Fig. 5

Importance ranking of the ten filtered features. Surgical methods, transcatheter aortic valve replacement (TAVR) and surgical aortic valve replacement (SAVR); rem_per, percentage of rapid eye movement (REM) sleep duration in total sleep; age, age of patient; nni_50, number of interval differences of successive normal heart beats greater than 50 ms; MIP, maximum inspiratory pressure; min_ven_in_mean, mean inspiratory minute ventilation; RSBI_in_mean, mean inspiratory rapid shallow breathing index (RSBI_in), RSBI_in is breath rate divided by inspiratory tidal volume; dPA, pulmonary artery diameter