Anzeige
Erschienen in:
01.02.2013 | Original Contribution
Are the elderly different?
Factors influencing mortality after percutaneous coronary intervention with stent implantation
Erschienen in: Zeitschrift für Gerontologie und Geriatrie | Ausgabe 2/2013
Einloggen, um Zugang zu erhaltenAbstract
Background
The aim of this study was to investigate factors influencing mortality after percutaneous coronary intervention (PCI) in patients aged ≥ 75 years compared to younger patients.
Patients and methods
A total of 1,809 coronary heart disease (CHD) patients after PCI with stent implantation in our hospital were assessed. Kaplan–Meier analyses with log-rank test and Cox regression analyses were performed on three predefined models concerning primary endpoint of all-cause mortality. Model 1 was a univariate analysis of the influence of age dichotomized by age 75 years on the primary endpoint. Model 2 included age and classical cardiovascular risk factors (CVRFs, e.g., body mass index (BMI), smoking, diabetes, and hypertension). Model 3 consisted of age, classical CVRFs, and additional factors (e.g., medication; hemoglobin, peripheral arterial disease (PAD), low-density lipoprotein cholesterol (LDL-C) and creatinine levels, and left ventricular ejection fraction (LVEF)).
Results
In the mean follow-up of 137 ± 61 weeks 375 patients died. Age ≥ 75 years was significantly related to mortality in all models. In model 3, previous stroke, PAD, diabetes, elevated levels of serum creatinine, and increased LDL-C were related to elevated mortality, higher hemoglobin levels, and LVEF > 50% were associated with decreased mortality in all patients and in patients < 75 years. In patients ≥ 75 years arterial hypertension was associated with poor outcome (hazard ratio (HR) 7.989, p = 0.040), previous antiplatelet therapy showed reduced mortality (HR 0.098, p = 0.039).
Conclusion
Although risk factors such as previous stroke, PAD, diabetes, renal insufficiency, and anemia were predictors for death in all patients and patients < 75 years, in the elderly only arterial hypertension increased, whereas treatment with platelet inhibitors decreased mortality.