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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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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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An aortic aneurysm is a localized outpouching or dilation at a weak point in the artery wall. It may involve different parts of the aorta, such as the abdominal aorta, aortic arch, or thoracic aorta.Etiological factorsSeveral disorders are associated with aortic aneurysms.Congenital causes, such as primary connective tissue disorders like Marfan syndrome, impact the integrity and strength of connective tissues, notably affecting the aorta. Marfan syndrome is a genetic disorder that specifically...
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Aneurysm II: Clinical Manifestations and Diagnostic Studies01:21

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Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
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Aneurysm III: Interprofessional Care01:26

Aneurysm III: Interprofessional Care

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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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Vigilant monitoring for aneurysm rupture is essential for patients undergoing aortic surgery.Preoperative Nursing ManagementContinuously monitor the patient for manifestations of aneurysm rupture, such as pallor, weakness, tachycardia, hypotension, abdominal, back, groin, or periumbilical pain, changes in consciousness, and a pulsating abdominal mass. Regularly assess the patient's peripheral pulses.Instruct the patient to consume a clear liquid diet the day before surgery and administer...
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Updated: May 5, 2026

Manufacturing Abdominal Aorta Hydrogel Tissue-Mimicking Phantoms for Ultrasound Elastography Validation
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Acute Aortic Dissection: Observational Lessons Learned From 11 000 Patients.

Eduardo Bossone1, Kim A Eagle2, Christoph A Nienaber3

  • 1Department of Public Health, University of Naples Federico II, Italy (E.B.).

Circulation. Cardiovascular Quality and Outcomes
|August 15, 2024
PubMed
Summary
This summary is machine-generated.

Improvements in acute aortic dissection (AAD) care over 25 years increased survival for type A AAD patients with surgery. Thoracic endovascular aortic repair advanced type B AAD treatment, reducing in-hospital deaths, though 3-year survival remained consistent.

Keywords:
aortic dissectionendovascular aneurysm repairhospital mortalityhypertensionsmoking

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Novel and Innovative Hybrid Technique for Type A Aortic Dissection
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Area of Science:

  • Cardiovascular Medicine
  • Surgical Innovation
  • Clinical Outcomes Research

Background:

  • Acute aortic dissection (AAD) diagnosis and treatment have undergone significant evolution over the past 25 years.
  • Understanding the impact of these changes on patient outcomes is crucial for refining clinical practice.

Purpose of the Study:

  • To evaluate the effects of evolving diagnostic and therapeutic strategies on in-hospital and 3-year mortality in patients with nontraumatic acute aortic dissection.
  • To analyze temporal trends in AAD management and associated survival rates.

Main Methods:

  • Analysis of data from the International Registry of Acute Aortic Dissection (1996-2022) involving 61 centers across 15 countries.
  • Patients were stratified into time-based tertiles to assess changes in diagnostics, therapy, and mortality.
  • Statistical tests including Cochran-Armitage trend and Jonckheere-Terpstra were used to identify temporal trends.

Main Results:

  • For type A AAD, increased surgical repair rates correlated with decreased in-hospital mortality (24.1% to 16.7%), while 3-year survival showed no significant change.
  • For type B AAD, thoracic endovascular aortic repair (TEVAR) use increased, replacing open surgery, and was associated with reduced in-hospital mortality (9.9% to 6.2%).
  • Hypertension rates increased, while smoking and atherosclerosis decreased over the study period. 3-year survival for type B AAD remained consistent.

Conclusions:

  • A more aggressive surgical approach for type A AAD has led to substantial improvements in in-hospital survival.
  • Thoracic endovascular aortic repair has become a preferred treatment for complicated type B AAD, decreasing in-hospital mortality.
  • Despite advances in acute care, 3-year post-discharge survival for AAD patients has not significantly improved over the past 25 years.