Abstract
目的 检测婴幼儿患呼吸系统疾患时肺功能状况,研究探讨2600型小儿肺功能仪操作方法,以协助临床诊断并指导治疗.方法采用SensorMedics2600型小儿肺功能仪,对611例呼吸系统疾患婴幼儿进行睡眠时潮气呼吸流速容量(TBFV)环、被动呼气流速容量(PFV)曲线检查,部分患儿进行功能残气量(FRC)测定.结果611例患儿中检出肺功能异常者558例(91.32%).其中表现小气道阻力升高505例(82.65%),大气道阻力升高401例(65.63%);同时有大、小气道阻力升高348例(56.96%);呼吸系统静态顺应性降低149例(24.39%),增高6例(0.98%).279例功能残气量测试,增高46例(16.49%),减少104例(37.28%).162例支气管舒张试验阳性68例(41.98%);阴性94例(58.02%).各项指标均正常53例(9.33%).结论本检测方法客观地反映了患儿潮气通气量指标、气道阻力、颇应性、功能残气量情况及气道可逆性,对指导临床诊断治疗及疗效判断有重要的应用意义,正确的操作方法保证了测试结果的准确性和可靠性。
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