Clinical Outcomes of Heart Transplant Recipients Admitted with COVID-19 Infection in 2020: A Nationwide Analysis

Area of Science:

• Infectious Diseases
• Immunology
• Nephrology

Background:

• The COVID-19 pandemic, caused by SARS-CoV-2, led to significant morbidity and mortality, often involving cytokine release and immune dysregulation.
• Management strategies for severe COVID-19 have included immunosuppression.
• Solid-organ transplantation (SOT) recipients may have altered immune responses, potentially influencing COVID-19 outcomes.

Purpose of the Study:

• To investigate the impact of solid-organ transplantation (SOT) on the clinical course and outcomes of hospitalized COVID-19 patients.
• To compare mortality, need for mechanical ventilation, circulatory support, and renal replacement therapy between COVID-19 patients with and without SOT.

Main Methods:

• Retrospective study utilizing data from the 2020 nationwide inpatient sample (NIS).
• Multivariate analysis was performed to adjust for potential confounding factors.
• Comparison of outcomes including mortality, vasopressor use, mechanical ventilation, mechanical circulatory support, acute renal failure requiring renal replacement therapy, length of stay, and hospitalization charges.

Main Results:

• COVID-19 admissions with SOT demonstrated no significant difference in mortality compared to non-SOT admissions (11.5% vs 11.1%).
• SOT patients had lower odds of requiring mechanical ventilation (MV) (OR: 0.83) and intubation within 24 hours of admission (OR: 0.60).
• However, SOT recipients showed increased odds for mechanical circulatory support (OR: 3.7) and acute renal failure requiring renal replacement therapy (OR: 1.66), with a decreased mean length of stay (0.8 days less).

Conclusions:

• Solid-organ transplantation status did not significantly alter mortality risk in hospitalized COVID-19 patients.
• While SOT recipients were less likely to require mechanical ventilation, they faced higher risks for mechanical circulatory support and acute renal failure.
• These findings highlight the complex interplay between SOT and severe COVID-19, necessitating tailored management strategies.