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Murine Intrapulmonary Tracheal Transplantation: A Model for Investigating Obliterative Airway Disease After Lung Transplantation
06:15

Murine Intrapulmonary Tracheal Transplantation: A Model for Investigating Obliterative Airway Disease After Lung Transplantation

Published on: November 10, 2023

Bacterial and fungal pneumonias after lung transplantation

S Campos1, M Caramori, R Teixeira

  • 1Lung Transplant Group, Heart Institute (InCor) do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil. silviavcampos@uol.com.br

Transplantation Proceedings
|May 6, 2008
PubMed
Abstract

Insights

Bacterial and fungal pneumonia are common after lung transplantation, with Pseudomonas aeruginosa being the most frequent cause. Donor organisms did not impact pneumonia risk, but pre-existing colonization in patients with lung disease increased risk.

Area of Science:

  • Transplant Infectious Diseases
  • Pulmonary Medicine
  • Microbiology

Background:

  • Lung transplant recipients face significant risks of bacterial and fungal pneumonia.
  • Understanding the epidemiology and transmission of these infections is crucial for patient outcomes.

Purpose of the Study:

  • To investigate the epidemiology of bacterial and fungal pneumonia in lung transplant recipients.
  • To assess the role of donor-to-host transmission in these post-transplant infections.
  • To identify risk factors associated with pneumonia development.

Main Methods:

  • Retrospective analysis of bronchoalveolar lavage (BAL) cultures from 49 lung transplant recipients and their donors.
  • Data collected from August 2003 to April 2007.
  • Evaluation of pneumonia episodes, causative microorganisms, and pre-transplant colonization.

Main Results:

  • 108 pneumonia episodes occurred, with Pseudomonas aeruginosa (33.3%), Staphylococcus aureus (26.8%), and Aspergillus spp. (16%) being most common.
  • Pre-transplant colonization was present in 43% of recipients, particularly those with underlying suppurative lung disease.
  • An association was found between pre-transplant colonization and early post-transplant pneumonia (RR = 4.76, P = .04).
  • No significant impact of donor lung organisms on pneumonia development was observed.

Conclusions:

  • Bacterial and fungal infections are frequent complications in lung transplant recipients, contributing to mortality.
  • Pseudomonas aeruginosa is the predominant pathogen causing respiratory infections.
  • Pre-transplant colonization, especially in patients with suppurative lung disease, is a significant risk factor for early post-transplant pneumonia.

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