UNIVERSITY OF EASTERN FINLAND IMAGE: DATA AVAILABLE FROM CLINICAL SLEEP STUDIES COULD BE UTILISED MORE EXTENSIVELY BY, FOR EXAMPLE, PAYING CLOSER ATTENTION TO HEART RATE AND HEART RATE VARIABILITY. CREDIT: UEF / RAIJA TÖRRÖNEN Longer nocturnal respiratory events in patients with obstructive sleep apnoea (OSA) cause higher immediate heart rate variability, and greater changes in...