Related Experiment Video
Updated: Dec 17, 2025
06:56
Author Spotlight: Advancing Cardiac Procedure Testing Prior to Embarking on Large Animal Studies
Published on: August 25, 2023
1.4K
Modified Danielson Technique for Prosthetic Aortic Valve Endocarditis and Aortoventricular Discontinuity
Gianfranco Filippone1, Claudia Calia1, Mario Finazzo2
1Division of Cardiac Surgery, University of Palermo, 90127 Palermo, Italy.
Texas Heart Institute Journal
|July 1, 2020
Summary
Prosthetic valve endocarditis can destroy aortic tissue, complicating replacement. A modified Danielson technique offers a safer solution for aortic valve replacement, addressing aortoventricular discontinuity and reducing bypass graft risks.
Area of Science:
- Cardiovascular Surgery
- Infectious Diseases
- Biomaterials Science
Background:
- Prosthetic aortic valve endocarditis is a severe complication.
- Infection can destroy the aortic annulus, leading to aortoventricular discontinuity.
- Conventional valve replacement becomes challenging or impossible.
Observation:
- A modified Danielson technique was used in a 68-year-old patient.
- The patient had advanced prosthetic valve endocarditis with aortic annulus destruction.
- Aortoventricular discontinuity was present.
Findings:
- The modified Danielson technique allows for more secure valve anchoring.
- This approach reduces risks associated with bypass grafts.
- It effectively treats aortoventricular discontinuity.
Implications:
- This modified technique provides a safer alternative for complex aortic valve replacement cases.
- It addresses critical complications like annulus destruction and aortoventricular discontinuity.
- Further research may validate this approach for similar challenging scenarios.
Related Concept Videos
01:22Aortic Regurgitation II: Clinical Features and Diagnostic Tests
269
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...
269
01:25Endocarditis I: Introduction
282
Introduction:Endocarditis is the infection of the endocardium, the inner lining of the heart and its valves. When the heart muscle is involved, the condition is termed myocarditis, while an infection of the outer lining is called pericarditis. Infective endocarditis (IE) primarily affects the endocardium, where pathogens adhere to the valves or lining, forming vegetation that can lead to severe complications. Infective endocarditis occurs when microorganisms, usually bacteria from other body...
282
01:18Endocarditis III: Medical Management
139
Infective endocarditis management involves a multifaceted approach encompassing infection prevention, lifestyle modifications, pharmacological therapy, and surgical management.Infection Prevention:Hand Hygiene: Thorough handwashing is crucial to prevent the spread of infection. Hand hygiene should be performed regularly, especially before and after using the restroom.Oral Hygiene: Good oral hygiene is essential. It includes brushing teeth immediately after waking up and before bed, flossing...
139
01:15Aortic Regurgitation I: Introduction
307
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...
307
01:22Mitral Valve Prolapse II: Assessment and Management
249
IntroductionA range of clinical features characterizes Mitral Valve Prolapse (MVP), but it is important to note that many individuals with MVP are asymptomatic and may remain so throughout their lives. For those who do exhibit symptoms, the following are the key clinical features:Palpitations: This is a common symptom where individuals feel an irregular or rapid heartbeat. Palpitations in MVP are often due to arrhythmias such as premature ventricular contractions or supraventricular...
249
01:22Mitral Stenosis I: Introduction
239
Mitral Valve Stenosis (MVS) is a heart condition where the mitral valve narrows, impeding blood circulation from the left atrium to the left ventricle. The etiology and pathophysiology of this condition are multifaceted, leading to a cascade of cardiovascular complications.Causes of Mitral Valve StenosisRheumatic Heart Disease: It is the main cause of mitral valve stenosis, particularly in developing nations. This condition arises from rheumatic fever, an inflammatory illness resulting from...
239