According to WHO recommendations currently adopted in India, the sodium concentration in reduced-osmolarity oral rehydration salts (ORS) is:

• A 60 mmol/L
• B 75 mmol/L ✓
• C 90 mmol/L
• D 120 mmol/L

Explanation

Reduced-osmolarity ORS contains sodium 75 mmol/L, chloride 65, potassium 20, glucose 75 and citrate 10, giving a total osmolarity of 245 mmol/L. It replaced the earlier formulation containing 90 mmol/L of sodium and higher osmolarity after trials demonstrated comparable efficacy with reduced vomiting, reduced stool output and less need for supplementary IV therapy. Values of 60 or 120 do not correspond to any standard ORS formulation.

Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.