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Pharmacological TherapiesGlucose in urine → UTI risk

SGLT2 InhibitorsNCLEX cheat sheet

SGLT2 inhibitors (empagliflozin, dapagliflozin, canagliflozin) are oral antidiabetic drugs that lower glucose by blocking glucose reabsorption in the kidney, causing excess glucose to be excreted in the urine (glucosuria).

23 key facts 5 practice questions Reviewed Oct 2026
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Mech

  • Blocks kidney glucose reabsorb
  • Excretes glucose in urine
  • ex: -gliflozin (empagliflozin)

Teach

  • ↑ fluids, good hygiene
  • Cardio + renal protective

Report

  • UTI + genital yeast infx
  • Euglycemic DKA possible
  • Fournier gangrene rare

Signs

  • Polyuria → dehydration
  • Orthostatic hypotension
Red flag to remember

Euglycemic DKA — nausea, vomiting, abdominal pain, and rapid breathing even with normal glucose; report immediately.

Before you read

Test yourself first: 5 questions

Question 1 of 5

A client is prescribed an SGLT2 inhibitor (for example, empagliflozin) for type 2 diabetes. Which teaching point is most important?

What is sglt2 inhibitors?

Beyond glucose control, they provide cardiovascular and renal protection and are used in heart failure and chronic kidney disease. The 'flozin' suffix flushes sugar out through the urine.

Key points to remember

  • Mechanism: block sodium-glucose cotransporter 2 in the proximal renal tubule, increasing urinary glucose excretion.
  • Cause osmotic diuresis leading to increased urination, dehydration risk, and modest weight loss and blood pressure reduction.
  • Increased urinary glucose raises the risk of genital yeast infections and urinary tract infections.
  • Provide proven cardiovascular and kidney protection; used in heart failure and CKD even in some non-diabetics.
  • Can cause euglycemic diabetic ketoacidosis (DKA with near-normal glucose) and serious genital infection (Fournier gangrene).

Signs & symptoms

  • Polyuria → dehydration
  • Orthostatic hypotension

Nursing priorities

  1. Monitor hydration status, blood pressure, and renal function due to diuretic effect.
  2. Assess for and teach prevention of genital and urinary tract infections with good perineal hygiene.
  3. Hold the drug before major surgery or during acute illness to reduce euglycemic DKA risk.
  4. Encourage adequate fluid intake and monitor for orthostatic hypotension.

Labs & values

Fasting blood glucose70-99 mg/dL
HbA1c goal generally <7%
Monitor eGFR (drug effectiveness declines as renal function falls)
Check ketones if DKA suspected despite normal glucose
7099mg/dL Normal

Patient teaching

  • Drink plenty of fluids to prevent dehydration and dizziness when standing.
  • Practice good perineal hygiene and report itching, discharge, or burning with urination.
  • Recognize DKA symptoms (nausea, vomiting, belly pain, fruity breath, fast breathing) and seek care even if glucose seems normal.
  • Report any genital pain, swelling, or redness with fever immediately.
  • Hold the medication and call the provider if you cannot eat or drink due to illness or before surgery.

Red flags: report now

  • Euglycemic DKA — nausea, vomiting, abdominal pain, and rapid breathing even with normal glucose; report immediately.
  • Severe perineal pain, swelling, redness, or fever — possible Fournier gangrene; report now.
  • Never continue during prolonged fasting, dehydration, or acute serious illness without provider guidance.

References

Clinical references for this topic

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