(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).
Spirometry
Definition:
(n.) The act or process of measuring the chest capacity by means of a spirometer.
Example Sentences:
(1) Spirometry and lung volumes, diffusing capacity of carbon monoxide, chest radiograph, methacholine airway challenge, and bronchoalveolar lavage were done.
(2) A second period of treadmill exercise, of the same level and duration, was then performed, and blood sampling and spirometry were repeated at the same time intervals after the end of exercise.
(3) In the still active mine workers, dynamic spirometry results showed no difference between smokers or nonsmokers or between underground and surface workers.
(4) In this study, therefore, we measured hypercapnic ventilatory responsiveness (HCVR) and spirometry in 13 healthy male subjects (18 to 30 yr of age) after two consecutive nights of severe sleep fragmentation (arousal to an auditory stimulus after each minute of sleep) and compared the results with those obtained in the same subjects after normal sleep.
(5) Ten normal subjects and 10 patients with obstructive lung disease performed spirometry at the same time of day and in randomized order.
(6) No difference was noted in results of spirometry, peak flow readings or side effects between the devices.
(7) Baseline lung function, cross-shift, and cross-week spirometry were not significantly worse in the exposed group as compared to the control group.
(8) Dynamic spirometry with flow-volume curves and measurement of static lung volumes in a body plethysmograph were done in 11 patients with reversible airways obstruction before and up to 240 min after inhalation of 20 mug SCH 1000 and of another 40 mug 60 min later.
(9) Spirometry was measured at entry and at 30-min intervals following the first drug and at the same times after the second drug.
(10) Before certain types of surgery pulmonary function testing is indicated; if the spirometry and diffusing capacity tests are normal, there is no pulmonary contraindication for the planned surgery.
(11) Thirty-eight adults performed spirometry and N2 washout to determine functional residual capacity preoperatively and 2, 24, 48, and 72 hours after extubation.
(12) With 30 minutes intervals and up to three hours after drug administration, the symptoms were observed and spirometry was carried out.
(13) Preoperative values of spirometry do not provide a clue for survival rates.
(14) No effect on spirometry or body temperature was detected.
(15) We conclude that flow-volume loops and spirometry are helpful in assessing the site and nature of malignant large airway obstructive processes and, moreover, provide reliable information for evaluating the efficacy of laser photoresection.
(16) Although there were correlations between spirometry and the two nitrogen wash-out techniques, a large scatter precluded the use of the flow-volume variables to predict CC, CV% and VTG.
(17) Patients were followed up for changes in medical treatment, spirometry, skin reactivity to immediate type reactions, total serum IgE levels and reactivity of their leukocytes to leukotriene C4 challenge (LTC4 induced leukocyte adherence inhibition (LAI) assay).
(18) Testing included a respiratory questionnaire, spirometry, and the single-breath N2 test.
(19) Spirometry, total lung capacity (TLC), diffusing capacity (Dco), static lung compliance (Cst), and tests of respiratory muscle function (peak inspiratory pressure [PIP] and the maximum change in transdiaphragmatic pressure [delta PDI] during a diaphragmatic Müeller maneuver) were obtained.
(20) Testing consisted of spirometry, lung auscultation, and measurement of vital signs.