To perform a systematic review and meta-analysis to quantify the technical success rate of adrenal venous sampling (AVS) with and without intraprocedural computed tomography (CT).
A systematic search of the Medline, Scopus, EMBASE, and Web of Science databases for comparative studies using intraprocedural CT was undertaken. More than 1,000 records were screened using titles and abstracts. Full texts of 121 studies were reviewed and 14 eligible studies were identified. Nine studies had adequate comparative data and were included in the meta-analysis.
A research synthesis was performed and data from 809 patients were pooled in multiple random effect models. Overall success rate of AVS without and with intraprocedural CT was 72.7% (59.3–83.0%) and 92.5% (86.6–95.9), respectively. The addition of intraprocedural CT increased the technical success rate by 19.8% (P < 0.001), with an odds ratio (OR) of 5.5 (3.3–9.2; P < 0.01). In meta-regression, odds of success with intraprocedural CT was associated with younger age (beta: 0.16 ± 0.05; P:0.001), higher body mass index (BMI; beta:0.08 ± 0.03; P:0.002), and higher selectivity index (defined as the ratio of cortisol in the adrenal vein to that in the inferior vena cava; beta:0.35 ± 0.08, P < 0.001). We found a linear inverse association between operator’s success without CT and improved success with intraprocedural CT (R2: 0.86).
Intraprocedural CT is not required for every case, but can be performed in difficult cases or when operators' success is limited. The benefit was more pronounced in younger patients with higher BMI, female gender, and with higher selectivity.
Level of evidence
III Systematic review and meta-analysis of non-randomized clinical trials.
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Hafezi-Nejad, N., Gullotti, D.M., Bailey, C.R. et al. Does Intraprocedural CT Improve the Success Rate of Adrenal Venous Sampling? A Systematic Review and Meta-Analysis of Data from 809 Patients. Cardiovasc Intervent Radiol (2021). https://doi.org/10.1007/s00270-021-02954-7
- Adrenal gland
- Primary hyperaldosteronism
- Adrenal vein sampling
- Interventional CT
- Cone-beam CT