Related Experiment Video

Updated: Sep 27, 2026

Measuring Ascending Aortic Stiffness In Vivo in Mice Using Ultrasound
10:08

Measuring Ascending Aortic Stiffness In Vivo in Mice Using Ultrasound

Published on: December 2, 2014

Caffeine increases aortic stiffness in hypertensive patients

Charalambos Vlachopoulos1, Kozo Hirata, Christodoulos Stefanadis

  • 1Medical Professorial Unit, St. Vincent's Hospital and Clinic, University of New South Wales, Sydney, Australia. cvlachop@otenet.gr

American Journal of Hypertension
|January 9, 2003
PubMed

Insights

Caffeine consumption acutely increases aortic stiffness in treated hypertensive patients, raising concerns for cardiovascular risk. This study highlights caffeine

Area of Science:

  • Cardiovascular Physiology
  • Pharmacology

Background:

  • Caffeine is a widely consumed substance.
  • Aortic stiffness is a key cardiovascular performance indicator and risk predictor.
  • Hypertension management often involves lifestyle considerations.

Purpose of the Study:

  • To investigate the acute effects of caffeine on aortic stiffness.
  • To assess caffeine's impact in patients with treated hypertension.

Main Methods:

  • Randomized, placebo-controlled, double-blind, cross-over study.
  • 12 treated hypertensive patients received 250 mg caffeine or placebo.
  • Aortic stiffness measured via carotid-femoral pulse wave velocity over 3 hours.

Main Results:

  • Caffeine significantly increased systolic blood pressure and pulse pressure.
  • Aortic stiffness, measured by pulse wave velocity, increased significantly post-caffeine.
  • These effects persisted for 3 hours, peaking at 60 minutes.

Conclusions:

  • Caffeine acutely and unfavorably affects aortic stiffness in treated hypertensive patients.
  • This finding suggests potential cardiovascular risks associated with caffeine intake in this population.
  • Highlights the importance of considering caffeine consumption in hypertension management.
Abstract

More Related Videos

Measuring the Stiffness of Ex Vivo Mouse Aortas Using Atomic Force Microscopy10:35

Measuring the Stiffness of Ex Vivo Mouse Aortas Using Atomic Force Microscopy

Published on: October 19, 2016

Measuring the Carotid to Femoral Pulse Wave Velocity (Cf-PWV) to Evaluate Arterial Stiffness05:51

Measuring the Carotid to Femoral Pulse Wave Velocity (Cf-PWV) to Evaluate Arterial Stiffness

Published on: May 3, 2018

Related Concept Videos

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 and Regulation of Blood Pressure01:18

Hypertension and Regulation of Blood Pressure

Hypertension, the most common cardiovascular disease, is diagnosed through repeated measurements of elevated blood pressure. Its risks, including damage to the kidney, heart, and brain, are directly proportional to blood pressure levels. Starting from 115/75 mm Hg, the risk of cardiovascular disease doubles with each increment of 20/10 mm Hg. The diagnosis relies on blood pressure measurements, not on patient symptoms, as hypertension is often asymptomatic until end-organ damage is imminent or...
Antihypertensive Drugs: Action of β1 Blockers01:17

Antihypertensive Drugs: Action of β1 Blockers

β1-receptors are primarily located in the heart and kidneys. In cardiac myocytes, these receptors interact with neurotransmitters released by the sympathetic nervous system during heightened activity or danger. As a result, β1-receptors get activated, initiating a series of biochemical processes. Excessive activation of beta receptors due to chronic stress can abnormally increase heart rate and contractility, resulting in high blood pressure or hypertension. To counteract this, β1-blockers...
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...
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...
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...