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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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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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Related Experiment Video

Updated: Jan 15, 2026

Manufacturing Abdominal Aorta Hydrogel Tissue-Mimicking Phantoms for Ultrasound Elastography Validation
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The GERAADA Risk Score for Early Mortality After Surgery for Acute Type A Aortic Dissection: An External Validation

Adine R de Keijzer1,2, Emma van der Weijde3, Maximiliaan L Notenboom1

  • 1Department of Cardiothoracic Surgery, Erasmus University Medical Centre, PO Box 2040, 3000 CA Rotterdam, The Netherlands.

Interdisciplinary Cardiovascular and Thoracic Surgery
|January 13, 2026
PubMed
Summary

The GERAADA-score shows moderate accuracy in predicting 30-day surgical mortality for acute type A aortic dissection (ATAAD) in a Dutch population. Refinements, like adding hemodynamic instability, could improve its predictive power.

Keywords:
GERAADA-scoreexternal validationtype A aortic dissection

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Area of Science:

  • Cardiovascular Surgery
  • Thoracic Surgery
  • Aortic Disease Research

Background:

  • Acute type A aortic dissection (ATAAD) presents a high mortality risk, with emergency surgery as the primary treatment.
  • Clinical guidelines recommend the GERAADA-score for predicting 30-day surgical mortality in ATAAD patients.

Purpose of the Study:

  • To externally validate the GERAADA-score's performance in a Dutch cohort of ATAAD patients.
  • To assess the score's accuracy across different malperfusion definitions, age groups, and sexes.
  • To identify independent risk factors for 30-day mortality in ATAAD.

Main Methods:

  • External validation of the GERAADA-score using a multicentre database of 1,146 ATAAD patients undergoing emergency surgery (2007-2024).
  • Evaluation of discrimination (AUC) and calibration (Brier score, Hosmer-Lemeshow test).
  • Subgroup analyses based on sex, age deciles, and malperfusion definitions (imaging vs. clinical).

Main Results:

  • Observed 30-day mortality was 16.9%.
  • The GERAADA-score demonstrated moderate discrimination (AUC 0.649) and good calibration.
  • Malperfusion identified by imaging and age (50-59 years) showed better predictive power; age, catecholamine use, ventilation support, and coronary/peripheral malperfusion were independent risk factors.

Conclusions:

  • The GERAADA-score exhibits moderate discriminative ability and good calibration in the Dutch ATAAD population.
  • Consideration of modifications, such as incorporating a hemodynamic instability variable, may enhance the GERAADA-score's predictive accuracy and reproducibility.