Arrhythmias & electrophysiology
Association between nighttime heart rate and cardiovascular mortality in patients with implantable cardioverter-defibrillator: A cohort study
Authors' conclusion
Continuous monitoring of NTHR may identify patients at high risk of cardiovascular mortality in a timely manner, with the potential for "preemptive" action.
Study context
- Population
- Patients with implantable cardioverter-defibrillator (ICD) or CRT defibrillator in sinus rhythm, enrolled 2010–2015
- Participants
- 534 patients
- Exposure
- Per 1 beat/min increase in nighttime heart rate
- Outcome
- CV mortality
- Follow-up
- 60.4 ± 21.8 months
Main finding
As reported in the abstract
CV mortality per 1 beat/min increase in NTHR
Increase in risk of CV mortality per 1 beat/min, total population
7.8%
Increase in risk of CV mortality per 1 beat/min, patients with HF
10.1%
Increase in risk of CV mortality per 1 beat/min, patients without HF
5.7%
Observational data: associations, not effects.
Further findings
Baseline nighttime heart rate (NTHR) · 30 to 60 days after implantation
- Mean baseline NTHR
- 59.6 ± 8.0 beats/min
Original publication
Association between nighttime heart rate and cardiovascular mortality in patients with implantable cardioverter-defibrillator: A cohort study. Heart Rhythm. Published 9 September 2023. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →