Which practice focuses on improving mouth care to prevent VAP?

• A. Head of bed elevated
• B. Oral care
• C. Hand hygiene
• D. Frequent linen changes

Answer: (B)

Focusing on mouth care targets the main source of bacteria that can cause ventilator-associated pneumonia: the oropharyngeal area. When the mouth and teeth are not well cared for, plaque and secretions harbor bacteria that can be aspirated into the lungs, especially in intubated patients. Regular oral hygiene, often with an antiseptic like chlorhexidine, lowers the bacterial load, reduces colonization of pathogenic organisms, and thereby decreases the risk that contaminated secretions reach the lower airways during microaspiration. Implementing oral care routinely—cleaning the mouth, suctioning secretions, keeping mucosa moist, and using antiseptic rinses per protocol—directly interrupts the pathway to VAP.

Elevating the head of the bed helps reduce aspiration risk in general, but it doesn’t specifically address the bacterial load in the mouth. Hand hygiene and frequent linen changes are important for overall infection control, but they don’t target oropharyngeal colonization linked to VAP as directly as thorough mouth care does.