High Incidence of Bloodstream Infection Due to Gram-negative Bacilli in Patients With Pulmonary Hypertension Receiving Intravenous Treprostinil

Autor: Elvira Barrios, Maria J. Ruiz-Cano, Pilar Escribano, María Vicente-Hernández, Mario Fernández-Ruiz, José María Aguado, Francisco López-Medrano
Rok vydání: 2012
Předmět:
Zdroj: Archivos de Bronconeumología (English Edition). 48:443-447
ISSN: 1579-2129
DOI: 10.1016/j.arbr.2012.09.008
Popis: Introduction: An excessive risk for bacteremia has recently been reported in patients with pulmonary arterial hypertension (PAH) treated with intravenous treprostinil. We aimed to assess this association in a cohort of patients from a Spanish referral center. Patients and methods: We performed a retrospective cohort study that included 55 patients diagnosed with PAH who received a continuous intravenous infusion of a prostanoid (epoprostenol or treprostinil) for ≥ 1. month at our center between January 1991 and December 2011. The risk factors associated with the incidence of bacteremia were analyzed with the log-rank test. Results: After a total follow-up of 64,453 treatment days, we found 12 episodes of bacteremia: Staphylococcus aureus (5 episodes), non-fermenting gram-negative bacilli (4 episodes), other gram-positive cocci (2 episodes), and Enterobacter cloacae (one episode). The incidence of bacteremia was 0.118 episodes per 1,000 treatment days in patients receiving epoprostenol versus 0.938 episodes per 1,000 treatment-days in patients receiving treprostinil (P=0037). All episodes of bacteremia due to Gram-negative bacilli were diagnosed in patients on treprostinil. In the univariate analysis the treatment with intravenous treprostinil was associated with the incidence of bacteremia (hazard ratio: 4.09; 95% confidence interval: 1.24-14.53), although the low number of events prevented us from performing a multivariate analysis. Conclusions: Therapy with intravenous treprostinil is associated with a higher risk for bacteremia, especially due to non-fermenting Gram-negative bacilli. This association should be taken in consideration when choosing empirical antibiotic therapy for patients with PAH and sepsis. © 2012 SEPAR.
Databáze: OpenAIRE