TABLE 1.
Particle concentrations stratified by size during endoscopic dacryocystorhinostomy. Concentrations during each step of interest compared to baseline by Mann‐Whitney U Test
| 0.3–5.0 μm | >5.0 μm | |||||
|---|---|---|---|---|---|---|
| N | Median concentration (particles/m3) | P‐value | N | Median concentration (particles/m3) | P‐value | |
| Baseline | 16 | 127 561.84 | 16 | 2826.86 | ||
| LMA intubation | 23 | 199 646.64 | <.001 | 23 | 4593.64 | .023 |
| Nasolacrimal duct probing | 8 | 106 007.07 | .522 | 8 | 2650.18 | .976 |
| Middle meatal debridement | 12 | 104 416.96 | .471 | 12 | 2120.14 | .834 |
| Drilling | 12 | 106 360.42 | .069 | 12 | 2473.50 | .596 |
| Balloon insertion | 7 | 113 074.20 | .401 | 7 | 2120.14 | .990 |
| Tube insertion | 5 | 100 706.71 | .147 | 5 | 1766.78 | .230 |
| Posisef insertion | 5 | 113 579.01 | .741 | 5 | 1766.78 | .162 |
Bold values indicate significance at the p < 0.05 level.