Table 2.
Echocardiographic characteristics
| MIpl | MIint | Shampl | Shamint | |
|---|---|---|---|---|
| n | 30 | 23 | 12 | 12 |
| M-mode | ||||
| IVSd (mm) | 0.48±0.03 | 0.55±0.04 | 1.77±0.05* | 1.68±0.05* |
| IVSs (mm) | 0.51±0.05 | 0.57±0.06 | 3.00±0.06* | 2.80±0.13* |
| LVDd (mm) | 10.8±0.16 | 10.2±0.14# | 7.36±0.13* | 7.10±0.57* |
| LVDs (mm) | 9.8±0.16 | 9.2±0.18# | 4.44±0.16* | 4.82±0.22* |
| FS (%) | 9.1±0.5 | 10.5±1.0 | 39.9±1.7* | 40.2±4.0* |
| PWd (mm) | 2.07±0.08 | 2.12±0.06 | 1.75±0.05* | 1.84±0.08* |
| PWs (mm) | 2.63±0.10 | 2.72±0.10 | 2.72±0.09 | 2.75±0.13 |
| PW thickening (%) | 29.3±1.8 | 28.3±2.6 | 56.0±6.3* | 51.3±6.4* |
| PWSV (cm s−1) | 1.94±0.13 | 1.84±0.24 | 2.92±0.23* | 2.70±0.27* |
| LAD (mm) | 7.64±0.28 | 7.13±0.22 | 4.67±0.07* | 4.69±0.13* |
| Doppler | ||||
| Peak mitral flow (m s−1) | 1.00±0.04 | 0.94±0.03 | 0.90±0.04 | 0.89±0.05 |
| Mitral flow deceleration (m s−2) | 49.5±4.2 | 37.5±2.6# | 17.7±0.8* | 20.8±2.3* |
| Heart rate (beats min−1) | 341±9 | 322±7 | 400±9* | 375±10* |
| Peak LVOT flow (m s−1) | 1.18±0.08 | 1.17±0.05 | 1.19±0.03 | 1.21±0.06 |
| CO in LVOT (ml min−1) | 102±8 | 100±6 | 154±8* | 145±10* |
Abbreviations: CO, cardiac output; FS, fractional shortening in LVD; IVSd/s, inter-ventricular septum thickness in diastole and systole, respectively; LAD, left atrial diameter; LVDd/s, left ventricular diameter in diastole and systole, respectively; LVOT, left ventricular outlet tract; PWd/s, posterior wall thickness in diastole and systole, respectively; PWSV, posterior wall shortening velocity.
*
P<0.05, Sham vs corresponding MI
#
P<0.05, MIint vs MIpl.