Key result
The CARTOUNIVU image integration module reduced fluoroscopy time during left atrial arrhythmia and ventricular tachycardia ablation compared to controls.
Why the study?
Does the CARTOUNIVU image integration module reduce fluoroscopy time and radiation dose in patients undergoing LAA and VT ablation?
Cohort (n=65)
Does the CARTOUNIVU image integration module reduce fluoroscopy time and radiation dose in patients undergoing LAA and VT ablation?
The CARTOUNIVU image integration module significantly reduces fluoroscopy time and radiation exposure during complex atrial and ventricular arrhythmia ablations without prolonging procedure duration.
Answers are grounded in this paper and cite their sources.
May support lower radiation exposure in LA/VT ablation; leaves open need for RCTs to confirm benefit and safety.
INTRODUCTION: Reduction of radiation exposure during cardiac arrhythmia ablation procedures is desirable. We sought to evaluate the utility of a new image integration module (CARTOUNIVU(TM) ) in reducing fluoroscopy times and dosages during left atrial arrhythmia (LAA) and ventricular tachycardia (VT) ablation procedures. METHODS AND RESULTS: Consecutive patients undergoing LAA (n = 28)/VT (n = 13) ablation using the CARTOUNIVU(TM) module were included. Total fluoroscopy time, radiation dose (total dose area product [tDAP], effective dose [ED]), and procedure duration were evaluated. A retrospective cohort of patients who underwent LAA (n = 16)/VT(n = 8) ablation without the new image integration module served as a control group. The use of the new image integration module significantly reduced mean fluoroscopy time (5.2 minutes [IQR 1.9;6.8] in the LAA ablation UNIVU group vs. 28.2 minutes [IQR 15.3;37.8] in the control group, P<0.001; 9.8 minutes [IQR 4.5;13.1] vs. 25.5 minutes [IQR 14.1;30.9] for VT ablation, P = 0.013), tDAP (2,088 cGy*cm(2) [IQR 664;2911] vs. 5,893 cGy*cm(2) [IQR 3088;8483], P< 0.001 for LAA ablation; 3,917 cGy*cm(2) [IQR 948;4217] vs. 12,377 cGy*cm(2) (IQR 3385;23157) for VT ablation patients, P = 0.025) and ED (4.1 mSv [IQR 1;5.8] vs. 11.8 mSv [IQR 6.2;16.9] for LAA ablation patients, P< 0.001; 7.8 mSv [IQR 1.9;8.4] vs. 24.7 mSv [IQR 6.8;46.3] for VT ablation patients, P = 0.025). Procedure duration did not significantly change (174 ± 45 minutes vs. 197 ± 36 minutes for LAA ablation, P = 0.083; 201 ± 51 minutes vs. 201 ± 63 minutes for VT ablation, P = 0.860). No serious adverse events related to the use of the CARTOUNIVU(TM) module occurred. CONCLUSIONS: The new image integration module significantly reduced total fluoroscopy time and mean radiation dose without influence in procedure duration during ablation of complex atrial and ventricular arrhythmias.
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Cano et al. (2015) conducted a cohort in Left atrial arrhythmia (LAA) and ventricular tachycardia (VT) (n=65). CARTOUNIVU image integration module vs. Ablation without the new image integration module was evaluated on Fluoroscopy time during left atrial arrhythmia (LAA) ablation (minutes) (p=<0.001). The CARTOUNIVU image integration module reduced fluoroscopy time during left atrial arrhythmia and ventricular tachycardia ablation compared to controls.
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