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Related Concept Videos

Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

Aortic Regurgitation II: Clinical Features and Diagnostic Tests

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 nurse managing a patient with aortic regurgitation begins with a comprehensive assessment, including a review of the patient's medical history, family history, and lifestyle factors. During the cardiac examination, the nurse listens for heart sounds and checks for signs of valve abnormalities. The nurse also observes for symptoms such as dyspnea, orthopnea, and paroxysmal nocturnal dyspnea and assesses the patient's endurance and daily activity tolerance.Based on the findings, the nurse...
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...
Aortic Regurgitation III: Medical Management01:25

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Aortic regurgitation (AR) is when the aortic valve does not close or seal properly, leading to backward blood circulation from the aorta into the left ventricle during diastole. Common causes of AR include rheumatic heart disease, congenital valve defects, and aortic root dilation. Managing AR requires a multifaceted approach to alleviate symptoms, preserve left ventricular function, and address the underlying cause of the regurgitation. Patients with symptomatic AR or significant left...
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Related Experiment Video

Updated: Jul 12, 2026

In vitro Assessment of Aortic Regurgitation Using Four-Dimensional Flow Magnetic Resonance Imaging
11:16

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Published on: February 25, 2022

Aortic regurgitation: assessment with 64-section CT.

Hatem Alkadhi1, Lotus Desbiolles, Lars Husmann

  • 1Institute of Diagnostic Radiology, Clinic for Cardiovascular Surgery, and Cardiovascular Center, University Hospital Zurich, Raemistrasse 100, CH-8091 Zurich, Switzerland. hatem.alkadhi@usz.ch

Radiology
|August 25, 2007
PubMed
Summary

64-section computed tomography (CT) accurately assesses aortic regurgitation (AR) by measuring regurgitant orifice area, showing results comparable to transthoracic echocardiography (TTE). This CT method offers reliable diagnostic accuracy for AR severity.

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Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging

Published on: December 9, 2021

Area of Science:

  • Cardiovascular Imaging
  • Radiology
  • Cardiac Diagnostics

Background:

  • Aortic regurgitation (AR) is a significant valvular heart disease.
  • Accurate assessment of AR severity is crucial for patient management.
  • Transthoracic echocardiography (TTE) is the current standard for AR evaluation.

Purpose of the Study:

  • To prospectively evaluate the diagnostic accuracy of 64-section computed tomography (CT) for assessing aortic regurgitation (AR).
  • To compare CT-derived measurements with transthoracic echocardiography (TTE) as the reference standard.
  • To determine the correlation between CT measurements and AR severity classified by TTE.

Main Methods:

  • Thirty patients with AR underwent both TTE and electrocardiographically gated 64-section CT.
  • CT data were reconstructed to measure the maximum regurgitant orifice area (ROA) in diastole.
  • CT measurements were compared with semiquantitative TTE classification using correlation and ROC analyses.

Main Results:

  • A strong correlation (r=0.84) was found between CT-measured ROA and TTE-based AR severity.
  • CT demonstrated high accuracy in differentiating AR degrees using specific ROA cutoffs (25 mm² and 75 mm²).
  • CT measurements of aortic dimensions and left ventricular parameters correlated well with TTE findings.

Conclusions:

  • 64-section CT provides diagnostic accuracy for assessing aortic regurgitation (AR) that is similar to transthoracic echocardiography (TTE).
  • CT is a valuable tool for evaluating AR severity and associated cardiac dimensions.
  • The findings support the use of 64-section CT in the comprehensive assessment of patients with AR.