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Age-Specific Trends in the Incidence and In-Hospital Mortality of Acute Myocardial Infarction Over 30 Years in Japan - Report From the Miyagi AMI Registry Study.

Age-Specific Trends in the Incidence and In-Hospital Mortality of Acute Myocardial Infarction Over 30 Years in Japan - Report From the Miyagi AMI Registry Study.
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Cui Y, Hao K, Takahashi J, Miyata S, Shindo T, Nishimiya K, Kikuchi Y, Tsuburaya R, Matsumoto Y, Ito K, Sakata Y, Shimokawa H,


Cui Y, Hao K, Takahashi J, Miyata S, Shindo T, Nishimiya K, Kikuchi Y, Tsuburaya R, Matsumoto Y, Ito K, Sakata Y, Shimokawa H, (click to view)

Cui Y, Hao K, Takahashi J, Miyata S, Shindo T, Nishimiya K, Kikuchi Y, Tsuburaya R, Matsumoto Y, Ito K, Sakata Y, Shimokawa H,

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Circulation journal : official journal of the Japanese Circulation Society 2017 02 0281(4) 520-528 doi 10.1253/circj.CJ-16-0799
Abstract
BACKGROUND
We are now facing rapid population aging in Japan, which will affect the actual situation of cardiovascular diseases. However, age-specific trends in the incidence and mortality of acute myocardial infarction (AMI) in Japan remain to be elucidated.Methods and Results:We enrolled a total of 27,220 AMI patients (male/female 19,818/7,402) in our Miyagi AMI Registry during the past 30 years. We divided them into 4 age groups (≤59, 60-69, 70-79 and ≥80 years) and examined the temporal trends in the incidence and in-hospital mortality of AMI during 3 decades (1985-1994, 1995-2004 and 2005-2014). Throughout the entire period, the incidence of AMI steadily increased in the younger group (≤59 years in both sexes), while in the elderly groups (≥70 years in both sexes), the incidence significantly decreased during the last decade (all P<0.01). In-hospital cardiac mortality significantly decreased during the first 2 decades in elderly groups of both sexes (all P<0.01), whereas no further improvement was noted in the last decade irrespective of age or sex, despite improved critical care of AMI. CONCLUSIONS
These results provide the novel findings that the incidence of AMI has been increasing in younger populations and decreasing in the elderly, and that improvement in the in-hospital mortality of AMI may have reached a plateau in all age groups in Japan.

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