(n.) An instrument for measuring the amount of force exerted by the lungs in respiration.
Example Sentences:
Spirometer
Definition:
(n.) An instrument for measuring the vital capacity of the lungs, or the volume of air which can be expelled from the chest after the deepest possible inspiration. Cf. Pneumatometer.
Example Sentences:
(1) Bench testing for accuracy of volume loss was checked by ventilating the device into another calibrated spirometer and achieving equal volumes.
(2) Five acceptable forced expiratory maneuvers were obtained with a portable spirometer from each person in a population of 1,670 selected from a stratified random sample of a community.
(3) A model originally designed to fit population growth data was investigated to determine whether it could fit spirometric traces as a function of time in normal and ill humans and in normal rats, obtained, respectively, by spirometer and whole-body plethysmography.
(4) We observed, that under controlled ventilation the expiration valve of the circle system "8 ISO" did not close and rebreathing occurred, as the spirometer run counterclockwise.
(5) With increasing altitude PEF as measured by the spirometer increased linearly with decreasing pressure, so that at a barometric pressure of 380 mm Hg* (half an atmosphere, corresponding to an altitude of 5455 m) there was a 20% increase over sea level values.
(6) Water-sealed spirometer (Harvard), dry bellow wedge spirometer (Vitalograph) and computerized pneumotachograph (Gould), all of them satisfying the ATS recommendations were compared.
(7) After volume determination, the O2 and CO2 content of the collected air is determined in analysers connected to the displacement spirometer.
(8) The performance of a new turbine spirometer, which has several advantages over equipment previously used to measure lung function, was compared with that of a conventional spirometer (Vitalograph) in a cross-over trial on 368 children six to 11 years old.
(9) The apparatus (Oscillaire) was connected with a spirometer forming a closed respiratory circuit in which gas concentrations were kept constant.
(10) We measured the changes in FRC with nasal CPAP and ESAP using the weighted spirometer technique.
(11) Waveforms from the American Thoracic Society's spirometer testing set were used to drive a computer-controlled syringe.
(12) A great difference could not be found in escape rate from the nasal cavity between before and after insertion of prostheses, but there was a remarkable change in the spirometer.
(13) Measurements of lung compliance (C(L)) and total pulmonary resistance (R(L)) were made in 10 women in the last trimester of pregnancy and 2 months postpartum, employing an esophageal balloon and recording spirometer.
(14) Ventilation was measured with a spirometer or with a pneumatic thoracic transducer: an accordion shaped balloon, strapped around the thorax.
(15) The trapped gas can be rapidly released and returned to the spirometer.
(16) Pulmonary Function tests were measured in 261 healthy boys and 254 healthy girls in the age group of 6 to 15 years with standard Benidects Roth type recording spirometer and Wrights Peak Flow Meter.
(17) In 28 healthy newborn infants (median age 3.5 days), we compared the weighted spirometer (WS) with the multiple occlusion (MO) method for measuring respiratory system compliance (Crs).
(18) All examinations were performed with a half--open dry bellows spirometer.
(19) PEF values in 475 healthy children (age 9-15 years, 138 females, 337 males) measured with a Vitalograph meter and an automatic spirometer SA-02 were compared.
(20) Biological calibration of the Hewlett-Packard electronic spirometer against a Stead-Wells 13.5-litre spirometer shows a good concordance for forced vital capacity (FVC; systematic error 0% in women, 1% in men, probable error 4% in both sexes).