A 42-year-old farmer presents after being sprayed with a pesticide. He appears in distress. His vital signs are HR 50 bpm, BP 104/50 mm Hg, RR 26/min, and T 36.9°C. He is vomiting copiously, continuously tearing, and coughing up sputum. What is the best next step?

A 24-year-old man presents to the ED after being stabbed in the left mid-chest. Bedside ultrasound is shown above. Which of the following is a characteristic exam finding associated with this disease process?

A 2-year-old, 12 kg boy presents to the emergency department with a seizure. He had just been discharged from the emergency department after repair of a large forehead laceration and was being carried to the car when the seizure began. Review of his chart shows he was administered 14 mL of 0.5% bupivacaine for the laceration repair. Intravenous midazolam stops the seizure, after which the patient has a heart rate of 50 beats per minute and blood pressure of 64/36 mm Hg, and he is receiving assisted ventilation. The patient loses his pulse and becomes asystolic on the monitor. You begin cardiopulmonary resuscitation and administer epinephrine without response. Which of the following is most likely to result in the return of spontaneous circulation in this patient?

A 12-year-old girl presents with joint pain and fevers. She reports that over the past week, she has had pain in multiple joints, starting in the shoulders, then moving to the left knee. Today, her parent noticed that she had a fever and a rash. She has a history of anaphylaxis to penicillin, and on review of systems, she notes a sore throat for several days 1 month ago. On a physical exam, there is a slightly raised macular rash in a serpiginous pattern with central clearing on her trunk. She has no murmur on auscultation. Her left knee is tender with an effusion. What is the most appropriate treatment for this patient?

Which of the following can decrease levels of brain natriuretic peptide?

A 50-year-old man with a history of alcohol use disorder presents with confusion and diarrhea. He has been living alone for the past year after the death of his spouse. When his daughter visited him for the first time in several months, she found him to be disheveled and disoriented. His vital signs are within normal limits. On physical exam, he is oriented to person but not place or time, and he has difficulty performing complex tasks. His strength, sensation, cranial nerves, and gait are normal. There is a hyperpigmented scaly rash on his neck and bilateral arms. What is the most likely diagnosis?

Which of the following is the preferred imaging study to diagnose acute diverticulitis?

Which one of these statistical terms describes the risk of committing a type I error?

Which of the following is a characteristic of pseudogout?