Cumulative RPN values at the start and at the end of the study, main additional risk reducing measures at the end of the study and improvement ratio
Hospital number | Start | Main additional risk reduction for each source of risk at the end of the study | End | Improvement ratio (RPN2/RPN1) | ||||||||||||||||||
| Cumulative RPN (RPN1) | Yearly audit of each operator | Air | Worktop, walls, ceiling | SMD | Ampoules and vials | Hands and forearm of the operator | Working procedures | Cumulative RPN (RPN2) | ||||||||||||||
| Quarterly non-viable particle counting at rest | Correct position materials | Disinfection registered in a log | Increased frequency worktop disinfection | Wrapped SMD gripped by gloved hands only | Sterile pad | Low surface bioburden before disinfection | Improved disinfection technique | Validated disinfection technique | Monitoring after disinfection | Improved additional disinfection of critical spots | Check of glove damage | Good putting on technique | Glove disinfection before start and every 15 min | Sterile sleeves | Accurate and up to date SOPs | Non-touch working is a major topic during audits | Prevention of blocking first air is a major topic during audits | |||||
| 1 | 740 | + | – | + | + | + | + | + | + | + | – | – | + | + | + | + | – | – | + | + | 230 | 0.31 |
| 2 | 740 | – | – | – | + | – | – | – | – | – | – | – | – | - | + | – | – | – | – | – | 700 | 0.95 |
| 3 | 780 | + | – | – | + | – | + | + | + | + | – | – | + | + | – | – | + | + | + | + | 290 | 0.37 |
| 4 | 825 | + | +* | – | + | + | + | – | – | + | – | – | – | +† | – | ‡ | + | – | + | + | 365 | 0.44 |
| 5 | 795 | + | – | – | + | + | – | – | + | + | + | – | + | – | + | + | + | + | + | + | 280 | 0.35 |
| 6 | 820 | – | – | – | + | + | + | + | + | + | + | – | + | – | + | – | – | + | – | – | 505 | 0.62 |
| 7 | 795 | – | – | – | + | – | – | – | – | – | – | – | – | – | – | – | + | – | – | – | 725 | 0.91 |
| 8 | 760 | + | – | + | + | + | + | – | + | + | – | + | + | + | + | + | – | + | + | + | 280 | 0.37 |
| 9 | 630 | + | – | + | + | + | – | + | – | + | + | + | + | + | + | + | + | + | + | + | 235 | 0.37 |
+, additional risk reduction implemented; −, additional risk reduction not implemented.
*Continuous particle counting
†Double gloved hands
‡Frequent glove disinfection started at the end of 2019.
End, cumulative RPN after the final assessment; RPN, risk prioritisation number; SMD, sterile medical device; Start, cumulative RPN after the initial audit.