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Published on: September 26, 2018
Management of hypertension: considerations involving cardiovascular risk reduction
1Harvard Medical School, Boston, Massachusetts.
Insights
Reducing blood pressure in hypertensive patients is a surrogate for preventing hypertension-related risks. Current therapies, while lowering blood pressure, may not adequately address underlying issues like atherosclerosis and metabolic disarray.
Area of Science:
- Cardiology
- Nephrology
- Endocrinology
Background:
- Hypertension management traditionally focuses on blood pressure reduction.
- This surrogate goal may not fully translate to reducing cardiovascular and renal complications.
- The effectiveness of current antihypertensive strategies in preventing atherosclerosis and related events needs re-evaluation.
Purpose of the Study:
- To examine the premise that blood pressure reduction is the ultimate goal in hypertension therapy.
- To investigate the potential contribution of metabolic disarray from antihypertensive agents to cardiovascular events.
- To explore whether the choice of antihypertensive agent influences outcomes beyond blood pressure control.
Main Methods:
- Review of clinical trial data and underlying mechanisms of hypertension.
- Analysis of observations linking antihypertensive agents to metabolic abnormalities.
- Examination of selective responses of left ventricular hypertrophy and renal injury to different agents.
Main Results:
- Antihypertensive therapy has not significantly impacted atherosclerosis progression or coronary events.
- Metabolic disarray, including electrolyte abnormalities and insulin resistance, is linked to certain antihypertensive agents (e.g., thiazides, beta-blockers).
- Left ventricular hypertrophy and renal injury progression show selective sensitivity to different antihypertensive agents.
Conclusions:
- Blood pressure reduction alone may be insufficient for comprehensive hypertension management.
- The selection of antihypertensive agents may significantly influence metabolic profiles and clinical outcomes.
- Future hypertension therapy should consider factors beyond blood pressure reduction to mitigate cardiovascular and renal risks.
Abstract:
Obvious, but often forgotten, is the premise that blood pressure reduction in the patient with hypertension is a surrogate for our real goal, which is reduction in the risks consequent to hypertension. This surrogate, a convenience for regulatory agencies, has therapeutic implications. As the array of antihypertensive agents available has grown, along with information from clinical trials and insights into underlying mechanisms, it has become reasonable to examine that premise. The overall success of antihypertensive therapy has been undeniable, but has not influenced the advance of atherosclerosis, primarily coronary events. Multiple observations suggest that metabolic disarray consequent to the use of antihypertensive agents, especially thiazides and beta-blockers, may have contributed to this scenario. Electrolyte abnormalities predispose to malignant arrhythmias and sudden death during myocardial infarction. Left ventricular hypertrophy, a major risk factor for coronary events, arrhythmias, and heart failure, responds selectively to antihypertensive agents. Similarly, the progression of renal injury in the hypertensive patient may be sensitive to the agents employed. Obesity and hypertension coexist frequently; moreover, evidence is growing that atherogenic abnormalities common in the obese patient, such as insulin resistance, not only occur frequently in the nonobese patient, but are also sensitive to the antihypertensive agent selected. Although predictions are risky, it seems safe to predict that the next chapter in antihypertensive therapy will examine whether we need to go beyond blood pressure reduction in selecting such therapy.
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