Correct Answer: B

Rationale: When assessing for a pulse in an unresponsive 6-month-old patient, the brachial artery is the recommended site for palpation. This is because the brachial artery is easily accessible and provides a reliable indication of the patient's circulatory status in infants.

Correct Answer: A

Rationale: Purple and yellow bruises on protected areas like the thighs are concerning as they indicate bruises in various stages of healing, which is a red flag for physical abuse. Bruises on the anterior tibial area or a child clinging to a parent are not specific signs of physical abuse. Siblings watching you is unrelated to the suspicion of physical abuse in this scenario.

Correct Answer: D

Rationale: Systolic blood pressure is the least reliable parameter when assessing perfusion status in a 2-year-old child. In young children, blood pressure measurements can be variable, affected by factors like anxiety or crying. Capillary refill time, presence of peripheral pulses, and skin color and temperature are more reliable indicators of perfusion status in this age group.

Correct Answer: C

Rationale: Inattention to the EMT's presence is a sign of altered mental status in a small child. When a child is not responsive or does not acknowledge the presence of the EMT, it could indicate a change in their mental status. This lack of attention or awareness may signify a neurological issue or other medical condition affecting the child's cognitive function.

Correct Answer: C

Rationale: In a child with increased work of breathing, a high-pitched sound during inhalation, and a high fever, upper airway obstruction should be suspected. The child's condition may require immediate ventilation assistance to ensure adequate oxygenation and ventilation. Therefore, the most immediate concern in this scenario is to assess the need for ventilation assistance.