Key result
Medtronic TYRX antibacterial envelope linked to rare recurrent hypersensitivity rash over a CIED.
Case Report (n=1)
This case highlights a rare hypersensitivity reaction (recurrent rash) associated with the use of antibacterial envelopes in CIED procedures.
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May signal rare TYRX hypersensitivity in recurrent CIED rash; single case leaves open true incidence and practice implications.
Cardiac implantable electronic device (CIED) infections can result in serious complications, including endocarditis, sepsis, and increased mortality, often necessitating complete removal of the CIED system1,2. The Medtronic TYRX™ absorbable antibacterial envelope, impregnated with rifampin and minocycline, provides local antimicrobial activity for approximately 7 to 10 days post-implantation. It is used to mitigate infection risks and stabilize the device, particularly in high-risk patients3,4,5, such as those undergoing device replacement (e.g., ICD or CRT-D generator changes) or upgrades, individuals with diabetes or end-stage renal disease, immunocompromised patients, those with a history of prior CIED infections, and cases involving prolonged procedure times or complex implants6.
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Fernández-Sánchez et al. (2025) conducted a case report in Antibacterial envelope hypersensitivity (n=1). Medtronic TYRX absorbable antibacterial envelope was evaluated. A rare case of recurrent rash over a cardiac implantable electronic device was identified as hypersensitivity to the Medtronic TYRX absorbable antibacterial envelope.
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