Which infections cause first-degree atrioventricular (AV) block?

Updated: Jan 06, 2020
  • Author: Jamshid Alaeddini, MD, FACC, FHRS; Chief Editor: Jose M Dizon, MD  more...
  • Print
Answer

Infective endocarditis, diphtheria, rheumatic fever, Chagas disease, Lyme disease, and tuberculosis all may be associated with first-degree AV block. Extension of the infection to the adjacent myocardium in native or prosthetic valve infective endocarditis (ie, ring abscess) can cause AV block. Acute myocarditis caused by diphtheria, rheumatic fever, or Chagas disease can result in AV block.


Did this answer your question?
Additional feedback? (Optional)
Thank you for your feedback!