Evaluation of nasal function in patients with COVID-19: nasal secretion, nasal clearance, and SNOT-22 score

Differential olfactory outcomes in COVID‐19: A large healthcare system population study

“…There also appears to be a statistically significant relationship between persistent smell and taste dysfunction and psychological domain scores (odds ratio [OR] 1.06, 95% confidence interval [CI] 1.04 to 1.08), suggesting an interplay between psychological symptoms and self‐reported olfactory/taste symptoms from COVID, but this may be of limited clinical utility given the small effect size. A recent study also reported that COVID‐19 patients had nearly double the average total SNOT‐22 scores compared with the matched negative controls 10 . Thus, the SNOT‐22 instrument may be useful in measuring and following post‐COVID‐19 rhinologic symptoms and olfactory dysfunction.…”

“…A recent study also reported that COVID‐19 patients had nearly double the average total SNOT‐22 scores compared with the matched negative controls. 10 Thus, the SNOT‐22 instrument may be useful in measuring and following post‐COVID‐19 rhinologic symptoms and olfactory dysfunction.…”

The residual effect of coronovirus disease 2019 on olfactory acuity and mucociliary clearance time: a cross-sectional, controlled study

“…Baki et al showed that the mean saccharin time was longer (16.3 minutes) in patients with active Covid-19 infections than in patients in the control group (8.6 minutes). 6 In another study, Koparal et al reported a significantly longer (15.5 minutes) mucociliary clearance time than the control group (9.5 minutes). 7 Our study showed that this prolonged mucociliary time persists for at least six months in patients with a history of Covid-19 accompanied by sudden onset and ongoing olfactory dysfunction.…”

“…showed that the mean saccharin time was longer (16.3 minutes) in patients with active Covid-19 infections than in patients in the control group (8.6 minutes). 6 In another study, Koparal et al . reported a significantly longer (15.5 minutes) mucociliary clearance time than the control group (9.5 minutes).…”

“…5 It has been previously reported that Covid-19 infection impairs mucociliary clearance time in the active infection period. 6,7 However, its long-term effects on mucociliary clearance time remain unknown. Moreover, the question regarding the differences in the long-term olfactory functions of patients post-Covid-19, with and without olfactory dysfunction, remains to be answered.…”