LP101939-9
Physiological dead space
Active
Description
The physiological dead space is the volume of gas in the respiratory system that is not involved in respiratory gas exchange. It includes both alveolar and anatomical dead space. Alveolar dead space is the volume of alveoli that are ventilated but not perfused (or underperfused), and anatomical dead space is the volume of the respiratory system from the nose and mouth to the level of the distal airways at which gas exchange begins to take place.
Physiological dead space can be calculated using Bohr's equation:
Vd/Vt = (PaCO2−PeCO2)/PaCO2.
Vd is the dead space volume
Vt is tidal volume
PaCO2 is arterial partial pressure of CO2
PeCO2 is the partial pressure of CO2 in expired gas
Source: Regenstrief LOINC
Basic Part Properties
- Part Display Name
- Physiological dead space
- Part Type
- Component (Describes the core component or analyte measured)
- Created On
- 2010-10-04
- Construct for LOINC Short Name
- Phys dead space
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Language Variants Get Info
| Tag | Language | Translation |
|---|---|---|
| zh-CN | Chinese (China) | 生理死腔 Synonyms: 生理性死腔; |
| it-IT | Italian (Italy) | Spazio morto fisiologico |
| ru-RU | Russian (Russian Federation) | Физиологическое мёртвое пространство |
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