alexa Frequency, risk factors, and outcome for bacteremia after percutaneous transluminal coronary angioplasty
Cardiology

Cardiology

Angiology: Open Access

Author(s): Samore MH

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The objectives of this study were to examine bacteremias after percutaneous transluminal coronary angioplasty (PTCA) with respect to incidence, outcome, and risk factors. Patients undergoing PTCA from January 1990 through April 1994 were studied; during this period a total of 4,217 PTCAs were performed in 3,473 patients. With use of predefined clinical and microbiologic criteria, bacteremias were divided into 3 categories according to the relation to the PTCA procedure: PTCA-related, unrelated, and indeterminate. Ninety-one patients with at least 1 positive blood culture during a 7-week period after PTCA were identified. The bacteremia was classified as unrelated to the PTCA procedure in 32 patients, PTCA-related in 27, and indeterminant in the remaining 32 patients. The attack rate of PTCA-related bacteremia during the 52-month period was 0.64%. The most common organisms causing PTCA-related bacteremia were Staphylococcus aureus (14 patients), coagulase-negative staphylococci (9 patients) and group B streptococci (6 patients). Septic complications, which included femoral artery mycotic aneurysm, septic arthritis, and septic thrombosis, occurred in 10 patients (0.24%). Independent risk factors for PTCA-related bacteremia included duration of procedure (odds ratio [OR] 2.9; p = 0.04), number of catheterizations at the same site (OR 4.0; p = 0.015), difficult vascular access (OR 14.9; p = 0.007), arterial sheath in place > 1 day (OR 6.8; p = 0.025), congestive heart failure (OR 43.3; p = 0.002). Thus, PTCA-related bacteremia is an infrequent complication of PTCA but can be associated with significant morbidity, particularly when the infecting organism is S. aureus. Four of the 5 risk factors for PTCA-related bacteremia appear to correlate directly with increased vascular injury or maintenance of the arterial entry for the procedure.

This article was published in Am J Cardiol and referenced in Angiology: Open Access

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