Which needle and technique is most appropriate for a subcutaneous insulin injection in an average-size adult?

Giải thích

Subcutaneous injections use a short, fine needle, commonly 25 to 27 gauge and about 5/8 inch, inserted at 45 degrees or at 90 degrees when there is ample subcutaneous tissue. An 18 gauge, 2 inch needle is far too large and long and would enter muscle. A 15-degree or 10-degree bevel-down approach places medication in or above the dermis rather than the subcutaneous layer.