Background: Percutaneous coronary intervention (PCI) is safe and effective in very elderly patients, defined as those who are age ≥85 years, with acute coronary syndrome (ACS). However, the prognostic factors remain unknown. The association between activities of daily living (ADL) and the prognosis after PCI has not yet been investigated. Hypothesis: Better ADL is associated with better 1-year prognosis. Methods: This retrospective study included 91 consecutive very elderly patients with ACS. We calculated the Barthel Index (BI) as an indicator for ADL. Patients were classified into 2 groups according to BI: high BI (≥85) and low BI (<85). The BI was assessed both on admission (pre-BI) and at discharge (post-BI). Results: In the 91 patients (mean age, 88.2 ± 3.0 years, 52% male), 1-year mortality was 33%. The Cox regression model demonstrated that low pre-BI was not a risk factor for 1-year mortality (hazard ratio: 0.73, 95% confidence interval [CI]: 0.30-1.78, P = 0.490). However, post-BI was significantly associated with 1-year mortality (hazard ratio: 0.25, 95% CI: 0.11-0.57, P = 0.001). The 1-year mortality of the high and the low post-BI group was estimated as 21% (95% CI: 12%-35%) and 62% (95% CI: 42%-82%), respectively. A 5-unit decrease in post-BI was related to a 1.10-fold increased risk for 1-year mortality (95% CI: 1.05-1.15, P < 0.001). Conclusions: Activities of daily living at discharge, although not before admission, may be a useful predictor for 1-year mortality in very elderly patients undergoing PCI for ACS.
IntroductionIn elderly patients who are affected by comorbidities, primary percutaneous coronary intervention (PCI) for acute coronary syndrome (ACS) seems to be a promising strategy. 1 As PCI has become a safer and less invasive procedure, the very elderly population-defined as those age ≥85 years-is increasingly being referred for PCI, particularly in the setting of ACS. Although evidence on ACS in very elderly patients is scarce, a few studies have reported clinical outcomes related to this topic. A retrospective cohort study reported that long-term survival of patients age ≥90 years who underwent PCI was not inferior to those who were included in a Minnesota cohort matched by age and sex.2 Other studies have also reportedThe authors have no funding, financial relationships, or conflicts of interest to disclose.that PCI for patients with ACS who were ≥85 years was safe, feasible, and effective. 3,4 However, most patients with advanced age have disabilities such as dementia, cerebral infarction sequelae, and muscle weakness, all of which can influence their prognosis. This study aimed to confirm the hypothesis that better activities of daily living (ADL) is associated with better prognosis in very elderly patients with ACS who underwent PCI.
Methods
Study DesignThis study retrospectively included 91 consecutive patients, age ≥85 years, who were admitted to our hospital for ACS and underwent primary PCI between January 2007 and January 2014. We reviewed the medical records of all patients ...