Operator Radiation Exposure Comparing the Left Radial Artery Approach and a Uniform Hyper-Adducted Right Radial Artery Approach: The Hyper-adducted Right Radial Artery (HARRA) Study
Authors' conclusion
The LRA was associated with significantly less cumulative and normalized radiation exposure to the thorax, abdomen, left eye, and right eye of the primary operator compared with HARRA during diagnostic cardiac catheterization. Operators should consider using LRA more frequently than HARRA for diagnostic cardiac catheterization as this approach can reduce occupational radiation exposure.
Study context
- Population
- Patients undergoing diagnostic cardiac catheterization; radiation exposure of the primary operatorpatients randomized
- Participants
- 534 patients
- Comparison
- Left radial artery (LRA) approach compared with a uniform hyper-adducted right radial artery (HARRA) approach
- LRAn = 269
- HARRAn = 265
Primary result
As reported in the abstract
Cumulative radiation, thorax
P < 0.001
Further findings
Cumulative radiation, abdomen
P < 0.001
Cumulative radiation, left eye
P < 0.001
Cumulative radiation, right eye
P = 0.01
Subclavian tortuosity · lower with LRA
P < 0.001
| Outcome | LRA | HARRA | P value |
|---|---|---|---|
| Normalized radiation, thorax | 0.38 ± 0.35 | 0.49 ± 0.24 | P < 0.001 |
| Normalized radiation, abdomen | 1.06 ± 0.72 | 1.38 ± 0.69 | P < 0.001 |
| Normalized radiation, left eye | 0.10 ± 0.09 | 0.15 ± 0.10 | P < 0.001 |
| Normalized radiation, right eye | 0.04 ± 0.06 | 0.05 ± 0.06 | P = 0.02 |
Original publication
Operator Radiation Exposure Comparing the Left Radial Artery Approach and a Uniform Hyper-Adducted Right Radial Artery Approach: The HARRA Study. Circ Cardiovasc Interv. Published 19 March 2025. doi:10.
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