Clinical characteristics, HRT, and HRV parameters (N = 75).

HRT, heart rate turbulence; HRV, heart rate variability, NYHA, New York Heart Association; ACE, angiotensin-converting enzyme; ARB, angiotensin II receptor blocker; BNP, B-type natriuretic pepide; eGFR, estimated glomerular filtration; LVEF, left ventricular ejection fraction; RV-FAC, right ventricular fractional area change; RDI, respiratory disturbance index; Lowest SpO2, lowest oxyhemoglobin saturation; Mean SpO2, mean oxyhemoglobin saturation; TS, turbulence slope; TO, turbulence onset; SDNN, standard deviation of all NN intervals; SDANN, standard deviation of the averages of the entire recording; RMSSD, the square root of the mean of the sum of the squares of differences between adjacent NN intervals; pNN50, number of pairs of adjacent NN intervals differing by more than 50 ms in the entire recording count divided by the total number of all NN intervals; TP, variance of NN intervals over the temporal segment; VLF, power in the very low frequency component; LF, power in the low-frequency component; HF, power in the high-frequency component.†Data are presented as median (inter quartile range).