Safe lung preservation for twenty-four hours with Perfadex

Area of Science:

• Transplantation immunology
• Thoracic surgery
• Organ preservation

Background:

• Lung transplantation is a critical treatment for end-stage lung disease.
• Optimizing organ preservation solutions and techniques is essential for successful lung allograft function.
• Evaluating the short-term viability of lung allografts is crucial for clinical application.

Purpose of the Study:

• To assess the short-term function of porcine left lung allografts after preservation and transplantation.
• To evaluate the physiological parameters of lung allografts during a 24-hour post-transplant period.
• To determine the efficacy of Perfadex as a preservation solution for lung allografts.

Main Methods:

• Six porcine left lung allografts were perfused with Perfadex and stored at 6-8°C.
• Left lung transplantation was performed, followed by right pneumonectomy, rendering animals dependent on the allograft.
• Physiological parameters including arterial blood gases and pulmonary pressures were monitored for 24 hours.

Main Results:

• All transplanted animals maintained good condition with stable arterial oxygen and carbon dioxide tensions.
• Mean pulmonary arterial pressure and pulmonary vascular resistance remained consistent throughout the observation period.
• Increasing inspired oxygen fraction to 1.0 resulted in improved arterial oxygen tension.

Conclusions:

• Porcine left lung allografts preserved in Perfadex exhibit stable function for 24 hours post-transplantation.
• The preservation and storage method using Perfadex supports immediate post-transplant allograft viability.
• Further studies are warranted to assess long-term allograft survival and function.