Introduction
Stroke is one of the leading causes of disability and mortality
in developed countries. As the population ages, more than
half of patients affected by stroke will be over 75 years of age.
Older patients experience a greater degree of disability and
mortality [1] and are at risk of receiving suboptimal care than
younger ones [2–4]. Thus, identification of predictors of
mortality in older stroke patients is essential for selecting
high-risk patients for optimal treatment.
Although several studies have identified some predictors of
short- and long-term mortality after stroke in general population,
few studies have focused on older group [5–7]. Data
on predictors of long-term mortality in older stroke patients
are scarce [8]. Furthermore, few studies have been performed
in Asia. Different patterns of stroke mortality, subtypes
and risk-factor profiles in Chinese patients as compared
with Western countries have been documented [9]. We aimed
to identify the independent predictors of both short- and
long-term mortality after acute ischaemic stroke in older
Chinese patients.
Methods
Study design and participants
We retrospectively reviewed the medical records and database
and extracted relevant data of all consecutive patients
admitted to a tertiary hospital in Taiwan within 24 hours after
stroke onset between 1 January 2008 and 30 June 2009. All of
the patients were older than 70 years and had a diagnosis
of acute ischaemic stroke according to the International Classification
of Diseases, 9th Revision, Clinical Modification
(ICD-9-CM) codes 433, 434 and 436. Data on patients with
recurrent stroke, transient ischemic attack and late admission
(>24 hours after stroke onset) were not collected. The protocol
was approved by the hospital’s institutional review board.
IntroductionStroke is one of the leading causes of disability and mortalityin developed countries. As the population ages, more thanhalf of patients affected by stroke will be over 75 years of age.Older patients experience a greater degree of disability andmortality [1] and are at risk of receiving suboptimal care thanyounger ones [2–4]. Thus, identification of predictors ofmortality in older stroke patients is essential for selectinghigh-risk patients for optimal treatment.Although several studies have identified some predictors ofshort- and long-term mortality after stroke in general population,few studies have focused on older group [5–7]. Dataon predictors of long-term mortality in older stroke patientsare scarce [8]. Furthermore, few studies have been performedin Asia. Different patterns of stroke mortality, subtypesand risk-factor profiles in Chinese patients as comparedwith Western countries have been documented [9]. We aimedto identify the independent predictors of both short- andlong-term mortality after acute ischaemic stroke in olderChinese patients.MethodsStudy design and participantsWe retrospectively reviewed the medical records and databaseand extracted relevant data of all consecutive patientsadmitted to a tertiary hospital in Taiwan within 24 hours afterstroke onset between 1 January 2008 and 30 June 2009. All ofthe patients were older than 70 years and had a diagnosisof acute ischaemic stroke according to the International Classificationof Diseases, 9th Revision, Clinical Modification(ICD-9-CM) codes 433, 434 and 436. Data on patients withrecurrent stroke, transient ischemic attack and late admission(>24 hours after stroke onset) were not collected. The protocolwas approved by the hospital’s institutional review board.
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