NPPB and cardiac arrhythmia: When screened populations were enriched using clinical risk factors or elevated NT-proBNP concentrations,31 incidence rates increased (2.7–4.4%,29,31,33) Published reports suggest that continuous PPG monitoring is associated with higher (2.5 -5.3%,30,32,34) arrhythmia detection rates than intermittent monitoring (0.9–3.8%,35–38) confirmed in this study.