4.1 Type 1 and Type 2 Diabetes Management
Key Takeaways
- The Diabetes Medical Management Plan (DMMP), signed by the student's licensed healthcare provider, serves as the foundational legal and clinical document guiding all school-based diabetes care, 504 accommodations, and Individualized Healthcare Plans (IHPs).
- Mild-to-moderate hypoglycemia (<70 mg/dL) must be treated immediately using the 15-15 Rule: administer 15 grams of fast-acting simple carbohydrates, wait 15 minutes in place, and recheck blood glucose; repeat if still <70 mg/dL.
- Severe hypoglycemia involving loss of consciousness, seizures, or inability to swallow requires emergency administration of nasal powder glucagon (Baqsimi 3 mg) or IM/SC glucagon, immediate placement in a side-lying recovery position to prevent aspiration from post-injection vomiting, and calling 911.
- Hyperglycemia with blood glucose >250 mg/dL requires checking for urine or blood ketones; if ketones are moderate to large, physical exercise is strictly prohibited because exercise increases counter-regulatory hormones and accelerates Diabetic Ketoacidosis (DKA).
- School nurses must coordinate the 3-Tier Diabetes Training Framework, ensuring Level 3 designated Unlicensed Assistive Personnel (UAP) complete formal competency verification to perform blood glucose monitoring, carb counting, insulin pump/pen assistance, and emergency glucagon administration when an RN is not immediately present.
4.1 Type 1 and Type 2 Diabetes Management
Pathophysiology of Pediatric Diabetes Mellitus
Diabetes mellitus in school-aged children comprises two distinct metabolic disorders that impair glucose homeostasis. Type 1 Diabetes Mellitus (T1D) accounts for approximately 85% to 90% of pediatric cases and results from autoimmune destruction of pancreatic beta cells in the Islets of Langerhans, leading to absolute insulin deficiency. Without exogenous insulin, glucose cannot enter cells, resulting in intracellular starvation, severe hyperglycemia, lipolysis, and rapid progression to Diabetic Ketoacidosis (DKA).
In contrast, Type 2 Diabetes Mellitus (T2D) is characterized by peripheral insulin resistance paired with relative insulin deficiency, often strongly linked to obesity, metabolic syndrome, and familial predisposition. While students with T2D may be managed with lifestyle modifications, metformin, or GLP-1 receptor agonists, many also require basal or bolus insulin. The Nationally Certified School Nurse (NCSN) plays a pivotal clinical role in maintaining glycemic control (target HbA1c <7.0% to 7.5% depending on pediatric guidelines) while minimizing acute disruptions to learning.
School Health Governance: DMMP, IHP, and Section 504 Accommodations
Effective diabetes management in schools relies on three interconnected documents that bridge medical orders, nursing care, and federal legal rights:
- Diabetes Medical Management Plan (DMMP): Authoritative medical order completed and signed by the student's pediatric endocrinologist or primary care physician. It details specific blood glucose target ranges, individualized insulin-to-carbohydrate ratios (ICR), correction factors (sensitivity factors), ketone testing protocols, target meal and snack times, and emergency glucagon orders.
- Individualized Healthcare Plan (IHP) & Emergency Action Plan (EAP): Nursing care plans developed by the Registered Nurse (RN) translating the medical orders in the DMMP into daily school nursing actions, self-care assessment parameters, and step-by-step emergency procedures for unlicensed staff.
- Section 504 Plan: Legally binding accommodation plan under the Rehabilitation Act of 1973. Key 504 accommodations include: unrestricted access to water and restroom facilities, permission to test blood glucose and eat snacks anywhere on campus (including during standardized testing), extra time for exams when experiencing hypo- or hyperglycemia, provision of trained staff on field trips, and trained UAP coverage when the school nurse is off-site.
Hypoglycemia Management and the 15-15 Protocol
Hypoglycemia is defined clinically as a blood glucose level <70 mg/dL (or higher if specified in a student's DMMP). It represents the most frequent acute medical emergency in students with T1D. Pathophysiologically, falling glucose triggers sympathoadrenal discharge followed by neuroglycopenia.
Clinical Manifestations
- Adrenergic (Mild-to-Moderate): Diaphoresis, shakiness, tremors, tachycardia, palpitations, pallor, anxiety, hunger.
- Neuroglycopenic (Moderate-to-Severe): Headache, difficulty concentrating, irritability, slurred speech, blurred vision, dizziness, confusion, lethargy, combativeness.
The Standard 15-15 Treatment Rule
When a student presents with blood glucose <70 mg/dL and is conscious, alert, and able to swallow:
| Step | Action | Practical Examples |
|---|---|---|
| 1. Administer Carbs | Provide exactly 15 grams of fast-acting simple carbohydrates | • 4 oz (1/2 cup) fruit juice (e.g., orange or apple)<br/>• 3 to 4 commercial glucose tablets<br/>• 1 tube (15g) glucose gel<br/>• 6 oz (1/2 can) regular soft drink (not diet) |
| 2. Rest & Wait | Have student rest in place for 15 minutes. Never send a hypoglycemic student unescorted to the health office. | Maintain safety and reduce metabolic glucose consumption. |
| 3. Recheck BG | Re-evaluate capillary blood glucose after 15 minutes. | • If BG remains <70 mg/dL, repeat 15g simple carbs and recheck in 15 min.<br/>• If BG ≥70 mg/dL, proceed to Step 4. |
| 4. Maintenance | Provide a complex carbohydrate and protein snack if the next regular meal is >30-60 minutes away. | • Whole grain crackers with cheese or peanut butter.<br/>• Half a sandwich or graham crackers with milk. |
Severe Hypoglycemia and Emergency Glucagon Administration
Severe hypoglycemia involves loss of consciousness, seizure activity, or an inability to safely swallow simple oral carbohydrates. This is a life-threatening emergency caused by neuroglycopenic brain failure.
Emergency Protocol Actions
- Do NOT Insert Anything into the Mouth: Never force liquid, gel, or food into an unconscious or seizing student's mouth due to extreme aspiration risk.
- Administer Glucagon Immediately:
- Nasal Powder Glucagon (Baqsimi 3 mg): Single-use device inserted into one nostril. Press plunger all the way in until line disappears. Does not require active inhalation or nasal patency.
- Subcutaneous / Intramuscular Glucagon (Gvoke autoinjector or traditional kit): Inject 0.5 mg (for weight <25 kg) or 1.0 mg (for weight ≥25 kg) into outer thigh or upper arm.
- Positioning (Vomiting Prevention): Immediately position the student in the side-lying (recovery) position. Glucagon stimulates hepatic glycogenolysis but also directly triggers the central chemoreceptor trigger zone, inducing rapid post-injection vomiting in over 50% of recipients.
- Emergency Services: Call 911 / EMS immediately, notify parents, recheck capillary blood glucose, and monitor vital signs until EMS arrives.
Hyperglycemia and Diabetic Ketoacidosis (DKA) Prevention
Hyperglycemia is defined as blood glucose elevation above the student's target range (typically >250 mg/dL). Causes include missed insulin doses, pump site failure, illness, infection, emotional stress, or excess carbohydrate consumption.
Clinical Protocol for BG >250 mg/dL
- Check Ketones: Whenever blood glucose is >250-300 mg/dL (or per DMMP), the nurse must check urine ketones (dipstick) or blood beta-hydroxybutyrate. Ketones indicate that the body is metabolizing fat for energy due to severe cellular insulin deprivation.
- Hydration: Encourage frequent sipping of water or non-caloric fluids to promote renal clearance of excess glucose and ketones.
- Insulin Correction: Administer supplemental correction insulin via syringe, pen, or pump as calculated by the DMMP correction formula:
(Current BG - Target BG) / Correction Factor. - Physical Activity Prohibition: CRITICAL SAFETY RULE: If blood glucose is >250 mg/dL AND moderate-to-large ketones are present, physical education, recess, and athletic participation are STRICTLY PROHIBITED. Exercise increases circulation of stress hormones (cortisol, epinephrine, glucagon), which accelerates lipolysis and ketone production, rapidly escalating the student into life-threatening DKA (manifested by Kussmaul respirations, fruity acetone breath odor, severe abdominal pain, and metabolic acidosis).
Diabetes Technology: CGMs, Insulin Pumps, and UAP Delegation
Continuous Glucose Monitors (CGMs) & Insulin Pumps
- CGMs (e.g., Dexcom, Freestyle Libre): Measure glucose in interstitial fluid, updating every 1-5 minutes. Nurses must recognize that during rapid glucose shifts, interstitial fluid lags behind capillary blood glucose by 5 to 15 minutes. A fingerstick BG check is required if CGM readings do not match clinical symptoms or before treating severe hypoglycemia.
- Insulin Pumps (Basal/Bolus): Deliver continuous subcutaneous micro-doses of rapid-acting insulin (basal) and user-initiated meal/correction doses (bolus). If unexplained hyperglycemia persists after a correction bolus, inspect pump infusion site for kinking, disconnection, or occlusion; prepare to give correction insulin via traditional injection.
UAP Level-3 Training Standards
The American Diabetes Association (ADA) and NASN recommend a 3-Tiered Training Model in schools:
- Level 1 (All Staff): General awareness of diabetes signs and emergency contact numbers.
- Level 2 (Classroom Teachers / Bus Drivers): Recognition of hypoglycemia/hyperglycemia symptoms and basic emergency response.
- Level 3 (Designated UAP Volunteers): Intensive, skill-verified training delivered by the RN. Level 3 UAPs are authorized under RN supervision to perform fingerstick blood glucose tests, check urine ketones, count carbs, assist with insulin pump boluses, and administer emergency Baqsimi/glucagon.
A 9-year-old student with Type 1 diabetes enters the health office complaining of shakiness and sweating. Capillary blood glucose is 62 mg/dL. The student is alert and oriented. Which action by the school nurse adheres to the 15-15 rule?
A student with Type 1 diabetes is found unresponsive on the playground. The school nurse administers Baqsimi 3 mg nasal powder. What is the immediate next nursing priority before EMS arrives?
During afternoon recess, a middle school student with Type 1 diabetes has a blood glucose reading of 285 mg/dL. Dipstick testing reveals moderate urine ketones. Which intervention is mandatory?
When coordinating diabetes care delegation under the ADA/NASN 3-Tiered Framework, which task may the school nurse delegate to a Level-3 trained Unlicensed Assistive Personnel (UAP)?