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

Figure 4

HRV during rhythmic breathing. (a) The total Fourier spectrum, (b) the histogram, (c) the tachogram, and (d) the Poincaré plot. In (a), the sympathovagal balance is included (SVB = 3.27 versus 1.83 ± 0.5 in controls); the total power of LF was 2.8 versus 4.3 ± 2.4 in controls, and the total power of HF was 0.9 versus 2.4 ± 1.2 in controls. Although some respiratory driving is present, the magnitude of the driving is abnormally decreased.

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