潮气呼吸测定分析毛细支气管炎婴儿通气功能

目的　了解毛细支气管炎患儿通气功能状况、通气功能障碍类型及气道阻塞程度。方法　采用德国耶格公司的MasterScreen肺功能测定仪,测定74例毛细支气管炎患儿急性期潮气呼吸功能,分析潮气呼吸流速容量(TBFV)环、每千克体重潮气量(VT/kg)、呼吸频率(RR)、吸呼比(Ti/Te)、达峰时间比(TPF %TE)、达峰容积比(VPF %VE) ,确定通气功能状况、通气功能障碍类型及气道阻塞程度。结果　每千克体重潮气量下降,呼吸频率加快,达峰时间比和达峰容积比下降。TBFV环呈阻塞性改变40例(54 .1 % )、限制性改变6例(8.1 % ) )、混合性改变2 3例(31 .1 % )、正常5例(6 .8% )。轻度阻塞1 5例(2 3 .8% ) ,中度阻塞2 5例(39.7% ) ,重度阻塞2 1例(33.3 % ) ,极重度阻塞2例(3 .2 % )。结论　毛细支气管炎患儿存在明显通气功能异常,主要为阻塞性和混合性通气功能障碍。气道以中重度阻塞为主。

Tidal breathing analysis for ventilatory lung function in infants with bronchiolitis

Objective To examine the ventilatory lung function in infants with bronchiolitis.Methods Tidal breathing flow volume (TBFV) loop was tested in 74 cases of bronchiolitis during the acute phase. Its parameters included tidal volume per kilogram (VT/Kg), percent of time to peak tidal expiratory flow (TPE%TE), and percent of tidal volume to peak tidal expiratory flow (VPF%VE). Results VT/Kg, TPF%TE and VPF%VE decreased, while RR increased. TBFV loop showed obstructive in 40 cases (54.1%), restrictive in 6 (8.1%), mixed in 23 (31.1%) and normal in 5 (6.8%). The degree of airway obstruction was mild in 15 cases (23.8%), moderate in 25 (39.7%), severe in 21 (33.3%) and very severe in 2 (3.2%). Conclusion Ventilatory lung function in infants with brochiolitis during the acute phase is obviously not normal. It is mainly obstructive and has mixed ventilatory disturbance. The degree of airway obstruction is mainly moderate or severe.