Does selective digestive decontamination prevent ventilator-associated pneumonia in trauma patients?

Area of Science:

• Critical Care Medicine
• Infectious Diseases
• Trauma Surgery

Background:

• Ventilator-associated pneumonia (VAP) poses a significant risk in trauma patients.
• The effectiveness of selective digestive decontamination (SDD) for VAP prevention in this population remains under-investigated.

Purpose of the Study:

• To evaluate the efficacy of SDD in preventing VAP in multiple trauma patients requiring prolonged mechanical ventilation (MV).

Main Methods:

• A randomized, double-blind, placebo-controlled study involving 44 multiple trauma patients requiring MV >48 hours.
• Patients were assigned to four groups receiving different combinations of topical (subglottic and gastric) and intravenous antibiotic treatments.
• Treatment involved a 7-day course of topical suspension and a 4-day course of intravenous cefotaxime.

Main Results:

• VAP incidence rates were 45.5% (SDD + IV), 46.2% (placebo), 22.2% (gastric SDD only), and 27.3% (subglottic SDD only).
• No significant difference in VAP incidence was observed between the groups (P=0.236).
• Multivariate analysis identified prolonged MV duration as the sole independent predictor of VAP onset (OR=1.1; 95% CI [1.1-1.4]; P=0.049).

Conclusions:

• SDD, in the tested regimens, did not demonstrate a protective effect against VAP in multiple trauma patients.
• Prolonged mechanical ventilation is a critical risk factor for VAP development in this patient cohort.