Antimitochondrial antibodies-positive myositis accompanied by cardiac involvement.

Abstract

We report a 55-year-old man who experienced proximal muscle weakness accompanied by the atrial flutter (AFL) with 1:1 conduction. Detailed examination revealed elevated antimitochondrial antibodies (AMA) and creatine kinase (CK). AFL was converted to sinus rhythm by cardioversion. He was diagnosed as AMA-positive myositis-associated AFL and was treated by prednisolone. Although his muscle weakness and CK level improved, AFL with 1:1 conduction reappeared. Therefore, radiofrequency catheter ablation (RFCA) was needed to treat the AFL, resulting in maintenance of sinus rhythm. This case report describes cardiac involvement in a patient with AMA-positive myositis.

• Authors: Tetsuo Yamanaka, Toru Fukatsu, Yoshimaro Ichinohe, Yasunobu Hirata
• Journal: BMJ case reports (BMJ Case Rep) Vol. 2017 (Mar 31 2017) ISSN: 1757-790X [Electronic] England
• PMID: 28363947 (Publication Type: Case Reports, Journal Article)
• Copyright: 2017 BMJ Publishing Group Ltd.

Topics

• Atrial Flutter (physiopathology, therapy)
• Catheter Ablation (methods)
• Electric Countershock
• Humans
• Male
• Middle Aged
• Mitochondria (immunology)
• Myositis (immunology)