OP-97 Heart Rate Variability Before and After Transarterial Aortic Valve Implantation
Aims
The aim of this study is to evaluate heart rate variability (HRV) and echocardiographic parameters before and after Transarterial Aortic Valve Implantation (TAVI) in patients with severe aortic stenosis and at high surgical risk.
Methods
Eighty-four TAVI patients with severe aortic valve disease were studied. Echocardiographic parameters and heart rate variability were obtained Holter electrocardiogram recordings made over 24 hours were compared before and after transarterial aortic valve implantation.
Methods
Eighty-four TAVI patients with severe aortic valve disease were studied. Echocardiographic parameters and heart rate variability were obtained Holter electrocardiogram recordings made over 24 hours were compared before and after transarterial aortic valve implantation.
Results
There were significant correlations between the time-domain measures of heart rate variability and left ventricular ejection fraction, peak aortic and mean aortic pressures, and degree of aortic valve regurgitation before and after transarterial aortic valve implantation. The reassessment of heart rate variability two weeks after transarterial aortic valve implantation showed significant decreases in standard deviation of normal sinus to normal sinus (SDNN) (108±40 ms vs. 96±46 ms; p<0.019), mean of 5 min standard deviation of NN interval durations (SDNNI) (86±39 ms vs. 72 ±30 ms; p<0.026), standard deviation of the averages of normal sinus to normal sinus (SDANN) (95±41 ms vs. 68±33 ms; p<0.001), and root-mean square differences of successive R-R intervals (RMSSD) (41±29 ms vs. 27.9±19 ms; p< 0.002).
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