Biomaterial Database

[Reference values of respiratory parameters in adults 4th paper: reference values for screening parameters of lung mechanics (author's transl)]. 1978

E Müller, and H Wuthe, and J Vogel

Reference values for screening parameters, evaluating the shape of flow-volume-curves on forced expiration, were calculated from measurements in 1127 healthy subjects aged between 13 and 72 years. The following parameters were determined by means of the electronic spirometer pneumo-test: 1. the peak flow value Vmax, 2. the whole time constant tauges of the flow volume diagram and its components tau1 and tau2 from the upper and the lower part of the flow volume curve, 3. the most frequent time constant taumax in the distribution function of time constants. In relation to age Vmax-values show a maximum at 35 years and a significant decrease in younger and older subjects. Values in women are significant smaller than in men throughout the range of age. The time constants tauges and tau1 decrease significantly with increase in age. Differences between females and males are not statistically significant for these parameters. The time constants tau2 and taumax are age-independent. Their mean values are identical in all age decades and in women significantly smaller than in man.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
D012016	Reference Values	The range or frequency distribution of a measurement in a population (of organisms, organs or things) that has not been selected for the presence of disease or abnormality.	Normal Range,Normal Values,Reference Ranges,Normal Ranges,Normal Value,Range, Normal,Range, Reference,Ranges, Normal,Ranges, Reference,Reference Range,Reference Value,Value, Normal,Value, Reference,Values, Normal,Values, Reference
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
D005260	Female		Females
D005540	Forced Expiratory Flow Rates	The rate of airflow measured during a FORCED VITAL CAPACITY determination.	Expiratory Forced Flow Rates,Flow Rates, Expiratory Forced,Flow Rates, Forced Expiratory
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000293	Adolescent	A person 13 to 18 years of age.	Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults
D000367	Age Factors	Age as a constituent element or influence contributing to the production of a result. It may be applicable to the cause or the effect of a circumstance. It is used with human or animal concepts but should be differentiated from AGING, a physiological process, and TIME FACTORS which refers only to the passage of time.	Age Reporting,Age Factor,Factor, Age,Factors, Age