DIAGNOSTIC VALUE OF MEAN TANGENT CURVE OF MAXIMAL EXPIRATORY FLOW-VOLUME CURVE IN SMALL AIRWAY DISEASE
- VernacularTitle:最大呼气流量-容积曲线的平均斜率对小气道病变的诊断价值
- Author:
Jingyao ZHAO
- Publication Type:Journal Article
- Keywords:
mean tangent curve;
maximal expiratory flow-volume curve;
small airway
- From:
Academic Journal of Second Military Medical University
1981;0(03):-
- CountryChina
- Language:Chinese
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Abstract:
On the basis of the measurement of maximal expiratory flow-volumo (MEFV) curve mean tangent curve(MTC)was calculated in 167 healthy nonsmolters, 67 patients with chronic bronchitis and 23 patients with restrictive diseases.Four paa-metfrs including MTC in 75-50%VC (MTC1), in 50-25 % VC (MTC2), in 25 % VC-RV(MTC3)and ratio of MTC: to MTC3(MTCE)wer3 recorded.The MEFV curve could be expresssd accurately and quantitatively by all these measurement values and the data of MTC could be used for differential diagnosis between restrictive disease and obstructive diseas; of the lung.Thes: results suggest that MTC is more sensitive for detecting early changes in small airway disease, and especially MTCR is more useful
