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Hypertrophic Cardiomyopathy

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Other Names

  • Hypertrophic Obstructive Cardiomyopathy
  • HOCM


Hypertrophic Obstructive Cardiomyopathy. Note the diffuse inverted T waves, Tall R waves
  • Most common cause of congenital sudden cardiac death in athletes
  • HOCM occurs in about 1 in 500 people.


Risk Factors

  • Most causes are genetic
  • Freidreich's ataxia
  • Tacrolimus use

Differential Diagnosis

Clinical Features

  • Murmur
    • Valsalva increases left ventricular outflow tract obstruction of hypertrophic cardiomyopathy, increasing intensity of murmur.


  • Echocardiogram
  • Electrocardiogram
    • ECG screening may be done but echocardiogram and cardiac MRI are needed for a diagnosis.



  • Treatment varies depending on the patient.
    • Avoiding dehydration
    • Avoiding diuretics
    • Avoiding aggravating
    • Beta blockers are also used commonly for medical management.
  • Invasive treatment options include
    • Septal myectomy
    • ICD placement
    • Heart transplant

Return to Play

Joint decision between the patient and physician.


See Also


Created by:
John Kiel on 13 June 2019 09:01:06
Last edited:
13 July 2021 17:22:57