<prompt> Which of the following would be the plasma osmolality of child with plasma Na 125 MEqL, glucose of 108mgdl, and blood urea nitrogen BUN of 140 mgdl360 mOsmkg306 mOSMkg312 mOSmkg318 mOsmkg  <response>: Plasma osmolality measures the body;s electrolyte-water balance. Whereas osmolality with an l is defined as the number of osmoles Osm of solute per kilogram of solvent osmolkg or Osmkg, osmolarity with an r is defined as the number of osmoles of solute per liter L of solution osmolL or OsmL. Reference: GHAI Essential pediatrics, 8th edition 