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Learning curve in transradial coronary angiography
Jen Li Looi1, Andrew Cave, Seif El-Jack
1Cardiovascular Unit, Department of Cardiology, North Shore Hospital, Auckland, New Zealand.
The American Journal of Cardiology
|July 30, 2011
Summary
Transradial (TR) cardiac catheterization is a viable alternative to transfemoral (TF) access, with similar complication rates and procedural times. The technical learning curve for TR angiography is short, with performance improving significantly with experience.
Area of Science:
- Cardiology
- Interventional Cardiology
- Vascular Access
Background:
- Transradial (TR) cardiac catheterization is underutilized, potentially due to perceived technical challenges and longer procedure durations.
- Transfemoral (TF) access remains the more common approach for coronary angiography.
Purpose of the Study:
- To compare the procedural and fluoroscopic times, contrast volume, and complication rates of TR versus TF coronary angiography.
- To evaluate the impact of operator experience on TR procedure outcomes.
Main Methods:
- A retrospective analysis of 1,001 diagnostic coronary angiograms (661 TR, 340 TF) performed over 12 months.
- Comparison of procedural metrics between TR and TF access, stratified by operator TR experience (radial expert [REx] vs. non-radial expert [nREx]).
Main Results:
- TR angiography had a 92% success rate, with similar complication rates to TF access.
- While fluoroscopic times were longer for TR (5.3 min vs. 4.0 min), total procedural times were comparable (24 min vs. 22 min).
- Initially, nRExs had longer fluoroscopic and procedural times than RExs, but these differences diminished with experience, showing significant improvement within the nREx group over time.
Conclusions:
- Transradial coronary angiography is a safe and effective alternative to transfemoral access.
- The technical learning curve for TR procedures is relatively short, with performance approaching that of experienced operators over time.
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