Upper Extremity Infections in the Transplant Population

Area of Science:

• Transplantation immunology
• Infectious diseases
• Clinical risk assessment

Background:

• Increasing survival rates after organ transplantation necessitate understanding long-term complications.
• Long-term immunosuppression in transplant recipients elevates the risk of opportunistic and rare infections.
• Upper extremity infections represent a significant, yet understudied, clinical challenge in this population.

Purpose of the Study:

• To investigate the clinical risk profile of upper extremity infections in organ transplant recipients.
• To analyze the management strategies and outcomes associated with these infections.
• To identify factors influencing the timing and characteristics of upper extremity infections post-transplantation.

Main Methods:

• Retrospective analysis of an institutional database of 16,640 organ transplant patients from 2005 to 2017.
• Inclusion criteria: patients experiencing infections of the upper extremity (shoulder to fingertips).
• Statistical analysis using multivariable linear and logistic regression modeling to identify risk factors and outcomes.

Main Results:

• 230 patients developed upper extremity infections, with a mean age of 54.1 years, occurring 7.9 years post-transplant.
• Commonly affected organs were kidney (51.3%) and liver (20%); infections most frequently occurred on the forearm (31.7%) and digits (27.4%).
• Cellulitis (69.1%) and abscess (33.5%) were the most prevalent infection types; factors like antifungal use, joint infection, and transplant type influenced hospital stay and time to infection.

Conclusions:

• Upper extremity infections in transplant patients exhibit significant heterogeneity.
• Treatment and evaluation must be individualized, considering transplant type, immunosuppression regimen, patient age, and infection specifics.
• Identifying specific risk factors can help predict and potentially mitigate infection development and severity.