[The influence of peak inspiratory flow and inhalation technique on inhaled steroid to patients with bronchial asthma].

We investigated the correlation of peak inspiratory flow (PIF) with peak expiratory flow (PEF) in 29 bronchial asthma patients, and the improvement of inhalation technique with a dry powder inhaler (DIP) before and after medical consultation in 3 patients. There was a significant positive correlation (R = 0.772, p < 0.001) between PIF and PEF in asthmatics. Furthermore, PIF and PEF the values were low in elderly women with combined complications of emphysema. Two of 3 patients who had experienced the problem of residual medicine improved their inhalation technique after the medical consultation compared with before. These results indicate that the clinical examination of PIF and PEF and medical consultation on inhaled steroid use in bronchial asthma patients could be important.