Correct Answer: D

Rationale: Rheumatic fever can lead to cardiac complications, such as dysrhythmias. Therefore, it is essential for the nurse to monitor the child's heart rate closely for any signs of dysrhythmias. This will help in early identification and prompt management of potential cardiac issues associated with rheumatic fever.

Correct Answer: C

Rationale: Because ACE inhibitors promote venous dilation, they provide the therapeutic effect of reducing pulmonary congestion and peripheral edema. Absence of previously heard crackles would be an indicator of effectiveness. Edema and jugular vein distention are manifestations of heart failure. A potassium level of 3.5 is a normal value.

Correct Answer: A

Rationale: The correct answer is A. Lower anchors and tethers, known as the LATCH child safety seat system, should be used to secure an infant's car seat in the vehicle. This system provides a safer and more secure way of installing the car seat compared to using the seat belt alone. Using the lower anchors and tethers ensures proper installation and reduces the risk of car seat movement during travel, providing optimal protection for the infant.

Correct Answer: D

Rationale: Correct administration of ear drops includes massaging the child's ear after administering the drops to facilitate proper absorption of the medication. This action helps ensure the effectiveness of the treatment.

Correct Answer: A

Rationale: Understanding the activities, routines, and dynamics of a family is crucial for a healthcare professional to provide holistic care. By gaining insight into the family's lifestyle and relationships, the professional can tailor interventions that are better integrated into the family's daily life, fostering more effective therapy outcomes and enhancing the overall quality of care provided.