肺功能非特异性表现的特点与临床意义  被引量:8

The characteristics and clinical manifestation of subjects with non-specific pattern of pulmonary function tests

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作  者:周德训[1] 魏敬安[1] 陈清[1] 改军[1] 陈燕文[1] 高占成[1] 

机构地区:[1]北京大学人民医院呼吸与危重症医学科,100044

出  处:《中华结核和呼吸杂志》2013年第11期821-824,共4页Chinese Journal of Tuberculosis and Respiratory Diseases

基  金:国家科技支撑计划课题(2012BAI05B02)

摘  要:目的 分析肺功能非特异性表现(NSP)患者的肺功能及临床影像诊断的特点,探讨其临床意义.方法 纳入北京大学人民医院呼吸科肺功能室2009年7月1日至2010年2月24日成年患者1933例的肺功能结果,选取其中NSP患者的肺功能数据、临床诊断及影像资料,与肺功能正常人群进行比较分析.正态分布数据组间比较采用t检验,非正态分布数据组间比较采用Mann-Whitney U检验,率的比较采用x2检验.结果 NSP组61例,对照组1017例,体重指数分别为(24.5±4.6)和(24.5±3.8) kg/m2,差异无统计学意义(=0.008,P >0.05);年龄的中位数(四分位间距)分别为64(49 ~74)和56(42 ~70)岁,吸烟指数的中位数(四分位间距)分别为0.4(0 ~20)和0(0~10)包年,差异均有统计学意义(Z值分别为-2.209和-2.571,均P<0.05).NSP组FEV1占预计值%、FVC占预计值%、FEV1/FVC、残气容积占预计值%和肺总量占预计值%的中位数(四分位间距)分别为69% (66% ~73%)、75%(70%~77%)、75% (73% ~78%)、118%(105% ~ 145%)和86% (82% ~ 93%),均显著低于对照组[95%(87%~104%)、98% (90% ~ 106%)、79%(76%~84%)、101%(88% ~114%)和94% (88% ~ 102%)],差异均有统计学意义(Z值为-13.059~-5.185,均P<0.05).NSP组和对照组的残气容积/肺总量分别为(52±11)%和(39±9)%,差异有统计学意义(t=-10.351,P<0.05).肺总量显著降低提示有通气受限,而残气容积和残气容积/肺总量显著升高则提示有气体潴留.NSP组患者的临床诊断包括阻塞性和限制性疾病,部分患者的影像学显示肺部病变严重,有31例无肺部疾病诊断.结论 年龄和吸炯可能对NSP产生影响,肥胖对NSP的影响有限.NSP具有阻塞性和限制性通气功能障碍的特点,但其临床病变范围广泛,无疾病特异性,临床意义有限.Objective To analyze the characteristics of pulmonary function and the clinical significance of non-specific pattern (NSP).Methods A total of 1933 pulmonary function tests of adult patients were analyzed,and those with NSP were selected.The pulmonary function test results,clinical diagnosis and radiological manifestations were analyzed.Normal distribution data were compared by t test,while non-normal distribution data were compared by Mann-Whitney U test,and x2 test was used to compare ratios.Results There were 61 patients in the NSP group and 1017 in the control group.The BMI of the 2 groups was (24.5 ± 4.6) and (24.5 ± 3.8) kg/m2,respectively,being not significantly different (t =0.008,P 〉0.05).The age was 64 (49-74) years and 56 (42-70) years,and the smoking index was 0.4(0-20) and 0 (0-10),respectively,showing no significant differences (Z values were-2.209 and -2.571,respectively,all P 〈 0.05).In the NSP group,FEV1 was 69% (66%-73%) predicted,FVC 75% (70%-77%) predicted,FEV1/FVC75% (73%-78%),RV 118% (105%-145%) predicted,and TLC 86% (82%-93%) predicted,which were significantly different as compared to those of the control group [95% (87%-104%),98% (90%-106%),79% (76%-84%),101% (88%-114%)and 94% (88%-102%),respectively],(Z values are-13.059--5.185,all P 〈 0.05).RV/TLC was (52 ± 11) % in the NSP group and (39 ± 9) % in the control group,the difference being significant (t =-10.351,P 〈 0.05).The decreased TLC indicated restricted ventilation,while the increased RV and RV/TLC indicated air trapping.The clinical diagnosis of NSP included obstructive and restrictive diseases,some of which showed severe radiological abnormalities,but there were 31 patients without pulmonary lesions.Conclusions Age and smoking,but not obesity,may play a role in NSP.NSP has characteristics of obstructive and restrictive ventilation defects,but does not associate with particular diseases,thus having limited clinical significance.

关 键 词:呼吸功能试验 小气道阻塞综合征 肺功能非特异性表现 

分 类 号:R563.9[医药卫生—呼吸系统]

 

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