Reasons for Donor Lungs Unsuitability After Radiographic Selection

Area of Science:

• Medicine
• Pulmonology
• Transplantation

Background:

• Deceased lung donation is vital for treating end-stage lung disease.
• Donor lung viability is significantly influenced by the donor's disease progression and critical care management.
• Optimizing donor care is essential to maximize lung suitability for transplantation.

Purpose of the Study:

• To identify the primary causes of lung unsuitability in deceased organ donors.
• To analyze factors leading to lung rejection during both primary and secondary evaluation stages.
• To inform strategies for improving lung donor pool size.

Main Methods:

• Retrospective analysis of 1020 potential deceased organ donors from 2012-2017.
• Primary evaluation included chest radiography, oxygen challenge tests, and clinical/historical assessment.
• Secondary evaluation involved fiberoptic bronchoscopy for lungs passing initial screening.

Main Results:

• Low oxygen challenge results (42.5%) and abnormal chest radiographs (38%) were the leading causes for primary lung unsuitability.
• Purulent secretions observed during bronchoscopy (23%) were the main reason for secondary lung rejection.
• Only 47.2% of donors undergoing bronchoscopy were ultimately selected for lung donation.

Conclusions:

• Preventing respiratory infections in intensive care units is critical.
• Reducing instances of purulent secretions in the tracheobronchial tree can enhance lung donor suitability.
• Implementing targeted interventions is necessary to expand the deceased lung donor pool.