RESUMEN
<p><b>Introduction: </b>We evaluated the risk of shortness of inhalation when using laninamivir without inhalation practices.</p><p><b>Method: </b>We counted the number of attempts required by each patient to sound the whistle. We classified the patients into the following categories: ①Sound rang in the first attempt; ②Sound rang within 3 attempts; ③Sound rang with in 5 attempts; ④Sound rang within 10 attempts; ⑤The whistle did not sound. We assessed the following: 1. the rate of patients younger than 10 years of age assessed category ② or less,; 2. the rate of patients of teen-age, and 3. the rate of patients of 20 years of age or older, assessed category ③ or less.</p><p><b>Results: </b>We examined 56 patients, and we found that the rate for 1. was 7/11= 63.6%, for 2. was 4/33= 12.1%, and for 3. was 2/12= 16.7%.</p><p><b>Conclusion: </b>We found that more than 60% of patients younger than 10 years of age and more than 10% of patients of 10 years of age or older were at risk of shortness of inhalation when using laninamivir without inhalation practices. And we propose other medication if patients cannot sound the whistle within about 5 attempts.</p>