Intermittent High-Grade Atrioventricular Block in a Man With Infective Endocarditis

      A 43-year-old man with a prosthetic aortic valve used illicit drugs intravenously and came to the hospital with infective endocarditis. Several days later, pauses were noted on his electrocardiographic monitoring strips (Figure 1).
      Figure thumbnail gr1
      Figure 1Electrocardiographic rhythm strips in a 43-year-old man with a prosthetic aortic valve and infective endocarditis. The first 2 strips are continuous, as are the last 2 strips. See text for explication.
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