Feasibility of Using a Single Heart Rate–Based Measure for Real-time Feedback in a Voluntary Deep Breathing App for Children: Data Collection and Algorithm Development

Christian L Petersen   ¹ , PhD ;   Matthias Görges   ^{1, 2} , PhD ;   Evgenia Todorova   ^{3, 4} , MD ;   Nicholas C West   ¹ , MSc ;   Theresa Newlove   ^{3, 4} , PhD, Rpsych ;   J Mark Ansermino   ^{1, 2} , MBBCh, MMed (Anaesth), MSc (Info), FRCPC

¹ Department of Anesthesiology, Pharmacology & Therapeutics, The University of British Columbia, Vancouver, BC, Canada

² Research Institute, BC Children’s Hospital, Vancouver, BC, Canada

³ Department of Psychology, The University of British Columbia, Vancouver, BC, Canada

⁴ Department of Psychology, BC Children’s Hospital, Vancouver, BC, Canada