What is a normal compliance value for the lungs
Normal lung compliance values indicate the lungs' ability to expand and contract effectively during breathing. Here's a summary of the typical values derived from various medical sources:
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Total Lung Compliance: In adult individuals, the total lung compliance is approximately 200 mL/cm H2O. This figure provides a general understanding of the lungs' ability to accommodate air when subjected to pressure changes. For specific details, you can refer to StatPearls on Pulmonary Compliance.
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Dynamic and Static Compliance: In non-intubated patients, normal lung compliance is reported to be around 100 mL/cm H2O. This value is characterized under normal physiological conditions and can vary based on a person's health state and age. More in-depth discussions can be explored in the article from Deranged Physiology.
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Variations Based on Measurement Conditions: When looking at mechanically ventilated patients, lung compliance can vary between 50 to 100 mL/cm H2O. This indicates that compliance may be lower among patients with certain respiratory conditions. More perspectives on ventilated patients can be found in resources such as LITFL and PubMed.
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Overall Health Influence: Factors like age and any underlying health issues can influence these compliance values, with an observed decline in compliance with advancing age. This is supported by research findings available on ScienceDirect.
In summary, normal lung compliance values provide critical insights into lung function, aiding in the assessment of respiratory health. Values can range from 100 to 200 mL/cm H2O, depending on the measurement context and the patient's health status.
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