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Related Concept Videos

Heart Valves01:16

Heart Valves

12.4K
The human heart is a complex organ with an intricate system of valves that regulate blood flow. There are two main types of valves: atrioventricular (AV) valves and semilunar valves.
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...
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Continuous Renal Replacement Therapy01:30

Continuous Renal Replacement Therapy

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Continuous Renal Replacement Therapy, also known as CRRT, is a procedural treatment for acute kidney injury (AKI) that gradually removes uremic toxins and fluids while maintaining acid-base balance and stabilizing electrolytes. It is particularly useful for hemodynamically unstable patients. Unlike intermittent hemodialysis, which is faster, CRRT provides a gentler approach over 24 hours, closely mimicking the function of natural kidneys. However, CRRT is not ideal for patients with...
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Mitral Valve Prolapse I: Introduction01:27

Mitral Valve Prolapse I: Introduction

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IntroductionThe mitral valve, one of the heart's four valves, regulates blood flow. These valves have flaps that open and close to direct blood properly through the heart and body. During each heartbeat, the flaps open for blood to pass through and seal shut to prevent backflow. Specifically, the mitral valve opens to allow blood flow from the heart's upper left chamber to the lower left chamber. It then closes securely as the lower left chamber contracts to pump blood to the body, preventing...
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Aortic Regurgitation I: Introduction01:15

Aortic Regurgitation I: Introduction

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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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Mitral Valve Prolapse II: Assessment and Management01:22

Mitral Valve Prolapse II: Assessment and Management

671
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...
671
Types of Errors: Detection and Minimization01:12

Types of Errors: Detection and Minimization

11.5K
Error is the deviation of the obtained result from the true, expected value or the estimated central value. Errors are expressed in absolute or relative terms.
Absolute error in a measurement is the numerical difference from the true or central value. Relative error is the ratio between absolute error and the true or central value, expressed as a percentage.
Errors can be classified by source, magnitude, and sign. There are three types of errors: systematic, random, and gross.
Systematic or...
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Related Experiment Video

Updated: Feb 13, 2026

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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Minimally invasive redo-aortic valve replacement.

Nikolaos Bonaros1, Cenk Özpeker, Markus Kofler2

  • 1Department of Cardiac Surgery, Medical University of Innsbruck.

Multimedia Manual of Cardiothoracic Surgery : MMCTS
|February 28, 2018
PubMed
Summary
This summary is machine-generated.

Minimally invasive redo aortic valve replacement using an upper ministernotomy is a safe and effective procedure. This approach addresses bioprosthetic valve degeneration in younger patients, offering a reproducible surgical option.

More Related Videos

Technique and Patient Selection Criteria of Right Anterior Mini-Thoracotomy for Minimal Access Aortic Valve Replacement
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Technique and Patient Selection Criteria of Right Anterior Mini-Thoracotomy for Minimal Access Aortic Valve Replacement

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

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Related Experiment Videos

Last Updated: Feb 13, 2026

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

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

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Area of Science:

  • Cardiovascular Surgery
  • Thoracic Surgery
  • Minimally Invasive Surgery

Background:

  • Bioprosthetic aortic valves are increasingly used, leading to more re-operations due to degeneration, often in younger patients.
  • Minimally invasive techniques are now being applied to redo aortic valve replacement surgeries.

Observation:

  • This tutorial details the operative steps for minimally invasive redo aortic valve replacement via upper ministernotomy.
  • It covers surgical access, cardiopulmonary bypass, venting, and cardioplegia strategies.
  • Special considerations for patent coronary grafts, small aortic annuli, and valve choices are demonstrated.

Findings:

  • Minimally invasive redo aortic valve replacement is demonstrated to be a safe and effective procedure.
  • The technique is shown to be reproducible in practice.
  • Specific challenges encountered in redo operations are addressed within the described approach.

Implications:

  • This approach offers a less invasive option for patients requiring repeat aortic valve surgery.
  • It expands the applicability of minimally invasive cardiac surgery to complex redo procedures.
  • The described techniques may improve patient outcomes and recovery after aortic valve re-operations.