Abstract
Nasal congestion is one of the most common complaints in otolaryngology practice and can significantly impact the quality of life for patients. Objective and subjective assessments provide different information, but objective assessment of nasal obstruction is crucial for accurate diagnosis and appropriate treatment. This review demonstrates that peak nasal inspiratory flow (PNIF) is a reproducible and reliable measure of objective nasal patency. It is inexpensive, easy to use, suitable for serial measurements, and can be applied to patients of different age groups. PNIF is recommended for use in every outpatient clinic that treats patients with nasal congestion. To summarize the data on the application of PNIF in diagnosing conditions of the nasal airways. Publications (articles and relevant abstracts) available in the PubMed and eLibrary databases were analyzed. PNIF offers an objective and non-invasive assessment of nasal airflow, aiding in diagnosis, therapy monitoring, and preoperative planning. Further research, standardization, and establishment of normative data will enhance the informative value of peak nasal inspiratory flow in assessing nasal obstruction.
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