A nurse is teaching a client about skin cancer prevention. Which of the following statements by the client indicates an understanding of the teaching?

Rationale:

A. Match the client's blood type with the type and cross match specimen: While matching blood types is important, autologous transfusions use the client’s own blood, making crossmatching less critical. This step doesn't confirm the identity of the client receiving the blood.

B. Ensure that the client's identification band matches the number on the blood unit: This is the safest and most accurate method to confirm that the blood product belongs to the correct client. The ID band and blood unit must match exactly to prevent transfusion errors.

C. Confirm the provider's prescription matches the number on the blood component: The prescription ensures the correct blood product is ordered, but it doesn't verify client identity. This step should follow positive client identification, not replace it.

D. Ask the client to state his blood type and the date of the blood donation: Clients may not recall this information accurately, and relying on verbal confirmation can lead to errors. Always verify using the ID band and blood label.

Rationale:

A. Inject into the vastus lateralis: The preferred injection sites for insulin are subcutaneous areas such as the abdomen, upper arms, thighs, or buttocks. The vastus lateralis is used for intramuscular injections, not subcutaneous insulin administration.

B. Roll the syringe gently to ensure mixture of the insulins: Only the NPH (cloudy) insulin should be rolled gently between the hands to mix it evenly before drawing it up. The syringe itself should not be rolled after both insulins are inside, as this may affect accuracy.

C. Draw up regular insulin prior to NPH insulin: When mixing insulins, regular (clear) insulin should be drawn up first to avoid contaminating the vial of regular insulin with the cloudy NPH insulin, which could alter its action and absorption.

D. Use a 15 angle for the injection: Insulin is administered subcutaneously using a 45- to 90-degree angle, depending on the client’s body habitus. A 15-degree angle is too shallow and is used for intradermal injections, not subcutaneous ones.