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Abstract:
In 39 patients with treated unresponsive pneumonia complicated by life-threatening underlying disease, direct needle aspiration of the lung was performed to establish a cause. An infectious agent was detected in 18 patients (46 percent), a nonbacterial cause was found in one, and cure of a recent infection was substantiated in six patients. An incorrect diagnosis was made in seven patients (one false-positive and six false-negative), and an indeterminant answer was obtained by needle aspiration in seven. Serious complications occurred in 11 patients, most commonly in those who had hypoxia or thrombocytopenia, but no morbidity occurred in 22 patients. The diagnostic yield allowed effective rational therapy to be selected for multiple potential pathogens in 12 patients and detected pathogens not suspected in six instances. The technique compares favorably to other invasive techniques for establishing definitive information in this group of seriously ill patients.
Insights
Direct needle aspiration of the lung diagnosed infectious agents in nearly half of critically ill patients with unresponsive pneumonia. This invasive procedure aided in selecting effective therapies and identified unexpected pathogens, proving valuable for complex cases.
Area of Science:
- Pulmonology
- Infectious Diseases
- Critical Care Medicine
Background:
- Unresponsive pneumonia in critically ill patients presents diagnostic challenges.
- Identifying the causative agent is crucial for effective treatment and improved outcomes.
- Established diagnostic methods may be insufficient for complex cases.
Purpose of the Study:
- To evaluate the diagnostic yield and safety of direct needle aspiration of the lung.
- To determine the effectiveness of this technique in guiding antimicrobial therapy for unresponsive pneumonia.
- To compare direct needle aspiration with other invasive diagnostic procedures.
Main Methods:
- Direct needle aspiration of the lung was performed in 39 patients with treated unresponsive pneumonia and life-threatening underlying conditions.
- Causative agents were identified, and diagnostic accuracy was assessed.
- Complications and impact on therapeutic decisions were recorded.
Main Results:
- An infectious agent was detected in 18 patients (46%).
- A definitive diagnosis was established in 25 patients (64%), with incorrect diagnoses in 7 (18%) and indeterminate results in 7 (18%).
- Serious complications occurred in 11 patients, primarily those with hypoxia or thrombocytopenia, while 22 patients experienced no morbidity.
Conclusions:
- Direct needle aspiration of the lung is a valuable tool for diagnosing the cause of unresponsive pneumonia in critically ill patients.
- The procedure facilitated the selection of appropriate therapy for multiple pathogens in 12 patients and identified unsuspected pathogens in 6.
- Despite potential complications, the diagnostic yield supports its use as a favorable invasive technique for seriously ill patients.