Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association · 2015
Long-Term Mortality and Its Risk Factors in Stroke Survivors.
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Mathisen Sara Maria, Dalen Ingvild, Larsen Jan Petter, Kurz Martin
Аннотация
BACKGROUND: Stroke is one of the leading causes of mortality worldwide. Understanding the risk factors associated with stroke mortality is important to improve patient management. Few studies have examined long-term mortality and its associated predictive risk factors.
METHODS: We examined long-term mortality in 1137 patients with acute stroke and compared it to a geographically age- and sex-matched, stroke-free control group. We followed the stroke patients for as long as 16.4 years. In 1018 of these patients we assessed the effect of demographic, clinical, and hematological factors on mortality.
RESULTS: At the end of the study period, 51.7% of the patients and 32.7% of the stroke-free control individuals had died (hazard ratio 2.2, confidence interval 1.9-2.5, P < .001). A total of 72.5% of the patients and 53% of the controls with 12 years' follow-up (n = 570) had died (P < .001). Regression analyses indicate that, in addition to known risk factors such as age, diabetes, and stroke severity, both low cholesterol (P < .001) and hemoglobin (P < .002), hyperhomocysteinemia (P = .005), and elevated serum creatinine (P < .001) at index stroke are associated with increased long-term mortality.
CONCLUSIONS: Stroke patients surviving the first year after stroke have a markedly increased mortality rate as seen in long-term follow-up. Furthermore, the results from this study indicate that changes in creatinine, homocysteine, and hemoglobin should be followed more carefully as standard practice after acute stroke.
METHODS: We examined long-term mortality in 1137 patients with acute stroke and compared it to a geographically age- and sex-matched, stroke-free control group. We followed the stroke patients for as long as 16.4 years. In 1018 of these patients we assessed the effect of demographic, clinical, and hematological factors on mortality.
RESULTS: At the end of the study period, 51.7% of the patients and 32.7% of the stroke-free control individuals had died (hazard ratio 2.2, confidence interval 1.9-2.5, P < .001). A total of 72.5% of the patients and 53% of the controls with 12 years' follow-up (n = 570) had died (P < .001). Regression analyses indicate that, in addition to known risk factors such as age, diabetes, and stroke severity, both low cholesterol (P < .001) and hemoglobin (P < .002), hyperhomocysteinemia (P = .005), and elevated serum creatinine (P < .001) at index stroke are associated with increased long-term mortality.
CONCLUSIONS: Stroke patients surviving the first year after stroke have a markedly increased mortality rate as seen in long-term follow-up. Furthermore, the results from this study indicate that changes in creatinine, homocysteine, and hemoglobin should be followed more carefully as standard practice after acute stroke.