鼻副鼻腔内流れの術前術後鼻腔抵抗比較

―数値計算値と実測値―

抄録

Recently, the number of patients complaining of nasal congestion has increased, but results of objective tests such as rhinal airflow measurements may not match subjective symptoms. The purpose of this study is to find useful information for treatments by CFD. Flows were numerically simulated in nasal cavity models with paranasal sinuses before and after surgery, and nasal resistance was compared with actual measurement. As results, on comparison of nasal resistance before and surgery, the tendency of change in both-side resistance was almost consistent between computed and actual measurements, and the larger the air passage of nasal cavity, the lower the nasal resistance. Comparison of expiration and inspiration showed that even in a same model the latter is easier than the former to pass through the sinuses but with little change of nasal resistance. A pre- and post-operative comparison of right-side inspiration demonstrated that the surgery resulted in airflow to the paranasal sinuses and reduced nasal resistance. In the future it is necessary to increase the number of samples.