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Risk-based classification of hypertension and the role of combination therapy
1Division of Nephrology, University of Maryland School of Medicine, Baltimore, MD 21202, USA. mweir@medicine.maryland.edu
Insights
Guidelines for hypertension management increasingly integrate blood pressure (BP) thresholds with overall cardiovascular risk assessment. Achieving BP goals often requires multiple antihypertensive medications.
Area of Science:
- Cardiology
- Public Health
- Clinical Guidelines
Background:
- A continuous relationship exists between elevated blood pressure (BP) and cardiovascular risk.
- National and international guidelines address hypertension classification, prevention, and management.
- Recent guidelines (2003, 2005, 2007) show evolving approaches to hypertension diagnosis and treatment.
Purpose of the Study:
- To review and compare different approaches to hypertension classification and management.
- To highlight the shift towards incorporating global cardiovascular risk assessment.
- To emphasize the role of multiple antihypertensive agents in achieving treatment goals.
Main Methods:
- Analysis of national and international hypertension guidelines (JNC, Hypertension Writing Group, European guidelines).
- Comparison of classification systems based on BP thresholds versus global risk assessment.
- Review of recommendations for prevention, detection, evaluation, and treatment of hypertension.
Main Results:
- Guidelines increasingly use BP thresholds alongside global cardiovascular risk factors for diagnosis and management.
- Patients without sustained high BP may still have significant vascular event risk due to other factors.
- European guidelines emphasize multivariate risk assessment and treatment goals.
- Multiple antihypertensive agents are frequently necessary to achieve BP targets.
Conclusions:
- Hypertension management strategies are evolving to incorporate comprehensive cardiovascular risk assessment.
- A multi-faceted approach, considering BP levels and additional risk factors, is crucial.
- Pharmacological treatment often requires combination therapy to effectively manage hypertension.
Abstract:
The recognition of a continuous relationship between elevated blood pressure (BP) and cardiovascular risk has influenced national and international guidelines for the classification, prevention, and management of hypertension. The most recent report (2003) of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure uses BP thresholds to define categories of normal, prehypertension, and hypertension. A new definition proposed by the Hypertension Writing Group in 2005 offers an approach to diagnosis and management based on global or total risk. Thus, even in the absence of sustained elevations in BP, patients may have a moderate to high risk of vascular events due to the presence of additional cardiovascular risk factors, disease markers, and target organ damage. The 2007 European guidelines continue to classify hypertension based on cutoffs while also placing emphasis on multivariate formulations for cardiovascular risk assessment and goals of therapy. All 3 sets of guidelines acknowledge the necessity of using > or =2 antihypertensive agents to attain BP goals in many patients.
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