In plain language
In 294 transcatheter aortic valve replacement (TAVR) procedures at one US hospital, heavier patients, surgical cutdown access and vascular complications were linked to higher patient radiation dose. Staff dose was not measured, though patient dose drivers often influence scatter to the team.
At a glance
- Type of study
- Original research, Retrospective cohort study
- Who was studied
- Patients
- Size
- n = 294 procedures
- Where
- United States
- Summary based on
- the abstract
What it found
Median patient dose-area product during TAVR was 169 Gy*cm2.
Key figures: median dose-area product (DAP) 169 Gy*cm2 [interquartile range (IQR) 106-238]; n=294
Higher patient weight, cutdown transfemoral access, higher creatinine and hemoglobin, and vascular complications predicted higher DAP.
Regression models explained under half of DAP variance.
Key figures: r2 0.457 (27-variable) and 0.420 (8-variable)
Procedure year was not a significant predictor, suggesting no learning curve effect on dose.
Authors suggest percutaneous femoral access may help reduce exposure.
Limits to keep in mind
Single-centre retrospective registry analysis with two operators and one imaging system; measures patient dose only, with no staff dosimetry, and models explain under half of dose variation.
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How this summary was made
ORSIF prepared this summary with AI assistance from the abstract of the paper. A program then checked that the passage supporting each finding appears word for word in that source. A person has not yet reviewed each summary, so read the original before relying on a number. ORSIF summarizes research and does not endorse any product or company. Report a problem with this summary.
Prepared November 3, 2026.