In:
Pacing and Clinical Electrophysiology, Wiley, Vol. 44, No. 10 ( 2021-10), p. 1657-1662
Kurzfassung:
Sleep apnea syndrome (SAS) has been reported to be associated with a higher incidence of ventricular arrhythmias. The aim of this study was twofold: (1) to investigate whether in SAS patients receiving an implantable cardioverter defibrillator (ICD) the severity of SAS was associated with the occurrence of ventricular arrhythmias; (2) to assess whether changes in nocturnal apnoic/hypopnoic episodes may favor the occurrence of life‐threatening arrhythmias, that is, sustained ventricular tachycardia (VT)/fibrillation (VF), requiring ICD intervention. Methods We enrolled 46 patients with documented SAS at polysomnography (apnea/hypopnea index [AHI] 〉 5) who also had a left ventricle ejection fraction (LVEF) 〈 35% and, according to primary prevention indications, implanted an ICD (Boston Scientific Incepta) able to daily monitor apnoic/hypopnoic episodes occurring during sleep. Patients were followed at 3‐month intervals. Results At a mean follow‐up of 18 months, 21 episodes of sustained VT/FV requiring ICD intervention were documented in eight patients (17.4%). Baseline AHI was significantly higher in patients with compared to those without ICD intervention. ICD interventions, however, were not preceded by any worsening of apnoic/hypopnoic episodes. The respiratory disturbance index (RDI) of the week during the event, indeed, was not different from that recorded during the previous 2 weeks (25.4 ± 11, 25.6 ± 10 and 25.1 ± 10, respectively; p = .9). Conclusions In patients with SAS who received an ICD for primary prevention of sudden death, those with ICD interventions showed a more severe form of the disease at baseline. ICD interventions, however, were not preceded by any significant changes in SAS severity.
Materialart:
Online-Ressource
ISSN:
0147-8389
,
1540-8159
Sprache:
Englisch
Verlag:
Wiley
Publikationsdatum:
2021
ZDB Id:
2037547-5
Bookmarklink