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Risk factors for death in treated hypertensive patients. Report from the D.H.S.S. Hypertension Care Computing Project
Insights
This study identified key factors influencing survival in treated hypertensive patients. Renal function impairment and systolic blood pressure were critical predictors of cardiovascular death.
Area of Science:
- Cardiology
- Nephrology
- Public Health
Background:
- Hypertension is a major global health concern, necessitating identification of prognostic factors for improved patient outcomes.
- Understanding factors influencing survival in treated hypertensive individuals is crucial for clinical management and public health strategies.
Purpose of the Study:
- To identify presenting factors that independently predict survival in a large cohort of treated hypertensive patients.
- To determine the relative importance of various clinical and biochemical parameters in cardiovascular mortality among hypertensives.
Main Methods:
- A prospective study involving 2587 treated hypertensive patients followed for an average of 4 years.
- Analysis of baseline characteristics including age, renal function, smoking, blood pressure, proteinuria, medical history, and retinal changes.
- Statistical methods to identify independent risk factors for cardiovascular death.
Main Results:
- Independent risk factors for cardiovascular death included age, impaired renal function, smoking, and systolic blood pressure at presentation.
- Proteinuria, history of myocardial infarction, and retinal changes of accelerated hypertension were also significant predictors.
- Elevated serum cholesterol and uric acid levels were not independent risk factors in this hypertensive cohort.
Conclusions:
- Impaired renal function is a particularly critical independent risk factor for cardiovascular death in hypertensive patients.
- While some factors align with general population data, the significance of renal function and the lack of independent risk from serum cholesterol highlight unique aspects of hypertension management.
- These findings underscore the importance of comprehensive assessment and management of hypertension, with a focus on renal health.
Abstract:
A prospective study was performed to determine factors at presentation influencing survival in 2587 treated hypertensive patients who were followed for an average of 4 years. 86% had been referred to hospital clinics with hypertension and 14% were seen solely by their general practitioners. Of the 156 deaths, 81% were from cardiovascular causes. Independent risk factors for cardiovascular death were age, impairment of renal function, smoking habits, and systolic blood-pressure before treatment. Other independent factors of importance were proteinuria, history of myocardial infarction, and retinal changes of accelerated hypertension. Increased weight, serum cholesterol, and serum uric acid were not independent risk factors. Although these results agree substantially with data for normal populations, notable exceptions were impairment of renal function, which was very important in hypertensives, and raised serum cholesterol, which was not an independent risk factor in this hypertensive population.