Equipment for Femoral Vein Cannulation, US-Guided Sterile procedure, barrier protection Antiseptic solution (eg, chlorhexidine - alcohol, chlorhexidine, povidone iodine, alcohol) Large sterile drapes, towels Sterile head caps, masks, gowns, gloves Face shields Ultrasound guidance Ultrasound machine with a high-frequency (eg, 5 to 10 MHz), linear array probe (transducer) Ultrasound gel, nonsterile and sterile Sterile probe cover to ensheathe probe and probe cord, sterile rubber bands (alternatively, the probe may be placed within a sterile glove and the cord wrapped within a sterile drape) Seldinger (catheter-over-guidewire) technique Cardiac monitor Local anesthetic (eg, 1% lidocaine without epinephrine, about 5 mL) Small anesthetic needle (eg, 25 to 27 gauge, about 1 inch [3 cm] long) Large anesthetic / finder * needle (22 gauge, about 1.5 inches [4 cm] long) Introducer needle (eg, thin-walled, 18 or 16 gauge, with internally beveled hub, about 2.5 inches [6 cm] long) 3 - and 5-mL syringes (use slip-tip syringes for the introducer needle) Guidewire, J-tipped Scalpel (#11 blade) Dilator Central venous catheter (adult: 8 French or larger, minimum length for femoral catheter is 24 cm) Sterile gauze (eg, 4 × 4 inch [10 × 10 cm] squares) Sterile saline for flushing catheter port or ports Nonabsorbable nylon or silk suture (eg, 3 - 0 or 4 - 0) Chlorhexidine patch, transparent occlusive dressing * A finder needle is a thinner needle used for locating the vein before inserting the introducer needle.