A nurse is preparing to perform a heel stick using a spring-loaded automatic puncture device on a 1-week-old infant. In which of the following locations should the nurse puncture the infant's foot? (You will find hot spots to select in the artwork below. Select only the hot spot that corresponds to your answer.)

A. Crushing sustained-release tablets is not recommended because it can alter the medication's intended effect, releasing it all at once, which can be dangerous for the child.

B. Allowing medications to flow into the tube by gravity is the correct method. It ensures the medication is delivered slowly and effectively, preventing the tube from clogging and ensuring proper absorption.

C. Flushing the tube with 2 mL of sterile water is insufficient after all medications are administered. Typically, the tube should be flushed with 15-30 mL of water before and after medication administration to ensure patency.

D. Mixing all medications together is not recommended because different medications may have incompatible properties, and mixing them could alter their effectiveness or cause adverse reactions. Each medication should be administered separately.

A. The posterior iliac crest is the typical site for bone marrow aspiration in children. Placing the child in the prone position allows for proper access to the site while ensuring the child remains safe and stable during the procedure.

B. Positioning the child side-lying would expose the vertebrae but is not an optimal position for accessing the iliac crest for bone marrow aspiration.

C. The frog-like position (supine with legs flexed outward) is not an appropriate position for a bone marrow aspiration, as it does not provide the best access to the iliac crest or posterior iliac crest.

D. Sitting with the buttocks at the edge of the table would not adequately expose the posterior iliac crest, making it unsuitable for bone marrow aspiration.