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Case Reports
. 2003 Sep;29(9):1594-7.
doi: 10.1007/s00134-003-1871-3. Epub 2003 Aug 1.

Adult presentation of MCAD deficiency revealed by coma and severe arrythmias

F Feillet  1 , G Steinmann, C Vianey-Saban, C de Chillou, N Sadoul, E Lefebvre, M Vidailhet, P E Bollaert
Affiliations
Case Reports

Adult presentation of MCAD deficiency revealed by coma and severe arrythmias

F Feillet et al. Intensive Care Med. 2003 Sep.

Abstract

We report the case of a 33-year-old man who presented with headaches and vomiting. Soon after admission he became drowsy and agitated, developed ventricular tachycardia and his neurological state worsened (Glasgow coma score 6). Blood analysis showed respiratory alkalosis, hyperlactacidemia (8 mmol/l), hyperammonemia (390 micro mol/l) and hypoglycaemia (2.4 mmol/l). Subsequently, he developed supraventricular tachycardia, ventricular tachycardia and ultimately ventricular fibrillation resulting in cardiac arrest, which was successfully treated. A CT scan of the head revealed cerebral oedema. Whilst in the intensive care unit, he developed renal failure and rhabdomyolysis. The metabolic abnormalities seen at the time of admission normalised within 48 h with IV glucose infusion. Biological investigations, including urinary organic acids and plasma acylcarnitines, showed results compatible with MCAD deficiency. Mutation analysis revealed the patient was homozygous for the classical mutation A985G. This is one of only a few reports of severe cardiac arrhythmia in an adult due to MCAD deficiency. This condition is probably under-diagnosed in adult patients with acute neurological and/or cardiac presentations.

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