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  2. Spirometry - Wikipedia

    en.wikipedia.org/wiki/Spirometry

    Spirometry (meaning the measuring of breath) is the most common of the pulmonary function tests (PFTs). It measures lung function, specifically the amount (volume) and/or speed (flow) of air that can be inhaled and exhaled.

  3. Exhaled nitric oxide - Wikipedia

    en.wikipedia.org/wiki/Exhaled_nitric_oxide

    Chemical formula of nitric oxide (NO) together with its molecular size (115 pm).. In medicine, exhaled nitric oxide (eNO - now commonly known as FeNO) can be measured in a breath test for asthma and other respiratory conditions characterized by airway inflammation.

  4. Exhalation - Wikipedia

    en.wikipedia.org/wiki/Exhalation

    Spirometry is the measure of lung function. The total lung capacity (TLC), functional residual capacity (FRC), residual volume (RV), and vital capacity (VC) are all values that can be tested using this method. Spirometry is used to help detect, but not diagnose, respiratory issues like COPD, and asthma.

  5. Spirometer - Wikipedia

    en.wikipedia.org/wiki/Spirometer

    A spirometer is an apparatus for measuring the volume of air inspired and expired by the lungs.A spirometer measures ventilation, the movement of air into and out of the lungs.

  6. Respiratory quotient - Wikipedia

    en.wikipedia.org/wiki/Respiratory_quotient

    Using this quotient we could shed light on the metabolic behavior and the simultaneous roles of chemical and physical forcing that shape the biogeochemistry of aquatic ecosystems. [ 13 ] Moving from a molecular and cellular level to an ecosystem level, various processes account for the exchange of O 2 and CO 2 between the biosphere and atmosphere.

  7. Glossary of chemistry terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_chemistry_terms

    Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...

  8. Post bronchodilator test - Wikipedia

    en.wikipedia.org/wiki/Post_bronchodilator_test

    An initial spirometry is performed to assess the patient's native respiratory status. The patient will be asked to take a deep breath and then blow into the mouthpiece of the spirometer as hard as you can. This is a baseline measurement.

  9. Respirometer - Wikipedia

    en.wikipedia.org/wiki/Respirometer

    A respirometer is a device used to measure the rate of respiration [1] of a living organism by measuring its rate of exchange of oxygen and/or carbon dioxide. [2] They allow investigation into how factors such as age, or chemicals affect the rate of respiration. [3]