Correct Answer: A

Rationale: In a patient transitioning to an insulin pump, understanding the quality control process to troubleshoot the pump is essential for ensuring proper and safe management of diabetes. This knowledge enables the individual to identify and address any issues that may arise with the pump, helping maintain optimal glycemic control and prevent complications.

Correct Answer: A

Rationale: In this scenario, the nurse's priority action should be to obtain a urine sample for toxicology screening. This step is crucial in identifying the substances involved in the relapse, which will guide appropriate treatment strategies. Establishing a therapeutic relationship and discussing treatment options come after obtaining necessary diagnostic information to ensure a comprehensive care plan.

Correct Answer: A

Rationale: Children, especially young ones, benefit from knowing what position they will be in during a procedure as it helps them understand and feel more in control. Describing the side-lying, knees-to-chest position can reduce anxiety and promote cooperation during the lumbar puncture.

Correct Answer: A

Rationale: The initial step in managing an undescended testicle is to ascertain if it has been previously observed in the scrotum or if this is a new finding. This information helps in determining the appropriate course of action and further evaluation.

Correct Answer: B

Rationale: The absence of babbling in a 7-month-old infant is a concerning auditory development milestone. Babbling is an early stage of language development which involves making various sounds. A lack of babbling could indicate a hearing impairment or other auditory issues. Therefore, the practical nurse should focus on assessing the infant's auditory function to determine if further evaluation or intervention is necessary.