Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Antihypertensive Drugs: Vasodilators01:23

Antihypertensive Drugs: Vasodilators

Vasodilators, primarily affecting the smooth muscles within arterial and venous walls, are commonly used for hypertension treatment. Medications such as minoxidil and hydralazine primarily target arteries and arterioles, while sodium nitroprusside acts on arterioles and venules. Minoxidil, functioning as a prodrug, is metabolized by hepatic sulfotransferase into its active form, minoxidil sulfate, after oral administration. This metabolite binds to the sulfonylurea receptor (SUR) component of...
Antianginal Drugs: Nitrates and β-Blockers01:16

Antianginal Drugs: Nitrates and β-Blockers

In cardiovascular health, antianginal drugs combat angina pectoris — a condition marked by chest pain owing to diminished blood flow to the heart.
Organic nitrates,  such as nitroglycerin, play a pivotal role. Once metabolized, they liberate nitric oxide, a molecular marvel. Nitric oxide triggers guanylyl cyclase and augments cGMP production. This biochemical cascade orchestrates the relaxation of vascular smooth muscles, ushering in vasodilation and enhancing coronary blood flow. Administered...
Hypertension I: Introduction01:28

Hypertension I: Introduction

Hypertension is a widespread, long-term medical condition where blood pressure in the arteries remains elevated. It is characterized by systolic blood pressure readings of 130 mm Hg or above or diastolic blood pressure (DBP) readings of 80 mm Hg or higher. Unmanaged hypertension poses significant health risks, making the distinction between primary (or essential) hypertension and secondary hypertension crucial, as their management and implications vary.Primary HypertensionPrimary hypertension,...
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,...
Treatment for Pulmonary Arterial Hypertension: Phosphodiesterase Inhibitors01:28

Treatment for Pulmonary Arterial Hypertension: Phosphodiesterase Inhibitors

Phosphodiesterase 5 (PDE5) inhibitors are potent enzymes that function to hydrolyze cyclic nucleotides to their corresponding 5' monophosphates. Their unique biochemical properties have been applied in treating Pulmonary Arterial Hypertension (PAH).
Among the PDE5 inhibitors, sildenafil (Revatio) stands out as a competitive and selective inhibitor. It operates by elevating cellular levels of cGMP and augmenting signaling through the cGMP-PKG pathway, promoting vasodilation. Upon oral...
Alterations in Blood Pressure01:30

Alterations in Blood Pressure

Alterations in blood pressure, such as hypertension (high blood pressure) and hypotension (low blood pressure), significantly affect human health. Understanding these conditions' classifications, causes, and symptoms is essential for effective management and treatment.
Hypertension (High blood pressure)
Hypertension occurs when blood pressure readings consistently exceed the normal range. It is diagnosed when systolic blood pressure (the top number, indicating pressure while the heart beats)...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Intra-Individual Variability of Myocardial Blood Flow and Flow Reserve Assessed by [<sup>15</sup>O]H<sub>2</sub>O-PET in Patients with Angina and No Obstructive Coronary Disease.

Diagnostics (Basel, Switzerland)·2026
Same author

Adult reference values for spirometry, body plethysmography and diffusing capacity adjusted for sex, age, weight, height or arm span - the Danish lung function material (DALFUMAT) study.

European clinical respiratory journal·2026
Same author

Compared to total serum testosterone, calculated free testosterone has a stronger association with lean mass, muscle strength, power, and physical function in older men.

Aging clinical and experimental research·2025
Same author

[<sup>15</sup>O]H<sub>2</sub>O myocardial perfusion positron emission tomography: Added value of relative stress perfusion deficit in the prediction of significant coronary artery stenosis in a mixedpopulation.

Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology·2024
Same author

The GLP-1-mediated gut-kidney cross talk in humans: mechanistic insight.

American journal of physiology. Cell physiology·2023
Same author

<sup>82</sup>Rb and [<sup>15</sup>O]H<sub>2</sub>O myocardial perfusion PET imaging: a prospective head to head comparison.

Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology·2023

Related Experiment Videos

[Glyceryl nitrates may cause hypertension].

Peter Mørup1, Tine Holbæk Levinsen, Peter Hovind

  • 1Klinisk, Fysiologisk og Nuklearmedicinsk Afdeling, Glostrup Hospital, 2600 Glostrup, Denmark. peter@moerup.org

Ugeskrift for Laeger
|May 19, 2011
PubMed
Summary

An 82-year-old woman experienced paradoxical hypertension after receiving glyceryl trinitrate during a tilt table test. This rare response may be linked to cerebral blood flow autoregulation issues.

Area of Science:

  • Cardiology
  • Neurology

Background:

  • Orthostatism is a condition characterized by a drop in blood pressure upon standing.
  • Glyceryl trinitrate (nitroglycerin) is commonly used to treat chest pain and manage blood pressure.

Observation:

  • An 82-year-old female patient with orthostatism received a standard dose of glyceryl trinitrate during a tilt table test.
  • Ten minutes post-administration, she exhibited a paradoxical hypertensive response, with blood pressure rising to 205/111 mmHg.

Findings:

  • The patient's response was identified as paradoxical hypertension, potentially triggered by glyceryl trinitrate, orthostatism, and carotid artery massage.
  • This represents the third documented case of paradoxical hypertension induced by glyceryl trinitrate.

Implications:

Related Experiment Videos

  • The findings suggest that impaired cerebral blood flow autoregulation might be a contributing factor to this rare glyceryl trinitrate-induced hypertension.
  • Further research is warranted to understand the mechanisms behind paradoxical responses to vasodilators.