Asymptomatic Severe Vagal and Sympathetic Cardiac Denervation in Holmes-Adie’s Syndrome

Figure 2

HRV in the supine position. (a) The total Fourier spectrum, (b) the histogram, (c) the tachogram, and (d) the Poincaré plot. The sympathovagal balance (SVB = LF/HF) was 1.31 versus 0.85 ± 0.3 in controls. The total power of LF was 6.4 versus 8.1 ± 2.5 in controls, and the total power of HF 4.9 versus 10.1 ± 3.6 in controls. The tachogram, the histogram, and the Poincaré plot show a loss of variability across all frequencies.

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