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Risk factors for ischaemic heart disease and stroke mortality in young and old hypertensive patients
A Palmer1, C Bulpitt, G Beevers
1Division of Geriatric Medicine, Royal Postgraduate Medical School, Hammersmith Hospital, Birmingham, UK.
Insights
Urea and smoking are key predictors of cardiovascular death in younger hypertensive women. Cholesterol predicts ischemic heart disease death in all patients, but not stroke.
Area of Science:
- Cardiovascular epidemiology
- Clinical research
- Hypertension management
Background:
- Cardiovascular disease remains a leading cause of mortality worldwide.
- Hypertension is a major modifiable risk factor for cardiovascular events.
- Understanding age-specific predictors of cardiovascular mortality is crucial for targeted interventions.
Purpose of the Study:
- To identify predictors of cardiovascular mortality in hypertensive patients.
- To investigate age-related differences in these predictors.
- To differentiate predictors for ischemic heart disease (IHD) and stroke mortality.
Main Methods:
- Longitudinal study of 10,186 hypertensive patients in the UK.
- Analysis of cardiovascular mortality (IHD and stroke deaths).
- Assessment of predictors including cholesterol, urea, smoking, and age.
Main Results:
- Cholesterol predicted IHD death in all men and women.
- Urea and smoking were significant predictors of IHD and stroke death in men and women under 60.
- The impact of urea and smoking on mortality decreased in women aged 60 and older.
Conclusions:
- Urea and smoking are significant risk factors for stroke and IHD death in younger hypertensive women (<60 years).
- These risk factors are less influential in older hypertensive women (≥60 years).
- Cholesterol is a consistent predictor of IHD death across all age groups in this hypertensive cohort.
Abstract:
We investigated the predictors of cardiovascular mortality at different ages in a longitudinal study of 10186 hypertensive patients attending clinics in the UK. There were 7374 patients (51% were men) < 60 years of age and 2799 patients (44% men) were > or = 60 years. For IHD death the age-adjusted relative risks (RRs) and 95% confidence intervals (CI) for a 1 mmol/l increase in cholesterol were RR = 1.17 (1.07, 1.27) (men) and RR = 1.22 (1.12, 1.33) (women). The RRs for stroke were 0.99 (men) and 1.07 (women). In men and younger women, urea and smoking were important predictors of IHD and stroke death. Age differences were present in women for both urea and smoking. For IHD in women, smoking: RR = 2.65 (1.80, 3.89) (< 60 years) and RR = 1.38 (1.01, 1.88) (> or = 60 years). For stroke in women, smoking: RR = 2.03 (1.23, 3.35) (< 60 years) and RR = 1.06 (0.70, 1.61) (> or = 60 years). We conclude that urea and smoking are important risk factors for stroke and IHD death in hypertensive women aged < 60 years, but are less important in those aged over 60 years. Cholesterol predicted IHD death in all men and women, but did not predict stroke death.
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