What is the purpose of postural drainage?

Postural drainage is a therapeutic technique used primarily to help clear mucus from the lungs. The main purpose is to facilitate expectoration of mucous secretions by positioning the patient in a way that allows gravity to assist in moving mucus from the smaller airways to the larger bronchi, where it can be more easily coughed out. By using specific positions, different parts of the lungs can be targeted, improving drainage and reducing the risk of infections. This technique is particularly beneficial for patients with respiratory conditions that produce excessive secretions, as it helps maintain optimal lung function and clears the airways.

Strength training exercises, lung strengthing, and increasing blood circulation in the lungs are not primary goals of postural drainage. Although these aspects can contribute to overall pulmonary health, they do not directly address the primary function of helping patients clear mucus from their airways.