Deviated Nasal Septum and Inferior Turbinate Hypertrophy: Are They the Independent Cause of Sleep-Related Breathing Disorders?
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Background and Objectives Nasal obstruction has been assumed to be correlated withsleep-related breathing disorder (SRBD). However, a definite correlation between nasal ob-struction and SRBD is still controversial. This study aimed to define whether symptoms andseverity of the deviated septum of nose (DSN) and inferior turbinate hypertrophy (ITH) arecorrelated with the severity of SRBD. Subjects and Method This is a retrospective study of 60 patients’ preoperative polysom-nography who have undergone septoplasty and turbinoplasty. Patients with obesity, tonsillarhypertrophy, high Mallampati class, mandibular problem, and nasal polyp or concha bullosawere excluded from the analysis. Subjective nasal obstruction scores, and DSN/ITH gradeswere collected, and correlations between apnea-hypopnea index (AHI), lowest oxygen satura-tion, and snoring time were analyzed. Results The average of AHI, lowest saturation and relative snoring time were 3.72±5.79,89.78%±6.81%, and 8.45%±10.43%, respectively. The number of patients who were normal,obstructive sleep apnea (OSA) syndrome mild, moderate, and severe were 49 (82%), 6 (10%),4 (7%) and 1 (1%), respectively. The degrees of DSN and ITH, and subjective nasal congestionscores showed no significant correlation with polysomnographic results. Age and AHI had acorrelation coefficient of 0.54 ( p<0.001) and AHI increased with increasing age. Multiple lin-ear regression demonstrated that age (regression coefficient 0.229, 95% confidence interval0.135 to 0.322, p<0.001) was significantly associated with AHI, while other variables showedno statistically significant association with AHI ( p>0.05). Conclusion Septal deviation and turbinate hypertrophy are unlikely to cause OSA/snoringindependently without other causes of SRBD.
Abstract
Background and Objectives Nasal obstruction has been assumed to be correlated withsleep-related breathing disorder (SRBD). However, a definite correlation between nasal ob-struction and SRBD is still controversial. This study aimed to define whether symptoms andseverity of the deviated septum of nose (DSN) and inferior turbinate hypertrophy (ITH) arecorrelated with the severity of SRBD. Subjects and Method This is a retrospective study of 60 patients’ preoperative polysom-nography who have undergone septoplasty and turbinoplasty. Patients with obesity, tonsillarhypertrophy, high Mallampati class, mandibular problem, and nasal polyp or concha bullosawere excluded from the analysis. Subjective nasal obstruction scores, and DSN/ITH gradeswere collected, and correlations between apnea-hypopnea index (AHI), lowest oxygen satura-tion, and snoring time were analyzed. Results The average of AHI, lowest saturation and relative snoring time were 3.72±5.79,89.78%±6.81%, and 8.45%±10.43%, respectively. The number of patients who were normal,obstructive sleep apnea (OSA) syndrome mild, moderate, and severe were 49 (82%), 6 (10%),4 (7%) and 1 (1%), respectively. The degrees of DSN and ITH, and subjective nasal congestionscores showed no significant correlation with polysomnographic results. Age and AHI had acorrelation coefficient of 0.54 ( p<0.001) and AHI increased with increasing age. Multiple lin-ear regression demonstrated that age (regression coefficient 0.229, 95% confidence interval0.135 to 0.322, p<0.001) was significantly associated with AHI, while other variables showedno statistically significant association with AHI ( p>0.05). Conclusion Septal deviation and turbinate hypertrophy are unlikely to cause OSA/snoringindependently without other causes of SRBD.
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