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Clinical Presentation, Timing, and Microbiology of CIED Infections: An Analysis of the WRAP-IT Trial

  • M. Rizwan Sohail
  • , G. Ralph Corey
  • , Bruce L. Wilkoff
  • , Jeanne E. Poole
  • , Suneet Mittal
  • , Charles Kennergren
  • , Arnold J. Greenspon
  • , Alan Cheng
  • , Jeffrey D. Lande
  • , Daniel R. Lexcen
  • , Khaldoun G. Tarakji

Research output: Contribution to journal › Article › peer-review

Abstract

Objectives: This study characterized the microbiology of major cardiac implantable electronic device (CIED) infections that occurred during the WRAP-IT (Worldwide Randomized Antibiotic Envelope Infection Prevention Trial) study. Background: The WRAP-IT study offers a unique opportunity for further understanding of the pathogens involved in major CIED infections in a prospective dataset, with implications for clinical practice and infection management. Methods: A total of 6,800 patients randomized 1:1 to receive an antibacterial envelope or not (control subjects) were included in this analysis. Patient characteristics, infection manifestation (pocket vs. systemic), and infection microbiology were evaluated through all follow-up (36 months). Data were analyzed using Cox proportional hazards regression. Results: A total of 3,371 patients received an envelope, and 3,429 patients were control subjects. Major CIED infection occurred in 32 patients who received an envelope and 51 control subjects (36-month Kaplan-Meier estimated event rate, 1.3% and 1.9%, respectively; p = 0.046). A 61% reduction in major pocket infection was observed within 12 months of the procedure in the envelope group (hazard ratio: 0.39, 95% confidence interval: 0.21 to 0.73; p = 0.003). Among 76 patients with major infections who had a sample taken, causative pathogens were identified in 47 patients. Staphylococcus species were the predominate pathogen (n = 31) and envelope use resulted in a 76% reduction in Staphylococcus-related pocket infections (n = 4 vs. 17; p = 0.010). Envelope use was not associated with delayed onset of pocket infections and did not affect the presentation of infections. Conclusions: Antibacterial envelope use resulted in a significant reduction of major CIED pocket infections and was particularly effective against Staphylococcus species, the predominant cause of pocket infections. (Worldwide Randomized Antibiotic Envelope Infection Prevention Trial [WRAP-IT]; NCT02277990)

Original languageEnglish (US)
Pages (from-to)50-61
Number of pages12
JournalJACC: Clinical Electrophysiology
Volume7
Issue number1
DOIs
StatePublished - Jan 2021
Externally publishedYes

Keywords

  • Staphylococcus
  • cardiac implantable electronic device (CIED)
  • infection
  • microbiology
  • pathogens

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)

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