CEN Domain 7: Environment and Toxicology Emergencies, and Communicable Diseases Welcome to your CEN Domain 7: Environment and Toxicology Emergencies, and Communicable Diseases 1. CEN: Environment and Toxicology Emergencies and Communicable Diseases A patient presents with symptoms of sweating, salivation, and miosis after exposure to an unknown substance. Which of the following is the most likely causative agent? A. Cyanide B. Organophosphates C. Carbon monoxide D. Methanol None 2. CEN: Environment and Toxicology Emergencies and Communicable Diseases Which of the following best describes the initial management of a patient with severe hypothermia and cardiac instability? A. Active external warming techniques B. Passive external warming techniques C. Intravenous administration of warm fluids D. Immediate cardiac pacing None 3. CEN: Environment and Toxicology Emergencies and Communicable Diseases A patient presents with acute arsenic poisoning. Which of the following is the most appropriate initial treatment? A. N-acetylcysteine B. Dimercaprol C. Methylene blue D. Sodium bicarbonate None 4. CEN: Environment and Toxicology Emergencies and Communicable Diseases In managing a patient with a black widow spider bite, which of the following is the most effective treatment? A. Corticosteroids B. Antivenom C. Antibiotics D. Analgesics None 5. CEN: Environment and Toxicology Emergencies and Communicable Diseases A patient presents with acute onset of fever, headache, and a petechial rash after cleaning an old storage shed. What is the most likely diagnosis? A. Lyme disease B. Rocky Mountain spotted fever C. Ehrlichiosis D. Hantavirus pulmonary syndrome None 6. CEN: Environment and Toxicology Emergencies and Communicable Diseases Which of the following agents is most likely to cause a cherry red skin coloration in a poisoned patient? A. Cyanide B. Carbon monoxide C. Methemoglobinemia D. Organophosphate poisoning None 7. CEN: Environment and Toxicology Emergencies and Communicable Diseases In a patient with acute radiation sickness, which of the following symptoms would appear first? A. Hair loss B. Skin burns C. Vomiting and nausea D. Bone marrow suppression None 8. CEN: Environment and Toxicology Emergencies and Communicable Diseases A patient presents with fever, headache, and confusion after a tick bite. The presence of a maculopapular rash starting on the wrists and ankles suggests which of the following diseases? A. Lyme disease B. Rocky Mountain spotted fever C. Babesiosis D. Ehrlichiosis None 9. CEN: Environment and Toxicology Emergencies and Communicable Diseases What is the primary treatment for a patient suffering from botulism? A. Antibiotics B. Botulinum antitoxin C. Corticosteroids D. Supportive care only None 10. CEN: Environment and Toxicology Emergencies and Communicable Diseases In the event of a chemical spill resulting in exposure to hydrofluoric acid, which of the following is the most appropriate first aid measure? A. Flush the area with water for at least 15 minutes B. Apply a tourniquet above the site of exposure C. Neutralize with a baking soda solution D. Immediate administration of calcium gluconate gel None 11. CEN: Environment and Toxicology Emergencies and Communicable Diseases A patient presents with acute respiratory distress syndrome (ARDS) following inhalation of chlorine gas. Which of the following is the most appropriate management strategy? A. High-flow oxygen therapy B. Immediate intubation and mechanical ventilation C. Administration of bronchodilators D. Nebulized sodium bicarbonate None 12. CEN: Environment and Toxicology Emergencies and Communicable Diseases What is the recommended treatment for a snakebite from a pit viper when envenomation is suspected? A. Ice application to the bite site B. Immobilization and elevation of the affected limb C. Administration of antivenom D. Tourniquet application above the bite site None 13. CEN: Environment and Toxicology Emergencies and Communicable Diseases Which of the following is a hallmark sign of Ebola virus disease 'EVD'? A. Watery diarrhea B. Profuse sweating C. Hemorrhagic rash D. Vesicular skin lesions None 14. CEN: Environment and Toxicology Emergencies and Communicable Diseases A patient presents with severe metabolic acidosis and a history of ingesting a household cleaner. Which substance is most likely responsible? A. Sodium hypochlorite B. Ethylene glycol C. Isopropyl alcohol D. Hydrochloric acid None 15. CEN: Environment and Toxicology Emergencies and Communicable Diseases In the management of a patient with severe acute radiation syndrome, which of the following treatments is essential to prevent infection due to bone marrow suppression? A. Granulocyte colony-stimulating factor (G-CSF) B. Intravenous immunoglobulin C. Platelet transfusion D. Hemodialysis None 16. CEN: Environment and Toxicology Emergencies and Communicable Diseases A patient presents with blurred vision, tachycardia, and urinary retention following the ingestion of a plant. Which of the following plants is most likely responsible? A. Rhododendron B. Oleander C. Jimson weed (Datura) D. Lily of the valley None 17. CEN: Environment and Toxicology Emergencies and Communicable Diseases For a patient experiencing severe lead poisoning, which of the following chelating agents is preferred? A. Dimercaprol B. Deferoxamine C. Penicillamine D. Calcium disodium edetate 'CaNa2EDTA' None 18. CEN: Environment and Toxicology Emergencies and Communicable Diseases Which of the following is the most effective treatment strategy for a patient suffering from digoxin toxicity? A. Activated charcoal B. Hemodialysis C. Digoxin immune Fab D. Sodium bicarbonate None 19. CEN: Environment and Toxicology Emergencies and Communicable Diseases A patient presents with severe dyspnea, wheezing, and cough after inhalation of a gas at an industrial site. Which gas is most likely responsible for these symptoms? A. Nitrogen dioxide B. Methane C. Helium D. Argon None 20. CEN: Environment and Toxicology Emergencies and Communicable Diseases Which of the following findings is most indicative of severe carbon monoxide poisoning on laboratory testing? A. Elevated carboxyhemoglobin level B. Decreased serum bicarbonate C. Elevated white blood cell count D. Hypoxemia None 1 out of 20 Time is Up! Time's up
