Influence of Sex, Age and Body Mass Index on an Algorithm for Electrocardiogram-derived Respiratory Rate.

Respiratory rate (RR) is an important biomarker of cardiopulmonary status. Its role is particularly evident in conditions like obstructive sleep apnea, which significantly increase risk of heart disease. Electrocardiogram (ECG)-derived RR is an emerging alternative to traditional RR measurement, which requires cumbersome and specialized equipment.