Nasal resistances are useful in identifying children with severe obstructive sleep apnea before polysomnography

Maurizio Rizzi, Josè Onorato, Arnaldo Andreoli, Stefano Colombo, Marica Pecis, Paola Marchisio, Marco Morelli, Nicola Principi, Susanna Esposito, Margherita Sergi

Research output: Contribution to journalArticlepeer-review


Objective: In this study, we would like to show that anterior rhinometry measurement of nasal resistance would be a simple and useful test to identify severe obstructive sleep apnea (OSA) in a population of children affected by adenotonsillar hypertrophy. Methods: Seventy-three consecutive children (44 males; mean age 5.4±1.2 years) with adenotonsillar hypertrophy, who complained sleep-disordered breathing, were studied. All the parents completed a questionnaire concerning the children's sleeping habits and sleep complaints before consultation; each child underwent a general paediatric examination and an evaluation of craniofacial features and upper airway patency. In all 73 children polysomnography was performed and anterior rhinometry nasal patency was measured. Results: The diagnosis of OSA was confirmed in 44/73 patients (60%). Total nasal resistance showed a significant direct correlation with apnea hypopnea index, arousal index, snoring time, percentage of sleep time spent at SaO 22% during sleep. Total nasal resistance was significantly related to snoring, mouth breathing and daytime sleepiness. The receiver operator characteristics (ROC) curve indicates that in the range of age of our sample a nasal resistance value of 0.59 Pa/cm 3/s has a sensitivity of 91% and specificity of 96% for identifying the children with adenotonsillar hypertrophy affected by OSA. Conclusions: Our study shows that in children with adenotonsillar hypertrophy nasal resistance seems to be risk factor for OSA. The anterior rhinometry appears as a useful tool in routine evaluation of sleep-disordered breathing in these patients.

Original languageEnglish
Pages (from-to)7-13
Number of pages7
JournalInternational Journal of Pediatric Otorhinolaryngology
Issue number1
Publication statusPublished - Aug 1 2002


  • Adenotonsillar hypertrophy
  • Nasal resistance
  • Obstructive sleep apnea
  • Polysomnography

ASJC Scopus subject areas

  • Otorhinolaryngology
  • Pediatrics, Perinatology, and Child Health
  • Pulmonary and Respiratory Medicine
  • Surgery


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