Key result
Higher procedural complexity is linked to ~153% longer fluoroscopy time than simple procedures.
Why the study?
Few data are available on the quantitative assessment of complexity in PTCA procedures, especially in relation to patient radiation exposure.
Do clinical, anatomic, and technical factors influence fluoroscopy time and radiation exposure during PTCA procedures?
Observational (n=402)
Do clinical, anatomic, and technical factors influence fluoroscopy time and radiation exposure during PTCA procedures?
Anatomic and technical factors, rather than clinical factors, are the primary determinants of fluoroscopy time and radiation exposure during PTCA.
Answers are grounded in this paper and cite their sources.
Supports radiation vigilance in complex PTCA; hypothesis-generating for modifiable factors to limit exposure.
Few data are available on the quantitative assessment of complexity (C), especially in relation to a patient's exposure to radiation. The relationship between several clinical (CFs), anatomic (AFs), and technical factors (TFs) versus fluoroscopy time (FT) was evaluated in 402 random percutaneous transluminal coronary angioplasty (PTCA) procedures. CFs were age, sex, single or multivessel disease, ejection fraction, and previous coronary artery bypass graft. AFs were assessed based on the American Heart Association / American College of Cardiology classification. TFs were multivessel PTCA, use of the double wire or double balloon technique, stenting, ostial stenting, bifurcation stenting, and intravascular ultrasonography. No CFs significantly influenced FT, whereas all AFs and TFs (except multivessel PTCA) did significantly influence FT. A scoring system was developed, and two complexity indexes (CI) were conceived, based on which the procedures were divided into three groups: simple, medium, and complex. The mean FTs were 471+/-289, 805+/-532, and 1,190+/-641 (P <0.0001), respectively. Total cine frame recordings were 1,119+/-572, 1,265+/-644 (P = 0.0355), and 1,418+/-785 (P<0.0001 vs. simple; P = NS vs. medium). The dose/area product measurement was 65.8+/-41.4, 93 +/-58.5 (P<0.0001), and 116.7+/-72.8 (P<0.0001 vs. simple; P = 0.00159 vs. medium), respectively. In our series, CI was directly related to AF and TF, but not to CF. Comparison of PTCA procedures and definition of appropriate FT should consider CIs.
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Bernardi et al. (2000) conducted an observational in Percutaneous transluminal coronary angioplasty (PTCA) (n=402). Anatomic and technical complexity vs. Simple complexity procedures was evaluated on Fluoroscopy time (p=<0.0001). Higher procedural complexity, driven by anatomic and technical factors, significantly increased mean fluoroscopy time from 471 in simple to 1,190 in complex procedures (P<0.0001).
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