Q: What three simple precautions make visualization of vessel and needle optimum during ultrasound guided central venous cannulation?
1. While placing the probe into the sterile sleeve, force any air out. Air bubbles trapped between the probe and the cover may distort the vessel image on ultrasound screen.
2. Apply additional sterile lubricant gel (or povidone-iodine), between the wrapped probe and the surface of the skin. It will make images crispier.
3. Keep focus on the tip of the needle rather than the needle shaft. Visualization of needle tip can be enhanced by “rocking” the probe forward and backward. It will “flashes” the tip.