Management of Severe Hyperglycemia and Stroke-Like Symptoms

Immediate Glucose Management

The American Heart Association recommends initiating continuous IV insulin infusion immediately using regular insulin at 1 unit/mL concentration, starting at 0.5 units/hour and titrating to maintain glucose 140-180 mg/dL in patients with severe hyperglycemia and stroke-like symptoms 1, 2, 3
Monitoring blood glucose every 1-2 hours initially is crucial, as this level of hyperglycemia significantly worsens stroke outcomes and increases risk of hemorrhagic transformation 1
The target range of 140-180 mg/dL is based on American Heart Association/American Stroke Association guidelines and avoids the hypoglycemia risk associated with tighter control 1, 2, 3
Avoiding glucose-containing IV fluids and using normal saline for volume resuscitation is recommended 3

Proceeding with brain MRI with diffusion-weighted imaging as recommended by tele-neurology to definitively assess for acute infarction is essential, since CT may miss early ischemic changes 3, 4
Administering full-dose aspirin (325 mg) as recommended by neurology consultation is crucial 3
Continuing cardiac monitoring for at least 24 hours to detect atrial fibrillation, which is present in many stroke patients and requires anticoagulation, is necessary 1, 3, 5

The American Heart Association recommends not treating the blood pressure unless systolic >220 mmHg or diastolic >120 mmHg, as lowering BP can extend the infarct in acute stroke 1, 3, 5
If antihypertensive therapy becomes necessary, using short-acting agents (labetalol or nicardipine) that can be rapidly titrated is recommended 5

Obtaining right upper quadrant ultrasound to evaluate for fatty liver, cirrhosis, or other hepatic pathology is necessary 4
Administering thiamine 100 mg IV immediately given alcohol use history to prevent Wernicke's encephalopathy, which can also present with focal neurological deficits, is crucial 4

Admitting to intensive care unit or stroke unit with continuous cardiac monitoring and capability for frequent glucose checks is essential 1, 3, 6
Maintaining NPO status until swallow evaluation is completed, as stroke patients are at high risk for aspiration, is necessary 3

Measuring hemoglobin A1c immediately to determine if this represents undiagnosed chronic diabetes or acute stress hyperglycemia is crucial 1, 6
Checking serum osmolality to assess for hyperosmolar hyperglycemic state is necessary 4
Rechecking anion gap, serum ketones, and venous blood gas to definitively rule out DKA, as the current anion gap of 16.8 is concerning, is essential 4

Not relying solely on subcutaneous insulin for glucose >1000 mg/dL - IV insulin is mandatory for rapid, titratable control 2
Not targeting glucose <140 mg/dL - this increases hypoglycemia risk without proven benefit and hypoglycemia can cause permanent brain damage 1, 2, 3
Not assuming symptoms are purely metabolic - proceeding with full stroke evaluation even with severe hyperglycemia, as both conditions may coexist, is necessary 3, 4
Not overlooking DKA - the anion gap and extreme hyperglycemia warrant definitive exclusion 4
Not delaying insulin therapy - hyperglycemia worsens stroke outcomes and increases hemorrhagic transformation risk 1