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What is Calculate the base deficit in a patient of weight 75 kg with a pH = 6.96, pCO2 = 30 mm Hg and HCO3- = 6 mEq/L: and explain in detail?
Ans: C. 500 mEq(Ref Harrison 19/e p317, 12/e p368).Base deficit in question = 400 mEq.Base excess & base deficit:Refer to an excess or deficit respectively in amount of base present in blood.Total bicarbonate deficit = 0.3 x weight (kg) x base deficitBase deficit in mEq = 0.4 x weight (kg) x Total Base Deficit = (24-6) x 0.4 x 75 = 540 mEq = 500 mEq (approx.)To obtain deficit in grams, divide mEq by 12.