User Perceptions and Experiences of a Handheld 12-Lead Electrocardiographic Device in a Clinical Setting: Usability Evaluation

Kam Cheong Wong   ^{1, 2, 3, 4} , BEng, MBBS, MSc ;   Aravinda Thiagalingam   ^{1, 2, 5} , MBChB, PhD ;   Saurabh Kumar   ^{1, 2, 5} , MBBS, PhD ;   Simone Marschner   ¹ , BSc, MSc ;   Ritu Kunwar   ¹ , MBBS, MPH ;   Jannine Bailey   ³ , BSc, PhD ;   Cindy Kok   ⁶ , MBBS, MPH, PhD ;   Tim Usherwood   ^{1, 2, 7} , BSc, MBBS, MD ;   Clara K Chow   ^{1, 2, 5, 7, 8} , MBBS, PhD

¹ Westmead Applied Research Centre, Faculty of Medicine and Health, The University of Sydney, Westmead, Australia

² Westmead Clinical School, Faculty of Medicine and Health, The University of Sydney, Westmead, Australia

³ Bathurst Rural Clinical School, School of Medicine, Western Sydney University, Bathurst, Australia

⁴ School of Rural Health, Faculty of Medicine and Health, The University of Sydney, Orange, Australia

⁵ Department of Cardiology, Westmead Hospital, Westmead, Australia

⁶ Faculty of Medicine and Health, The University of Sydney, Sydney, Australia

⁷ The George Institute for Global Health, Sydney, Australia

⁸ Charles Perkins Centre, The University of Sydney, Sydney, Australia