<prompt> Which of the following would be the plasma osmolatity of child with plasma Na 125 mEqL, glucose of 108mgd1, and blood urea nitrogen BUN of 140 mgdl -360 mOsmkg306 mOsmkg312 mOsmkg318 mOsmkg  <response>: Ans. is b i.e., 306 mOsmkg Osmolality 2 Na .055 .36 mOSML meqL mgdl mgdl. o Replacing values given in the question. Osmolaity 2 125 meq1 .055X108mgdL.36 X 140mg dL 306 mOsmL. 