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FACTORS INFLUENCING FLUOROSCOPY TIME IN ENDOVASCULAR TREATMENT OF ABDOMINAL ANEURYSMS: A RETROSPECTIVE STUDY.

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Fluoroscopy time during endovascular aortic aneurysm repair (EVAR) is influenced by graft type, patient factors like hypertension and dyslipidemia, and procedure duration. Optimizing these can reduce radiation exposure for patients undergoing EVAR.

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Area of Science:

  • Vascular Surgery
  • Interventional Radiology
  • Medical Physics

Background:

  • Endovascular aortic aneurysm repair (EVAR) is a common procedure for abdominal aortic aneurysms.
  • Prolonged radiation exposure during EVAR is a concern for patient safety.
  • Factors influencing fluoroscopy time (FT) during EVAR require further investigation.

Purpose of the Study:

  • To document fluoroscopy time (FT) during endovascular aortic aneurysm repair (EVAR).
  • To identify patient-related, clinical, and technical factors influencing FT during EVAR.
  • To inform radiation protection strategies in EVAR procedures.

Main Methods:

  • Retrospective analysis of 180 patients undergoing EVAR for abdominal infrarenal aortic aneurysms over 7 years.
  • Evaluation of fluoroscopy time (FT) in relation to risk factors, comorbidities, graft type, and procedure parameters.
  • Statistical analysis including linear and logistic regression to identify predictors of FT.

Main Results:

  • Median FT was 1011 seconds. Excluder and C3 Excluder grafts were associated with lower FT.
  • Hypertension, dyslipidemia, age ≥ 70, aneurysm diameter ≥ 6 cm, and procedure duration ≥ 2 hours correlated with higher FT.
  • Procedure duration, dyslipidemia, and graft type were independent predictors of FT exceeding the median.

Conclusions:

  • Graft type, patient comorbidities, and procedure duration are significant factors affecting fluoroscopy time in EVAR.
  • Understanding these factors is crucial for radiation protection without compromising EVAR efficacy.
  • Further research is needed to identify additional factors influencing procedure complexity and radiation dose.