Hostname: page-component-848d4c4894-xm8r8 Total loading time: 0 Render date: 2024-07-01T05:32:39.908Z Has data issue: false hasContentIssue false

Ventilator-Associated Pneumonia at a Tertiary-Care Center in a Developing Country: Incidence, Microbiology, and Susceptibility Patterns of Isolated Microorganisms

Published online by Cambridge University Press:  02 January 2015

Zeina A. Kanafani
Affiliation:
Department of Medicine, Division of Infectious Diseases, Beirut, Lebanon
Layla Kara
Affiliation:
School of Pharmacy, Lebanese American University, Beirut, Lebanon
Shady Hayek
Affiliation:
Department of Surgery, American University of Beirut Medical Center, Beirut, Lebanon
Souha S. Kanj*
Affiliation:
Department of Medicine, Division of Infectious Diseases, Beirut, Lebanon
*
Medicine, Head, Division of Infectious Diseases, Department of Medicine, American University of Beirut Medical Center, P.O. Box 113-6044, Hamra 110 32090, Beirut, Lebanon

Abstract

Objective:

Ventilator-associated pneumonia (VAP) complicates the course of up to 24% of intubated patients. Data from the Middle East are scarce. The objective of this study was to evaluate the incidence, microbiology, and antimicrobial susceptibility patterns of isolated microorganisms in VAP in a developing country.

Design:

Prospective observational cohort study.

Setting:

The American University of Beirut Medical Center, a tertiary-care center that serves as a major referral center for Lebanon and neighboring countries.

Patients:

All patients admitted to the intensive care and respiratory care units from March to September 2001, and who had been receiving mechanical ventilation for at least 48 hours, were included in the study. Results of samples submitted for culture were recorded and antimicrobial susceptibility testing of isolated pathogens was performed.

Results:

Seventy patients were entered into the study. The incidence of VAP was 47%. Gram-negative bacilli accounted for 83% of all isolates. The most commonly identified organism was Acinetobacter anitratus, followed by Pseudomonas aeruginosa. Fifty percent of all gram-negative bacterial isolates were classified as antibiotic resistant. Compared with patients without VAP, patients with VAP remained intubated for a longer period and stayed in the intensive care unit longer. VAP was not associated with an increased mortality rate.

Conclusion:

Compared with other studies, the results from this referral center in Lebanon indicate a higher incidence of VAP and a high prevalence of resistant organisms. These data are relevant because they direct the choice of empiric antibiotic therapy for VAP.

Type
Original Articles
Copyright
Copyright © The Society for Healthcare Epidemiology of America 2003

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Centers for Disease Control and Prevention. Guidelines for prevention of nosocomial pneumonia. MMWR 1997;46:179.Google Scholar
2. Craven, DE, Steger, KA, Barber, TW. Preventing nosocomial pneumonia: state of the art and perspectives for the 1990s. Am J Med 1991;91:44S53S.CrossRefGoogle ScholarPubMed
3. Richards, MJ, Edwards, JR, Culver, DH, Gaynes, RP. Nosocomial infections in medical intensive care units in the United States: National Nosocomial Infections Surveillance System. Crit Care Med 1999;27:887892.CrossRefGoogle ScholarPubMed
4. Rowe, S, Cheadle, WG. Complications of nosocomial pneumonia in the surgical patient. Am J Surg 2000;179:6368.Google Scholar
5. Brown, DL, Hungness, ES, Campbell, RS, Luchette, FA. Ventilator-associated pneumonia in the surgical intensive care unit. J Trauma 2001;51:12071216.Google Scholar
6. Morehead, RS, Pinto, SJ. Ventilator-associated pneumonia. Arch Intern Med 2000;160:19261936.Google Scholar
7. Cook, DJ, Walter, SD, Cook, RJ, et al. Incidence of and risk factors for ventilator-associated pneumonia in critically ill patients. Ann Intern Med 1998;129:433440.Google Scholar
8. Chastre, J, Fagon, JY. Ventilator-associated pneumonia. Am J Respir Crit Care Med 2002;165:867903.Google Scholar
9. Rello, J, Sa-Borges, M, Correa, H, Leal, SR, Baraibar, J. Variations in etiology of ventilator-associated pneumonia across four treatment sites: implications for antimicrobial prescribing practices. Am J Respir Crit Care Med 1999;160:608613.Google Scholar
10. National Committee for Clinical Laboratory Standards. Performance Standards for Antimicrobial Susceptibility Testing. Wayne, PA National Committee for Clinical Laboratory Standards; 2001.Google Scholar
11. Garner, JS, Jarvis, WR, Emori, TG, Horan, TC, Hughes, JM. CDC definitions for nosocomial infections, 1988. Am J Infect Control 1988;16:128140.Google Scholar
12. Anonymous. Hospital-acquired pneumonia in adults: diagnosis, assessment of severity, initial antimicrobial therapy, and preventive strategies. A consensus statement, American Thoracic Society, November 1995. Am J Respir Crit Care Med 1996;153:17111725.Google Scholar
13. Minei, JP, Hawkins, K, Moody, B, et al. Alternative case definitions of ventilator-associated pneumonia identify different patients in a surgical intensive care unit. Shock 2000;14:331337.CrossRefGoogle Scholar
14. Mayhall, CG. Nosocomial pneumonia: diagnosis and prevention. Infect Dis Clin North Am 1997;11:427457.CrossRefGoogle ScholarPubMed
15. Bruchhaus, JD, McEachern, R, Campbell, GD Jr. Hospital-acquired pneumonia: recent advances in diagnosis, microbiology and treatment. Curr Opin Pulm Med 1998;4:180184.Google Scholar
16. Pittet, D, Bonten, MJ. Towards invasive diagnostic techniques as standard management of ventilator-associated pneumonia. Lancet 2000;356:874.Google Scholar
17. Dormer, AL, Lutwick, LI. Pulmonary infections in ventilated patients: diagnostic and therapeutic options. Current Infectious Diseases Reports 2000;2:231237.CrossRefGoogle ScholarPubMed
18. Kirtland, SH, Corley, DE, Winterbauer, RH, et al. The diagnosis of ventilator-associated pneumonia: a comparison of histologic, microbiologic, and clinical criteria. Chest 1997;112:445457.CrossRefGoogle ScholarPubMed
19. Grossman, RF, Fein, A. Evidence-based assessment of diagnostic tests for ventilator-associated pneumonia: executive summary. Chest 2000;117:177S181S.Google Scholar
20. Torres, A, Carlet, J. Ventilator-associated pneumonia: European Task Force on ventilator-associated pneumonia. Eur Respir J 2001;17:10341045.Google Scholar
21. Vincent, JL, Bihari, DJ, Suter, PM, et al. The prevalence of nosocomial infection in intensive care units in Europe: results of the European Prevalence of Infection in Intensive Care (EPIC) study. JAMA 1995;274:639644.CrossRefGoogle ScholarPubMed
22. Khuri-Bulos, NA, Shennak, M, Agabi, S, et al. Nosocomial infections in the intensive care units at a university hospital in a developing country: comparison with National Nosocomial Infections Surveillance intensive care unit rates. Am J Infect Control 1999;27:547552.Google Scholar
23. Memish, ZA, Cunningham, G, Oni, GA Djazmati, W. The incidence and risk factors of ventilator-associated pneumonia in a Riyadh hospital. Infect Control Hosp Epidemiol 2000;21:271273.CrossRefGoogle Scholar
24. Finkelstein, R, Rabino, G, Kassis, I, Mahamid, I. Device-associated, device-day infection rates in an Israeli adult general intensive care unit. J Hosp Infect 2000;44:200205.Google Scholar
25. National Nosocomial Infections Surveillance (NNIS) System report: data summary from January 1992-June 2001, issued August 2001. Am J Infect Control 2001;29:404421.Google Scholar
26. Fagon, JY, Chastre, J, Wolff, M, et al. Invasive and noninvasive strategies for management of suspected ventilator-associated pneumonia: a randomized trial. Ann Intern Med 2000;132:621630.Google Scholar
27. Niederman, MS, Torres, A Summer, W. Invasive diagnostic testing is not needed routinely to manage suspected ventilator-associated pneumonia. Am J Respir Crit Care Med 1994;150:565569.CrossRefGoogle Scholar
28. Marquette, CH, Georges, H, Wallet, F, et al. Diagnostic efficiency of endotracheal aspirates with quantitative bacterial cultures in intubated patients with suspected pneumonia: comparison with the protected specimen brush. Am Rev Respir Dis 1993;148:138144.Google Scholar
29. Marquette, CH, Copin, MC, Wallet, F, et al. Diagnostic tests for pneumonia in ventilated patients: prospective evaluation of diagnostic accuracy using histology as a diagnostic gold standard. Am J Respir Crit Care Med 1995;151:18781888.CrossRefGoogle ScholarPubMed
30. Kollef, MH. Ventilator-associated pneumonia: a multivariate analysis. JAMA 1993;270:19651970.CrossRefGoogle ScholarPubMed
31. Papazian, L, Bregeon, F, Thirion, X, et al. Effect of ventilator-associated pneumonia on mortality and morbidity. Am J Respir Crit Care Med 1996;154:9197.Google Scholar
32. Sofianou, DC, Constandinidis, TC, Yannacou, M, Anastasiou, H, Sofianos, E. Analysis of risk factors for ventilator-associated pneumonia in a mul-tidisciplinary intensive care unit. Eur J Clin Microbiol Infect Dis 2000;19:460463.Google Scholar
33. Richards, MJ, Edwards, JR, Culver, DH, Gaynes, RP. Nosocomial infections in combined medical-surgical intensive care units in the United States. Infect Control Hosp Epidemiol 2000;21:510515.Google Scholar
34. Spencer, RC. Predominant pathogens found in the European Prevalence of Infection in Intensive Care study. Eur J Clin Microbiol Infect Dis 1996;15:281285.Google Scholar
35. Combes, A, Figliolini, C, Trouillet, JL, et al. Incidence and outcome of polymicrobial ventilator-associated pneumonia. Chest 2002;121:16181623.Google Scholar
36. Trouillet, JL, Chastre, J, Vuagnat, A et al. Ventilator-associated pneumonia caused by potentially drug-resistant bacteria. Am J Respir Crit Care Med 1998;157:531539.CrossRefGoogle ScholarPubMed
37. Araj, GF, Kanj, SS. Current status and changing trends of antimicrobial resistance in Lebanon. J Med Liban 2000;48:221226.Google Scholar
38. Fridkin, SK, Gaynes, RP. Antimicrobial resistance in intensive care units. Clin Chest Med 1999;20:303316.Google Scholar
39. Fridkin, SK Increasing prevalence of antimicrobial resistance in intensive care units. Crit Care Med 2001;29:N64N68.CrossRefGoogle ScholarPubMed
40. Gruson, D, Hilbert, G, Vargas, F, et al. Rotation and restricted use of antibiotics in a medical intensive care unit: impact on the incidence of ventilator-associated pneumonia caused by antibiotic-resistant gram-negative bacteria. Am J Respir Crit Care Med 2000;162:837843.Google Scholar
41. Kollef, MH, Vlasnik, J, Sharpless, L, Pasque, C, Murphy, D, Fraser, V. Scheduled change of antibiotic classes: a strategy to decrease the incidence of ventilator-associated pneumonia. Am J Respir Crit Care Med 1997;156:10401048.Google Scholar
42. Archibald, L, Phillips, L, Monnet, D, McGowan, JE Jr, Tenover, F, Gaynes, R. Antimicrobial resistance in isolates from inpatients and outpatients in the United States: increasing importance of the intensive care unit. Clin Infect Dis 1997;24:211215.Google Scholar
43. Fagon, JY, Chastre, J, Domart, Y, et al. Nosocomial pneumonia in patients receiving continuous mechanical ventilation: prospective analysis of 52 episodes with use of a protected specimen brush and quantitative culture techniques. Am Rev Respir Dis 1989;139:877884.CrossRefGoogle ScholarPubMed
44. Antonelli, M, Moro, ML, Capelli, O, et al. Risk factors for early onset pneumonia in trauma patients. Chest 1994;105:224228.CrossRefGoogle ScholarPubMed
45. Tillotson, JR, Finland, M. Secondary pulmonary infections following antibiotic therapy for primary bacterial pneumonia. Antimicrob Agents Chemother 1968;8:326330.Google Scholar
46. Jarvis, WR, Edwards, JR, Culver, DH, et al. Nosocomial infection rates in adult and pediatric intensive care units in the United States: National Nosocomial Infections Surveillance System. Am J Med 1991;91:185S191S.Google Scholar
47. Rello, J, Ausina, V, Ricart, M, Castella, J, Prats, G. Impact of previous antimicrobial therapy on the etiology and outcome of ventilator-associated pneumonia. Chest 1993;104:12301235.Google Scholar
48. Jimenez, P, Torres, A Rodriguez-Roisin, R, et al. Incidence and etiology of pneumonia acquired during mechanical ventilation. Crit Care Med 1989;17:882885.Google Scholar
49. Heyland, DK, Cook, DJ, Griffith, L, Keenan, SP, Brun-Buisson, C. The attributable morbidity and mortality of ventilator-associated pneumonia in the critically ill patient: the Canadian Critical Trials Group. Am J Respir Crit Care Med 1999;159:12491256.Google Scholar
50. Bregeon, F, Ciais, V, Carret, V, et al. Is ventilator-associated pneumonia an independent risk factor for death? Anesthesiology 2001;94:554560.Google Scholar
51. Kollef, MH, Silver, P, Murphy, DM, Trovillion, E. The effect of late-onset ventilator-associated pneumonia in determining patient mortality. Chest 1995;108:16551662.Google Scholar