Elastic work

Definition

Elastic work is the energy expended during breathing to overcome the elastic resistance of the lungs and chest wall. It involves stretching and recoiling of these structures to facilitate air movement in and out of the lungs.

5 Must Know Facts For Your Next Test

1. Elastic work increases when lung compliance decreases, making it harder to inflate the lungs.
2. Conditions such as pulmonary fibrosis can elevate elastic work due to stiffened lung tissues.
3. Surfactant reduces surface tension in the alveoli, thereby decreasing elastic work required for breathing.
4. During inspiration, elastic work is stored as potential energy in the stretched lung tissues, which is then released during expiration.
5. Measuring elastic work can provide insights into the mechanical properties of a patient's respiratory system.

Related terms

Lung Compliance: A measure of how easily the lungs can be inflated; higher compliance means less effort needed.

Pulmonary Fibrosis: A condition characterized by scarring and stiffening of lung tissue, leading to increased elastic work.

Surfactant:

A substance that reduces surface tension within the alveoli, aiding in easier lung expansion.