spirometer

spirometer
In clinical practice and research, any device used for measuring flows and volumes, inspired and expired by the lungs, thus assessing pulmonary function. Considered the most basic measurement device of pulmonary function. [L. spiro, to breathe, + G. metron, measure]
- chain-compensated s. a Tissot s. in which compensation for change in bell buoyancy is accomplished automatically by a suspending chain of correct mass per unit length.
- Krogh s. a water-sealed s. in which the bell is a large, shallow, rectangular box rotating slightly around a horizontal axis extending along one edge, with an arm extending beyond that axis to a counterbalancing weight; comparable with a wedge s..
- Tissot s. a very large water-sealed s. designed for accumulating expired gas over a long period of time; the counterbalancing of the bell (almost frictionless) is compensated for by the bell's change in buoyancy as it emerges from the water, keeping the contained gas precisely at ambient atmospheric pressure.
- wedge s. a waterless s. constructed of two large rectangular plates with edges connected by accordion-pleated rubber so that large changes in volume are accommodated by small changes in the acute angle of the wedge-shaped interior, sensed by an electrical transducer; designed for rapid response by reducing the acceleration of the moving parts.

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spi·rom·e·ter spi-'räm-ət-ər n an instrument for measuring the air entering and leaving the lungs
spi·ro·met·ric .spī-rə-'me-trik adj

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n.
an instrument for measuring the volume of air inhaled and exhaled. It is used in tests of ventilation.
spirometry n.

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spi·rom·e·ter (spi-romґə-tər) [spiro-2 + -meter] an instrument for measuring the air inhaled into and exhaled from the lungs, such as in pulmonary function tests.

Medical dictionary. 2011.

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Look at other dictionaries:

  • Spirometer — (n) eng spirometer …   Arbeitssicherheit und Gesundheitsschutz Glossar

  • Spirometer — Spi*rom e*ter, n. [L. spirare to breathe + meter.] 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}. [1913 Webster] …   The Collaborative International Dictionary of English

  • Spirometer — Spirometer, s. Tafel »Apparate zur Atmungsphysiologie«, S. I (beim Artikel »Atmung«) …   Meyers Großes Konversations-Lexikon

  • Spirometer — Spiromēter (lat. grch.), Atemmesser, gasometerartiger Apparat aus zwei Zylindergefäßen mit Skala, gibt nach Ausatmung in den Apparat den Luftgehalt der Lungen an. Spirometrīe, Bestimmung der eingeatmeten Luftmenge mittels S …   Kleines Konversations-Lexikon

  • spirometer — 1846, formed irregularly from L. spirare to breathe (see SPIRIT (Cf. spirit)) + METER (Cf. meter). Related: Spirometry …   Etymology dictionary

  • spirometer — [spī räm′ət ər] n. [ SPIRO 1 + METER] an instrument for measuring the breathing capacity of the lungs spirometric [spīrə mə′trik] adj. spirometry [spīräm′ə trē] n …   English World dictionary

  • Spirometer — A spirometer is an apparatus for measuring the volume of air inspired and expired by the lungs. It is a precision differential pressure transducer for the measurements of respiration flow rates. The spirometer records the amount of air and the… …   Wikipedia

  • Spirometer — Funktionelles Grundprinzip eines Spirometers Darstellung Spiromete …   Deutsch Wikipedia

  • Spirometer — spirometras statusas T sritis Standartizacija ir metrologija apibrėžtis Plaučių įkvepiamo (arba iškvepiamo) oro tūrio matuoklis. atitikmenys: angl. spirometer vok. Atmungsmesser, m; Pneumonometer, n; Spirometer, n rus. спирометр, m pranc.… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • spirometer — spirometras statusas T sritis Standartizacija ir metrologija apibrėžtis Plaučių įkvepiamo (arba iškvepiamo) oro tūrio matuoklis. atitikmenys: angl. spirometer vok. Atmungsmesser, m; Pneumonometer, n; Spirometer, n rus. спирометр, m pranc.… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • Spirometer — spirometras statusas T sritis fizika atitikmenys: angl. spirometer vok. Pneumonometer, n; Spirometer, n rus. спирометр, m pranc. spiromètre, m …   Fizikos terminų žodynas

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