Hypertension and vascular disease

Area of Science:

• Cardiology
• Nephrology
• Neurology

Background:

• Antihypertensive drug therapy has significantly altered the clinical presentation of hypertension.
• Historically, severe untreated hypertension led to congestive heart failure, cerebral hemorrhage, and renal failure.
• In treated hypertensive patients, myocardial infarction and thrombotic stroke are now the predominant complications.

Purpose of the Study:

• To evaluate the impact of antihypertensive drug treatment on the natural history and complications of hypertension.
• To assess whether reducing blood pressure effectively mitigates atherosclerotic complications.
• To explore the relationship between hypertension, atherosclerosis, and lipoprotein metabolism.

Main Methods:

• Review of major therapeutic trials in hypertension.
• Analysis of complications in treated versus untreated hypertensive patients.
• Examination of experimental animal data on hypertension and atheromatous lesions.

Main Results:

• Major therapeutic trials have not demonstrated that blood pressure reduction prevents atherosclerotic complications.
• Hypertension may exacerbate atheromatous lesions, as suggested by animal studies.
• Elevated serum cholesterol in hypertensive patients might indicate atherosclerosis as the primary issue, with hypertension as a secondary complication.

Conclusions:

• Antihypertensive treatment has shifted the primary complications of hypertension.
• Evidence is lacking to support blood pressure reduction as a means to prevent atherosclerosis.
• The interplay between atherosclerosis, lipoprotein metabolism, and hypertension requires further investigation, potentially re-evaluating hypertension as a secondary complication.