Abstract
The tunneling technique is currently widely used for placement of CVC. Recently, some clinicians have used this technique for peripherally inserted central catheters (PICC), or Midline catheters (MCs). To describe a safe antegrade tunneling technique for PICCs and MCs insertion with a blunt tunneler. This retrospective monocentric survey collected ASST Lodi hospital data from January 1st to December 31st, 2019. The indication for PICCs and MCs tunneled implant was to respect the correct vein/catheter ratio or special clinical situation (children, burns, wounds, and wider catheter 5/6 fr). Contraindications included the operator's low skills and severe risk of bleeding (INR > 3; Platelet count <50'000). About 390 PICCs (327 4 fr and 63 5 fr) and 183 MCs were placed. One hundred and sixty-five PICCs (42%) and 110 MCs (60%) were tunneled. Five fr PICCs were more present among tunneled catheters (54/165 [32.7%] vs 9/225 [4%] p < 0.0001). In the majority tunneling was necessary to respect the correct catheter/vein ratio. The exit site was shifted only for four special clinical situations: skin infections (one PICC and two MCs); burns (one MC). No early complication (intraprocedural, major bleeding), catheter related thrombosis, or device fractures occurred. Two catheter-related bloodstream infections (one PICC, one MC), nine dislocations (four PICCs, five MCs), one MC occlusion were recorded. The antegrade tunneling technique with blunt tunneler of PICCs and MCs is simple, rapid and is regarded as a safe maneuver. More in-depth and future prospective studies are needed to evaluate the impact of tunneling on early and late complications.
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