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Related Concept Videos

Hypertension and Regulation of Blood Pressure01:18

Hypertension and Regulation of Blood Pressure

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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...
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Hypertension I: Introduction01:28

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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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Hypertension III: Clinical Manifestations and Diagnostic Studies01:30

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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...
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Hypertension II: Pathophysiology01:29

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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,...
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Glaucoma: Overview01:25

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Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
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Alterations in Blood Pressure01:30

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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.
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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...
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Related Experiment Video

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A Laser-induced Mouse Model of Chronic Ocular Hypertension to Characterize Visual Defects
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Hypertension and the eye.

Lazaros Konstantinidis1, Yan Guex-Crosier

  • 1Jules-Gonin Eye Hospital, FAA, University of Lausanne, Switzerland.

Current Opinion in Ophthalmology
|September 24, 2016
PubMed
Summary
This summary is machine-generated.

Hypertension`s effects on eye`s blood vessels, detected through advanced retinal imaging, can predict cardiovascular disease risk. These findings aid in managing hypertension and preventing end-organ damage.

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Translaminar Autonomous System Model for the Modulation of Intraocular and Intracranial Pressure in Human Donor Posterior Segments
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Area of Science:

  • Ophthalmology
  • Cardiology
  • Public Health

Background:

  • Hypertension is a leading global cause of cardiovascular disease and mortality.
  • Ocular microvasculature changes reflect systemic hypertensive risks.
  • The retina offers direct visualization of microvascular alterations.

Purpose of the Study:

  • To review recent advancements in detecting and understanding hypertension-related eye signs.
  • To highlight the significance of ocular findings in hypertension management.

Main Methods:

  • Review of current literature on retinal imaging and computer analysis.
  • Inclusion of recent epidemiological and genetic studies.
  • Focus on objective assessment of retinal vascular features.

Main Results:

  • Retinal microvascular changes can precede systemic disease progression.
  • Advanced imaging quantifies retinal vascular caliber, length-to-diameter ratio, and wall-to-lumen ratio.
  • Genetic studies link chromosomal loci to hypertensive retinopathy.

Conclusions:

  • Hypertensive retinopathy signs provide prognostic information on end-organ damage risk.
  • Ocular assessment can guide urgent systemic management and preventive therapies.
  • Improved retinal imaging and analysis tools will enhance hypertension diagnosis and management.