A patient with a 5‑year history of diabetes who stopped antidiabetic medications 4 days ago presents with a random blood glucose of 430 mg/dL and no altered sensorium; how should this be managed in a resource‑poor setting?

Management of Severe Hyperglycemia in Resource-Poor Settings

Initiate insulin therapy immediately with a basal-bolus regimen at 0.5 U/kg/day (approximately 50% basal, 50% nutritional insulin), along with aggressive hydration and close monitoring for diabetic ketoacidosis (DKA).

Immediate Assessment

First, determine if this is simple hyperglycemia or a hyperglycemic crisis:

• Check for DKA signs: Assess for Kussmaul breathing, fruity breath odor, abdominal pain, or altered mental status (though absent here)
• Obtain urine ketones if available (dipstick is sufficient in resource-poor settings)
• Check basic electrolytes if possible, particularly potassium before starting insulin
• Assess hydration status: Check skin turgor, mucous membranes, blood pressure, and heart rate

The absence of altered sensorium is reassuring but does not rule out DKA or hyperosmolar hyperglycemic state (HHS), as these can present with preserved consciousness initially 1, 2.

Insulin Initiation Protocol

Since the patient has been off medications for 4 days with RBS of 430 mg/dL, discontinue any oral antidiabetic agents (if restarted) and begin insulin 1:

Calculate Total Daily Dose (TDD):

• For glucose 201-400 mg/dL: Use 0.5 U/kg body weight per day 1
• Example: 70 kg patient = 35 units total daily

Distribution:

• 50% as basal insulin: Give once daily (NPH can be given twice daily if long-acting analogs unavailable)
• 50% as nutritional insulin: Divide into three equal doses before meals (if eating)
• If NPO or poor oral intake: Give basal insulin only with correction doses every 4-6 hours 1

Correction (Supplemental) Insulin Scale:

For glucose 351-400 mg/dL, use the "usual" column 1:

• Give 14 units of regular or rapid-acting insulin immediately
• Recheck glucose in 2-4 hours

Fluid Management

Hydration is critical in resource-poor settings where laboratory monitoring may be limited 2:

• Start with 0.9% normal saline (never use hypotonic fluids initially) 2
• Give 1-2 liters over first 1-2 hours if no heart failure
• Continue at 250-500 mL/hour based on hydration status
• Monitor urine output hourly if possible

Monitoring Strategy

In resource-poor settings, prioritize these checks 3:

Immediate/Hourly:

• Capillary glucose every 1-2 hours initially
• Heart rate, blood pressure, respiratory rate
• Mental status
• Urine output

Call for help if:

• Glucose <70 mg/dL (3.9 mmol/L) - hypoglycemia emergency
• Glucose remains >300 mg/dL after 6 hours of treatment
• Patient develops altered mental status
• Signs of DKA develop (rapid breathing, vomiting, abdominal pain)

Critical Pitfalls to Avoid

1. Never use sliding-scale insulin alone - this increases risk of both hyper- and hypoglycemia 3-fold 1

2. Do not restart oral medications in this acute setting - metformin risks lactic acidosis with dehydration; sulfonylureas cause unpredictable hypoglycemia; other agents take too long to work 1

3. Monitor for hypoglycemia aggressively - once treatment starts, glucose can drop rapidly. Have oral glucose or sugar water immediately available 4

4. Potassium replacement is essential - insulin drives potassium into cells. If possible, check potassium before starting insulin. Replace potassium once urine output is established 2

Resource-Poor Adaptations

When laboratory access is limited:

• Use urine ketone dipsticks instead of serum ketones
• Regular insulin (if rapid-acting analogs unavailable) works but give 30 minutes before meals and every 6 hours for corrections 1
• NPH insulin can substitute for long-acting analogs but requires twice-daily dosing 1
• Clinical assessment of hydration (skin turgor, mucous membranes, capillary refill) guides fluid therapy when labs unavailable
• Maintain a flow sheet documenting all glucose values, insulin doses, fluids given, and vital signs 2

Transition Planning

Once glucose stabilizes below 200 mg/dL:

• Continue basal-bolus regimen
• Educate on medication adherence - stopping insulin for 4 days is life-threatening
• Arrange close follow-up within 1-2 days
• Ensure patient has insulin supply and can afford it
• Consider social/financial barriers that led to medication discontinuation 2

The 5-year diabetes history with recent medication cessation suggests this is likely type 2 diabetes requiring insulin, though type 1 cannot be excluded. The key is immediate insulin therapy with close monitoring - delays in treatment to achieve "perfect" glycemic targets increase morbidity and mortality 1, 5.