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Hypomagnesaemia causing functional hypoparathyroidism in rheumatic mitral stenosis leading to sudden cardiac arrest in a young woman
  1. Jeny Jacob1,
  2. Srivatsa Raghothama1,
  3. Kodangala Subramanyam2 and
  4. Dilip Johny2
  1. 1General Medicine, KS Hegde Medical Academy, Mangalore, Karnataka, India
  2. 2Cardiology, Nitte University KS Hegde Medical Academy, Mangalore, Karnataka, India
  1. Correspondence to Dr Dilip Johny; johnydilip{at}gmail.com

Abstract

A 23-year-old young woman with a known history of valvular heart disease of rheumatic origin, post balloon mitral valvotomy 5 years ago, presented with fever, palpitations and breathlessness. ECG showed atrial fibrillation with fast ventricular rate. A 2D transthoracic echocardiography showed severe restenosis of mitral valve and moderate left ventricular dysfunction. She was admitted for evaluation of fever and control of the ventricular rate. She sustained cardiac arrest due to unknown cause and was resuscitated. When the patient sustained another cardiac arrest, torsades de pointes was detected on the monitor. Blood parameters showed hypomagnesaemia, hypocalcaemia and hypokalaemia, causing functional hypoparathyroidism which was treated with intravenous magnesium, oral calcium and vitamin D supplements. Timely detection of a tachyarrhythmia due to a ventricular origin was life saving, which is rarely seen in patients with rheumatic heart disease and mitral stenosis.

  • arrhythmias
  • valvar diseases
  • cardiovascular system
  • endocrinology

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Footnotes

  • Contributors JJ: resuscitation and critical care management, compiling of information needed for the case report. SR: resuscitation and critical care management, compiling of information needed for the case report. SK: overall management of the patient and supervision of the case report. DJ: management, formatting and supervision of the case report.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.

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