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Tuberculosis in heart transplant recipients
1Division of Microbiology-Infectious Diseases, Hospital Universitario Gregorio Marañon, Madrid, Spain.
Summary
Heart transplant recipients face a significantly higher risk of developing tuberculosis, over 20 times the national average. Early diagnosis and treatment are crucial for successful outcomes in these immunocompromised patients.
Area of Science:
- Cardiology
- Infectious Diseases
- Transplantation Medicine
Background:
- Heart transplantation is a life-saving procedure for end-stage heart failure.
- Immunosuppression is essential post-transplant but increases infection risk.
- Tuberculosis (TB) remains a global health concern, particularly in endemic regions.
Observation:
- This study analyzed TB incidence in 144 heart transplant recipients over 5 years.
- Three patients developed active extrapulmonary TB, with a mean onset of 76 days post-transplant.
- All patients had prior rejection episodes and initially negative tuberculin tests.
Findings:
- The incidence of TB post-heart transplant was 1.35 cases per 100 heart transplant-years, exceeding the national average by over 20-fold.
- Clinical presentations were often mild or absent.
- Successful treatment with antituberculous chemotherapy was achieved concurrently with immunosuppressants, though drug interactions (cyclosporine-rifampin) occurred.
Implications:
- Heart transplantation is an unheralded risk factor for TB, especially in prevalent countries.
- Close monitoring for TB in heart transplant recipients is warranted.
- Further research into managing TB in this population, considering drug interactions, is needed.