This site is intended for healthcare professionals

2693 pages added, reviewed or updated during the last month (last updated: 14/4/2021)

2693 pages added, reviewed or updated during the last month (last updated: 14/4/2021)


Medical search

aetiology

FREE subscriptions for doctors and students... click here
You have 3 more open access pages.

About 15-20% of cases of permanent atrial fibrillation and approximately 50% of cases of paroxysmal atrial fibrillation are idiopathic (1,2,3)

Most important triggers and associations seen in AF are

  • cardiovascular disorders
    • hypertension
    • cardiac valve disease, especially mitral valve disease
    • coronary artery disease
    • left ventricular systolic dysfunction
  • pulmonary disorders
    • infection
    • pulmonary embolism
    • OPD
  • constitutional disorders
    • toxic insults e.g – chronic or acute alcohol intake
      • even modest habitual alcohol intake of 1.2 drinks/day was associated with an increased risk of AF (4)
    • high caffeine intake
    • thyrotoxicosis
    • sepsis (especially chest and urine infections) (2)

In the context of secondary atrial fibrillation, the causes of atrial fibrillation may be considered in terms of common and rare causes.

Atrial fibrillation may result from any of the following changes in the atria (3):

  • dilatation
  • increased muscle mass
  • inflammation, infiltration and fibrosis

Reference:

Last edited 01/2021 and last reviewed 01/2021

Links: