Table 2.
Adrenal venous sampling results and outcome: success rates, lateralization, and surgery.
| Total; n = 55 | Rapid Cortisol; n = 19 | Historical Control; n = 36 | p-Value | |
|---|---|---|---|---|
| Right Adrenal Vein | ||||
| Success rate (%) | 39 (70.9%) | 15 (78.9%) | 24 (66.7%) | p = 0.34 |
| Sampling attempts | p = 0.87 | |||
| 1 | 39 (72.2%) | 13 (68.4%) | 26 (74.3%) | |
| 2 | 12 (22.2%) | 5 (26.3%) | 7 (20.0%) | |
| 3 | 3 (5.6%) | 1 (5.3%) | 2 (5.7%) | |
| LAB-SI median (IQR) | 18.0 [2.6–28.8] | 18.0 [5.2–35.7] | 17.6 [0.98–28.0] | p = 0.58 |
| Left Adrenal Vein | ||||
| Success rate (%) | 54 (98.2%) | 19 (100%) | 35 (97.2%) | p = 1.00 |
| 1 sampling attempt (%) | 55 (100%) | 19 (100%) | 36 (100%) | NA |
| LAB-SI median (IQR) | 8.5 [6.3–12.4] | 10.6 [6.5–15.1] | 8.1 [5.85–11.8] | p = 0.48 |
| Additional AVS data | ||||
| Lateralization (%) | 22/37 (59.5%) | 9/14 (64.3%) | 13/23 (56.5%) | p = 0.74 |
| Lateralization side | p = 0.86 | |||
| No lateralization | 15 (40.5%) | 5 (35.7%) | 10 (43.5%) | |
| Right | 3 (8.1%) | 1 (7.1%) | 2 (8.7%) | |
| Left | 19 (51.4%) | 8 (57.1%) | 11 (47.8%) | |
| Lateralization index median (IQR) | 7.16 [1.45–30.45] | 7.63 [2.05–25.6] | 5.8 [1.3–30.9] | p = 0.79 |
| Complications (n) | 1 | 1 | 0 | |
| Duration (min) | 56.6 ± 25.2 | 58.06 ± 24.2 | 54.3 ± 27.6 | p = 0.69 |
| Surgical treatment (%) | 21/53 (39.6%) | 7/19 (36.8%) | 14/34 (41.2%) | p = 0.76 |
LAB-SI, laboratory selectivity index; IQR, interquartile range.