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Progressive cardiac dysfunction in Bethlem myopathy during pregnancy.

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Bethlem myopathy, a congenital muscle disorder, can cause progressive heart dysfunction during pregnancy. This case highlights the need for close cardiac monitoring and potential early delivery in affected individuals.

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Area of Science:

  • Cardiology
  • Neuromuscular Disorders
  • Genetics

Background:

  • Bethlem myopathy is a congenital myopathy characterized by muscle weakness and joint abnormalities.
  • Cardiac involvement is common in inherited myopathies but has not been previously documented in Bethlem myopathy.

Observation:

  • A pregnant patient with Bethlem myopathy experienced progressive left ventricular dysfunction.
  • Worsening dyspnea necessitated delivery at 36 2/7 weeks of gestation.

Findings:

  • Myocardial function improved postpartum, coinciding with clinical symptom resolution.
  • This case suggests a potential association between Bethlem myopathy and pregnancy-related cardiac complications.

Implications:

  • Bethlem myopathy may be linked to progressive left ventricular dysfunction during pregnancy.
  • Early delivery may be required in pregnant patients with Bethlem myopathy experiencing cardiac decline.
  • Further research is warranted to understand the cardiac manifestations of Bethlem myopathy.