Objective (4-phase rhinomanometry) and subjective
(subject- and investigator-rated reflective TNSS
and TNNSS)
Expiratory airflow significantly greater with DL vs
PBO (P = 0.046)
Nasal airflow rate (during ascending inspiratory phase)
increased with DL and decreased with PBO (P = 0.16)
Subject- and investigator-rated reflective TNSS
(including nasal congestion) significantly decreased
with DL vs PBO (−2.7 vs −1.9, respectively; P = 0.02)
No significant difference between DL and PBO in
reduction in individual symptom score for nasal
congestion
Mean change from BL in subject-rated reflective TNSS
(including nasal congestion) significant with DL vs
PBO after 1 wk in the morning (P = 0.05) and evening
(P = 0.01) and after 2 wk in the morning (P = 0.03)