Underutilization of Donor Hearts: An Observational Study.

Area of Science:

• Cardiology
• Transplantation Medicine
• Organ Donation

Background:

• Donor heart utilization is limited.
• This study investigated cardiac donor rejection rates and reasons within one organ procurement organization.

Purpose of the Study:

• To determine the rate of cardiac donor rejection.
• To identify the primary reasons for donor heart non-utilization.
• To explore factors influencing heart transplantation decisions.

Main Methods:

• Observational study of cardiac donors over one year.
• Data collection included demographics, medical history, and diagnostic tests.
• Statistical analysis used Mann-Whitney U test, chi-squared test, and logistic regression.

Main Results:

• Only 39.5% of 134 adult donor hearts were transplanted.
• 46.9% of non-transplanted hearts were deemed normal based on available data.
• Coronary artery disease (31.5%) and decreased left ventricular ejection fraction (LVEF) were key reasons for rejection.
• 26 normal hearts (19.4%) were not transplanted.
• LVEF sometimes improved upon repeat echocardiography, but was often not re-evaluated.

Conclusions:

• Approximately 20% of normal donor hearts are not transplanted.
• Coronary artery disease is a common abnormality in seemingly normal hearts, suggesting broader use of coronary angiography.
• Decreased LVEF is a frequent cause for heart non-utilization, and its potential reversibility warrants repeat echocardiography to maximize transplantation.