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Updated: Aug 11, 2026

Pre-clinical Model of Cardiac Donation after Circulatory Death
Published on: August 2, 2019
[Hypothyroidism and myocardial damage in cardiac donors]
J López Haldón1, Martínez Martínez A, A Ordóñez
1Servicios de Cardiología ospital San Sebastián, Ecija, Hospital Universitario Virgen del Rocío, Sevilla. lhaldon@interbook.net
Insights
Hypothyroidism and myocardial damage are frequent in brain dead organ donors. However, this study found no correlation between these two conditions, suggesting they are independent issues.
Area of Science:
- Cardiology
- Endocrinology
- Transplantation Science
Context:
- Brain death can lead to myocardial contractile dysfunction and hypothyroidism, impacting donor heart viability.
- Myocardial damage is implicated in contractile dysfunction in brain dead donors.
- Hypothyroidism is a known contributor to cardiovascular issues in brain dead individuals.
Purpose:
- To quantify myocardial damage and thyroid status in cardiac donors.
- To analyze the potential correlation between hypothyroidism and myocardial damage in brain death.
Summary:
- Serum samples from 45 cardiac donors were analyzed for cardiac troponins (myocardial damage markers) and thyroid hormones.
- Elevated cardiac troponins were found in 42.2% of donors.
- Hypothyroidism was highly prevalent, detected in 86.7% of donors, with no observed correlation to myocardial damage markers.
Impact:
- Highlights the high incidence of both hypothyroidism and myocardial damage in brain dead donors.
- Demonstrates that hypothyroidism and myocardial damage in brain death are not associated.
- Informs transplantation protocols by clarifying the independent nature of these two common findings in organ donors.
Background And Objectives:
Brain death may induce myocardial contractile dysfunction and hypothyroidism. This myocardial dysfunction is a limiting factor when considering donor heart for transplantation. Myocardial damage has shown to be the mechanism in which contractile dysfunction is established in donors. On the other hand, hypothyroidism has been evoked as a major cause of cardiovascular disorders in brain dead subjects. It is not known whether any relationship exists between hypothyroidism and myocardial damage that appear in brain death. In this study myocardial damage and thyroid status are quantified in a donor population, and whether a correlation between hypothyroidism and myocardial damage exists is analyzed.
Patients And Method:
Serum samples from 45 cardiac donors were examined for cardiac troponins T and I as myocardial damage markers, as well as thyroid hormones. Correlations between cardiac troponins and thyroid hormones were assessed.
Results:
One or both cardiac troponins were elevated in 19 donors (42.2%). Hypothyroidism was a very frequent finding, since it was present in 39 donors (86.7%). No correlation was observed between any of the myocardial damage markers and thriiodothyronine levels.
Conclusions:
Hypothyroidism and myocardial damage are common in brain dead donors. No association exists between both disorders.
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