Myoglobinuria: recurrent from genetic origin

[MIM 268 200550 500]

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