Abstract 14843: Permanent Pacemaker Implant Improves Patient’s Sleep Habit
Background: Permanent pacemaker is indicated for patients with symptomatic bradycardia. It has been known that patients often report improved sleep habit after pacemaker implant. However, to date, there has been no study that investigated a possible effect of pacemaker implant on sleep habit.
Methods: Total 97 patients who agreed to the study were included (82 pacemakers and 15 ICDs). Patients with biventricular pacemaker were excluded. Patients filled the questionnaires about sleep habit upon their routine device interrogation. Data were analyzed using paired T test and chi square test.
Results: Indication of permanent pacemaker was sick sinus syndrome (71%), 2nd degree AV block (17%), 3rd degree AV block (10%), and syncope (2%). Indication of ICD was primary sudden cardiac death prevention without history of known symptomatic bradycardia (100%). The ICD group was used as the control group. Ventricular pacing was noted 47.6% of the time in the pacemaker group and 17.27 % in the ICD group (p=0.01). Generally improved sleep habit was reported in 50% patients of the pacemaker group and 15% patients of the ICD group (P=0.025). The patients with improved sleep habit in the pacemaker group reported longer sleep hours when compared to their pre-pacemaker baseline (7.13 vs. 6.48 hours, P=0.0001). In multiple regressions analysis with covariates: age, duration of device, device type, ventricular pacing, gender and sleep apnea, the pacemaker group demonstrated significantly improved sleep quality (P=0.01).
Conclusions: Improved sleep hours and quality are more commonly seen in the patients who underwent permanent pacemaker implant for symptomatic bradycardia than the patients with ICD implant for primary sudden cardiac death prevention. Mechanisms of improved sleep habit are unclear, but possibly associated with improved cardiac output with consistent heat rate during sleep on pacemaker. Further studies of larger scale are needed to validate this concept.
Author Disclosures: S. Kattel: None. M. Zafar: None. A.J. Samdani: None. Y. Saito: None.
- © 2014 by American Heart Association, Inc.