Angiotensin II antagonism and the heart: valsartan in left ventricular hypertrophy

P A Thürmann1

  • 1Institute of Clinical Pharmacology, University Witten/Herdecke, Wuppertal, Germany. thuermann@klinikum-wuppertal.de

Cardiology
|August 18, 1999
PubMed

Insights

Valsartan effectively reduced left ventricular mass in patients with essential hypertension and left ventricular hypertrophy (LVH). This angiotensin II receptor antagonist offers a significant therapeutic option for managing LVH and improving cardiovascular outcomes.

Area of Science:

  • Cardiology
  • Pharmacology

Background:

  • Left ventricular hypertrophy (LVH) is a significant risk factor for cardiovascular disease.
  • Normalizing left ventricular mass is a key objective in antihypertensive therapy.

Purpose of the Study:

  • To compare the efficacy of valsartan (an angiotensin II receptor antagonist) with atenolol (a beta-blocker) in reducing left ventricular mass in patients with essential hypertension and LVH.

Main Methods:

  • A randomized, double-blind study involving 69 patients with essential hypertension and LVH.
  • Patients received either valsartan (80 mg/160 mg daily) or atenolol (50 mg/100 mg daily) for 8 months.
  • Echocardiography was used to assess left ventricular mass index (LVMI).

Main Results:

  • Both valsartan and atenolol significantly reduced blood pressure.
  • Valsartan treatment led to a greater reduction in LVMI (from 127 to 106 g/m²) compared to atenolol (from 127 to 117 g/m²).
  • Long-term valsartan treatment significantly reduced LVH in patients with essential hypertension.

Conclusions:

  • Valsartan is effective in reducing left ventricular hypertrophy in patients with essential hypertension.
  • Valsartan demonstrates a superior effect on LVH reduction compared to atenolol in this patient population.

Related Concept Videos

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...
Antihypertensive Drugs: Angiotensin II Receptor Blockers01:30

Antihypertensive Drugs: Angiotensin II Receptor Blockers

In the renin-angiotensin-aldosterone system, a hormone called angiotensin II plays a crucial role. It binds to the AT1 receptors in vascular smooth muscles coupled with Gq proteins. The activation of these receptors activates an enzyme called phospholipase C, which releases two molecules: inositol trisphosphate and diacylglycerol. These molecules cause a chain reaction that leads to the phosphorylation of myosin light chains and promotes interaction between actin and myosin, leading to smooth...
Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...
Heart Failure V: Medical Management01:30

Heart Failure V: Medical Management

Medical Management of Acute Decompensated Heart Failure (ADHF)The primary goals of therapy for patients hospitalized with acute decompensated heart failure (ADHF) include:Relieving symptomsOptimizing volume statusSupporting oxygenation and ventilationMaintaining cardiac output (CO) and end-organ perfusionIdentifying and addressing the cause of ADHFPreventing complicationsProviding patient education on factors precipitating HF exacerbationPlanning for dischargeOngoing monitoring and assessment...
Antihypertensive Drugs: Angiotensin-Converting Enzyme Inhibitors01:30

Antihypertensive Drugs: Angiotensin-Converting Enzyme Inhibitors

Angiotensin-converting enzyme (ACE), a vital component of the renin-angiotensin-aldosterone system, is abundant in lung endothelial cells. ACE converts the inactive decapeptide, angiotensin I, into the active octapeptide, angiotensin II. This potent vasoconstrictor narrows blood vessels, increasing resistance to blood flow and elevating blood pressure. Angiotensin II also stimulates aldosterone production, encouraging kidney cells to reabsorb more sodium and water from urine, thereby increasing...
Aortic Regurgitation III: Medical Management01:25

Aortic Regurgitation III: Medical Management

Aortic regurgitation (AR) is when the aortic valve does not close or seal properly, leading to backward blood circulation from the aorta into the left ventricle during diastole. Common causes of AR include rheumatic heart disease, congenital valve defects, and aortic root dilation. Managing AR requires a multifaceted approach to alleviate symptoms, preserve left ventricular function, and address the underlying cause of the regurgitation. Patients with symptomatic AR or significant left...