Myoglobinuria: recurrent from genetic origin
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Unknown prevalence and mode of transmission.
Mutations of several genes could be involved:
- MT-CO1 and MT-CO2 of the mitochondrial DNA which codes for the mitochondrial C oxidase cytochrome
- LPIN1 on 2p21, autosomal recessive transmission. This gene codes for a muscle acid phosphatase which plays a central role in the biosynthesis of membrane phospholipids and triglycerides.
Cases where a cause cannot be identified are grouped under the term of idiopathic rhabdomyolysis or Meyer-Betz syndrome.
Myoglobinuria is by definition the excessive urinary excretion of myoglobin after the destruction of striated muscle fibers. First manifestations in children (average age 21 months): the episodes are often triggered by fever, a physical effort or prolonged fasting, or anesthesia. Symptoms: painful muscle stiffness, rapid elevation of CPK level with risk of hyperkalemia, kidney failure.
Anesthetic implications:
unknown. It is probably prudent to avoid the use of a surgical tourniquet, muscular compression (positioning), and hyperthermia. From a pharmacological point of view, avoid succinylcholine (fasciculations). It is unclear whether there is any risk of rhabdomyolysis in the presence of a halogenated agent (one published case). Fluid and calories (glucose 10 %) should be administered in an increased amount to avoid rhabdomyolysis.
References :
Updated: September 2018