Pulse wave amplitude drops help find patients with OSA at risk for cardiovascular events

Having a low pulse wave amplitude drop index was linked to a heightened risk for cardiovascular events in patients with obstructive sleep apnea, according to results published in American Journal of Respiratory and Critical Care Medicine.
Pulse wave amplitude drops (PWADs) indicate sympathetic activations and vascular reactivity, according to researchers.
“These results suggest that adding the PWAD index to [apnea-hypopnea index] provides a better indication of increased cardiovascular risk and may reflect the specific impact of OSA on autonomic and/or vascular reactivity,” Geoffroy

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