53 Pseudomonas Pneumonia


image Clinical Presentation

28-year-old quadriplegic ventilator-dependent man with fever, chills, and purulent sputum production

image Radiologic Findings

PA (Fig. 53.1A) and lateral (Fig. 53.1B) chest X-rays demonstrate non-segmental right lower lobe consolidation without associated volume loss and an ipsilateral pleural effusion. Note the tracheostomy device. Sputum and blood cultures confirmed the diagnosis.

image Diagnosis

Pseudomonas Pneumonia

image Differential Diagnosis

Community-Acquired Pneumonia

Staphylococcus aureus

• Group A Streptococci

Klebsiella pneumoniae


Fig. 53.1

Opportunistic Pneumonia

Escherichia coli

Proteus sp.


Serratia marcescens

image Discussion


Pseudomonas may cause either bacteremic or non-bacteremic pneumonia. Bacteremic infection is acquired through breaks in the skin, the gastrointestinal mucosa, or respiratory tract, and most often occurs in patients with underlying hematologic or lymphoreticular malignancies, HIV-AIDS, immunosuppression, neutropenia, debilitation, or severe burns. Non-bacteremic infection is usually acquired through aspiration of infected oropharyngeal secretions. Risk factors for non-bacteremic Pseudomonas infection include advanced age, debilitation, chronic cardiopulmonary disease, COPD patients receiving steroids, cystic fibrosis, diffuse panbronchiolitis, and contaminated respiratory therapy equipment.


Pseudomonas sp. is ubiquitous and survives in water, vegetation, and soil. Infection may result from exposure to contaminated hot tubs, whirlpools, vegetables, flowers, nails, and splinters. Because of resistance to many disinfectants, it is a common cause of nosocomial infection. In fact, P. aeruginosa

Stay updated, free articles. Join our Telegram channel

Jan 14, 2016 | Posted by in RESPIRATORY IMAGING | Comments Off on 53 Pseudomonas Pneumonia

Full access? Get Clinical Tree

Get Clinical Tree app for offline access