[Metabolic acidosis of surprising origin in a 61-year-old female patient]. / Metabolische Azidose mit überraschender Ursache bei einer 61-jährigen Patientin.

A 61-year-old female patient presented to the emergency room with nausea. Laboratory findings revealed metabolic acidosis, which had to be associated with a sodium-glucose co-transporter­2 (SGLT2) inhibitor. Due to increasing prescription rates of SGLT2 inhibitors for diabetes mellitus, congestive heart failure or chronic renal insufficiency, a growing numbers of cases of SGLT2 inhibitor-associated ketoacidosis should be expected. Calculating the anion gap can provide orientation in the case of acidosis of unknown origin. Presumably, a relevant proportion of such cases of ketoacidosis is currently being overlooked or its diagnosis delayed.