Nasal Nitric Oxide in Chronic Rhinosinusitis with or without Nasal Polyps: A Systematic Review with Meta-Analysis.
Pasquale AmbrosinoAntonio MolinoGiorgio Alfredo SpedicatoPaolo ParrellaRoberto FormisanoAndrea MottaMatteo Nicola Dario Di MinnoMauro ManiscalcoPublished in: Journal of clinical medicine (2020)
nNO levels are significantly lower in CRSwNP, especially when using higher aspiration flows. Additional studies are needed to define one single standardized method and normal reference values for nNO.