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. 2023 Jan 9;13:1041952. doi: 10.3389/fneur.2022.1041952

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Copyright © 2023 Falcone and Chen.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Stepwise placement at bedside through a Quad Lumen Bolt (Hemedex, Cambridge, US). (A) A small incision is made at the location of desired probe placement to minimize skin trauma. (B) A standard twist drill is used to drill a burr hole. The size of the drill bit depends on which bolt is being used and is typically included in the Bolt kit. (C) A durotomy is made using an 11 blade or 18-gauge needle. (D) The bolt is screwed into the burr hole. It should be deep enough to be firmly attached to the bone. (E) The sensor introducer is advanced through the desired bolt lumen where it is secured to the luer fitting and (F) the stylet is removed. (G) The microdialysis catheter is then advanced and (H) secured to the introducer. (I) After placement of microdialysis catheters, other monitors may be placed though the additional lumen if desired.