“…Widespread diffusion of such technology to patients at elevated risk of SCA will be necessary before any potential benefits can be tested. (Bolle, Scholl, & Gilbert, 2009, Choa et al, 2008, Merchant et al, 2010, You, Park, Chung & Park, 2008. One limitation is that as such apps are unregulated, many do not convey current basic life support algorithms and may have poor usability (Kalz et al, 2014).…”