ACCS Practice Exam 2025 – Complete Test Preparation Guide

In the scenario of a patient presenting unconscious with facial abrasions after an accident, a CT scan is the most beneficial diagnostic study. The primary concern in such cases, especially after a traumatic event, is to identify any potential intracranial injuries, such as hemorrhages, contusions, or fractures of the skull. A CT scan is rapid, widely available, and highly effective in detecting these types of injuries, which can be crucial for determining the immediate management and treatment plan for the patient.

While the other diagnostic options may provide useful information, they are not as directly relevant to the acute assessment of potential brain injuries. A lung scan focuses on pulmonary function and would not address neurological concerns. Arterial blood gases (ABG) primarily provide insight into a patient’s respiratory status and metabolic function but do not help evaluate trauma to the head. Serum electrolytes can provide information about a patient’s metabolic and hydration status but are not used to assess for traumatic brain injuries. Therefore, in the context of this clinical scenario, a CT scan is essential for a thorough evaluation of possible brain injury and guiding treatment.