Myocardial Diseases Introduction: Layers and Common Topics
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Questions and Answers

Which of the following is NOT a common cause of Myocarditis?

  • Chlamydia (C.psittaci)
  • Influenza virus
  • Methyldopa hypersensitivity
  • Hyperthyroidism (correct)

    • What is the characteristic morphological feature of Dilated Cardiomyopathy (DCM)?

  • Irregular shape of the heart
  • Thickening of ventricular walls
  • Intermittent loss of heart muscle tissue
  • Displacement of papillary muscles (correct)

    • Which clinical feature is NOT typically associated with Hypertrophic Cardiomyopathy (HCM)?

  • Dilated ventricles on echocardiogram (correct)
  • Beat-to-beat variability of the arterial pressure waveform
  • Murmurs of mitral or tricuspid insufficiency
  • Reduced exercise tolerance and fatigue

    • What is the pathophysiological mechanism primarily responsible for diastolic dysfunction in Hypertrophic Cardiomyopathy (HCM)?

    <p>Hypertrophied and disorganized myocytes with impaired relaxation and increased chamber stiffness</p> Signup and view all the answers

    Which clinical feature is characteristic of Restrictive Cardiomyopathy (RCM)?

    <p>Right-sided signs and symptoms</p> Signup and view all the answers

    What is the hallmark pathophysiological feature of Arrhythmogenic Right Ventricular Cardiomyopathy (ARVC)?

    <p>Asymmetrical septal myocardial hypertrophy with systolic anterior motion (SAM) of the anterior mitral leaflet (AML)</p> Signup and view all the answers

    Which condition is characterized by the replacement of RV myocardium with fat & fibrous tissue, leading to fatal arrhythmias?

    <p>Arrhythmogenic RV Cardiomyopathy (ARVC)</p> Signup and view all the answers

    Which cardiomyopathy typically involves regional RV, global RV, and partial LV involvement with sparing of the septum?

    <p>Arrhythmogenic RV Cardiomyopathy (ARVC)</p> Signup and view all the answers

    In which cardiomyopathy do patients often present with onset of arrhythmias ranging from PVCs to VF, with a high risk of SCD due to VT/VF during sports-related exercise?

    <p>Arrhythmogenic RV Cardiomyopathy (ARVC)</p> Signup and view all the answers

    Which cardiomyopathy is characterized by major enlargement of the atria on echocardiography?

    <p>Restrictive Cardiomyopathy (RCM)</p> Signup and view all the answers

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