atrial fibrillation, traumatic brain injury
ATRIAL FIBRILLATION, HEART, DETACHMENT
In several patients, the ePatch was detached before the scheduled 5‐day recording was completed. The reasons for detachment included a need for surgery, CT scanning of the chest, and transfer to other hospitals. Furthermore, recordings from one patient with atrial fibrillation and from patients that did not meet the quality criteria were excluded from analysis. By the end of Days 1, 2, and 3, valid recordings from 22, 19, and 15 patients, respectively, were available for analysis. As 40% or more of data were missing on Days 4 and 5, we decided to restrict the analysis to the first 3 days (Figure Long‐term ePatch recordings in patients with traumatic brain injury. (a) Flow chart of long‐term measurements. (b) Heart rate variability analysis of long‐term recordings from head‐up tilt, presented as the median with interquartile range for each day. DFA1, detrended fluctuation analysis; HF, high‐frequency power (in normalized units); LF, low‐frequency power (in normalized units); LFHF, ratio of LF over HF; RMSSD, root mean square of successive differences; SDNN, standard deviation of normal‐to‐normal beat intervals.No difference was found between the control group and the group receiving early tilt training (Figure These results were unchanged after the removal of extreme outliers in an exploratory analysis. We also analyzed the effect of group allocation, age, and dose of mobilization on individual HRV variables. This was done in an exploratory linear mixed effects model including group, day, and age as independent variables. In another analysis, we investigated the number of mobilizations performed during the first 3 days and corrected for days. None of the individual HRV variables were significantly affected (Table 