Related Experiment Video
Updated: Aug 14, 2026

Evaluating Regional Pulmonary Deposition using Patient-Specific 3D Printed Lung Models
Published on: November 11, 2020
[The utility of peak nasal inspiratory flow rate for clinical practice]
1Department of Nasopharyngeal Carcinoma, Cancer Center, Sun-Yat-Sen University, Guangzhou 510060.
Objective:
To find out whether peak nasal inspiratory flow rate (PnIFR) of one side nose can indicate nasal patency.
Method:
PnIFR was measured using RHAT-301 wind rate meter (Qinghuatongfang Incorporated Company). One hundred subjects were recruited. We measured PnIFR of every side of nose of all subjects before and after using 3% ephedrine and registered the grade of patients' complaint of nasal obstruction.
Result:
PnIFR in normal male and in normal female are different; PnIFR in normal and in patients are different; The grade of patients' complaint of nasal obstruction is correlated with PnIFR; PnIFR in patients before and after using ephedrine are different.
Conclusion:
PnIFR of one side nose can indicate the severity of nasal obstruction; RHAT-301 flow meter is convenient to measure PnIFR for clinical practice, and PnIFR of one side nose can indicate nasal patency; PnIFR of one side nose can indicate the effect of drugs on nasal airway resistance (NAR).
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