Sleep Apnea due to Nasal Disorder.

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We evaluated the relationship between nasal obstruction and sleep apnea in patients with various nasal disorders.The subjects were 38 patients admitted to our department for surgical treatment of diseases of the nose or paranasal sinuses; 20 patients with chronic sinusitis, 11 with deviated nasal septum and 7 others.Rhinomanometry was carried out on the day before operation to determine nasal resistance. The frequency of apneic episodes was recorded with an apnomonitor on the night before the operation. These patients were considered to have pathological apnea (pathological group) when they had 30 or more apneic episodes during 7 hours of sleep but to be normal (normal group) when the frequency of apnea was lower.Rhinomanometry and apnomonitor studies were repeated in these 38 patients 7 days after the operation, and the results were compared with the pre operative figures.Pathological apnea was noted in 19 (50%) of the 38 patients before the operation. The mean frequency was 159.4±117.3 apneic episodes. The mean frequency was 8.0±6.9 apneic episodes in the normal group.In the 19 pathological patients 7 days post-operation, the incidence of sleep apnea was dramatically reduced to a mean frequency of 81.6±113.8 apneic episodes.The mean respiratory resistance through both nostrils was reduced to 12.8±6.3cmH2O/l/sec in the pathological group and to 7.7±4.0cmH2O/l/sec in the normal group.Snoring was observed 17 (89.5%) of the 19 in the pathological group and in 10 (52.6%) of the 19 in the normal group.
耳鼻咽喉科臨床学会の論文

Sleep Apnea due to Nasal Disorder.

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