SciELO - Scientific Electronic Library Online

vol.76 issue5Balloon sinuplasty, an initial assessment: 10 cases, results and follow-upService profile of Orthognathic Surgery of a medical school author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand



Related links

  • On index processCited by Google
  • Have no similar articlesSimilars in SciELO
  • On index processSimilars in Google


Brazilian Journal of Otorhinolaryngology

Print version ISSN 1808-8694


RODRIGUES, Marcos Marques; DIBBERN, Ralph Silveira  and  GOULART, Carla W. Kruel. Nasal obstruction and high Mallampati score as risk factors for Obstructive Sleep Apnea. Braz. j. otorhinolaryngol. (Impr.) [online]. 2010, vol.76, n.5, pp.596-599. ISSN 1808-8694.

Respiratory sleep disorders are strongly associated with upper airway patency. Nasal obstruction is associated with higher incidences of sleep apnea, primarily by increasing the negative pressure on the airway during inspiration. AIMS: To evaluate the influence of nasal obstruction in the worsening of sleep apnea in patients with OSA and a high score on the modified classification of Mallampati. MATERIALS AND METHODS: We evaluated and classified 206 patients complaining of snoring, and with a past suggestive of OSA through the Modified Mallampati score, Friedman, nasal obstruction and the severity of OSA by AHI. RESULTS: 168 patients who underwent polysomnography were included. Cross-plotting was made comparing the modified Mallampati score, nasal obstruction and AIH. The odds ratio between high Mallampati score and AHI was OR = 5.053, 95% CI = 1.458 to 7.517 (p = 0.0071). High Mallampati score associated with nasal obstruction was correlated with OSAS (p = 0.0227). However the influence of nasal obstruction on the relationship of high Mallampati score and OSA was not significant: OR = 2.850, 95% CI = 0.992 to 8.189. CONCLUSION: The combination of high Mallampati score and nasal obstruction represents a greater risk factor for worsening of OSA.

Keywords : sleep apnea, obstructive; nasal obstruction.

        · abstract in Portuguese     · text in English | Portuguese     · English ( pdf ) | Portuguese ( pdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License