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Related Concept Videos

Aortic Regurgitation III: Medical Management01:25

Aortic Regurgitation III: Medical Management

Aortic regurgitation (AR) is when the aortic valve does not close or seal properly, leading to backward blood circulation from the aorta into the left ventricle during diastole. Common causes of AR include rheumatic heart disease, congenital valve defects, and aortic root dilation. Managing AR requires a multifaceted approach to alleviate symptoms, preserve left ventricular function, and address the underlying cause of the regurgitation. Patients with symptomatic AR or significant left...
Mitral Stenosis III: Medical Management01:26

Mitral Stenosis III: Medical Management

Mitral stenosis, a condition marked by the narrowing of the mitral valve, necessitates an integrated approach for effective management. This approach includes preventative measures, medical therapy, and surgical interventions to reduce symptoms and prevent complications.PreventionPrevention of mitral stenosis primarily focuses on reducing the incidence of bacterial infections, particularly streptococcal infections, which can lead to rheumatic fever and subsequent valvular damage. Timely...
Mitral Stenosis IV: Nursing Management01:27

Mitral Stenosis IV: Nursing Management

A comprehensive nursing assessment is essential for patients with valvular heart disease, which involves any dysfunction of the heart valves that could impact blood flow and overall heart function.Subjective Data Collection:Chief Complaint and Present Illness: Start with the patient's primary concerns, focusing on the onset, duration, and progression of cardiac symptoms such as dyspnea, fatigue, chest pain, and palpitations.Past Medical History: Collect detailed information on any previous...
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 IV: Nursing Management01:17

Aortic Regurgitation IV: Nursing Management

A nurse managing a patient with aortic regurgitation begins with a comprehensive assessment, including a review of the patient's medical history, family history, and lifestyle factors. During the cardiac examination, the nurse listens for heart sounds and checks for signs of valve abnormalities. The nurse also observes for symptoms such as dyspnea, orthopnea, and paroxysmal nocturnal dyspnea and assesses the patient's endurance and daily activity tolerance.Based on the findings, the nurse...
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...

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Related Experiment Video

Updated: Jun 18, 2026

Full-root Aortic Valve Replacement by Stentless Aortic Xenografts in Patients with Small Aortic Roots
12:17

Full-root Aortic Valve Replacement by Stentless Aortic Xenografts in Patients with Small Aortic Roots

Published on: May 21, 2017

Which patients benefit from stentless aortic valve replacement?

Helmut Gulbins1, Hermann Reichenspurner

  • 1Department of Cardiovascular Surgery, University Heart Center, University Hospital Eppendorf, Hamburg, Germany. h.gulbins@uke.de

The Annals of Thoracic Surgery
|November 26, 2009
PubMed
Summary

Stentless aortic bioprostheses show advantages for specific patients, like those with impaired heart function or small aortic annuli. However, overall benefits and long-term durability compared to stented valves remain mixed.

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Standardized Technique of Aortic Valve Re-implantation for Valve-sparing Aortic Root Replacement
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Standardized Technique of Aortic Valve Re-implantation for Valve-sparing Aortic Root Replacement

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Published on: May 21, 2017

Technique and Patient Selection Criteria of Right Anterior Mini-Thoracotomy for Minimal Access Aortic Valve Replacement
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Standardized Technique of Aortic Valve Re-implantation for Valve-sparing Aortic Root Replacement
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Standardized Technique of Aortic Valve Re-implantation for Valve-sparing Aortic Root Replacement

Published on: December 11, 2017

Area of Science:

  • Cardiovascular Surgery
  • Biomedical Engineering
  • Prosthetic Valve Research

Background:

  • Stented aortic bioprostheses are widely used, but questions remain about the advantages of stentless alternatives.
  • Understanding patient-specific benefits and long-term outcomes of stentless valves is crucial for surgical decision-making.

Purpose of the Study:

  • To compare the advantages of stentless aortic bioprostheses versus stented bioprostheses.
  • To identify patient subgroups who may benefit from stentless valve implantation.

Main Methods:

  • Literature review of studies comparing stented and stentless aortic prostheses.
  • Searched PubMed and MEDLINE databases using keywords: stentless aortic prostheses, stented aortic prosthesis, hemodynamic performance, degeneration, durability, technique, long-term follow-up.
  • Focused analysis on stentless prostheses with over 5 years of clinical experience.

Main Results:

  • Stentless prostheses demonstrated advantages in patients with severe left ventricular dysfunction or small aortic annuli (grade II).
  • No significant advantages were identified for the majority of patients.
  • Durability data were mixed; the Toronto SPV showed increased degeneration after 10 years, while Freestyle porcine stentless prostheses maintained excellent results.

Conclusions:

  • Stentless aortic bioprostheses offer benefits for select patient populations but not universally.
  • Long-term durability varies between different types of stentless valves, necessitating careful consideration of specific device performance.
  • Further research, particularly randomized trials, is needed to clarify the comparative benefits and long-term outcomes.