Difference between revisions of "Static versus Dynamic Compliance"
Louise Wen (talk | contribs) (Created Article on Static vs Dynamic Compliance) |
Chris Rishel (talk | contribs) m (Added images to article) |
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The following defines compliance in an equation form: | The following defines compliance in an equation form: | ||
[[File:Compliance Formula.png|frameless]] | |||
Where | Where | ||
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ΔP = change in pleural pressure | ΔP = change in pleural pressure | ||
[[File:Pressure Volume Loop.png|frameless]] | |||
In a high compliance state, a minimal increase in pressure translates to a large increase in volume. In a low compliance state, a large increase in pressure translates to only a minimal increase in volume. | In a high compliance state, a minimal increase in pressure translates to a large increase in volume. In a low compliance state, a large increase in pressure translates to only a minimal increase in volume. | ||
===Static Compliance=== | === Static Compliance=== | ||
Static compliance characterizes pulmonary compliance at the level of the alveoli when there is no active airflow, such as at the beginning or end of a breath. | Static compliance characterizes pulmonary compliance at the level of the alveoli when there is no active airflow, such as at the beginning or end of a breath. | ||
The following defines static compliance in an equation form, where static compliance is the tidal volume divided by the '''''plateau''''' pressure minus the positive end expiratory pressure (PEEP). | The following defines static compliance in an equation form, where static compliance is the tidal volume divided by the '''''plateau''''' pressure minus the positive end expiratory pressure (PEEP). | ||
[[File:Static Compliance.png|frameless]] | |||
Examples of medical conditions that primarily affect static compliance: pneumonia, pneumothorax, acute respiratory distress syndrome (ARDS), pulmonary fibrosis, pulmonary edema, pneumonectomy, and emphysema. | Examples of medical conditions that primarily affect static compliance: pneumonia, pneumothorax, acute respiratory distress syndrome (ARDS), pulmonary fibrosis, pulmonary edema, pneumonectomy, and emphysema. | ||
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The following defines dynamic compliance in an equation form, where dynamic compliance is the tidal volume divided by the '''''peak''''' pressure minus the positive end expiratory pressure (PEEP). | The following defines dynamic compliance in an equation form, where dynamic compliance is the tidal volume divided by the '''''peak''''' pressure minus the positive end expiratory pressure (PEEP). | ||
[[File:Dynamic Compliance.png|frameless]] | |||
Examples of medical conditions that primarily affect dynamic compliance: asthma, tachypnea, mucus plug, foreign body, and bronchitis. | Examples of medical conditions that primarily affect dynamic compliance: asthma, tachypnea, mucus plug, foreign body, and bronchitis. | ||
=== YouTube Video Reviewing Static vs Dynamic Compliance === | === YouTube Video Reviewing Static vs Dynamic Compliance=== | ||
{{#ev:youtube|https://www.youtube.com/watch?v=6q-OV1F3TE0&t=655s|1000|right|frame}} | {{#ev:youtube|https://www.youtube.com/watch?v=6q-OV1F3TE0&t=655s|1000|right|frame}} | ||
<references /> | <references /> | ||
Latest revision as of 14:13, 11 July 2024
Lung Compliance[1]
Compliance answers the question “How easily will an elastic structure stretch?” or “What is the elastic resistance of a system?”
The following defines compliance in an equation form:
Where
ΔV = change in volume
ΔP = change in pleural pressure
In a high compliance state, a minimal increase in pressure translates to a large increase in volume. In a low compliance state, a large increase in pressure translates to only a minimal increase in volume.
Static Compliance
Static compliance characterizes pulmonary compliance at the level of the alveoli when there is no active airflow, such as at the beginning or end of a breath.
The following defines static compliance in an equation form, where static compliance is the tidal volume divided by the plateau pressure minus the positive end expiratory pressure (PEEP).
Examples of medical conditions that primarily affect static compliance: pneumonia, pneumothorax, acute respiratory distress syndrome (ARDS), pulmonary fibrosis, pulmonary edema, pneumonectomy, and emphysema.
Dynamic Compliance
Dynamic compliance characterizes pulmonary compliance at the level of the alveoli during active airflow during the inspiratory and expiratory phases of a breath.
The following defines dynamic compliance in an equation form, where dynamic compliance is the tidal volume divided by the peak pressure minus the positive end expiratory pressure (PEEP).
Examples of medical conditions that primarily affect dynamic compliance: asthma, tachypnea, mucus plug, foreign body, and bronchitis.
YouTube Video Reviewing Static vs Dynamic Compliance
- ↑ Desai, Jay P.; Moustarah, Fady (2024), "Pulmonary Compliance", StatPearls, Treasure Island (FL): StatPearls Publishing, PMID 30855908, retrieved 2024-07-09
Top contributors: Louise Wen and Chris Rishel