MSFinals-0203
A 61-year-old man experiences persistent, intense chest pain that spreads to his left arm. Despite taking multiple antacid tablets, he finds no relief. He eventually seeks medical attention at the Emergency Department and is diagnosed with a heart attack. He is admitted to the hospital and stabilized before being discharged five days later.
About three weeks later, the man begins to experience a constant, burning sensation in his chest. He returns to the hospital, where a friction rub is detected during auscultation. Additionally, his heart sounds are muffled.
What is the most likely cause of this complication, given the man’s medical history?