What should be the next action by the nurse, once an over-the-needle catheter (ONC) has been inserted through the skin and into the vein?
a. Loosen the stylet for removal
b. Check for blood return in the flashback chamber
c. Stabilize the catheter and release the tourniquet
d. Advance the catheter until the hub rests at the insertion site
B
Observe for blood return through the flashback chamber of the catheter or the tubing of the winged cannula, indicating that the bevel of the needle has entered the vein. Lower the needle until almost flush with the skin. Advance the catheter another to inch into the vein, and then loosen the stylet site on the ONC. Only after the catheter is advanced and is in its final position is the catheter stabilized with one hand while the tourniquet is released. Only after the blood and the needle are observed to advance another to inch into the vein is the stylet loosened. At that point, continue to hold the skin taut, and advance the catheter into the vein until the hub rests at the venipuncture site.
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