
1) Vascular surgery
Found on
https://www.crosswordclues.com/clue/venous-cutdown

Venous cutdown is an emergency procedure in which the vein is exposed surgically and then a cannula is inserted into the vein under direct vision. It is used to get vascular access in trauma and hypovolemic shock patients when peripheral cannulation is difficult or impossible. The saphenous vein is most commonly used. This procedure has fallen out...
Found on
http://en.wikipedia.org/wiki/Venous_cutdown

<procedure> Creation of a small incised opening in a vein to permit the passage of a needle or cannula for withdrawal of blood, administration of medication, or in diagnostic or therapeutic catheterization. ... (12 Dec 1998) ...
Found on
http://www.encyclo.co.uk/local/20973
No exact match found.