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Related Concept Videos

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)...
Blood Pressure Imbalances and Circulatory Shock01:24

Blood Pressure Imbalances and Circulatory Shock

Disorders affecting blood volume, vascular tone, or vascular function can disrupt vascular homeostasis, including conditions like hypertension, hemorrhage, and shock.
Blood Pressure: Hypertension and Hypotension
Normal blood pressure is 120/80 mm Hg. Elevated blood pressure is 120-129/under 80 mm Hg. Hypertension, warranting treatment at 130/80 mm Hg, is often asymptomatic and can lead to severe cardiovascular events, aneurysms, peripheral arterial disease, chronic renal disease, or cardiac...
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 Regulation of Blood Pressure01:17

Hormonal Regulation of Blood Pressure

Endocrinal or hormonal intervention in the cardiovascular system is predominantly exerted by the catecholamines - epinephrine and norepinephrine, as well as a slew of hormones that interact with renal function to modulate blood volume.
Epinephrine and Norepinephrine
The adrenal medulla releases epinephrine and norepinephrine, catecholamines that enhance and extend the sympathetic or "fight or flight" physiological response. These hormones escalate heart rate and the force of contraction while...
Hypothyroidism II: Pathophysiology01:23

Hypothyroidism II: Pathophysiology

Hypothyroidism is a disorder characterized by insufficient production of thyroid hormones, which regulate metabolism, energy balance, and multiple organ systems.TypesHypothyroidism is classified based on the level of dysfunction. Primary hypothyroidism results from intrinsic thyroid gland dysfunction, causing reduced hormone production despite normal or increased stimulation. Secondary hypothyroidism arises from inadequate thyroid-stimulating hormone (TSH) secretion by the pituitary. Tertiary...
Diabetes Insipidus II: Pathophysiology01:22

Diabetes Insipidus II: Pathophysiology

Normally, water balance is maintained through three interconnected mechanisms: the hypothalamic thirst center, the synthesis and release of antidiuretic hormone (ADH, or vasopressin), and the kidneys' responsiveness to this hormone. ADH is synthesized in the hypothalamus, released from the posterior pituitary, and acts on the distal nephron, allowing water reabsorption and concentrated urine production.Diabetes Insipidus and Its TypesIn diabetes insipidus (DI), this regulatory system is...

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Related Experiment Video

Updated: May 18, 2026

Echocardiographic Assessment Using Subxiphoid-Only Examination for Hypotensive Patients
08:45

Echocardiographic Assessment Using Subxiphoid-Only Examination for Hypotensive Patients

Published on: April 18, 2025

[Hypotension from endocrine origin].

Marie-Christine Vantyghem1, Claire Douillard, Anne-Sophie Balavoine

  • 1Centre hospitalier régional universitaire de Lille, hôpital Huriez, service d'endocrinologie et maladies métaboliques, 59000 Lille, France. mc-vantyghem@chru-lille.fr

Presse Medicale (Paris, France : 1983)
|September 15, 2012
PubMed
Summary
This summary is machine-generated.

Hypotension, or low blood pressure, can stem from various endocrine issues like adrenal failure or aldosterone problems. Accurate diagnosis is key to effectively treating this condition without causing high blood pressure.

Related Experiment Videos

Last Updated: May 18, 2026

Echocardiographic Assessment Using Subxiphoid-Only Examination for Hypotensive Patients
08:45

Echocardiographic Assessment Using Subxiphoid-Only Examination for Hypotensive Patients

Published on: April 18, 2025

Area of Science:

  • Endocrinology
  • Internal Medicine
  • Cardiology

Context:

  • Hypotension, characterized by low blood pressure, lacks a defined threshold and can be permanent or postural (orthostatic hypotension).
  • Acute hypotensive events warrant investigation for shock, adrenal failure, or iatrogenic causes.
  • Chronic hypotension often has endocrine origins, including adrenal insufficiency, hypoaldosteronism, and diabetic dysautonomia.

Purpose:

  • To explore the diverse endocrine etiologies of hypotension.
  • To differentiate between primary and secondary hypoaldosteronism and their associated conditions.
  • To highlight rare but critical causes like pheochromocytoma and carcinoid syndrome.

Summary:

  • Endocrine hypotension encompasses adrenal failure (primary/central), hypoaldosteronism (isolated or with glucocorticoid deficiency), and pseudohypoaldosteronism.
  • Hypoaldosteronism presents with low sodium and high potassium, linked to conditions like diabetes, kidney failure, and HIV.
  • Other causes include pheochromocytomas and carcinoid syndrome, requiring specific diagnostic and management approaches.

Impact:

  • Accurate etiological diagnosis is crucial for effective treatment of endocrine hypotension.
  • Understanding these causes helps prevent iatrogenic complications, such as inducing hypertension.
  • This knowledge aids clinicians in managing complex cases of low blood pressure with endocrine origins.