Table 3. Velocity vector imaging-based measurements of LA/RA according to the severity of coronary stenosis.
| Variable | control group | mild CAD group | severe CAD group | P Value Overall |
| (n = 25) | (n = 20) | (n = 40) | ||
| LA Global | ||||
| maximum volume, cm3 | 62.34±19.78 | 67.11±15.46 | 65.5±22.18 | 0.71 |
| maximal LA volume index, mL/m2 | 30.41±11.73 | 33.68±9.34 | 31.41±11.21 | 0.60 |
| Peak dv/dt, ml/s | 151.77±50.05 | 148.53±41.36 | 156.12±62.89 | 0.87 |
| εs, % | 32.39±10.31 | 28.67±9.71 | 28.69±8.75 | 0.31 |
| εa,% | 17.94±9.99 | 13.48±4.45 | 14.59±6.06 | 0.08 |
| SRs,s−1 | 1.29±0.38 | 1.15±0.22 | 1.16±0.29 | 0.19 |
| SRe,s−1 | −1.08±0.30 | −0.84±0.45* | −0.93±0.34* | 0.03 |
| Sra,s−1 | −1.14±0.38 | −1.07±0.36 | −1.22±0.48 | 0.43 |
| εa/εs ratio | 0.46±0.11 | 0.51±0.15 | 0.49±0.15 | 0.43 |
| LA lateral | ||||
| εs, % | 33.94±10.36 | 31.58±9.24 | 29.68±7.67 | 0.18 |
| εa,% | 15.27±5.92 | 15.23±5.08 | 13.20±5.72 | 0.25 |
| SRs,s−1 | 1.54±0.50 | 1.30±0.37 | 1.33±0.44 | 0.14 |
| SRe,s−1 | −1.21±0.32 | −0.88±0.49** | −1.01±0.32* | 0.01 |
| SRa,s−1 | −1.07±0.41 | −1.17±0.35 | −1.45±0.68**& | 0.02 |
| εa/εs ratio | 0.45±0.09 | 0.50±0.17 | 0.44±0.16 | 0.27 |
| Septum | ||||
| εs, % | 35.06±14.00 | 28.38±10.48 | 32.10±11.84 | 0.17 |
| εa,% | 16.38±7.49 | 14.25±6.38 | 17.39±7.89 | 0.31 |
| SRs,s−1 | 1.23±0.44 | 1.22±0.37 | 1.22±0.48 | 0.99 |
| SRe,s−1 | −1.05±0.36 | −0.89±0.44 | −0.88±0.33 | 0.17 |
| SRa,s−1 | −1.14±0.38 | −1.14±0.44 | −1.33±0.59 | 0.22 |
| εa/εs ratio | 0.47±0.11 | 0.53±0.19 | 0.55±0.19 | 0.19 |
| RA Global | ||||
| maximum volume, cm3 | 61.57±20.07 | 57.04±15.66 | 52.46±16.43 | 0.12 |
| maximal RA volume index, mL/m2 | 29.97±10.26 | 28.46±8.78 | 25.10±7.87 | 0.09 |
| Peak dv/dt, ml/s | 133.34±43.84 | 116.74±43.02 | 117.65±52.02 | 0.39 |
| εs, % | 39.20±14.46 | 43.78±14.74 | 39.49±14.74 | 0.50 |
| εa, % | 15.23±7.54 | 22.16±9.35* | 19.36±9.13* | 0.04 |
| SRs,s−1 | 1.28±0.43 | 1.24±0.51 | 1.23±0.42 | 0.91 |
| SRe,s−1 | −0.94±0.39 | −0.74±0.35 | −0.86±0.35 | 0.21 |
| SRa,s−1 | −1.04±0.46 | −1.29±0.49 | −1.38±0.52** | 0.03 |
| εa/εs ratio | 0.38±0.15 | 0.52±0.16** | 0.52±0.15** | 0.00 |
| RA lateral | ||||
| εs, % | 52.85±22.85 | 59.69±19.89 | 55.66±25.55 | 0.64 |
| εa, % | 21.58±12.04 | 31.95±21.61 | 29.25±15.06 | 0.07 |
| SRs,s−1 | 1.67±0.71 | 1.71±0.67 | 1.63±0.59 | 0.89 |
| SRe,s−1 | −1.12±0.45 | −1.07±0.51 | −1.09±0.44 | 0.93 |
| SRa,s−1 | −1.28±0.72 | −1.74±0.73* | −1.76±0.79* | 0.04 |
| εa/εs ratio | 0.41±0.17 | 0.54±0.22* | 0.54±0.13** | 0.03 |
*
p<0.05 versus control group; **p<0.01 versus control group; & p<0.05 versus mild CAD group.