Anewlypostedjuniordoctorhaddifficultyinfindingoutbasedeficit/excessforbloodinagivenpatient.Anexperienced senior resident advised a quick method to determine acid-base composition of blood-based on pCO2. Which of the following is the likely method he suggested to predict acid base composition of blood
Correct Answer: Siggard-Andersen nomogram
Description: Siggard-Anderson nomogram: plots the acid-base charecteristics of aerial blood PCO2 is placed on the veical axis and pH on the horizontal axisVeical line through pH 7.40: any point to the left denotes acidosis & any point to right denotes alkalosisHorizontal line through p CO2 of 40 mmHg: point above or below this line defines the effective degree of hypo or hyperventilationRef: Ganong 19/e p703 fig 39.8
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