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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,...
Antiasthma Drugs: Inhaled Corticosteroids and Glucocorticoids01:25

Antiasthma Drugs: Inhaled Corticosteroids and Glucocorticoids

Inhaled corticosteroids (ICS) are anti-inflammatory drugs used primarily in treating persistent asthma and providing long-term maintenance. They target the bronchial mucosa, the lining of the airways, to control inflammation, a critical factor in asthma progression and exacerbation.
ICS work through a multifaceted mechanism of action. They suppress the inflammatory response caused by the proliferation of TH cells. They also reduce the transcription of the IL-2 gene, which is involved in the...
Hypertension III: Clinical Manifestations and Diagnostic Studies01:30

Hypertension III: Clinical Manifestations and Diagnostic Studies

Hypertension is asymptomatic and also referred to as the "silent killer" until it progresses to a severe stage or causes target organ disease. Patients may experience symptoms stemming from the strain on blood vessels and tissues in various organs or the heart's increased workload.Physical exams might show no abnormalities other than high blood pressure. Signs of vascular damage, when present, correspond to the organs supplied by the affected vessels, leading to target organ damage. For...
Hypertension IV: Drug Therapy and Lifestyle Modifications01:28

Hypertension IV: Drug Therapy and Lifestyle Modifications

Multiple classes of antihypertensive medications are employed in treating hypertension. The most commonly recommended first-line treatments include:Thiazide Diuretics, such as chlorthalidone, increase sodium and water excretion from the body, reducing blood volume and blood pressure.Angiotensin-converting enzyme inhibitors, like lisinopril, block the conversion of angiotensin I to II, a potent vasoconstrictor lowering blood pressure.Angiotensin II Receptor Blockers (ARBs) prevent angiotensin II...
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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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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,...

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Related Experiment Videos

[Glucocorticoids and hypertension].

C Dodt1, J P Wellhöner, M Schütt

  • 1Präklinik - Interdisziplinäres Notfallzentrum, Städtisches Klinikum München Bogenhausen, Englschalkingerstrasse 77, 81925 München. christoph.dodt@kh-bogenhausen.de

Der Internist
|December 20, 2008
PubMed
Summary
This summary is machine-generated.

Cushing syndrome frequently causes severe hypertension due to excess cortisol. This review explores how cortisol impacts blood pressure regulation, leading to hypertension and related health issues.

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Area of Science:

  • Endocrinology
  • Cardiovascular Medicine
  • Metabolic Disorders

Context:

  • Cushing syndrome is characterized by persistent cortisol excess.
  • Hypertension affects 80% of patients with Cushing syndrome.
  • Cortisol excess contributes to obesity, hyperinsulinemia, and dyslipidemia.

Purpose:

  • To review cortisol-induced changes in blood pressure regulation.
  • To elucidate the mechanisms underlying hypertension in Cushing syndrome.

Summary:

  • Severe arterial hypertension is a key feature of Cushing syndrome.
  • Cortisol excess leads to metabolic disturbances that promote hypertension.
  • Intracellular receptors and enzyme activity influence cortisol's effects on blood pressure.

Impact:

  • Understanding cortisol's role in hypertension is crucial for patient management.
  • This review highlights the complex interplay between hypercortisolism and cardiovascular health.
  • Provides insights into the sequelae of untreated Cushing syndrome.