title: Restrictive cardiomyopathy as a cardiac manifestation of myofibrillar myopathy.
abstract: OBJECTIVE
  Restrictive cardiomyopathy (RCM) has been repeatedly reported as a cardiac manifestation of certain neuromuscular disorders, but only in single patients with myofibrillar myopathy (MFMP).
  
  
  METHODS
  In a 19-year-old woman with a history of short stature, tiptoe-walking since childhood, fixed joint contractures, severe scoliosis requiring surgical correction, elevated levels of creatine kinase, and RCM, MFMP was diagnosed based on her clinical presentation, her elevated muscle enzymes and a muscle biopsy. An electrocardiogram showed an atrioventricular-block I, paroxysmal sinus-tachycardia, biphasic P-waves, right-axis deviation, abnormal repolarization, and episodes of supraventricular tachycardia. Echocardiography confirmed her RCM. Her respiratory function was markedly reduced, despite surgical correction of her severe scoliosis at age 14 years. After an aggravation of heart failure because of atrial flutter, the patient profited from successful cardioversion and diuretics.
  
  
  CONCLUSIONS
  Electrocardiographic abnormalities such as atrial flutter and RCM represent cardiac manifestations of MFMP. Cardioversion can be successful, and oral anticoagulation may prevent cardioembolic events.
authors.affiliation: Krankenanstalt Rudolfstiftung, Vienna, Austria. fifigs1@yahoo.de
authors.forename: Josef
authors.initials: J
authors.lastname: Finsterer
authors.forename: Claudia
authors.initials: C
authors.lastname: Stöllberger
authors.forename: Romana
authors.initials: R
authors.lastname: Höftberger
mesh_terms: D001282:Atrial Flutter / Q000209:etiology*; D002313:Cardiomyopathy, Restrictive / Q000000981:diagnostic imaging / Q000188:drug therapy / Q000209:etiology*; D004232:Diuretics / Q000627:therapeutic use; D004554:Electric Countershock; D004562:Electrocardiography / Q000295:instrumentation; D005260:Female; D006801:Humans; D009135:Muscular Diseases / Q000150:complications* / Q000473:pathology; D009210:Myofibrils / Q000473:pathology*; D014463:Ultrasonography; D055815:Young Adult
chemical_list: D004232:Diuretics