Biomaterial Database

[Differential diagnosis of stenoses of the large airways by means of lung function tests (author's transl)]. 1978

N Konietzko, and H Querfurt

The different pathophysiological mechanisms involved in producing airflow obstruction at different sites in the tracheobronchial tree enable their differentiation by means of pulmonary function tests. These tests include volume-time measurements at forced in- and expiration, flow-volume measurements forced in- and expiration and flow-pressure measurements in the bodyplethysmograph during quiet breathing. In 23 patients with localized stenosis of the central tracheobronchial tree (12 with extra-thoracic tracheal stenosis, 4 with intrathoracic tracheal stenosis and 7 with main bronchus stenosis) the following parameters proved to be of diagnostic value: In the differential diagnosis of intra-extra-thoracic tracheal stenosis the forced in-expiratory flow-volume curve, in main bronchus stenosis the plethysmographically obtained flow-pressure curve with a large phase lag at zero flow ("trapped air"). In extreme cases the qualitative analysis of the spirogram in connection with the static lung volumes can be diagnostic.

UI	MeSH Term	Description	Entries
D010993	Plethysmography, Whole Body	Measurement of the volume of gas in the lungs, including that which is trapped in poorly communicating air spaces. It is of particular use in chronic obstructive pulmonary disease and emphysema. (Segen, Dictionary of Modern Medicine, 1992)	Whole Body Plethysmography,Body Plethysmographies, Whole,Body Plethysmography, Whole,Plethysmographies, Whole Body,Whole Body Plethysmographies
D012129	Respiratory Function Tests	Measurement of the various processes involved in the act of respiration: inspiration, expiration, oxygen and carbon dioxide exchange, lung volume and compliance, etc.	Lung Function Tests,Pulmonary Function Tests,Function Test, Pulmonary,Function Tests, Pulmonary,Pulmonary Function Test,Test, Pulmonary Function,Tests, Pulmonary Function,Function Test, Lung,Function Test, Respiratory,Function Tests, Lung,Function Tests, Respiratory,Lung Function Test,Respiratory Function Test,Test, Lung Function,Test, Respiratory Function,Tests, Lung Function,Tests, Respiratory Function
D001982	Bronchial Diseases	Diseases involving the BRONCHI.	Bronchial Disease,Disease, Bronchial,Diseases, Bronchial
D003251	Constriction, Pathologic	The condition of an anatomical structure's being constricted beyond normal dimensions.	Stenosis,Stricture,Constriction, Pathological,Pathologic Constriction,Constrictions, Pathologic,Pathologic Constrictions,Pathological Constriction,Stenoses,Strictures
D003937	Diagnosis, Differential	Determination of which one of two or more diseases or conditions a patient is suffering from by systematically comparing and contrasting results of diagnostic measures.	Diagnoses, Differential,Differential Diagnoses,Differential Diagnosis
D005541	Forced Expiratory Volume	Measure of the maximum amount of air that can be expelled in a given number of seconds during a FORCED VITAL CAPACITY determination . It is usually given as FEV followed by a subscript indicating the number of seconds over which the measurement is made, although it is sometimes given as a percentage of forced vital capacity.	Forced Vital Capacity, Timed,Timed Vital Capacity,Vital Capacity, Timed,FEVt,Capacities, Timed Vital,Capacity, Timed Vital,Expiratory Volume, Forced,Expiratory Volumes, Forced,Forced Expiratory Volumes,Timed Vital Capacities,Vital Capacities, Timed,Volume, Forced Expiratory,Volumes, Forced Expiratory
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000402	Airway Obstruction	Any hindrance to the passage of air into and out of the lungs.	Choking,Airway Obstructions,Obstruction, Airway,Obstructions, Airway
D014135	Tracheal Stenosis	A pathological narrowing of the TRACHEA.	Stenoses, Tracheal,Stenosis, Tracheal,Tracheal Stenoses