A 40-year-old man presents to the emergency department with sharp chest pain and palpitations. He says the pain is worse when he lies down and is exacerbated by coughing, but it improves when he moves to a seated position. He was recently diagnosed with systemic lupus erythematosus after investigation for recurrent cyanotic discoloration and numbness of his fingers following exposure to the cold, as well as small-joint polyarticular arthritis. Which of the following heart sounds on auscultation is most consistent with his history? Learn more about this case, take the quiz, and join the conversation on Figure 1.
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Learn more about this case, and join the conversation on Figure 1.