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Unsuspected diabetic ketoacidosis after myocardial infarction in a patient treated with SGLT2 inhibitor increased length of stay in the hospital: how can it be prevented? A case report.
European Heart Journal. Case Reports 2023 August
BACKGROUND: As the use of sodium-glucose co-transporter 2 inhibitors (SGLT2is) has expanded beyond glucose-lowering therapy in type 2 diabetes mellitus (T2DM), including chronic kidney disease and heart failure, there has also been an increase in reported cases of diabetic ketoacidosis (DKA) associated with SGLT2i.
CASE SUMMARY: A 77-year-old woman with T2DM presented to the emergency department with ST-segment elevation myocardial infarction (MI) complicated by atrial fibrillation. Her medications included empagliflozin, an SGLT2i, initiated for T2DM. Diabetic ketoacidosis was suspected on the basis of a large anion gap, despite a plasma glucose level below 200 mg/dL (11.1 mmol/L) and the absence of symptoms, including nausea and vomiting. Laboratory tests confirmed metabolic acidosis and high ketones. However, the diagnosis of euglycaemic DKA (eu-DKA) was delayed due to lack of symptoms and moderate hyperglycaemia. The patient was successfully treated according to DKA management guidelines. She was discharged on insulin, and SGLT2i was discontinued.
DISCUSSION: This is a case of asymptomatic eu-DKA after acute MI (AMI). We discuss the use of SGLT2is in AMI and arrhythmias from a review of the literature and the prophylaxis of eu-DKA. Regular monitoring of blood glucose and ketones should be performed in hospitalized T2DM patients treated with SGLT2i. The SGLT2i should be stopped as soon as possible in the event of critical illness or suspected DKA in the setting of an acute illness such as AMI. To help clinicians prevent this potentially fatal disease, we propose a flowchart for the prophylactic management of eu-DKA among inpatients.
CASE SUMMARY: A 77-year-old woman with T2DM presented to the emergency department with ST-segment elevation myocardial infarction (MI) complicated by atrial fibrillation. Her medications included empagliflozin, an SGLT2i, initiated for T2DM. Diabetic ketoacidosis was suspected on the basis of a large anion gap, despite a plasma glucose level below 200 mg/dL (11.1 mmol/L) and the absence of symptoms, including nausea and vomiting. Laboratory tests confirmed metabolic acidosis and high ketones. However, the diagnosis of euglycaemic DKA (eu-DKA) was delayed due to lack of symptoms and moderate hyperglycaemia. The patient was successfully treated according to DKA management guidelines. She was discharged on insulin, and SGLT2i was discontinued.
DISCUSSION: This is a case of asymptomatic eu-DKA after acute MI (AMI). We discuss the use of SGLT2is in AMI and arrhythmias from a review of the literature and the prophylaxis of eu-DKA. Regular monitoring of blood glucose and ketones should be performed in hospitalized T2DM patients treated with SGLT2i. The SGLT2i should be stopped as soon as possible in the event of critical illness or suspected DKA in the setting of an acute illness such as AMI. To help clinicians prevent this potentially fatal disease, we propose a flowchart for the prophylactic management of eu-DKA among inpatients.
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