<prompt> A 30-year-old female with history of burns involving abdomen, both limbs and back and presented after 8 hours which of the following is the formula for calculation of fluid infusion:4 mLKg x TBSA for first hours than 2 mLkg x TBSA2 mLKgx TSBA3 mLKgx TSBA5 mLkgx TSBA  <response>: Ans. a 4mLkgxTBSA for first 8 hours than 2mLkgxTBSA . Whenever the patient comes we must start with 4mLkgxTBSA. Total fluid calculates half is given in first 8 hours and remaining half in 16 hours. Delay in presentation is not going to reduce the fluids needed. 