In elderly patients with leadless pacemakers who die of non-sudden causes (e.g., sepsis, organ failure, advanced dementia), what is the relative contribution of device-related complications (e.g., late perforation, thrombosis, endocarditis) to the terminal physiological cascade compared to the underlying frailty and comorbidities?
Device-related complications generally contribute minimally (<5%) to terminal physiological cascades compared to underlying comorbidities and frailty (>95%), though rare exceptions occur.
Major complications occur in only 1-2% of cases (Micra/Aveir registries), with late presentations being exceptionally rare
Terminal patients typically have 4+ major comorbidities (CHF, COPD, CKD, dementia) creating physiological stress that dwarfs device effects
Device-related symptoms (fatigue, low-grade fever) mimic terminal decline, with <5% autopsy rates in this population
While vigilance for device complications is warranted, palliative care should focus primarily on managing underlying conditions in terminal elderly patients. Routine device deactivation is generally unnecessary unless specific complication symptoms manifest.
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