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Optimized Management of Endovascular Treatment for Acute Ischemic Stroke
Published on: January 18, 2018
Long term clinical outcomes of patients with ischemic stroke in primary care - a 9-year retrospective study
Jinghao Han1, Yue Kwan Choi1, Wing Kit Leung1
1Department of Family Medicine, New Territories East Cluster, Hospital Authority, Hong Kong, China.
Insights
Long-term outcomes for ischemic stroke patients in primary care are favorable. Statin use significantly reduces stroke recurrence and mortality, while lower diastolic blood pressure indicates higher risk.
Area of Science:
- Cardiovascular Medicine
- Neurology
- Primary Care Research
Background:
- Investigating long-term prognosis of ischemic stroke patients within primary care settings.
- Identifying risk factors for recurrent cardiovascular events and all-cause mortality post-stroke.
Purpose of the Study:
- To document long-term outcomes in ischemic stroke patients.
- To explore risk factors for recurrent cardiovascular events and all-cause mortality in primary care.
Main Methods:
- Retrospective cohort study in Hong Kong general out-patient clinics.
- Included ischemic stroke patients with regular follow-up from 2010 to 2018.
- Used Cox proportional hazard models with competing risk adjustment for cause-specific hazard ratios.
Main Results:
- 466 patients (mean age 71.5 years) followed for a median of 8.7 years.
- 17.2% experienced recurrent stroke; 12.2% developed coronary artery disease (CAD).
- Statin therapy significantly reduced recurrent stroke (csHR=0.476) and all-cause mortality (HR=0.693). Age was an independent risk factor for adverse outcomes. Female sex, antiplatelet use, and higher diastolic blood pressure predicted survival.
Conclusions:
- Ischemic stroke patients in primary care have a favorable long-term prognosis.
- Statin use is linked to decreased stroke recurrence and mortality.
- Lower baseline diastolic blood pressure is associated with increased mortality, emphasizing its clinical importance.
Background:
We aim to document the long-term outcomes of ischemic stroke patients and explore the potential risk factors for recurrent cardiovascular events and all-cause mortality in primary care.
Methods:
A retrospective cohort study performed at two general out-patient clinics (GOPCs) under Hospital Authority (HA) in Hong Kong (HK). Ischemic stroke patients with at least two consecutive follow-up visits during the recruitment period (1/1-30/6/2010) were included. Patients were followed up regularly till the date of recurrent stroke, cardiovascular event, death or 31/12/2018. The primary outcome was the occurrence of recurrent cerebrovascular event including transient ischemic stroke (TIA), ischemic stroke or hemorrhagic stroke. The secondary outcomes were all-cause mortality and coronary artery disease (CAD). We fit cox proportional hazard model adjusting death as competing risk factor to estimate the cause-specific hazard ratio (csHR).
Results:
A total of 466 patients (mean age, 71.5 years) were included. During a median follow-up period of 8.7 years, 158 patients (33.9%) died. Eighty patients (17.2%) had recurrent stroke and 57 (12.2%) patients developed CAD. Age was an independent risk factor for recurrent stroke, CAD and death. Statin therapy at baseline had a protective effect for recurrent stroke (csHR = 0.476; 95% confidence interval [CI] 0.285-0.796, P = 0.005) after adjusting death as a competing risk factor and all-cause mortality (HR = 0.693, 95% CI 0.486-0.968, P = 0.043). In addition, female sex, antiplatelet and a higher diastolic blood pressure (DBP) at baseline were also independent predictors for survival.
Conclusions:
Long term prognosis of ischemic stroke patients in primary care is favorable. Use of statin was associated with a significant decrease in stroke recurrence and mortality. Patients who died had a significant lower DBP at baseline, highlighted the need to consider both systolic and diastolic blood pressure in our daily practice.
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