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Related Concept Videos

Antihypertensive Drugs: Potassium-Sparing Diuretics01:28

Antihypertensive Drugs: Potassium-Sparing Diuretics

Liddle syndrome is a genetically inherited form of hypertension characterized by the overactivity of epithelial sodium channels in the nephron, the functional unit of the kidney. This heightened activity leads to increased sodium reabsorption and excessive excretion of potassium. To counteract this, potassium-sparing diuretics such as amiloride are used. They function by blocking these sodium channels, thereby reducing the influx of sodium into the epithelial cells and minimizing the loss of...
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,...
Hormonal Regulation01:33

Hormonal Regulation

The renin-aldosterone system is an endocrine system which guides the renal absorption of water and electrolytes, thus managing blood pressure and osmoregulation. Activation of the system begins in the kidneys with a small cluster of cells adjacent to the afferent and efferent blood vessels of the renal corpuscle. As the nephrons are filtering blood, juxtaglomerular cells monitor blood pressure. If they detect a decrease in pressure, they release the hormone renin into the bloodstream.
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...
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,...
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...

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Updated: Jun 29, 2026

A Novel Method: Super-selective Adrenal Venous Sampling
06:08

A Novel Method: Super-selective Adrenal Venous Sampling

Published on: September 15, 2017

[Primary hyperaldosteronism in hypertension].

Xavier Girerd1

  • 1Service d'endocrinologie métabolisme, Unite de prevention cardiovasculaire, Groupe hospitalier Pitié-Salpêtrière, 47-83, boulevard de l'Hôpital, 75651 Paris 13, France.

Revue Medicale Suisse
|October 14, 2008
PubMed
Summary

Primary aldosteronism affects 10% of primary care hypertension patients and is more common in those with uncontrolled blood pressure. Early diagnosis and treatment are crucial for reducing cardiovascular risks associated with this condition.

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Isolation and Adoptive Transfer of High Salt Treated Antigen-presenting Dendritic Cells

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Last Updated: Jun 29, 2026

A Novel Method: Super-selective Adrenal Venous Sampling
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Published on: September 15, 2017

Isolation and Adoptive Transfer of High Salt Treated Antigen-presenting Dendritic Cells
09:29

Isolation and Adoptive Transfer of High Salt Treated Antigen-presenting Dendritic Cells

Published on: March 5, 2019

Area of Science:

  • Endocrinology
  • Cardiology
  • Hypertension Research

Context:

  • Primary aldosteronism is increasingly recognized in hypertensive populations.
  • It affects approximately 10% of patients in primary care and up to 20% of those with uncontrolled hypertension.
  • Patients with primary aldosteronism face higher cardiovascular complication risks compared to hypertensive individuals with similar blood pressure levels.

Purpose:

  • To highlight the prevalence and diagnostic approaches for primary aldosteronism.
  • To emphasize the increased cardiovascular risks associated with primary aldosteronism.
  • To outline current diagnostic strategies involving hormonal and radiological investigations.

Summary:

  • Primary aldosteronism is prevalent in hypertensive patients, particularly those with resistant or uncontrolled blood pressure.
  • Diagnosis involves assessing the renin-aldosterone system (plasma renin activity, aldosterone levels) and utilizing radiological imaging.
  • Current diagnostic pathways suggest initiating with imaging (scanner) followed by hormonal assessments for suspected secondary hypertension.

Impact:

  • Increased awareness of primary aldosteronism's prevalence and associated cardiovascular risks.
  • Improved diagnostic strategies for identifying primary aldosteronism early.
  • Potential for earlier intervention and better management of hypertension and its complications.