[Aspiration in a specialised weaning unit--an underestimated problem].

Area of Science:

• Pulmonology and Critical Care Medicine
• Gastroenterology
• Otolaryngology

Context:

• Aspiration post-tracheal cannula removal is a significant concern for patients undergoing long-term mechanical ventilation (LTMV).
• Understanding the incidence and risk factors for aspiration is crucial for improving patient outcomes in weaning units.

Purpose:

• To investigate the incidence of aspiration in patients immediately following tracheal cannula removal.
• To identify potential demographic, clinical, or laboratory factors associated with aspiration in this patient population.

Summary:

• A retrospective case series of 82 LTMV patients demonstrated a 45% aspiration rate post-tracheal cannula removal, confirmed by blue dye visualization during bronchoscopy.
• No statistically significant differences were found in age, gender, comorbidities, ventilation duration, or key laboratory parameters (Hb, CO2, HCO3, CRP) between patients with and without aspiration.
• While Kaplan-Meier curves suggested a divergence in outcomes, statistical analysis (Log Rank Test, Cox Regression) did not reach significance, possibly due to a low event rate.

Impact:

• Highlights a high incidence of aspiration, emphasizing the need for careful monitoring and potential interventions post-extubation.
• Suggests that aspiration, despite not being statistically linked to the studied factors, may indicate a trend towards increased mortality, warranting further investigation.
• Underscores the need for larger, prospective studies to confirm aspiration as a prognostic marker and to explore its multidimensional impact on patient recovery.