You are responding to a possible assault call. You choose to park down the block from the house, as police have not yet made the scene safe. However, you see what looks to be a patient in distress in the upper story window. What would be the safest approach in this situation?

Correct Answer: A

Rationale: The correct approach is to wait for responding police to control the situation and confirm it is safe for EMS. This is the safest option because entering a potentially unsafe scene without police clearance could put the EMS provider at risk. The safety of the EMS provider is paramount, and responding to a scene without police presence could escalate the situation and endanger both the provider and the patient. Waiting for police to secure the scene ensures a safe environment for providing medical care. Summary of incorrect choices: B: Waiting for police to arrive and then entering with them does not guarantee scene safety. C: Driving up to the driveway exposes the EMS provider to potential danger without police clearance. D: Heading into the house without police presence is extremely risky and violates protocol for safety and scene control.

Correct Answer: D

Rationale: Diphenhydramine is the correct answer because it is an anticholinergic medication that can block acetylcholine receptors, which helps alleviate dystonia symptoms. Promethazine (A) is an antihistamine and does not target acetylcholine receptors. Morphine sulfate (B) is an opioid analgesic and is not used for dystonia. Lidocaine (C) is a local anesthetic and is not indicated for treating dystonia. Therefore, Diphenhydramine (D) is the most appropriate choice for reversing the signs and symptoms of dystonia.

Correct Answer: C

Rationale: The correct answer is C: Transcutaneous pacing. In a patient with second-degree type II AV heart block and hemodynamic instability, transcutaneous pacing is the most appropriate intervention. This is because it directly stimulates the heart to maintain an adequate heart rate when other measures like atropine have failed. Synchronized cardioversion (choice B) is not indicated for bradycardia. Epinephrine (choice A) may worsen the AV block and increase the risk of ventricular arrhythmias. Administering a large IV bolus of normal saline (choice D) may not address the underlying conduction abnormality and could potentially worsen the patient's condition. Transcutaneous pacing is the most effective intervention to stabilize the patient's heart rate and improve perfusion in this scenario.

Correct Answer: C

Rationale: The correct answer is C: Level B. Level B protective clothing provides the highest respiratory system protection by using a self-contained breathing apparatus (SCBA) but offers lower skin protection compared to Level A. Level D offers no respiratory or skin protection. Level C provides chemical splash protection but less respiratory protection than Level B. Level A offers the highest level of both respiratory and skin protection. In this scenario, Level B is the best choice as it prioritizes respiratory protection while still providing some level of skin protection.

Correct Answer: B

Rationale: The correct answer is B: "Prevent secondary brain injury." In a patient with severe head injury (GCS 6), preventing secondary brain injury is crucial. This involves maintaining adequate cerebral perfusion pressure, controlling intracranial pressure, optimizing oxygenation, and avoiding factors that can exacerbate brain injury. Administering an osmotic diuretic (choice A) may help reduce intracranial pressure but does not address the overall goal of preventing secondary brain injury. Aggressively treating systemic hypertension (choice C) may lead to decreased cerebral perfusion and worsen the injury. Reducing metabolic requirements of the brain (choice D) is important but not the primary goal in this acute phase.