Clinical studies and therapeutic trials in systolic hypertension

H Smulyan1

  • 1State University of New York, Health Science Center at Syracuse, New-York, USA.

Pathologie-Biologie
|October 16, 1999
PubMed

Insights

Isolated systolic hypertension in aging is not benign. Antihypertensive therapy effectively reduces cardiovascular risks, with gradual treatment recommended to avoid diastolic hypotension.

Area of Science:

  • Gerontology
  • Cardiovascular Medicine
  • Pharmacology

Background:

  • Aging is frequently associated with isolated systolic hypertension (ISH), characterized by a disproportionate rise in systolic blood pressure (SBP) over diastolic blood pressure (DBP).
  • Historically, ISH was considered benign and difficult to treat, but research now indicates significant cardiovascular risks.
  • Untreated ISH contributes to stroke, myocardial infarction, congestive heart failure, and cardiovascular mortality.

Purpose of the Study:

  • To review the current understanding of isolated systolic hypertension in the aging population.
  • To discuss the established and potential therapeutic strategies for managing ISH.
  • To highlight the importance of gradual blood pressure reduction to prevent adverse effects.

Main Methods:

  • Literature review of studies on aging, hypertension, and cardiovascular outcomes.
  • Analysis of current guidelines for antihypertensive therapy in older adults.
  • Evaluation of drug classes used for ISH management, including potential novel agents.

Main Results:

  • Antihypertensive therapy, including thiazide diuretics, calcium channel blockers, ACE inhibitors, and beta-blockers, significantly reduces cardiovascular event risks in patients with ISH.
  • Nitrates show potential for improving arterial distensibility, a key feature of ISH, though formal studies are lacking.
  • Gradual reduction of SBP is crucial to mitigate risks associated with diastolic hypotension during treatment.

Conclusions:

  • Isolated systolic hypertension in aging requires active management due to its association with serious cardiovascular events.
  • Established antihypertensive drug classes are effective, and nitrates may offer additional benefits.
  • Therapeutic strategies must prioritize gradual SBP reduction to maintain safety and efficacy.

Related Concept Videos

Clinical Trials01:16

Clinical Trials

Clinical trials are prospective experimental studies conducted on humans to determine the safety and efficacy of treatments, drugs, diet methods, and medical devices. Using statistics in clinical trials enables researchers to derive reasonable and accurate conclusions from the collected data, allowing them to make wise decisions in uncertain situations. In medical research, statistical methods are crucial for preventing errors and bias.
There are four phases in a clinical trial. A phase one...
Clinical Trials: Overview01:11

Clinical Trials: Overview

Clinical development focuses on how the drug will interact with the human body and encompasses four key phases of clinical trials, each serving a specific purpose in assessing the safety and effectiveness of new drugs. These phases overlap and build upon one another. Phase I involves a small group of healthy volunteers (typically 20-80 individuals) or, in cases where significant toxicity is expected, patients with the targeted disease, such as cancer or AIDS. The volunteers are tested for...
Heart Failure Drugs: Inhibitors of Renin-Angiotensin System01:26

Heart Failure Drugs: Inhibitors of Renin-Angiotensin System

The activation of the sympathetic nervous system and the renin-angiotensin-aldosterone system (RAAS) contributes to cardiac remodeling, and inhibiting the RAAS is a pharmacological target in heart failure management. As a result, neurohumoral modulation is a crucial treatment principle for managing heart failure. This approach involves using medications like ACE inhibitors (ACEIs), angiotensin receptor blockers (ARBs), β-blockers, mineralocorticoid receptor antagonists (MRAs), and neutral...
Hypertension II: Pathophysiology01:29

Hypertension II: Pathophysiology

Hypertension is a chronic condition in which the blood's force against artery walls is excessively high, posing risks such as heart disease. The condition's underlying mechanisms involve complex interactions among the cardiovascular, kidney, and autonomic nervous systems.Renin-Angiotensin-Aldosterone System (RAAS): This system significantly influences blood pressure regulation. When blood pressure decreases, the kidneys secrete renin. This enzyme transforms angiotensinogen, a plasma protein,...
Hypertension III: Clinical Manifestations and Diagnostic Studies01:30

Hypertension III: Clinical Manifestations and Diagnostic Studies

Hypertension is asymptomatic and also referred to as the "silent killer" until it progresses to a severe stage or causes target organ disease. Patients may experience symptoms stemming from the strain on blood vessels and tissues in various organs or the heart's increased workload.Physical exams might show no abnormalities other than high blood pressure. Signs of vascular damage, when present, correspond to the organs supplied by the affected vessels, leading to target organ damage. For...
Hypertension IV: Drug Therapy and Lifestyle Modifications01:28

Hypertension IV: Drug Therapy and Lifestyle Modifications

Multiple classes of antihypertensive medications are employed in treating hypertension. The most commonly recommended first-line treatments include:Thiazide Diuretics, such as chlorthalidone, increase sodium and water excretion from the body, reducing blood volume and blood pressure.Angiotensin-converting enzyme inhibitors, like lisinopril, block the conversion of angiotensin I to II, a potent vasoconstrictor lowering blood pressure.Angiotensin II Receptor Blockers (ARBs) prevent angiotensin II...