Cited by 201Radiation Dose and ImagingAtrial Fibrillation Management and OutcomesAdvanced Radiotherapy Techniques

Obesity is a major determinant of radiation dose in patients undergoing pulmonary vein isolation for atrial fibrillation

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Ector, Joris, Dragusin, Octavian, Adriaenssens, Bert, Huybrechts, Wim, Willems, Rik, Ector, Hugo, Heidbüchel, Hein·2007·Journal of the American College of Cardiology

Abstract

Objectives This study sought to evaluate the impact of obesity on patient radiation dose during atrial fibrillation (AF) ablation procedures under fluoroscopic guidance. Background Obesity is a risk factor for AF and its recurrence after ablation. It increases patient radiation dose during fluoroscopic imaging, but this effect has not been quantified for AF ablation procedures. Methods Effective radiation dose and lifetime attributable cancer risk were calculated from dose-area product (DAP) measurements in 85 patients undergoing AF ablation guided by biplane low-frequency pulsed fluoroscopy (3 frames/s). Three dose calculation methods were used (Monte Carlo simulation, dose conversion coefficients, and depth-profile dose curves). Results Median DAP for all patients was 119.6 Gy x cm2 (range 13.9 to 446.3 Gy x cm2) for procedures with a median duration of 4 h and 83 +/- 26 min of fluoroscopy. Body mass index was a more important determinant of DAP than total fluoroscopy time (r = 0.74 vs. 0.37, p < 0.001), with mean DAP values per hour of fluoroscopy of 58 +/- 40 Gy x cm2, 110 +/- 43 Gy x cm2, and 184 +/- 79 Gy x cm2 in normal, overweight, and obese patients, respectively. The corresponding effective radiation doses for AF ablation procedures were 15.2 +/- 7.8 mSv, 26.7 +/- 11.6 mSv, and 39.0 +/- 15.2 mSv, respectively (Monte Carlo). Use of conversion coefficients resulted in higher effective dose estimates than other methods, particularly in obese patients. Mean attributable lifetime risk of all-cancer mortality was 0.060%, 0.100%, and 0.149%, depending on weight class. Conclusions Obese patients receive more than twice the effective radiation dose of normal-weight patients during AF ablation procedures. Obesity needs to be considered in the risk-benefit ratio of AF ablation and should prompt further measures to reduce radiation exposure.

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Crossref · 10.1016/j.jacc.2007.03.040

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Authors
Ector, J., Dragusin, O., Adriaenssens, B., Huybrechts, W., Willems, R., Ector, H., & Heidbüchel, H.
Affiliations
Universitair Ziekenhuis Leuven (BE)
Corresponding author
Ector, Joris
Venue
Journal of the American College of Cardiology
Publisher
Elsevier BV
Published
2007-07
Volume
50
Issue
3
Pages
234-242
ISSN
0735-1097 (ISSN-L)
OpenAlex
W2059492469
Cited by
201
References
42
Citations by year
2026: 6 · 2025: 3 · 2024: 6 · 2023: 3 · 2022: 6 · 2021: 9 · 2020: 15 · 2019: 16 · 2018: 15 · 2017: 20 · 2016: 17 · 2015: 15 · 2014: 10 · 2013: 6 · 2012: 13
FWCI
8.03
Type
journal article
Language
en
Open access
Locations
  • Journal of the American College of Cardiology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Radiation Dose and Imaging
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Atrial Fibrillation Management and Outcomes
  • Physical Sciences › Physics and Astronomy › Radiation › Advanced Radiotherapy Techniques
Keywords
obesity, radiation dose, atrial fibrillation, pulmonary vein isolation, fluoroscopy, effective dose, body mass index, dose-area product, radiation dose reduction, catheter ablation
MeSH terms
Adult, Analysis of Variance, Atrial Fibrillation, Dose-Response Relationship, Radiation, Electrocardiography, Female, Fluoroscopy, Follow-Up Studies, Humans, Male, Middle Aged, Obesity, Probability, Pulmonary Veins, Radiation Dosage, Severity of Illness Index, Cohort Studies, Radiography, Interventional, Body Mass Index, Survival Analysis, Treatment Outcome, Catheter Ablation, Risk Assessment

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