Table 2 Item analysis. Percent of learners correct by procedural step: control vs. treatment at pre- and post-test
Procedural step | Pre-test | Post-test | ||||
|---|---|---|---|---|---|---|
Control | Treatment | Normalized gain or loss (% of possible) | Control | Treatment | Normalized gain or loss (% of possible) | |
01. Administer informed consent | 100% | 91% | − 9% | 100% | 100% | 0% |
02. Lead time-out | 7% | 18% | 12% | 100% | 68% | − 32% |
03. Don hat and mask | 74% | 77% | 12% | 72% | 100% | 100% |
04. Unpack bundle and line kit | 63% | 41% | − 35% | 80% | 95% | 75% |
05. Clean area with chlorhexidine | 11% | 45% | 38% | 52% | 73% | 44% |
06. Don gown and gloves | 22% | 36% | 18% | 64% | 77% | 36% |
07. Prepare insertion kit | 11% | 59% | 54% | 20% | 91% | 89% |
08. Apply sterile drape | 7% | 36% | 31% | 56% | 55% | − 2% |
09. Apply sterile sheath to ultrasound probe | 37% | 64% | 43% | 72% | 82% | 36% |
10. Set bed to Trendelenburg | 44% | 45% | 2% | 64% | 86% | 61% |
11. Inject lidocaine | 26% | 45% | 26% | 72% | 77% | 18% |
12. Advance seeker needle with ultrasound | 30% | 45% | 21% | 96% | 82% | − 15% |
13. Acquire venous return | 44% | 50% | 11% | 92% | 82% | − 11% |
14. Confirm guidewire with ultrasound | 0% | 27% | 27% | 44% | 68% | 43% |
15. Knick skin | 11% | 23% | 13% | 88% | 82% | − 7% |
16. Dilate vein | 19% | 41% | 27% | 96% | 91% | − 5% |
17. Advance catheter | 15% | 41% | 31% | 76% | 86% | 42% |
18. Remove guidewire | 4% | 45% | 43% | 76% | 82% | 25% |
19. Flush ports | 0% | 5% | 5% | 28% | 27% | − 4% |
20. Secure and dress catheter | 11% | 41% | 34% | 80% | 82% | 10% |
21. Order chest X-ray | 22% | 41% | 24% | 84% | 86% | 13% |