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Related Concept Videos

Aortic Regurgitation I: Introduction01:15

Aortic Regurgitation I: Introduction

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 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 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...
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...
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...
Intestinal Obstruction I: Introduction01:29

Intestinal Obstruction I: Introduction

Intestinal obstruction is a partial or complete blockage of the small or large intestine that disrupts the normal flow of intestinal contents through the lumen. This interruption impairs digestion, absorption, and fluid balance, and may lead to serious complications if not treated promptly.Mechanical ObstructionMechanical obstruction occurs when a physical blockage prevents intestinal contents from passing, arising from within the lumen or the bowel wall, or from external compression.Adhesions,...

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Multimodality Diagnosis of Mesenteric Ischemia
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Bidirectional Circumferential Intimo-Intimal Intussusception in Acute Aortic Dissection.

Emily Rodriguez1, Kelly Ohlrich2, Michael Robich1

  • 1Division of Cardiac Surgery, Johns Hopkins Hospital, Baltimore, Maryland.

Annals of Thoracic Surgery Short Reports
|January 10, 2025
PubMed
Summary
This summary is machine-generated.

Complete circumferential aortic dissection, a rare condition, involves flaps moving in both directions, potentially blocking vital heart and brain blood flow. Prompt diagnosis and surgery are crucial for managing this complex aortic dissection.

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Area of Science:

  • Cardiovascular Surgery
  • Thoracic Surgery
  • Vascular Surgery

Background:

  • Stanford type A aortic dissections are life-threatening conditions requiring prompt diagnosis and management.
  • Complete circumferential aortic dissection with bidirectional intimo-intimal intussusception is an exceptionally rare variant.
  • Understanding the unique hemodynamics and potential complications is critical for patient outcomes.

Observation:

  • This case series describes patients with a rare form of aortic dissection.
  • The dissection involves intimo-intimal intussusception, with flaps moving in both antegrade and retrograde directions.
  • Observed complications include left ventricular outflow tract obstruction, coronary sinus compromise, aortic regurgitation, myocardial ischemia, and neurologic deficits.

Findings:

  • Bidirectional intimo-intimal intussusception in Stanford type A dissections presents a unique challenge.
  • Antegrade flaps can obstruct the left ventricular outflow tract and coronary sinuses.
  • Retrograde flaps pose risks to the aortic arch and its branch vessels.

Implications:

  • Prompt diagnosis using electrocardiography-gated computed tomography is essential.
  • Urgent surgical intervention is indicated for this specific aortic dissection pathology.
  • This condition necessitates a high index of suspicion due to its rarity and potential for severe sequelae.