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Related Concept Videos

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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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Novel and Innovative Hybrid Technique for Type A Aortic Dissection
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Type A aortic dissection: optimal annual case volume for surgery.

Michal J Kawczynski1,2, Sander M J van Kuijk3, Jules R Olsthoorn1,4

  • 1Department of Cardiothoracic Surgery, Maastricht University Medical Center (MUMC+), P. Debyelaan 25, 6629HX Maastricht, Limburg, The Netherlands.

European Heart Journal
|August 28, 2023
PubMed
Summary
This summary is machine-generated.

A new meta-analysis method identified 38 annual cases as the optimal volume for acute type A aortic dissection (ATAAD) surgery. Centralizing care to high-volume hospitals improves patient survival and outcomes.

Keywords:
Acute type A aortic dissectionAnnual case volumeCardiovascular interventionsHospital volumeOptimal case volumeVolume–outcome relationship

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Area of Science:

  • Cardiovascular Surgery
  • Health Services Research
  • Meta-Analysis

Background:

  • Volume-outcome relationships are crucial for centralizing complex cardiovascular procedures.
  • Determining optimal hospital case volume thresholds is essential for improving patient outcomes.
  • Acute type A aortic dissection (ATAAD) surgery is a critical procedure where centralization may enhance care.

Purpose of the Study:

  • To introduce a novel meta-analytical approach for determining optimal hospital case volume thresholds.
  • To apply this method to ATAAD surgery to identify an optimal annual case volume.
  • To assess the impact of hospital volume on early and long-term mortality for ATAAD.

Main Methods:

  • A systematic literature search was conducted across three databases (2012-2023).
  • A novel volume-outcome meta-analytical approach using restricted cubic splines and the elbow method was employed.
  • Early mortality, long-term survival, and numbers needed to treat (NNTs) were analyzed in relation to annual hospital case volume quartiles.

Main Results:

  • 140 studies with 38,276 patients were included, showing a significant non-linear volume-outcome effect (P < .001).
  • The optimal annual case volume threshold for ATAAD surgery was determined to be 38 cases/year (95% CI 37-40).
  • Higher volume centers (Q4) had significantly lower early mortality (10.3%) vs. low-volume centers (Q1) (16.2%), and improved 10-year survival (69% vs. 51%).

Conclusions:

  • A novel meta-analytical method statistically determined the optimal hospital case volume threshold for cardiovascular interventions.
  • Centralizing ATAAD care to high-volume centers (≥38 cases/year) is associated with improved patient outcomes and survival.
  • This volume-outcome determination methodology can be extended to other cardiovascular procedures requiring centralization.