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Related Concept Videos

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Aneurysm III: Interprofessional Care

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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...
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Vigilant monitoring for aneurysm rupture is essential for patients undergoing aortic surgery.Preoperative Nursing ManagementContinuously monitor the patient for manifestations of aneurysm rupture, such as pallor, weakness, tachycardia, hypotension, abdominal, back, groin, or periumbilical pain, changes in consciousness, and a pulsating abdominal mass. Regularly assess the patient's peripheral pulses.Instruct the patient to consume a clear liquid diet the day before surgery and administer...
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Related Experiment Video

Updated: Aug 10, 2025

A New Murine Model of Endovascular Aortic Aneurysm Repair
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Learning Curve Analysis of Complex Endovascular Aortic Repair.

Britt W C M Warmerdam1, Merieke Stevens2, Carla S P van Rijswijk3

  • 1Department of Surgery, Leiden University Medical Center, RC Leiden, the Netherlands.

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|February 11, 2023
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Summary

This study analyzed the learning curve for complex endovascular aortic repair (EVAR). Improved outcomes like shorter hospital stays and operating times were observed, alongside key qualitative factors for successful technique implementation.

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Area of Science:

  • Vascular Surgery
  • Medical Technology Assessment
  • Surgical Education

Background:

  • Introducing new surgical techniques requires understanding the learning curve.
  • Both quantitative and qualitative factors influence the adoption of new procedures.
  • Complex endovascular aortic repair (EVAR) presents unique challenges in skill acquisition.

Purpose of the Study:

  • To describe the quantitative learning curve of complex EVAR at a non-high-volume academic center.
  • To identify qualitative factors contributing to the successful implementation of new EVAR techniques.
  • To provide insights for future adoption of novel surgical procedures.

Main Methods:

  • Retrospective cohort study of 90 complex EVAR patients (July 2013 - April 2021).
  • Quantitative outcomes: operating time, blood loss, contrast volume, hospital stay, major adverse events (MAE), 30-day mortality, complexity.
  • Qualitative data from 2017 team interviews analyzed for implementation factors.

Main Results:

  • Significant decreases in hospital stay (P=0.008) and operating time (P=0.010) over time.
  • Reduced cardiac complications in the latest patient group (P=0.042).
  • Qualitative factors: communication, trust, shared responsibility, clear hierarchy, mutual learning, and team capabilities.

Conclusions:

  • Quantitative improvements in EVAR outcomes were observed with experience.
  • Mutual learning and shared goals in the operating room are novel, significant factors for implementing new techniques.
  • These findings aid in strategizing the introduction of new surgical technologies.