This site is intended for healthcare professionals

Sign in
Go to /sign-in page

You can view 5 more pages before signing in

Aetiology

Authoring team

Acute atrioventricular block is caused by:

  • myocardial infarction:
    • complicates 15% of inferior myocardial infarcts because of transient AVN ischaemia
    • permanent block is unusual and the escape rhthym originates high in the conducting system
    • occasionally an anterior infarct interupts both bundle branches resulting in a slow unstable heart beat with bad prognosis
  • digitalis poisoning
  • diphtheria
  • virus infection

Chronic atrioventricular block is caused by:

  • idiopathic bundle branch fibrosis - accounts for 50% of cases in the elderly
  • chronic coronary disease
  • calcification of the aortic valve or mitral annulus infiltrating the conducting system
  • sarcoid
  • Chagas' disease
  • gumma

Related pages

Create an account to add page annotations

Create a free account

Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page

The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

Connect

Copyright 2024 Oxbridge Solutions Limited, a subsidiary of OmniaMed Communications Limited. All rights reserved. Any distribution or duplication of the information contained herein is strictly prohibited. Oxbridge Solutions receives funding from advertising but maintains editorial independence.