Volume 147, Issue 2 p. 351-356
Sinonasal Disorders

Exhaled Nitric Oxide Measurement in Patients Affected by Nasal Polyposis

Jacopo Galli MD

Jacopo Galli MD

ENT Institute, Catholic University of the Sacred Heart Rome, Rome, Italy

These authors contributed equally to this study.

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Paolo Montuschi MD

Paolo Montuschi MD

Pharmacology Institute, Catholic University of the Sacred Heart Rome, Rome, Italy

These authors contributed equally to this study.

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Giulio Cesare Passàli MD, PhD

Corresponding Author

Giulio Cesare Passàli MD, PhD

ENT Institute, Catholic University of the Sacred Heart Rome, Rome, Italy

Giulio Cesare Passàli, MD, PhD, Otorhinolaryingology Department, Catholic University of the Sacred Heart Medical School, L.go Vito 1, 00168 Rome, Italy Email: [email protected]Search for more papers by this author
Marianna Laruffa MD

Marianna Laruffa MD

ENT Institute, Catholic University of the Sacred Heart Rome, Rome, Italy

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Claudio Parrilla MD, PhD

Claudio Parrilla MD, PhD

ENT Institute, Catholic University of the Sacred Heart Rome, Rome, Italy

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Gaetano Paludetti MD

Gaetano Paludetti MD

ENT Institute, Catholic University of the Sacred Heart Rome, Rome, Italy

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First published: 02 April 2012
Citations: 1

Sponsorships or competing interests that may be relevant to content are disclosed at the end of this article.

Abstract

Objectives

Nitric oxide (NO) is produced in the respiratory tract with a major contribution coming from paranasal sinuses and the nose. The pathophysiological role of NO in the airways has been debated. The aims of this study were to measure fraction of exhaled NO (FENO), a validated marker of airway inflammation, in patients affected by nasal polyposis with and without asthma; to assess the importance of FENO measurement in detecting subclinical involvement of lower airways in patients with clinical rhinosinusal symptoms; and to clarify the impact of endoscopic surgical removal of polyps on airway inflammation.

Setting

The study was conducted at the O.R.L. Clinic and Clinical Pharmacology Unit, University Hospital Agostino Gemelli, Rome, Italy.

Study Design

Prospective study.

Subjects and Methods

Concentrations of FENO were measured with the NIOX system (Aerocrine, Stockholm, Sweden) by using a single-breath online method, according to the American Thoracic Society guidelines.

Results

Compared with those in healthy subjects (15 [11-19] ppb, n = 15; P <. 0001), FENO values were elevated in patients with nasal polyposis (41 [21-77] ppb, n = 43). There was no significant difference in FENO concentrations between asthmatic and nonasthmatic patients with nasal polyposis (P =. 73). Concentrations of FENO in patients with nasal polyposis were decreased after surgery (64.2 [30.0-132.7] ppb vs 56.0 [26.4-73.8] ppb, respectively; P =. 03).

Conclusion

The fraction of exhaled NO is elevated in the inflammatory process involving both the rhinosinusal district and lower airways, supporting the one-airway disease hypothesis.