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Williarns 和 McNicol(1969)不能把哮呜性支气管炎和反复发作哮呜的幼儿同较大儿童的支气管哮喘区别开来,并认为这种幼儿是哮喘患者的一部份。最近 Temney 等(1978)对23个年龄为3.1～5.2岁有反复哮呜发作的小儿于运动前后研究其肺功能,以正常小儿作对照。结果有20例于运动后有支气管收缩,且所有23例经舒喘灵喷雾吸入后高峰呼出气流率上升,总呼吸道阻力下降,类似于较大哮喘儿童的生理反应。与之相反,Radfold(1975),
Williarns and McNicol (1969) can not distinguish between asthmatic bronchitis and recurrent asthmatic children with bronchial asthma in older children and consider the infant to be part of asthma. Recently, Temney et al. (1978) studied the pulmonary function of 23 children aged 3.1-5.2 years who had repeated episodes of masturbation before and after exercise, and compared them to normal children. RESULTS: Twenty patients had bronchoconstriction after exercise, and peak respiratory expiratory flow rates increased and total respiratory resistance decreased in all 23 patients treated with salbutamol spray, similar to the physiological responses in children with larger asthma. In contrast, Radfold (1975),