There's two types of CVCs, tunnelled and non-tunnelled: Non-tunnelled catheter access is for brief-time period access (up to about 2 weeks) and the catheter emerges straight from the pores and skin at the site of entry into the vein. The tunnel acts being a barrier to invading bacteria. Though identified as https://josuermzlv.wiki-jp.com/1369222/the_basic_principles_of_types_of_dialysis_access_singapore