Key result
Under-mattress ballistocardiography tracks heartbeat cycle lengths with moderate-to-strong correlation to ECG in AF.
Why the study?
Does a ballistocardiographic sensor accurately detect heartbeat cycle length compared to ECG in patients with atrial fibrillation and sinus rhythm?
Cohort (n=22)
No
Does a ballistocardiographic sensor accurately detect heartbeat cycle length compared to ECG in patients with atrial fibrillation and sinus rhythm?
Answers are grounded in this paper and cite their sources.
A ballistocardiographic foil placed under a mattress can unobtrusively and reliably monitor heartbeat cycle lengths with strong correlation to ECG during both normal and arrhythmic states.
BACKGROUND: Heart rate monitoring is especially interesting in patients with atrial fibrillation (AF) and is routinely performed by ECG. A ballistocardiography (BCG) foil is an unobtrusive sensor for mechanical vibrations. We tested the correlation of heartbeat cycle length detection by a novel algorithm for a BCG foil to an ECG in AF and sinus rhythm (SR). METHODS: In 22 patients we obtained BCG and synchronized ECG recordings before and after cardioversion and examined the correlation between heartbeat characteristics. RESULTS: We analyzed a total of 4317 heartbeats during AF and 2445 during SR with a correlation between ECG and BCG during AF of r = 0.70 (95% CI 0.68-0.71, P < 0.0001) and r = 0.75 (95% CI 0.73-0.77, P < 0.0001) during SR. By adding a quality index, artifacts could be reduced and the correlation increased for AF to 0.76 (95% CI 0.74-0.77, P < 0.0001, n = 3468) and for SR to 0.85 (95% CI 0.83-0.86, P < 0.0001, n = 2176). CONCLUSION: Heartbeat cycle length measurement by our novel algorithm for BCG foil is feasible during SR and AF, offering new possibilities of unobtrusive heart rate monitoring. This trial is registered with IRB registration number EK205/11. This trial is registered with clinical trials registration number NCT01779674.
No takes yet. Share an insight, caveat, or question.
Zink et al. (2015) conducted a cohort in Atrial Fibrillation (n=22). Ballistocardiography (BCG) sensor foil vs. Electrocardiogram (ECG) was evaluated on Correlation of heartbeat cycle length detection between BCG and ECG in atrial fibrillation (r = 0.70, 95% CI 0.68-0.71, p=<0.0001). A ballistocardiographic sensor accurately detected heartbeat cycle lengths with significant correlation to ECG during atrial fibrillation and sinus rhythm.
Synapse has enriched 10 related papers. Consider them for comparative context: