Table 6 Tools for the evaluation of nasal patency and flow
| Â | PNIF | Rhinomanometry | Acoustic rhinometry |
|---|---|---|---|
Diagnostic purposes | Â | Â | Â |
- unilateral disease | - | ++ | ++ |
- correlation with syptoms | +++ | + | + |
Use in children | Â | Â | Â |
2-6 y | - | + | +++ |
6-18 y | - | ++ | +++ |
Provocation studies | +++ | +++ | +++ |
Clinical trials | +++ | +++ | +++ |
Home monitoring | +++ | - | - |
Evaluation of effect of treatment | +++ | +++ | +++ |