The impact of cardiac rhythm on the mitral valve area and gradient in patients with mitral stenosis
https://dx.doi.org/10.14744%2FAnatolJCardiol.2017.7614
Conclusion:
Cardiac rhythm has a significant impact on echocardiographic evaluation of MVA, transmitral gradient, and Cn in patients with MS.
Comparison of echocardiographic characteristics in atrial fibrillation and sinus rhythm
| Parameters | AF phase (n=19) | SR phase (n=19) | P |
|---|---|---|---|
| LV ejection fraction (%) | 60.47±6.84 | 61.44±6.76 | 0.83 |
| LV end-systolic diameter, mm | 30.15±4.29 | 30.24±3.40 | 0.91 |
| LV end-diastolic diameter, mm | 46.57±3.50 | 47.57±3.67 | 0.85 |
| LA diameter, mm | 48.94±3.74 | 48.94±3.27 | 0.98 |
| LA volume, mL | 92.85±28.97 | 88.90±27.74 | <0.001 |
| E-wave velocity, m/sec | 2.14±0.25 | 2.03±0.30 | 0.01 |
| sPAP, mm Hg | 46.63±13.32 | 41.57±12.67 | 0.004 |
| Maximal transmitral gradient, mm Hg | 18.57±4.54 | 16.94±5.11 | 0.013 |
| Mean transmitral gradient, mm Hg | 8.89±3.52 | 6.49±2.51 | 0.001 |
| Corrected maximal transmitral gradient, mm Hg.minute/beat | 0.16±0.031 | 0.22±0.062 | <0.001 |
| Corrected mean transmitral gradient, mm Hg.minute/beat | 0.076±0.025 | 0.086±0.030 | 0.198 |
| PHT-derivated MVA, cm2 | 1.59±0.26 | 1.66±0.30 | 0.011 |
| Planimetric MVA, cm2 | 1.54±0.27 | 1.62±0.29 | 0.003 |
| Cn value, mL/mm Hg | 6.26±0.64 | 5.37±0.77 | <0.001 |
| Heart rate, beat/minute | 114±18 | 75±10 | <0.001 |