Confirmation of intravenous location
Several techniques can help to confirm that the needle is not in an artery – usually the carotid. While pulsatility and a bright red color are good hints, they are not foolproof.
· If ultrasound guidance was used to place the catheter (as is routine at our insti-tution), use it to confirm position as well.
· Attach a length of sterile clear tubing to the needle hub and lower the end, allowing it to fill several centimeters with blood, then raise above the patient’s heart level. A rising column of pulsating blood confirms arterial location, while a column that reflects the central venous pressure is a more welcome finding.