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Logo of procrsmedFormerly medchtJournal of the Royal Society of MedicineProceedings of the Royal Society of Medicine
Proc R Soc Med. 1929 April; 22(6): 747–754.
PMCID: PMC2102487

Post-Operative Acidosis


A slight but real acidosis, involving a temporary decrease in alkaline reserve and increase in urinary acidity, occurs after all inhalation anæsthesias. Ketonuria is also present in 20 to 80 per cent. of cases. Local anæsthetics also produce these conditions, but less severely and less frequently.

The acidosis seemed to depend on complex factors, but mainly on tissue anoxæmia produced by the upset of normal respiration and circulation during operative procedures. In the normal individual this acidosis is very slight, transient, causes no symptoms and is of no moment. It cannot be entirely prevented by previous administration of sodium bicarbonate, glucose and insulin, although high carbohydrate diet before operation minimizes the tendency to acidosis. Cases with acidosis before operation become worse afterwards and require treatment to prevent complications.

The pre- and post-operative treatment of acidosis and ketosis in normals and diabetics, especially in emergency conditions, is discussed.

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