1. IT
  2. |
  3. EN

VENTILATION ASSOCIATED PNEUMONIA (VAP) IN ACUTE HOSPITALS 

Ventilator-Associated Pneumonia (VAP) is a nosocomial infection occurring in patients who have been mechanically ventilated for at least 48 hours, with an incidence of approximately 30% [1,2].It represents a critical complication in intensive care units, and is associated with male sex, smoking, and a high APACHE II score, while antibiotic prophylaxis appears to have a protective effect [1]. Diagnosis is based on pathogen detection tests and clinical signs [3], although prevention remains essential [4].Effective preventive strategies include oral hygiene [5,6], subglottic secretion aspiration, and early mobilization. The use of chlorhexidine for oral decontamination is not recommended [7–8], whereas oxidizing and saline solutions have shown promising results [5].A 45° head-of-bed elevation reduces the risk of VAP, but in neurological patients a 30° elevation is preferable [9]. Silver-coated endotracheal tubes may reduce the risk of VAP, although further studies are needed [10].Enteral nutrition delivered via naso-intestinal tubes and abdominal massage may help reduce VAP incidence [11,12]. Candida colonization in ventilated patients is common and may influence clinical prognosis [13].Inhaled antibiotics, such as colistin, can reduce VAP without increasing antimicrobial resistance [14]. Early tracheostomy may shorten the length of hospital stay, although its impact on VAP remains uncertain [15].Endotracheal cuff pressure monitoring and the use of endotracheal tubes with subglottic secretion drainage improve prevention [16].Probiotics may be beneficial, although definitive evidence is still lacking [17].Finally, care bundles represent effective tools for VAP prevention, although additional studies are needed to optimize their implementation [18,19].

 
 
References

[1] Li, J. et al. (2024). Prediction models for the risk of ventilator-associated pneumonia in patients on mechanical ventilation: A systematic review and meta-analysis. American journal of infection control52(12), 1438–1451. 
[2] Papazian, L et al.. (2020). Ventilator-associated pneumonia in adults: a narrative review. Intensive care medicine46(5), 888–906. 
[3] Frondelius, T. et al. (2022). Diagnostic and prognostic prediction models in ventilator-associated pneumonia: Systematic review and meta-analysis of prediction modelling studies. Journal of critical care67, 44–56.
[4]  Cotoia, A. et al. (2020). Pathogenesis-Targeted Preventive Strategies for Multidrug Resistant Ventilator-Associated Pneumonia: A Narrative Review. Microorganisms8(6), 821. 
[5] He, Q. et al. Effect of different mouthwashes on ventilator-related outcomes and mortality in intensive care unit patients: A network meta-analysisAustralian critical care : official journal of the Confederation of Australian Critical Care Nurses38(1), 101095. 
[6] Ehrenzeller, S et al. (2024). Association Between Daily Toothbrushing and Hospital-Acquired Pneumonia: A Systematic Review and Meta-Analysis. JAMA internal medicine184(2), 131–142. 
[7] De Cassai, A. et al.  (2024). Chlorhexidine is not effective at any concentration in preventing ventilator-associated pneumonia: a systematic review and network meta-analysis. Journal of anesthesia, analgesia and critical care4(1), 30.
[8] Klompas, M. et al.. (2022). Strategies to prevent ventilator-associated pneumonia, ventilator-associated events, and nonventilator hospital-acquired pneumonia in acute-care hospitals: 2022 Update. Infection control and hospital epidemiology43(6), 687–713. 
[9] Mohammad, E. B et al. (2024). Oral Care and Positioning to Prevent Ventilator-Associated Pneumonia: A Systematic Review. SAGE open nursing10, 23779608241271699. 
[10] de Mendonça Bisneto, O. et al.  (2024). Conventional endotracheal tubes versus polymer-coated tubes in ventilator-associated pneumonia development: A systematic review and meta-analysis. Heliyon11(1), e40793. 
[11] Liu, C. et al. (2025). Naso-intestinal versus gastric tube for enteral nutrition in patients undergoing mechanical ventilation: a systematic review and meta-analysis. Systematic reviews, 14(1), 13.  [12] Şimşek, H. et al. (2024). Effect of abdominal massage in preventing ventilator-associated pneumonia in patients connected to mechanical ventilators: A systematic review. Nursing in critical care29(6), 1535–1544.
[13] Liu, Y et al.. (2025). Effects of Candida colonization on patients with ventilator-associated pneumonia and pathogenic microorganisms: Systematic review and meta-analysisDiagnostic microbiology and infectious disease111(1), 116580. 
[14] Hsu, W. H et al.. (2024). The preventive effect of inhaled antibiotic against ventilator-associated pneumonia: A systematic review and meta-analysis. International journal of antimicrobial agents64(5), 107324. 
[15] Merola, R., et al. (2024). Timing of Tracheostomy in ICU Patients: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Life (Basel, Switzerland)14(9), 1165. 
[16] Wu, Y. et al. (2024). Continuous Versus Intermittent Control Cuff Pressure for Preventing Ventilator-Associated Pneumonia: An Updated Meta-Analysis. Journal of intensive care medicine39(9), 829–839.
[17] Anvarifard, P. et al.  (2024). The effectiveness of probiotics as an adjunct therapy in patients under mechanical ventilation: an umbrella systematic review and meta-analysisFood & function15(11), 5737–5751. 
[18] Hill, B. et al.  (2024). Infection prevention and control: critical strategies for nursing practiceBritish journal of nursing (Mark Allen Publishing)33(17), 804–811. 
[19] Sebastiani, E et al.. (2024). Identifying the Bundle/Care Development Process in Clinical Risk Management: A Systematic Review. Healthcare (Basel, Switzerland)12(22), 2242. 


 
For further readings
 

Research Studies and Reviews

 

GUIDELINES AND REFERENCE STANDARDS

 

[Last update February 2025]

Content and updates curated by Eva Cappelli