Heart 1998;79:619-621 ( June )
Case report
Cardiac involvement in proximal myotonic myopathy
a Department of Cardiology,
Georg-August-University, Göttingen, Germany, b Department of Nephrology and
Rheumatology, Georg-August-University, c Department of Pathology, Municipal Hospital, Darmstadt,
Germany, d Department of
Neuropathology, Georg-August-University, e Department of Clinical Neurophysiology,
Georg-August-University
Correspondence to: Dr C D Reimers, Abteilung für klinische Neurophysiologie, Georg-August-Universität, Robert-Koch-Strasse 40, D-37075 Göttingen, Germany. email: cd.reimers{at}med.uni-goettingen.de
Accepted for publication 19 February 1998
Proximal myotonic myopathy (PROMM) is a recently described
autosomal dominantly inherited disorder resulting in proximal muscle weakness, myotonia, and cataracts. A few patients with cardiac involvement (sinus bradycardia, supraventricular bigeminy,
conduction abnormalities) have been reported. The cases of three
relatives with PROMM (weakness of neck flexors and proximal extremity
muscles, calf hypertrophy, myotonia, cataracts) are reported: a 54 year old man, his 73 year old mother, and 66 year old aunt. All three presented with conduction abnormalities and one had repeated, life
threatening, sustained monomorphic ventricular tachycardia. This
illustrates that severe cardiac involvement may occur in PROMM.
© 1998 by Heart
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