Correct Answer: A

Rationale: A rapid antigen detection test is the appropriate diagnostic test for suspected streptococcal pharyngitis. This test is commonly used due to its quick results, helping in the prompt diagnosis and appropriate treatment of the condition. It specifically detects the presence of streptococcal antigens in the throat, aiding in confirming the diagnosis and guiding the healthcare provider in determining the most suitable treatment plan.

Correct Answer: A

Rationale: In a 7-year-old child with an acute asthma exacerbation showing signs of wheezing and increased work of breathing, the priority intervention for the nurse is to administer a nebulized bronchodilator immediately. Bronchodilators help dilate the airways, relieve bronchospasm, and improve breathing, which is crucial in managing an acute asthma attack and preventing further respiratory distress.

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: D

Rationale: Positioning the infant on the stomach occasionally when awake and active can help prevent flat spots on the head.

Correct Answer: A

Rationale: In a child presenting with ear pain and fever, asking if the child has had a runny nose is crucial in assessing for possible ear infection causes. Respiratory infections can lead to secondary ear infections, so exploring symptoms related to upper respiratory tract infections, like a runny nose, can help in the evaluation and management of the child's condition.