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Aortic Regurgitation I: Introduction01:15

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IntroductionAortic regurgitation is characterized by the backward flow of blood from the aorta into the left ventricle during diastole and arises from the improper closure of the aortic valve. This condition results in left ventricular volume overload and can stem from both acute and chronic etiologies, each contributing uniquely to the disease's progression and symptomatology.Acute and Chronic CausesAcute aortic regurgitation often results from events that suddenly impair the integrity of the...
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Aneurysm management involves either conservative medical therapy or surgical intervention, depending on the size and symptoms of the aneurysm. Conservative management is generally reserved for smaller, asymptomatic aneurysms, while larger or symptomatic aneurysms often necessitate surgical repair.Conservative Medical TherapyFor small, asymptomatic aneurysms, particularly abdominal aortic aneurysms (AAA) less than 5.5 centimeters in diameter, conservative medical therapy is recommended. This...
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Diabetic Retinopathy01:27

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DefinitionDiabetic retinopathy is a microvascular complication of diabetes affecting the retinal blood vessels.Risk FactorsDiabetic retinopathy is present in almost all individuals with type 1 diabetes and more than 60% of those with type 2 diabetes after two decades of disease.The risk increases with poor glycemic control, hypertension, dyslipidemia, smoking, pregnancy, and puberty.Although cataracts and glaucoma are also more frequent in people with diabetes, retinopathy remains the leading...
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Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

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Aortic valve regurgitation (AR) occurs when the aortic valve fails to close properly, allowing blood to flow backward from the aorta into the left ventricle. This backflow can result in two distinct clinical presentations: acute and chronic AR, each characterized by its own set of symptoms and physical findings.Acute Aortic RegurgitationAcute AR presents with a sudden onset of severe symptoms. Patients typically experience profound dyspnea (shortness of breath), chest pain, and signs of left...
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A transient ischemic attack (TIA) is a brief episode of neurological dysfunction caused by a temporary, focal reduction in cerebral blood flow. Although symptoms resemble those of an ischemic stroke, the interruption in perfusion is short-lived and does not cause permanent infarction. TIAs are clinically important because they often serve as early warning events for future stroke.Mechanisms of Transient Cerebral IschemiaTransient cerebral ischemia may arise through several mechanisms. One...
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Related Experiment Video

Updated: Apr 26, 2026

Oxygen-Induced Retinopathy Model for Ischemic Retinal Diseases in Rodents
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Transient retinopathy in acute aortic dissection.

Kenshiro Arao1, Asuka Kuribara2, Hiroyuki Jinnouchi1

  • 1Division of Cardiovascular Medicine, Saitama Medical Center, Jichi Medical University, Saitama, Japan.

Ophthalmology
|August 7, 2014
PubMed
Summary

Transient retinopathy is common in acute aortic dissection (AAD) and predicts adverse outcomes. This eye condition, often seen with hypertension, signals higher risks for cardiovascular and cerebrovascular events in AAD patients.

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Area of Science:

  • Ophthalmology
  • Cardiovascular Medicine
  • Vascular Surgery

Background:

  • Acute aortic dissection (AAD) is a life-threatening condition.
  • Ocular manifestations in AAD are not well-characterized.
  • Understanding transient retinopathy in AAD is crucial for risk stratification.

Purpose of the Study:

  • To investigate the occurrence of transient retinopathy in patients with Stanford type B AAD.
  • To determine the prognostic significance of retinopathy in predicting adverse cardio-cerebrovascular events.

Main Methods:

  • Prospective observational study of 64 patients with Stanford type B AAD.
  • Fundus photography to detect retinopathy (cotton-wool spots, hemorrhage).
  • Analysis of association between retinopathy and subsequent cardio-cerebrovascular events.

Main Results:

  • Retinopathy detected in 55% of patients; findings were transient.
  • Hypertension history and elevated C-reactive protein levels associated with retinopathy.
  • Retinopathy significantly predicted more frequent adverse cardio-cerebrovascular events (P=0.045).

Conclusions:

  • Transient retinopathy is frequent in AAD patients.
  • Retinopathy is linked to hypertension and elevated CRP.
  • Retinopathy serves as an important predictor of adverse cardio-cerebrovascular outcomes in AAD.