | 77.2 ± 12.0 | < 0.001 |
| Cardiac index (l/min/m2) | 3.46 ± 0.92† | 3.07 ± 0.67 | 3.17 ± 0.64 | < 0.001 |
| Maximal LV wall thickness (mm) | 28.5 ± 6.7† | 23.1 ± 6.7† | 9.6 ± 1.7 | < 0.001 |
| LV mass index (g/m2) | 97.2 ± 50.9† | 79.0 ± 41.2† | 38.5 ± 9.3 | < 0.001 |
Values are presented as mean ± standard deviations or median (interquartile range)
LV left ventricular
†Indicating P value < 0.05 for patients with hypertrophic obstructive cardiomyopathy versus healthy participants