Effectiveness of an aspiration risk-reduction protocol.

Area of Science:

• Critical Care Medicine
• Gastroenterology
• Pulmonology

Background:

• Aspiration of gastric contents poses a significant risk to critically ill patients on mechanical ventilation and tube feedings.
• Preventing aspiration is crucial for reducing complications such as pneumonia in this vulnerable patient population.

Purpose of the Study:

• To evaluate the effectiveness of a multi-component intervention designed to mitigate aspiration risk.
• To assess the impact of the Aspiration Risk-Reduction Protocol (ARRP) on aspiration and pneumonia incidence.

Main Methods:

• A quasi-experimental design compared a usual care group (n=329) with an Aspiration Risk-Reduction Protocol (ARRP) group (n=145).
• The ARRP included head-of-bed elevation (≥30°), small-bowel feeding tube placement, and an algorithm for high gastric residual volumes.
• Incidence of aspiration and pneumonia was compared between the two groups.

Main Results:

• The ARRP group demonstrated significantly higher rates of head-of-bed elevation (≈90%) and small-bowel feeding tube placement (≈75%) compared to the usual care group.
• Aspiration incidence was substantially lower in the ARRP group (39%) versus the usual care group (88%).
• Pneumonia incidence was also markedly reduced in the ARRP group (19%) compared to the usual care group (48%).

Conclusions:

• Combining head-of-bed elevation (≥30°) with small-bowel feeding tube placement effectively reduces aspiration and related pneumonia in critically ill, tube-fed patients.
• The findings support the implementation of structured protocols to manage aspiration risk in intensive care settings.