Skip to main content
Figure 1 | Dynamic Medicine

Figure 1

From: Hypocapnia is a biological marker for orthostatic intolerance in some patients with chronic fatigue syndrome

Figure 1

End tidal CO2 (mmHg) and time (min) before and after upright leaning. Data are presented as means ± sem over time. Subjects were in the supine position at -1 and 0 and then stood up, leaning their upper backs against a wall without moving their legs. Both controls and CFS patients without orthostatic intolerance showed a small decline in eTCO2 over time. In contrast, the fall in those with orthostatic hypocapnia was substantial.

Back to article page