Intermediate
Technical
IVT
sheathless
A catheterization technique where catheters are inserted directly through the arterial puncture without an introducer sheath.
Full Definition
Sheathless catheterization involves direct insertion of catheters through the arterial access site without using an introducer sheath. This technique, particularly popular in transradial access, reduces the effective catheter size, minimizes vessel trauma, and may decrease bleeding complications. Sheathless systems typically incorporate hydrophilic coatings and specialized dilators to facilitate smooth catheter insertion and manipulation. The technique requires specific training and may offer advantages in patients with small radial arteries.
Usage
Usage note: Hyphenation not required; use as single word adjective.
In Context
- "A sheathless guiding catheter was used to minimize radial artery trauma." — Transradial procedure note
- "The sheathless technique allowed use of larger guide catheters through small radial arteries." — Technical innovation description
Also known as
sheath-free
direct catheter insertion
Contrasted with
sheathed technique
conventional access
Don't confuse with
slender sheath
small-bore access