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Aetiology

Authoring team

Causes include:

  • increased left ventricular requirements:
    • high output states e.g. thyrotoxicosis, anaemia, polycythaemia

  • increased resistance to left ventricular evacuation:
    • systemic hypertension
    • hypertrophic obstructive cardiomyopathy
    • coarctation of aorta
    • aortic stenosis

  • inefficient emptying of left ventricle:
    • aortic incompetence
    • mitral incompetence

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