Correct Answer: C

Rationale: In a conscious trauma patient with a suspected head injury, maintaining cervical spine immobilization is crucial. The presence of a head injury raises concerns for potential concomitant cervical spine injury. Therefore, it is vital to prevent any movement of the cervical spine to avoid exacerbating a potential spinal cord injury. Maintaining immobilization involves stabilizing the patient's head and neck in a neutral position until appropriate imaging studies can assess the extent of any spinal injury. This action helps prevent further harm and ensures the safety of the patient during assessment and management of their injuries.

Correct Answer: D

Rationale: In the scenario described, the patient is presenting with severe symptoms of acute exacerbation of asthma, including severe dyspnea, accessory muscle use, and inability to speak in full sentences. In such cases, the most appropriate intervention for assessing the severity of the asthma exacerbation and guiding management decisions is a clinical assessment using standardized severity scores.

Correct Answer: B

Rationale: The past medical history section typically includes information about a person's medical background before the current point in time. This would involve details such as prenatal history, birth history, childhood illnesses, surgeries, and medical conditions that have occurred in the past. "Current history" would be more appropriate for the present medical status and ongoing health issues, hence it does not belong in the past medical history section.

Correct Answer: A

Rationale: The patient's presentation of fatigue, weakness, jaundice, elevated indirect bilirubin levels, reticulocytosis, and positive Coombs test is consistent with hemolytic anemia. Among the options provided, hereditary spherocytosis is the most likely condition to cause these findings.

Correct Answer: A

Rationale: After activating the emergency response system, the immediate priority in CPR is to begin chest compressions to support blood circulation. High-quality chest compressions are crucial in providing oxygen to vital organs, especially the brain, during cardiac arrest. Starting chest compressions promptly can improve the chances of survival for the person in need of CPR. Checking for breathing, performing abdominal thrusts, or assessing pulse should only be done after initiating chest compressions in the CPR sequence.