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  2. Lung volumes and capacities - Wikipedia

    en.wikipedia.org/wiki/Lung_volumes_and_capacities

    The average total lung capacity of an adult human male is about 6 litres of air. [1] Tidal breathing is normal, resting breathing; the tidal volume is the volume of air that is inhaled or exhaled in only a single such breath. The average human respiratory rate is 30–60 breaths per minute at birth, [2] decreasing to 12–20 breaths per minute ...

  3. Capnography - Wikipedia

    en.wikipedia.org/wiki/Capnography

    Low PETCO2 readings on patients may indicate hyperventilation. [ 16 ] Capnography, because it provides a breath by breath measurement of a patient's ventilation, can quickly reveal a worsening trend in a patient's condition by providing paramedics with an early warning system into a patient's respiratory status.

  4. Integrated pulmonary index - Wikipedia

    en.wikipedia.org/wiki/Integrated_Pulmonary_Index

    IPI chart. The IPI incorporates four patient parameters (end-tidal CO 2 and respiratory rate measured by capnography, as well as pulse rate and blood oxygenation SpO 2 as measured by pulse oximetry) into a single index value. [1]

  5. Air quality index - Wikipedia

    en.wikipedia.org/wiki/Air_quality_index

    Other organizations provide monitoring for members of sensitive groups such as asthmatics, children and adults over the age of 65. [52] Historical air monitoring data including AQI charts and maps are available at EPA's AirData website. [53] There is a free email subscription service for New York inhabitants – AirNYC. [54]

  6. Carbon dioxide - Wikipedia

    en.wikipedia.org/wiki/Carbon_dioxide

    The symmetry of a carbon dioxide molecule is linear and centrosymmetric at its equilibrium geometry. The length of the carbon–oxygen bond in carbon dioxide is 116.3 pm, noticeably shorter than the roughly 140 pm length of a typical single C–O bond, and shorter than most other C–O multiply bonded functional groups such as carbonyls. [19]

  7. Arterial blood gas test - Wikipedia

    en.wikipedia.org/wiki/Arterial_blood_gas_test

    An arterial blood gas (ABG) test, or arterial blood gas analysis (ABGA) measures the amounts of arterial gases, such as oxygen and carbon dioxide.An ABG test requires that a small volume of blood be drawn from the radial artery with a syringe and a thin needle, [1] but sometimes the femoral artery in the groin or another site is used.

  8. Hypercapnia - Wikipedia

    en.wikipedia.org/wiki/Hypercapnia

    Hypercapnia (from the Greek hyper, "above" or "too much" and kapnos, "smoke"), also known as hypercarbia and CO 2 retention, is a condition of abnormally elevated carbon dioxide (CO 2) levels in the blood.

  9. Ventilatory threshold - Wikipedia

    en.wikipedia.org/wiki/Ventilatory_threshold

    VT1 is thought to reflect a person's anaerobic threshold — the point at which the oxygen supplied to the muscles no longer meets its oxygen requirements at a given work rate — and therefore lactate threshold — the point at which lactate begins to accumulate in the blood, because with ongoing dependence on anaerobic glycolysis, increasing ...