Primary graft dysfunction after heart transplantation: Incidence, trends, and associated risk factors

Area of Science:

• Cardiology
• Transplantation Medicine
• Immunology

Background:

• Heart transplantation (HT) is a life-saving procedure, but primary graft dysfunction (PGD) remains a significant complication.
• Donor and recipient demographics are evolving, potentially impacting PGD incidence.

Purpose of the Study:

• To evaluate the incidence, trends, and risk factors associated with PGD in adult heart transplant recipients.
• To identify specific demographic and clinical variables linked to PGD development.

Main Methods:

• Retrospective analysis of 317 adult patients undergoing HT between January 2009 and December 2014.
• Utilized International Society for Heart & Lung Transplantation (ISHLT) criteria for PGD categorization.
• Assessed clinical and demographic factors for independent association with PGD, including time-trend analysis.

Main Results:

• PGD occurred in 31% of patients (99/317).
• Independent risk factors for PGD included prolonged ischemic time, African American race, and pretransplantation amiodarone use.
• No significant change in PGD incidence over the study period, but increased amiodarone use was noted.
• 30-day mortality was significantly higher in patients with PGD (6.06% vs. 0.92%).

Conclusions:

• PGD incidence remains high despite advancements in heart transplantation.
• Identifying and understanding risk factors like ischemic time and recipient characteristics is crucial for developing targeted interventions.
• Further research is needed to mitigate PGD and improve post-transplant outcomes.