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ECG changes in ventricular septic defect (VSD)

Authoring team

These include:

  • if the defect is small the ECG may be normal
  • while the pulmonary resistance is low the volume overload of the left ventricle produces features of left ventricular hypertrophy
  • as the pulmonary resistance increases right ventricular hypertrophy occurs
  • as pulmonary and systemic vascular resistances become balanced the left ventricular volume overload is lost. The left ventricular hypertrophy regresses leaving pure right ventricular hypertrophy

Click here for example ECG and further information


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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.

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