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SAMJ: South African Medical Journal

versión On-line ISSN 2078-5135
versión impresa ISSN 0256-9574

SAMJ, S. Afr. med. j. vol.106 no.5 Pretoria may. 2016

http://dx.doi.org/10.7196/samj.2016.v106i5.10348 

IN PRACTICE
CASE REPORT

 

McArdle's disease presenting with acute renal failure

 

 

A B MaharajI; V B PatelII

IConsultant physician/consultant rheumatologist and Head of the Department of Internal Medicine, Prince Mshiyeni Memorial Hospital and School of Clinical Medicine, College of Health Sciences, Nelson R Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa. He is also affiliated to the Division of Clinical Immunology and Rheumatology, Academic Medical Center/University of Amsterdam, Netherlands. His current research interests include the genetics of psoriatic arthritis
IIConsultant neurologist in the Department of Neurology, Inkosi Albert Luthuli Central Hospital and Nelson R Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa

Correspondence

 

 


ABSTRACT

We report on an interesting patient who presented with acute renal failure from rhabdomyolysis and was found to have McArdle's disease on further investigation.


 

 

We report on a 35-year-old woman who presented to the emergency unit of a regional hospital with nonspecific symptoms. She was found to have acute renal failure. On clinical examination there were no signs of proximal muscle weakness and she appeared to be euthyroid. She had no features of collagen vascular disease. As part of the work-up for the acute renal failure she was noted to have an elevated creatine kinase (CK) level of 16 343 IU/L (reference range 26 - 192 IU/L). Results of thyroid function tests were normal. Antinuclear antibodies were negative. At this stage she was thought to have acute renal failure secondary to rhabdomyolysis.

Going back in the patient's history, she had had an unexplained compartment syndrome approximately 12 years ago that required surgical intervention. She was not investigated further for a cause for the compartment syndrome and had remained well since then despite exercising regularly. Prior to her current presentation she had gone on a long distance cycling trip.

The patient was admitted to the intensive care unit (ICU) and commenced on haemodialysis. While in the ICU, on complete bed rest, her CK level returned to normal, and she was discharged without any further intervention.

Two weeks later the patient returned for follow-up. She was completely asymptomatic, but measurement of the CK showed a level of 14 934 IU/L. She was readmitted to hospital and an ischaemic forearm lactate test was done. This showed a flat response of serum lactic acid and a fourfold increase in serum ammonium, which supported a diagnosis of McArdle's disease. A muscle biopsy was then done (Figs 1 - 6).

The final diagnosis was McArdle's disease.

 

 

 

 

 

 

 

 

 

 

 

 

 

Correspondence:
A B Maharaj
maharaja30@ukzn.ac.za

Accepted 2 December 2015.

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