Results 321 to 330 of about 5,335,329 (375)

The Vital Capacity of the Negro Child

The American Journal of the Medical Sciences, 1927
The purpose of this study is to ascertain the vital capacity of a group of normal negro children and compare these vital capacities with those of a group of white children living in the same territory. The negro child forms an integral part of our population and must be considered in any health program. It has been shown that negro children are heavier
Frank L. Roberts, James A. Crabtree
openaire   +4 more sources

The influence of smoking habits and body weight on vital capacity and FEV1 in male Air Force personnel: a longitudinal and cross-sectional analysis.

American Review of Respiratory Disease, 2015
Vital capacity (VC) and forced expiratory volume in one second (FEV1) measured in 7,123 men during annual or biennial medical examination were analyzed as a function of age (A), weight (W), and standing height (H).
J. Bande, J. Clement, K. V. D. Woestijne
semanticscholar   +1 more source

BASAL METABOLISM AND VITAL CAPACITY

Archives of Internal Medicine, 1924
It is often observed that patients affected by exophthalmic goiter have a decreased vital capacity, and in taking the vital capacity of a number of such patients we noted that in several instances patients with the high basal metabolic rates had a relatively lower vital capacity than those with low metabolic rates.
Herman J. Moersch, Willis S. Lemon
openaire   +2 more sources

Calibration of time derivatives of forced vital capacity by explosive decompression.

American Review of Respiratory Disease, 2015
A simple, portable, inexpensive device is described that simulates expiratory flow curves for calibration of spirometers. A 4-L metal cylinder filled with copper mesh is fitted with a precision manometer.
M. L. Petusevsky, L. D. Lyons, A. A. Smith, G. Epler, E. Gaensler   +4 more
semanticscholar   +1 more source

A Timed Vital Capacity Recording Device

Diseases of the Chest, 1960
An instrument is presented which records multiple Timed Vital Capacity measurements in a form that may be readily interpreted.
openaire   +3 more sources

The timing of the forced vital capacity.

The American review of respiratory disease, 1979
Based on analysis of more than 2,500 forced vital capacity (FVC) maneuvers, we examined 2 aspects of the standards for spirometry recommended by the 1977 Snowbird Workshop concerning the timing of the FVC maneuver. We compared the forced expiratory volume in one sec (FEV1) when timing was initiated by the back extrapolation method with FEV1 when timing
Ronald C. Slatin, Michael D. Lebowitz, Ronald J. Knudson   +2 more
openaire   +3 more sources

A portable, adjustable forced vital capacity simulator for routine spirometer calibration.

American Review of Respiratory Disease, 2015
A new, portable calibrating device for verification of spirometer accuracy was tested. The instrument produces a volume-time spirogram similar to an exponential curve.
H. Glindmeyer, S. Anderson, R. Kern, J. Hughes   +3 more
semanticscholar   +1 more source

Venous Pressure and Vital Capacity

Annals of Internal Medicine, 1930
Excerpt Methods for estimating the normal vital capacity without actual measurement have been varied.
Edgar V. Allen, Max Hochrein
openaire   +2 more sources

Effect of thoracic gas compression on the flow-volume curve of the forced vital capacity.

American Review of Respiratory Disease, 2015
Boyle's law states that the volume of any gas varies inversely as the pressure to which it is subjected, i.e., gas is compressible. A common application of Boyle's law is the plethysmographic determination of thoracic gas volume (1).
R. Ingram, D. Schilder
semanticscholar   +1 more source

FACTORS INFLUENCING VITAL CAPACITY

Archives of Internal Medicine, 1924
Various considerations regarding vital capacity, as observed in a study of 225 men and 238 women at the Mayo Clinic, have already been presented. It became apparent that certain more general factors were repeated with such constancy that they must be considered in the interpretation of all estimations. Our observations regarding the relative importance
Willis S. Lemon, Herman J. Moersch
openaire   +2 more sources