Table III.
Baseline echocardiographic parameters in responders and non-responders to CRT
| Parameter | Non-responders (n = 23) | Responders (n = 34) | Value of p |
|---|---|---|---|
| RA minor dimension [mm] | 38.35 ±7.08 | 37.21 ±7.66 | 0.489 |
| RA major dimension [mm] | 52.65 ±8.69 | 47.85 ±11.33 | 0.028 |
| RA area [cm2] | 19.01 ±5.70 | 16.47 ±6.57 | 0.064 |
| RV wall thickness [mm] | 5.78 ±1.24 | 5.26 ±1.14 | 0.309 |
| RV diastole [mm] | 26.3 ±8.08 | 24.71 ±6.25 | 0.660 |
| RV systole [mm] | 21.74 ±7.96 | 19.85 ±6.56 | 0.499 |
| RV basal minor dimension [mm] | 28.83 ±4.67 | 28.68 ±4.40 | 0.987 |
| RV mid cavity dimension [mm] | 23.83 ±4.74 | 24.47 ±4.97 | 0.858 |
| RV 4CH systolic area [cm2] | 11.07 ±4.61 | 10.86 ±4.51 | 0.776 |
| RV 4CH diastolic area [cm2] | 15.76 ±5.60 | 15.69 ±5.00 | 0.884 |
| RV fractional area change (%) | 30.91 ±8.42 | 31.65 ±11.54 | 0.948 |
| TAPSE [mm] | 13.04 ±2.93 | 14.56 ±2.57 | 0.030 |
| S’ [cm/s] | 8.17 ±3.27 | 9.29 ±3.55 | 0.269 |
| E’ [cm/s]* | 7.52 ±3.33 | 8.24 ±2.94 | 0.323 |
| A’ [cm/s]* | 8.43 ±4.26 | 10.53 ±4.91 | 0.126 |
| TR | 2.30 ±0.88 | 1.82 ±0.97 | 0.033 |
| TR%RA (%) | 23.52 ±11.43 | 18.03 ±11.74 | 0.051 |
| RVSP [mm Hg] | 33.95 ±22.56 | 29.13 ±18.96 | 0.087 |
RA – right atrium, RV – right ventricle, TAPSE – tricuspid annular plane systolic excursion, S’ – peak systolic annular velocity, E’ – peak early diastolic annular velocity, A’ – peak late diastolic annular velocity, TR – tricuspid regurgitation, TR%RA – percentage of right atrium area covered by regurgitation jet, RVSP – right ventricle systolic pressure.
*
Only in patients with sinus rhythm.