Page 60 - Journal of Structural Heart Disease Volume 2, Issue 6

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Meeting Abstracts
#0112
3.75 FRAMES PER SECOND (FPS) VERSUS 15 FPS FLUOROSCOPY FOR RADIATION DOSE REDUCTION DURING TRANSCATHETER ATRIAL SEPTAL DEFECT CLOSURE
Ibrahim Cansaran Tanidir1, Selman Gokalp1,
Mehmet Akin Topkarci2, Erkut Ozturk1, Alper Guzeltas1 1Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Center Department of Pediatric Cardiology, Istanbul, Turkey
2Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Center Department of Pediatric Anesthesia, Istanbul, Turkey
Objective: Cardiac catheterization remains as a major source of radiation exposure for patients with congenital heart disease. As children are more prone to both deterministic and stochastic e ect of radiation, every e ort should be tried to reduce radiation exposure. One of the ways to reduce the radiation dose is to use lower pulse uoroscopy rates. This study reports the magnitude of radiation exposure with 3.75 fps pulse uoroscopy rate and compares the reduction with our previous 15fps protocol during transcathater atrial septal defect (ASD) closure.
Methods: Radiation doses during successful ASD device closure procedures performed between January 2015 and September 2016 (Group–1, using 3.75 fps uoro rate) were compared with ASD device closure procedures performed from January 2012 to December 2014 period (Group-2, using 15 fps uoro rate). In Group-1 15fps was used only for cine uoroscopy before the device deployment for better angiographic evaluation. Radiation dose was quanti ed as air kerma dose (mGy) and dose area product (DAP; μGy/m2).
Results: There were 70 patients in either group. Baseline demographic characteristics, weight and height and were similar in both groups. Scope time was signi cantly longer in Group-2. As scope time was signi cantly di erent between groups, the DAP and air kerma dose were normalized according to scope time (sec). In group-1 the nor- malized DAP and air kerma dose, normalized DAP and air kerma dose according to the body weight were statistically lower than Group-2. (p<0.001)
Figure 1 (#0113).
Conclusion: We demonstrated a signi cant radiation dose reduction by implementing 3.75 fps pulse uoroscopy rate which is the lowest possible rate. We claim that novel radiation dose reduction protocols could be easily applied without any increase in uoroscopy time and should be applied both for patient and health care provider safety.
Table 1 (#0112).
p <0.001 <0.001
DAP/ Scope time
Air kerma/ Scope time
Air kerma / Weight/ time
DAP/ Weight/ time
Group-1 485±300 4.4±2.9
Group-2 1580±2300 10.9±10.5 0.35±0.3 50.2±86
0.14±0.1
<0.001 <0.001
15.7±8.6
#0113
DESIGN AND VALIDATION OF HEMODYNAMIC CALCULATION SOFTWARE FOR DIRECT OPERATOR USE DURING CARDIAC CATHETERIZATION: THERE’S AN APP FOR THAT
Michael Ross, Jenny Zablah, Gareth Morgan, Neil Wilson University of Colorado School of Medicine/Children’s Hospital Colorado, Aurora, CO, USA
Background: Precise and immediate hemodynamic calculations are necessary in cardiac catheterization. More complex calculations (e.g. including dissolved oxygen or using advanced models of oxygen consumption) are time consuming by hand and tend to be error- prone. Furthermore, calculations tend to be either written on- eld, or performed by circulating sta that may not be familiar with the nuances of hemodynamic calculations. We sought to develop and validate a hemodynamics software application for use during cardiac catheterization.
Methods: The hemodynamics software application was developed for use with AppleTM tablets integrating accepted formulas (LaFarge
Hijazi, Z
20th Annual PICS/AICS Meeting Abstracts