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Related Concept Videos

Aortic Regurgitation I: Introduction01:15

Aortic Regurgitation I: Introduction

429
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...
429

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Related Experiment Video

Updated: Jan 8, 2026

Full-root Aortic Valve Replacement by Stentless Aortic Xenografts in Patients with Small Aortic Roots
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Learning Curve for Aortic Root Replacement.

Omar A Jarral1, Stevan S Pupovac1, Renee Cholyway2

  • 1Northwell Cardiovascular Institute, New York, New York.

Annals of Thoracic Surgery Short Reports
|December 22, 2025
PubMed
Summary
This summary is machine-generated.

Newly graduated surgeons show a learning curve in root procedures, with significant improvement in outcomes after 50 cases. Fellowship programs should ensure trainees complete at least 50 root procedures as first operator.

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Area of Science:

  • Cardiovascular Surgery
  • Surgical Education
  • Medical Device Technology

Background:

  • Assessing the learning curve for new surgeons is crucial for patient safety and procedural efficiency.
  • Root procedures present a complex surgical challenge requiring significant skill development.

Purpose of the Study:

  • To determine the number of root procedures required for a newly graduated surgeon to overcome the learning curve.
  • To analyze operative efficiency and adverse outcomes during the learning phase.

Main Methods:

  • Utilized an institutional database to collect data on root surgeries over a 10-year period.
  • Employed the `strucchange` R package to objectively identify structural changes in operative efficiency.
  • Performed cumulative sum failure analysis and assessed composite adverse outcomes across learning curve phases.

Main Results:

  • The learning curve was segmented into three phases, with significant changes identified after 38 and 148 cases.
  • Adverse outcomes decreased from 44.0% in phase 1 (first ~50 cases) to 20.0% in phase 2 (50-150 cases) and 21.1% in phase 3 (>150 cases).
  • A rapid decline in operative time and complications was observed after the initial 25-50 cases.

Conclusions:

  • The learning curve for root procedures consists of three distinct segments, indicating progressive skill acquisition.
  • Proficiency is notably developed between 50 and 150 cases.
  • Aortic fellowship programs should target a minimum of 50 root procedures as the primary operator for graduating fellows.