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Related Concept Videos

Aneurysm I: Introduction01:30

Aneurysm I: Introduction

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...
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...
Aneurysm III: Interprofessional Care01:26

Aneurysm III: Interprofessional Care

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...
Aneurysm II: Clinical Manifestations and Diagnostic Studies01:21

Aneurysm II: Clinical Manifestations and Diagnostic Studies

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...
Blood Transfusion and Agglutination02:45

Blood Transfusion and Agglutination

Blood transfusion is a therapeutic measure to restore the blood volume after extensive blood loss due to an accident or a medical procedure. Blood transfusion involves drawing a certain amount of blood from a suitable donor and infusing it into the recipient.
History
The history of blood transfusion dates back to the 17th century, when early attempts were made in animals. In 1818 James Blundell, a British doctor, performed the first successful human blood transfusion. Later in 1900, Karl...
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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Novel and Innovative Hybrid Technique for Type A Aortic Dissection
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Published on: March 28, 2025

Type A aortic dissection with cold agglutinin disease.

Hiroaki Osada1, Hiroyuki Nakajima, Atsushi Shimizu

  • 1Department of Cardiovascular Surgery, Mitsubishi Kyoto Hospital, Kyoto, Japan. osahiro@kuhp.kyoto-u.ac.jp

The Annals of Thoracic Surgery
|August 2, 2011
PubMed
Summary

Cold agglutinin disease (CAD) patients can safely undergo aortic arch repair. Moderately hypothermic cardiopulmonary bypass and retrograde warm blood cardioplegia are suitable techniques for selected CAD patients.

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Area of Science:

  • Cardiovascular Surgery
  • Hematology
  • Immunology

Background:

  • Cold agglutinin disease (CAD) is a rare autoimmune hemolytic anemia.
  • It is characterized by red blood cell agglutination at low temperatures, posing risks during hypothermic procedures like cardiopulmonary bypass.
  • Managing CAD patients undergoing major cardiovascular surgery requires careful consideration of temperature management and transfusion strategies.

Observation:

  • A 74-year-old ambulatory female patient with CAD presented for aortic arch repair.
  • The patient had a high thermal amplitude for antibody activation, indicating a higher risk of agglutination at warmer temperatures than typically seen in CAD.
  • A type A aortic dissection necessitated surgical intervention.

Findings:

  • The patient underwent aortic arch repair using moderately hypothermic cardiopulmonary bypass.
  • Retrograde warm blood cardioplegia was employed to minimize systemic cooling and reduce the risk of cold agglutinin activation.
  • The surgical procedure was successfully completed without major complications related to CAD.

Implications:

  • This case demonstrates the feasibility and safety of using moderately hypothermic cardiopulmonary bypass with retrograde warm blood cardioplegia in selected patients with cold agglutinin disease undergoing aortic arch repair.
  • These techniques may offer a viable option for managing CAD patients with complex aortic conditions, balancing surgical necessity with the risks of hemolysis.
  • Further investigation into temperature management strategies for CAD patients in cardiac surgery is warranted.