Table 3. Statistically significant altered left ventricular diastolic function echocardiographic parameters in hypercholesterolemic compared to normal rabbit groups.
Baseline | 14.5 wks | 14.5+2 wks | ||||
Normal group | Hyperchol group | Normal group | Hyperchol group | Normal group | Hyperchol group | |
E wave velocity (cm/s) | 66.2±4.4 | 62.6±4.2 | 67.3±6.3 | 117.7±6.4*** | 72.9±2.5 | 100.9±8.5* |
E-wave deceleration time (ms) | 35.1 ±1.7 | 33.9±2.4 | 32.8±3.3 | 24.0±2.1* | 39.0± 3.4 | 23.2±2.0*** |
E-wave deceleration rate (m/s2) | 19.2±1.6 | 20.4±2.2 | 20.9±1.3 | 51.2±3.5*** | 19.5 + 1.8 | 46.2±5.2*** |
Lateral annulus E/Em ratio | 6.4±0.6 | 7.0±0.8 | 6.8±0.8 | 12.0 ±1.3* | 6.2±0.6 | 12.7±1.5** |
Septal annulus E/Em ratio | 6.2±0.5 | 8.1±0.8 | 7.4±0.7 | 10.7±0.8* | 8.2±0.5 | 12.1±0.7* |
Left pulmonary vein A- Ar durations (ms) | –4.8±3.3 | –2.3±3.6 | –7.1±1.5 | –26.5±6.5* | –5.1±1.5 | –27.6±4.5** |
Right pulmonary vein A- Ar durations (ms) | –2.9±3.5 | –0.2±3.5 | –7.0±2.3 | –24.0±3.0** | –3.4±1.5 | –23.4±4.9*** |
Left pulmonary vein Ar duration (ms) | 43.2±2.5 | 39.2±2.7 | 40.5±1.2 | 51.4±4.5* | 39.7±1.5 | 53.3±2.7*** |
Right pulmonary vein Ar duration (ms) | 41.2±2.1 | 35.8±1.6 | 40.4±2.2 | 50.1±2.1** | 38.1±1.4 | 51.3±3.3*** |
Comparison between the normal and hyperchol group at the given time-point. After baseline echocardiographic assessment, the hyperchol group was exposed to a cholesterol-enriched diet + vitamin D for 14.5 weeks before being switched for 2 weeks to a normal diet. E: peak velocity during early filling; Em: mitral annulus velocities during early filling in both lateral and septal annulus; A: peak velocity during active atrial filling; Ar: reversed atrial flow; AAr durations: mitral A-wave duration minus left (or right) pulmonary venous flow Ar wave duration. N = 7 for the normal group and n = 7 to 11 for the hyperchol group. * P<0.05, **P<0.01, ***P<0.001 for comparison between the normal and hyperchol group at the given time-point.