Ugly Twins: Combined HHS + DKA

A 13 year-old castrated male domestic shorthaired cat (2.72 kg) was presented to the veterinary teaching hospital emergency department for worsening lethargy and weakness. He had been recently diagnosed with diabetes mellitus and started on PZI insulin at 1 unit twice a day.  Historically, the cat was diagnosed with ocular histoplasmosis that was in remission on fluconazole treatment. 

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