The Importance of Nasal Resistance in Obstructive Sleep Apnea Syndrome: A Study with Positional Rhinomanometry

Andrea De Vito; Stefano Berrettini; Anna Carabelli; Stefano Sellari-Franceschini; Enrica Bonanni; Sara Gori; Livia Pasquali; Luigi Murri

doi:10.1055/s-2001-12788

Sleep Breath 2001; 05(1): 003-012
DOI: 10.1055/s-2001-12788

ORIGINAL ARTICLE

The Importance of Nasal Resistance in Obstructive Sleep Apnea Syndrome: A Study with Positional Rhinomanometry

Andrea De Vito¹ , Stefano Berrettini¹ , Anna Carabelli¹ , Stefano Sellari-Franceschini¹ , Enrica Bonanni² , Sara Gori² , Livia Pasquali² , Luigi Murri²

¹E.N.T. Clinic, Department of Neurosciences, Pisa University, Pisa, Italy and
²Neurology Clinic, Department of Neurosciences, Pisa University, Pisa, Italy

Abstract

ABSTRACT

The importance of nasal obstruction in the pathogenesis of obstructive sleep apnea syndrome (OSAS) has not yet been totally defined. Numerous studies have reported an association between nasal obstruction and OSAS, but the precise nature of this relationship remains to be clarified. This study was undertaken to evaluate the prevalence of nasal obstruction disorders in a group of OSAS patients. For this purpose, we analyzed the nasal resistance of 36 OSAS patients by performing a traditional basal anterior active rhinomanometry test (AAR) and a positional AAR, with the patient in a supine position. Seven patients had a pathologic nasal resistance in the seated position that increased further in the supine position; 9 patients had normal resistance in the seated position but a pathologic resistance in the supine position. In 20 patients, nasal resistance was normal in both positions. No statistically significant differences in the degree of apnea/hypopnea index (AHI) was found between the 20 patients with normal positional AAR and the 16 with pathologic positional AAR (p = 0.13). Moreover, no statistically significant differences in the degree of AHI was found between the 7 patients with pathologic basal and positional AAR and the 9 patients with normal basal AAR and pathologic positional AAR (p = 0.38).

KEYWORD

Nasal resistance - positional anterior active rhinomanometry - obstructive sleep apnea syndrome

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