Fig. 2
From: QTc prolongation is associated with severe desaturations in stroke patients with sleep apnea
The median relative changes in QTc (∆QTc) interval (within- and post-desaturation) compared to the median pre-desaturation QTc levels both in the stroke population (n = 18, subfigures A and B) and in the control population (n = 18, subfigures C and D). Changes were categorized by the length (A and C) and by the dept of the desaturation (B and D). The number of desaturations in each desaturation group varied from 79 to 571. *Statistically significant (p < 0.05) difference in ∆QTc between stroke and control population