NOT a recommended VAP prevention measure?

• A. Elevate the head of the bed to 30-45 degrees
• B. Oral care with chlorhexidine
• C. Subglottic secretion drainage
• D. Change ventilator circuit routinely every 24 hours

Answer: (D)

Preventing VAP relies on interventions that limit aspiration and reduce airway colonization while keeping the ventilator circuit as a closed, stable system. Elevating the head of the bed to 30-45 degrees helps prevent aspiration of gastric contents. Oral care with chlorhexidine lowers the burden of oral bacteria that can be aspirated. Subglottic secretion drainage removes secretions that accumulate above the endotracheal cuff, cutting down on secretions that can leak into the lower airways. In contrast, changing the ventilator circuit routinely every 24 hours disrupts the closed system and does not lower VAP rates; it may actually increase contamination and instability. So routine circuit changes are not a recommended VAP prevention measure.