People with OSA showed higher BPV and longer QRS compared with control participants. The BPV showed only moderate or non significant correlations with other BP and ECG-derived metrics including HR, HRV, and MBP. Separating by sex showed that females with OSA had significantly higher BPV, whereas the QRS duration was significantly higher in males.The BPV findings provide further evidence of autonomic dysregulation in OSA,broadly replicating earlier findings. The moment-to-moment variability in BP reflects a distinct physiologic process not captured by classic BP measures, and BPV is a potential marker of autonomic control obtainable non-invasively.
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