Dr.Siddique_Rhythm

Q. How to calculate Serum Sodium (Na) in hypoglycemic state?
Ans:

• In hyperglycaemic patients, the corrected [Na+] should be taken into account. This is calculated by adding 1.6 mmol/L to the measured [Na+] for every 5.55 mmol/L (100 mg/dL) increment of serum glucose above normal.

• Corrected Sodium  = Measured sodium + [(Serum glucose - 100)/100] x 1.6)

E.g. RBS=33.3 mmol/L (600 mg/dl), Na+=150

Nac= 150+[1.6x(600-100)/100]= 158.