<prompt> A child presents with peripheral circulatory failure. The arterial pH is 7.0, pCO2 of 15 mmHg, pO2 76 mmHg. Which of the following will be the immediate therapy-Sodium bicarbonate infusionA bolus of Ringers lactateA bolus of hydroxyethyl starchDopamine infusion  <response>: Ans- B Volume replacement by RL or normal saline is the first step in the management of shock peripheral circulatory failure. Giving Sod bicarb without fluids increases mortality by cardio-depressant action 