Total Compliance Calculator

Calculates total compliance from lung and chest-wall compliance using reciprocal compliance.

Inputs

Color mode links each input to the matching equation term and solving arithmetic.

Equation and Work

Equation:
Solving steps:
Total compliance, CT
—
L/cmH₂O
Reciprocal sum
—
1/C
Reference note
—
intact lung-thorax
Normal/reference: With intact lung-thorax mechanics, lung and chest-wall compliance are similar and total compliance is about half either value.

Clinical Significance

Total compliance from lung and chest-wall compliance using reciprocal compliance.

This calculator expands that idea by identifying the relevant measured values, substituting the selected inputs, and carrying the arithmetic through in the solving steps.

Shows why the combined lung-thorax system has lower compliance than either the lung or chest wall alone.

Calculator output should be interpreted with the patient’s condition, measurement quality, and local clinical policy.

References (APA 7th Edition)

  1. Chang, D. W. (2020). Respiratory Care Calculations (Revised 4th ed.). Jones & Bartlett Learning. Formula content adapted from the uploaded text/reference packet.