What mechanism of action should be included in teaching about docusate sodium?

Docusate sodium is a surfactant laxative that works primarily by reducing the surface tension of stools. This mechanism allows water and fats to penetrate the stool, which helps to soften it and makes it easier to pass. By altering the consistency of the stool, docusate sodium effectively aids in preventing and treating constipation, making it an important option, particularly in patients who may experience difficulty with bowel movements due to factors such as medication use or conditions that affect mobility.

Other options describe different types of laxatives or mechanisms that do not apply to docusate sodium. For instance, stimulating intestinal motility is characteristic of stimulant laxatives, while causing rectal contractions relates more to certain other types of laxatives. Furthermore, acting as a fiber agent involves bulk-forming laxatives that absorb water and increase stool bulk, which does not represent the action of docusate sodium. Focusing on the correct mechanism provides a clearer understanding of how this medication works in clinical practice.