Addressing silicone ventriculoperitoneal shunt hypersensitivity with teflon sheets: a case report

Abstract

Ventriculoperitoneal (VP) shunts, used to treat hydrocephalus, can sometimes cause hypersensitivity reactions to silicone, necessitating repeated surgical interventions. Traditional management involves replacing silicone with alternatives like polyurethane, which have limitations. This study presents a novel approach using Teflon (PTFE) sheets to cover the silicone valve surface. A 22-year-old male with a history of multiple shunt surgeries and wound revisions was admitted for wound dehiscence, suspected to be due to a late hypersensitivity reaction to silicone. The shunt valve and cranial entry point were wrapped in Teflon PTFE felt sheets, and the wound was closed with propylene sutures. The patient was treated with methylprednisolone and discharged after three days. Follow-up showed complete wound healing within a month, and the patient remained revision-free for ten years. This case suggests that Teflon sheets may offer a promising approach for managing silicone hypersensitivity in VP shunts, though further studies are needed to determine its broader applicability.