Figure 7
From: Passive longitudinal weight and cardiopulmonary monitoring in the home bed
Cardiopulmonary coupling and hemodynamic consequences of arrhythmias. (a) Respiratory signal (blue) and single-peak BCG (pink) with peak and valley annotations (green and blue respectively) showing BCG magnitude variation with respiratory phase. (b) Bar plot comparing BCG magnitude of beats that began during inspiration (blue) compared to expiration (gray). (c) Single-peak BCG (pink) compared to ECG (black) with peak annotation (purple arrows) surrounding a ventricular couplet. Pink annotations highlight the BCG magnitude increase after the ventricular couplet. (d) Single-peak BCG (pink) compared to ECG (black) with peak annotation (purple arrows) during a region of non-sustained ventricular tachycardia (NSVT). Pink annotations highlight the BCG magnitude increase surrounding the NSVT. (e) Bar plot quantifying the relative magnitude of BCG beats occurring before ventricular couplets, triplets or NSVTs (gray) compared to the BCG beat immediately following the ectopy (blue). Data are shown as mean ± standard deviation. ****P < 0.0001, Mann–Whitney test.
