Why the study?
Does severe obstructive sleep apnea compared to moderate obstructive sleep apnea alter heart rate variability indices in untreated male patients?
Does severe obstructive sleep apnea compared to moderate obstructive sleep apnea alter heart rate variability indices in untreated male patients?
Severe obstructive sleep apnea is associated with greater alterations in heart rate variability, particularly the LF/HF ratio, compared to moderate sleep apnea, reflecting increased sympathetic tone.
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May signal heightened sympathetic tone in severe OSAS; leaves open whether HRV monitoring aids risk stratification.
Park et al. (2008) studied this question.
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