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[Differences between office and ambulatory control of hypertension in very elderly patients. The CARDIORISC -
José L Llisterri1, Francisco J Alonso, Manuel Gorostidi
1Centro de Salud Joaquín Benlloch, Valencia, España. jllisterric@medynet.com
Insights
In elderly patients with hypertension, clinic blood pressure (BP) control was only 21.5%, while ambulatory BP monitoring (ABPM) showed 42.1% control. This highlights the need for ABPM to accurately assess hypertension management in older adults.
Area of Science:
- Geriatric Medicine
- Cardiology
- Hypertension Management
Background:
- Hypertension is a common condition in the very elderly population.
- Effective blood pressure (BP) control is crucial for reducing cardiovascular risk in this demographic.
Purpose of the Study:
- To evaluate hypertension control rates in treated hypertensive patients aged 80 years and older.
- To compare BP control based on clinic measurements versus ambulatory BP monitoring (ABPM).
Main Methods:
- Utilized data from the Spanish Society of Hypertension ABPM Registry (CARDIORISC - MAPAPRES project).
- Included a large database of 33,829 patients, with 2,311 aged 80 years or older.
- Defined hypertension control as clinic BP <140/90mmHg and 24-hour ABPM <130/80mmHg.
Main Results:
- Clinic BP control was achieved in 21.5% of elderly hypertensives.
- Ambulatory BP monitoring revealed a higher control rate of 42.1%.
- Prevalence of masked hypertension was 7.0%, and white coat hypertension was 27.6%.
Conclusions:
- Clinic BP measurements may overestimate hypertension control in the very elderly.
- Ambulatory BP monitoring provides a more accurate assessment of BP control in this age group.
- Increased utilization of ABPM is recommended for managing hypertension in elderly patients.
Background And Objective:
Hypertension is highly prevalent in the very elderly. We studied control rates of hypertension according to clinic blood pressure (BP) and ambulatory BP monitoring (ABPM) in treated hypertensives aged > or =80 years.
Patients And Method:
Data came from the Spanish Society of Hypertension ABPM Registry (CARDIORISC - MAPAPRES project), which comprises a nation-wide network of more than 1,000 physicians sending standardized ABPM registries via web. Between June 2004 and April 2007 we obtained a 33.829-patient database. Control of hypertension was defined at the clinic when office BP was <140/90mmHg and at the ABPM when mean BP during the 24-h period was <130/80mmHg.
Results:
We identified 2,311 patients (6.8%) aged > or =80 years. Mean age (SD) was 83.1 (3.2) years and 63% were women. Control of clinic BP was observed in 21.5% of cases (95%CI: 19.1-23.9) and control of 24-h BP in ABPM was 42.1% (95%CI: 39.7-45.3). Prevalence of masked hypertension was 7.0% (95%CI: 6.0-8.0) and prevalence of office-resistant control (white coat) was 27.6% (95% CI: 25.7-29.4). Diabetes, kidney disease, and duration of hypertension were associated with lack of control in ABPM.
Conclusions:
In very old hypertensives, control of clinic BP was 21.5% but ambulatory-based hypertension control was 42.1%. Physicians should be aware that the likelihood of misestimating BP control is high in these subjects. A wider use of ABPM in the elderly with hypertension should be considered.
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Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
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