title: Predictors of prolonged fluoroscopy time in diagnostic coronary angiography.
abstract: Prolonged fluoroscopy time during coronary angiography is a major concern for interventional cardiologists as well as for patients. It is unknown which factors affect the prolonged fluoroscopy time.
  
  
  
  A total of 458 patients who underwent diagnostic coronary angiography were included. The patients who had the highest decile of fluoroscopy time were assigned to the prolonged fluoroscopy group (fluoroscopy time ≥15.7min), while the other patients were assigned to the non-prolonged fluoroscopy group (fluoroscopy time <15.7min). We performed univariate and multivariate logistic regression analysis to identify the predictors of prolonged fluoroscopy time.
  
  
  
  Mean fluoroscopy time in 458 patients was 8.5±5.8min. Median and ranges of fluoroscopy time were 19.0 [15.7-47.0]min in the prolonged fluoroscopy group and 6.0 [2.0-15.3]min in the non-prolonged fluoroscopy group, respectively. The multivariate logistic regression analysis showed that significant predictors of prolonged fluoroscopy time were prior surgery of ascending aorta replacement [odds ratios (OR) 11.46, 95% confidence intervals (CI) 1.53-85.74, p=0.02] and the prevalence of moderate to severe aortic regurgitation (OR 2.83, 95% CI 1.20-6.66, p=0.02).
  
  
  
  The prior surgery of ascending aorta replacement and moderate to severe aortic regurgitation were significant predictors of the prolonged fluoroscopy time.
authors.affiliation: Division of Cardiovascular Medicine, Saitama Medical Center, Jichi Medical University, Saitama City, Japan.
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Adachi
authors.affiliation: Division of Cardiovascular Medicine, Saitama Medical Center, Jichi Medical University, Saitama City, Japan. Electronic address: ksakakura@jichi.ac.jp.
authors.forename: Kenichi
authors.initials: K
authors.lastname: Sakakura
authors.affiliation: Division of Cardiovascular Medicine, Saitama Medical Center, Jichi Medical University, Saitama City, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Wada
authors.affiliation: Division of Cardiovascular Medicine, Saitama Medical Center, Jichi Medical University, Saitama City, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Funayama
authors.affiliation: Division of Cardiovascular Medicine, Saitama Medical Center, Jichi Medical University, Saitama City, Japan.
authors.forename: Tomio
authors.initials: T
authors.lastname: Umemoto
authors.affiliation: Division of Cardiovascular Medicine, Saitama Medical Center, Jichi Medical University, Saitama City, Japan.
authors.forename: Shin-Ichi
authors.initials: S
authors.lastname: Momomura
authors.affiliation: Division of Cardiovascular Medicine, Saitama Medical Center, Jichi Medical University, Saitama City, Japan.
authors.forename: Hideo
authors.initials: H
authors.lastname: Fujita
mesh_terms: D000368:Aged; D001011:Aorta / Q000601:surgery; D001022:Aortic Valve Insufficiency / Q000150:complications; D017023:Coronary Angiography / Q000379:methods*; D005260:Female; D005471:Fluoroscopy / Q000009:adverse effects / Q000379:methods*; D006321:Heart / Q000000981:diagnostic imaging*; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D016017:Odds Ratio; D012307:Risk Factors; D013997:Time Factors
keywords: Aortic regurgitation; Ascending aorta replacement; Coronary angiography; Echocardiography; Prolonged fluoroscopy time