TABLE II.
Changes in Particle Concentration During Nasal Endoscopy With Debridement.
| Timing | Particle Concentration (Mean, SD) | Mean Difference (95% CI) * | P Value* |
|---|---|---|---|
| Preprocedure | 5,539 (2,725) | Reference | N/A |
| Scope | 7,169 (2,685) | 1,629 (−96 to 3,354) | .063 |
| Cold instrumentation | 8,002 (3,418) | 2,462 (837 to 4,088) | .005 |
| Suction | 8,514 (3,449) | 2,973 (1,419 to 4,529) | .001 |
| Postprocedure | 5,816 (2,417) | 276 (−1,120 to 1,673) | .683 |
*
Mean difference is for each instrument versus the preprocedure concentration; n = 19 observations for pre‐ and postprocedure and for suction, 15 for cold instrumentation, 14 for scope.