Epidemiology and clinical impact of infection in patients awaiting heart transplantation

Abstract

Objectives: The aim of this study was to determine the epidemiology and clinical impact of infections in patients awaiting heart transplantation.

Methods: We evaluated all patients considered for a heart transplant in our center over a period of 18 months over a period of 18 months from 2007 to 2009. The patients were followed up for 8 months or until death, transplant, or loss to follow-up.

Results: Ninety patients were included in the study. During follow-up, 25 infections were recorded in 22 heart transplant candidates (24.4%). Respiratory infections were the most frequent infection (12 bronchitis; 48.0%), followed by skin and soft tissue infections (four infections; 16.0%), intra-abdominal infections (four infectious diarrhea; 16.0%), bacteremia (three infections; 12.0%), and urinary tract infections (two infections; 2.0%). Age, comorbidity, sex, and diabetes were not found to be risk factors for infection. Twenty-four patients (26.7%) were transplanted during follow-up. Infection before transplantation was not associated with an increased risk of mortality or a higher rate of infection in the immediate post-transplant period.

Conclusions: Infections are common in heart transplant candidates, affecting almost 25% of them. Respiratory tract infections are the most frequent type of infection. However, they are not associated with increased mortality in the immediate post-transplant period.

Keywords: Heart transplantation; Infection; Waiting list.