Abstract:
BACKGROUND:It is known that coronary heart surgery leads to varying degrees of cardiac autonomic derangement, clinically detectable as depression of heart rate variability (HRV) parameters. Few studies report that also surgical replacement of the aortic valve (SAVR) may lead to HRV abnormalities, while very little is known about the autonomic effects obtained after less invasive aortic valve replacement techniques. The study aimed to evaluate HRV after SAVR and to compare it with two less invasive techniques, transapical (TaAVI) and tranfemoral (TfAVI) aortic valve implant. METHODS:Time-domain heart rate variability (HRV) parameters have been studied by 24-h Holter ECG in 129 patients after SAVR, in 63 patients after TfAVI and in 19 patients after TaAVI. RESULTS:All HRV parameters were significantly depressed in SAVR, while they were almost completely preserved in TfAVI patients; TaAVI cases showed a somehow intermediate behaviour [(SDNN respectively: 71.0±34.9 vs 95.9±29.5 (p<0.001) vs 84.4±32.6ms (p=ns)]. Mean heart rate during the 24-h Holter was 8% higher in SAVR patients than in both TfAVI and TaAVI patients. The reported results were not correlated with echocardiographic ejection fraction, or presence of abnormal glucose metabolism, or degree of anaemia or treatment with beta-blockers. CONCLUSIONS:SAVR leads to profound depression of some cardiac autonomic parameters, while less invasive procedures allow better preservation of HRV. In particular TfAVI does not induce any significant deterioration of HRV parameters and seems to be the strategy of valve implant with less impact on the cardiovascular autonomic system.
journal_name
Int J Cardioljournal_title
International journal of cardiologyauthors
Compostella L,Russo N,Compostella C,Setzu T,D'Onofrio A,Isabella G,Tarantini G,Iliceto S,Gerosa G,Bellotto Fdoi
10.1016/j.ijcard.2015.06.004subject
Has Abstractpub_date
2015-10-15 00:00:00pages
11-5eissn
0167-5273issn
1874-1754pii
S0167-5273(15)01305-4journal_volume
197pub_type
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