A nurse is providing preoperative teaching to an older adult female client who is scheduled for a laminectomy and uses supplements. Which of the following supplements should the nurse identify as increasing the client's risk for hypotension during surgery?

A. Draw up regular insulin prior to NPH insulin. This is the correct technique when mixing short-acting (regular) and intermediate-acting (NPH) insulins in the same syringe. Drawing up regular insulin first prevents contamination of the clear insulin vial with the cloudy NPH, which could alter the action of the regular insulin.
B. Roll the syringe gently to ensure mixture of the insulins. Insulin should be mixed in the vial before drawing it into the syringe—not after. NPH insulin should be gently rolled between the hands to mix it, but the syringe itself should not be rolled after drawing both insulins, as this can introduce bubbles and affect dosing accuracy.
C. Inject into the vastus lateralis. The preferred sites for subcutaneous insulin administration are areas with sufficient subcutaneous tissue, such as the abdomen, upper outer arms, thighs, or buttocks. The vastus lateralis is more commonly used for intramuscular injections, such as vaccines.
D. Use a 15° angle for the injection. A 15° angle is appropriate for intradermal injections, not subcutaneous insulin injections. For insulin, the correct angle is typically 45° or 90°, depending on the client’s body habitus and needle length, to ensure proper subcutaneous delivery.

A. The stoma appears dark purple in color. This is a priority finding, as it may indicate impaired circulation or necrosis of the stoma tissue. A healthy stoma should appear pink or red and moist. A dark purple or black color requires immediate evaluation.
B. The colostomy has had no output. While it is important to monitor output, it is not unusual for a new colostomy to have minimal or no output in the first 24–48 hours post-op as bowel function returns.
C. The client refuses to look at the colostomy. This is a psychosocial concern and may indicate body image issues or denial, but it is not the most urgent issue in the immediate postoperative period.
D. The client reports a pain level of 6 on a scale from 0 to 10. Pain management is important, but a pain level of 6, while needing intervention, does not take priority over a potential vascular compromise of the stoma.