Table 3. The left ventricular systolic and diastolic function parameters in patients with TTS and normal controls at different times (values are mean ± SD).
| Parameters | Normal controls (n=20) | TTS (n=16) | ||
|---|---|---|---|---|
| On admission | After 4 weeks | After 8 weeks | ||
| LVEDV (mL) | 76.03±5.38 | 84.23±10.67 | 78.92±7.04 | 75.79±6.86 |
| LVESV (mL) | 26.47±3.52 | 55.94±8.51 | 33.04±5.68 | 28.05±4.33 |
| LVSV (mL) | 49.56±3.71 | 28.31±8.06 | 45.86±5.91 | 47.81±3.57 |
| LVEF (%) | 65.18±2.49 | 33.59±4.12 | 58.09±3.26 | 63.02±3.92 |
| E (m/s) | 0.83±0.16 | 0.58±0.09 | 0.51±0.11 | 0.55±0.11 |
| A (m/s) | 0.67±0.11 | 0.81±0.09 | 0.79±0.10 | 0.78±0.09 |
| E/A ratio | 1.23±0.09 | 0.71±0.06 | 0.64±0.05 | 0.70±0.08 |
| E’ (cm/s) | 8.57±2.13 | 4.93±1.34 | 5.05±1.18 | 5.67±1.41 |
| A’ (cm/s) | 6.11±2.45 | 8.16±1.70 | 8.03±1.49 | 7.95±1.33 |
| E’/A’ ratio | 1.40±0.12 | 0.61±0.07 | 0.63±0.06 | 0.71±0.08 |
| E/E’ ratio | 9.68±1.47 | 11.70±2.01 | 10.1±2.15 | 9.70±1.96 |
LVEDV, LVESV, LVSV, and LVEF were measured by real-time 3-dimensional echocardiography. TTS, Takotsubo syndrome; SD, standard deviation; LVEDV, left ventricular end-diastolic volume; LVESV, left ventricular end-systolic volume; LVSV, left ventricular stroke volume; LVEF, left ventricular ejection fraction; E, mitral inflow peak E-wave velocity; A, mitral inflow peak A-wave velocity; E’, mitral annular peak E’-wave velocity; A’, mitral annular peak A’-wave velocity.