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Profile of hypertensives as a determinant of long-term antihypertensive medication needs
Insights
This study on hypertension treatment found that initial diastolic blood pressure and age predict long-term medication needs. Higher initial diastolic pressure significantly increases the likelihood of requiring a second medication within two years.
Area of Science:
- Cardiovascular Medicine
- Public Health
- Pharmacology
Background:
- Hypertension management requires understanding long-term medication needs.
- Worksite stepped-care programs offer a structured approach to treating hypertension.
- Predicting medication requirements is crucial for effective patient management.
Purpose of the Study:
- To identify patient profiles at entry that predict long-term medication needs in a worksite hypertension treatment program.
- To analyze the therapeutic experience and medication escalation patterns in hypertensive patients.
- To determine factors influencing the need for additional antihypertensive drugs beyond initial diuretic therapy.
Main Methods:
- A cohort of 110 untreated hypertensive patients with elevated blood pressure (BP ≥ 160/95 mm Hg) participated in a stepped-care program.
- Patients were categorized into three groups based on initial diastolic blood pressure (DBP) levels.
- A life table method was used to analyze 5-year cumulative rates of adding a second drug to initial diuretic treatment.
Main Results:
- Within two years, cumulative rates of adding a second drug were 64% (Group A, DBP ≥ 105), 33% (Group B, DBP 95-104), and 23% (Group C, DBP < 95).
- Medication needs stabilized after the second year across all groups.
- Blood pressure control (<160/95 mm Hg) was achieved in 78% in year one, rising to 96% by year five.
Conclusions:
- Initial diastolic blood pressure and patient age are key predictors of long-term medication requirements.
- Younger nonwhite and white males with higher initial DBP are more likely to need a second medication within the first year.
- The need for a second antihypertensive drug typically becomes evident within the first two years of treatment.
Abstract:
The experience of 110 hypertensives who participated in a worksite stepped-care treatment program has been examined to draw a patient profile at entry that would determine medication needs on a long-term basis. Patients entered untreated with a blood pressure (BP) level of greater than or equal to 160 mm Hg systolic and/or greater than or equal to 95 mm HG diastolic (DBP) and had a minimum follow-up of 1 year. Treatment was initiated with diuretics, and additional drugs were added as necessary to achieve BP control. Patients were divided into three groups according to initial DBP levels: Group A (33 patients, greater than or equal to 105 mm Hg), Group B (43 patients, 95-104 mm Hg), and Group C (34 patients, less than 95 mm Hg). Using a life table method, we analyzed the therapeutic experience of these patients to obtain 5-year cumulative rates of adding a second drug to diuretics. Within the first 2 years of treatment, the cumulative rates were: 64% in Group A, 33% in Group B, and 23% in Group C. In all three groups the rates after the second year remained stable. This stepped-care approach resulted in BP control (less than 160/95) which ranged from 78% in the first year to 96% in the fifth year. Findings suggest that initial DBP level and age are principal factors in determining medication needs. Furthermore, at higher DBP levels, younger nonwhite and younger white males are most likely to require a second drug within the first year of treatment. The need for a second drug is apparent within the first 2 years.