Table 1. Echocardiographic parameters of the control and CIH rats.
| Parameter | Control | CIH | P |
|---|---|---|---|
| IVSd (mm) | 1.495±0.422 | 1.425±0.386 | 0.1037 |
| IVSs (mm) | 2.137±0.562 | 2.151±0.498 | 0.7951 |
| LVIDd (mm) | 6.261±1.875 | 6.582±2.015 | 0.0876 |
| LVIDs (mm) | 3.060±0.923 | 4.094±1.131 | 0.0002 |
| LVPWd (mm) | 1.565±0.181 | 1.686±0.365 | 0.0319 |
| LVPWs (mm) | 2.559±0.423 | 2.759±0.598 | 0.0301 |
| EDV (cm3) | 0.562±0.109 | 0.652±0.102 | 0.0029 |
| ESV (cm3) | 0.070±0.024 | 0.171±0.054 | < 0.0001 |
| EF (%) | 87.290±9.436 | 74.247±10.345 | 0.0022 |
| SV (cm3) | 0.492±0.112 | 0.482±0.010 | 0.4190 |
| FS (%) | 51.170±12.425 | 38.127±11.564 | 0.0002 |
CIH: chronic intermittent hypoxia; IVSd: the intervernicular septum in diastole; IVSs: the intervernicular septum in systole; LVIDd: left ventricular internal diameter in diastole; LVIDs: left ventricular internal diameter in systole; LVPWd: the left ventricle posterior wall in diastole; LVPWs: the left ventricle posterior wall in systole; EDV: the volume of blood within a ventricle immediately before a contraction is known as the end-diastolic volume; ESV: the volume of blood left in a ventricle at the end of contraction is end-systolic volume; EF: ejection fraction is the fraction of blood in the left and center ventricles pumped out with each heartbeat; SV = EDV-ESV; FS: fractional shortening.