
Learners will recognise and act on the metabolic emergencies — DKA, HHS, hypoglycemia, thyroid storm, and adrenal crisis — with the rigour these conditions demand, while learning to see lifestyle-driven type 2 diabetes as a frequently preventable and often reversible condition in which the plate, not the prescription pad, is the most under-used lever.
“Save the life in front of you first — treat the DKA, the crashing glucose, the storm — with everything medicine has. Then ask the harder question the emergency hides: did this have to happen at all? For most type 2 diabetes, the answer lives on the plate. We escalate the prescription long before we have honestly tried the food. Make humans human again — treat the crisis, then treat the cause.”
| Field | Detail |
|---|---|
| Module | 10 of 12 — Endocrine / Metabolic |
| Contact Hours | 3.0 (Pending ANCC / ACCME / CARNA approval) |
| Target Audience | RNs, LPNs, RPNs, NPs, Paramedics, ER & ICU staff, Diabetes Educators, Dietitians, Licensed Clinicians |
| Publication | WestNet Medical Publications • Catalog 731985456642 • ISBN Pending |
| Disclosure | Educational content. Does not replace facility protocol, physician orders, local emergency algorithms, or jurisdictional scope of practice. Glucose values are quoted in mmol/L with mg/dL equivalents. |
This module carries two duties at once, and refuses to choose between them. The first is uncompromising emergency rigour: when a patient is in diabetic ketoacidosis, when their glucose is crashing, when a thyroid storm or an adrenal crisis is unfolding, there is no room for philosophy — only for fast, correct, protocol-driven action. Half of this book exists to make that action automatic.
The second duty is to ask the question the emergency conveniently buries: did this have to happen? For type 1 diabetes the answer is no — it is an autoimmune condition, insulin is non-negotiable and lifelong, and nothing in this module suggests otherwise. But for the far larger population living with type 2 diabetes, the honest answer is often yes, it was largely preventable, and in many people, even after diagnosis, it is reversible.
Treat the crisis with everything medicine has — and then treat the cause. The default pathway tends to escalate medications first while the most powerful upstream lever, the plate, goes under-used. This module asks clinicians to be brilliant in the emergency and curious about the cause.
The single most consequential clarification in this entire module: type 1 and type 2 diabetes are different diseases that happen to share a number. Conflating them harms both groups. Type 1 patients hear careless “you can reverse it with diet” talk and feel blamed for an autoimmune illness they did not cause. Type 2 patients hear “it is chronic and progressive” and lose the hope — and the agency — that the evidence now says many of them deserve.
Type 1: insulin is life support — respect it absolutely. Type 2: the body is, in many cases, asking to be un-flooded — respect that too. Everything that follows about reversal applies to lifestyle-driven type 2 only. When this module says “diabetes” without qualification in an emergency, treat the patient in front of you regardless of type.
You cannot manage a diabetic emergency — or an inpatient on insulin — without knowing what the insulin in the chart actually does and when. The single most common, most dangerous error is mismatching the insulin’s peak to the patient’s food and activity. Know the onset, peak, and duration cold.
| Category | Examples | Onset | Peak | Duration |
|---|---|---|---|---|
| Rapid-acting | lispro, aspart, glulisine | 10–20 min | 1–2 h | 3–5 h |
| Short / regular | regular (R) | 30–60 min | 2–4 h | 5–8 h |
| Intermediate | NPH | 1–2 h | 4–10 h | 10–18 h |
| Long-acting (basal) | glargine, detemir, degludec | 1–4 h | minimal / flat | 20–42 h |
Only regular and rapid-acting insulins are given IV — never long-acting. A rapid-acting dose given without food on the way is a hypoglycemia event waiting for a peak. In DKA, the insulin infusion is short-acting; the patient’s usual basal insulin should generally continue to prevent rebound ketosis when the drip stops. Never confuse units (U) with millilitres, and always read the concentration (U-100 vs U-500).
DKA is an absolute or relative insulin deficiency that flips the body into fat-burning crisis: without insulin, cells starve despite high blood glucose, fat is broken into ketones, and the blood turns acidic. It is most classic in type 1 (sometimes the first presentation) but does occur in type 2 under severe stress. It develops over hours — faster than HHS — and it kills when it is missed.[3]
1. Hyperglycemia (usually >13.9 mmol/L / 250 mg/dL, though “euglycemic DKA” on SGLT2 inhibitors can be near-normal) • 2. Ketosis (blood β-hydroxybutyrate elevated; urine ketones positive) • 3. Metabolic acidosis (pH <7.3, bicarbonate <18, raised anion gap).
Bedside red flags: the three P’s — polyuria, polydipsia, weight loss — plus nausea, vomiting, and abdominal pain (often mistaken for a surgical abdomen). Look for Kussmaul breathing (deep, sighing, compensatory hyperventilation) and a fruity/acetone breath. The patient is volume-depleted: dry, tachycardic, hypotensive. Altered mental status is a late and ominous sign.
The classic mnemonic is the 5 I’s: Infection, Infarction (MI/stroke), Insufficient insulin (missed doses, pump failure), Intoxication, and Initial presentation of new diabetes. Treating the DKA without finding and treating the trigger lets it relapse.
Euglycemic DKA — acidosis and ketosis with only mildly raised glucose — is increasingly seen with SGLT2 inhibitors, pregnancy, and starvation. If the patient is acidotic and ketotic, do not let a “normal-ish” glucose talk you out of the diagnosis.
The order matters. The single most dangerous mistake is starting insulin before fluids and before knowing the potassium. Follow facility protocol; the principles below are universal.
A young type 1 patient arrives in florid DKA — vomiting, Kussmaul breathing, glucose 32 mmol/L. Insulin is drawn up and the team is ready to start the drip. The initial potassium comes back at 3.2 mmol/L.
Resolution: do not start the insulin yet. Insulin drives potassium out of the serum and into the cells, and in an already-depleted patient that can crash the K+ into a fatal hypokalemia and arrhythmia. Give fluids and replace potassium first; once K+ is safely above 3.3 mmol/L, begin the insulin infusion with close, repeated K+ monitoring.
Patients are litres down. Start isotonic crystalloid to restore volume and perfusion before, or alongside, insulin. This alone lowers glucose substantially.
Total-body potassium is depleted even when the serum level looks normal or high. Insulin pushes K+ into cells. Give insulin to a low-K+ patient and you can precipitate fatal arrhythmia. Check K+ first.
Continuous IV regular insulin. It does not just lower glucose — it switches off ketogenesis. Do not stop it the moment glucose normalises; the gap may still be open.
When glucose falls to ~14 mmol/L (250 mg/dL), add dextrose to the fluids so you can keep the insulin running to clear ketones without causing hypoglycemia.
• Starting insulin before fluids or before knowing K+. • Stopping the insulin drip when glucose normalises but the gap is still open. • Stopping IV insulin without overlapping subcutaneous basal insulin — causing rebound DKA. • Over-rapid correction risking cerebral edema (highest risk in children — watch for headache and deterioration). • Routine bicarbonate (rarely indicated; reserved for severe acidosis per protocol).
These are ICU-level emergencies — escalate now.
HHS is DKA’s slower, more insidious cousin, classically in older adults with type 2 diabetes. Enough insulin remains to suppress ketogenesis, so there is little or no ketosis or acidosis — but glucose climbs to extreme levels over days, dragging water with it into the urine. The result is profound dehydration and a dangerously high serum osmolality.[3]
| Feature | DKA | HHS |
|---|---|---|
| Typical patient | Type 1 (or stressed T2) | Older type 2 |
| Onset | Hours | Days |
| Glucose | Usually >13.9 mmol/L (250 mg/dL) | Often >33 mmol/L (600 mg/dL) |
| Ketones / acidosis | Marked | Minimal / absent |
| Osmolality | Variable | Very high (>320) |
| Mental status | Often alert until late | Frequently obtunded |
| Dominant problem | Acidosis + ketones | Dehydration + hyperosmolality |
HHS is even more fluid-dependent than DKA — volume deficits are larger. Fluids are the cornerstone; insulin needs are often lower. Correct the osmolality gradually to avoid cerebral edema, replace potassium, and hunt aggressively for the precipitant (infection is the most common). Mortality is higher than DKA — treat it with respect.
Hypoglycemia (blood glucose <4.0 mmol/L / 70 mg/dL) is the most common acute diabetic emergency and the one you will see most. The brain runs almost exclusively on glucose; minutes matter. The cardinal rule is simple: treat the patient, not the number — if you suspect it and cannot test immediately, treat.
Adrenergic (early): shakiness, sweating, palpitations, hunger, anxiety, pallor. Neuroglycopenic (later): confusion, slurred speech, behaviour change, drowsiness, seizure, coma. In patients on beta-blockers or with hypoglycemia unawareness, the early warnings may be blunted — suspect it sooner.
| At-a-Glance | Conscious & can swallow | Unconscious / cannot swallow | Sick-day overlay (any diabetic) |
|---|---|---|---|
| First action | 15 g fast carbs (the 15–15 rule) | Nothing by mouth — IV dextrose, or glucagon if no line | Never stop basal insulin in type 1, even when not eating |
| Recheck | Recheck glucose at 15 min; repeat 15 g if still <4.0 mmol/L (70 mg/dL) | Recheck at ~10–15 min; position to protect airway | Check glucose more often; check ketones if type 1 or unwell |
| Then | Longer-acting snack / next meal to prevent relapse | On waking & able to swallow: oral carbs + a snack | Keep sipping fluids; do not skip insulin — illness raises glucose |
| Escalate when | Two cycles fail to correct, or consciousness falls | No IV access and no response to glucagon; seizure; airway risk | Persistent vomiting, rising ketones, dehydration, or any red flag in §05 |
This grid is a memory aid that consolidates §05 and §07. Specific carbohydrate amounts, glucagon route, dextrose concentration, and ketone thresholds must be verified against your current local protocol and prescriber orders before acting. The decision logic is universal; the exact numbers and products are not.
Thyroid storm is decompensated, life-threatening hyperthyroidism — a hypermetabolic state that can kill through cardiac failure or hyperthermia. It is usually a known or undiagnosed thyrotoxic patient tipped over by a precipitant: infection, surgery, trauma, childbirth, iodine load, or abrupt withdrawal of antithyroid medication.
Fever (often high) • tachyarrhythmia (sinus tachycardia, atrial fibrillation, often out of proportion) • CNS: agitation, delirium, psychosis, seizure, coma • GI: vomiting, diarrhoea, jaundice • heart failure. The Burch–Wartofsky score helps quantify likelihood — but do not wait for labs to treat a clear clinical picture.
Management is multi-pronged and time-critical: support ABCs and cool actively; beta-blockade (e.g. propranolol) for the adrenergic storm; an antithyroid drug (propylthiouracil or methimazole) to stop new hormone synthesis; iodine given after the antithyroid drug to block hormone release; and corticosteroids. Treat the precipitant. This belongs in a critical-care setting.
Give the antithyroid drug before iodine — iodine given first can fuel further hormone synthesis. Aspirin is avoided as an antipyretic in storm (it displaces thyroid hormone from binding proteins). Mortality is high; escalate early.
Adrenal crisis is acute, life-threatening cortisol deficiency. It strikes patients with known adrenal insufficiency (Addison’s) or — very commonly and easily missed — patients on long-term steroids whose dose is not increased during illness or surgery, or is stopped abruptly. The body cannot mount a stress response, and circulation collapses.
Hypotension and shock that do not respond to fluids and vasopressors is adrenal crisis until proven otherwise. Add: profound weakness/fatigue, nausea, vomiting, abdominal pain, fever, confusion. Labs may show hyponatremia, hyperkalemia, and hypoglycemia. Hyperpigmentation suggests chronic primary Addison’s.
Hydrocortisone is the priority and must not be delayed for confirmatory tests (a random cortisol can be drawn first if it does not slow treatment). Give IV hydrocortisone immediately, aggressive IV fluids (saline with dextrose to correct hypoglycemia), correct electrolytes, and find and treat the precipitant. The response to steroid is often rapid and lifesaving.
Every steroid-dependent patient should know the sick-day rules: double the oral dose during illness, and carry an emergency injectable. A huge share of adrenal crises are preventable with that one conversation — root-cause care applies in the emergency world too.
A universal first-response sequence for any suspected metabolic or endocrine emergency. It does not replace condition-specific protocols — it makes sure nothing critical is skipped in the first minutes.
With the patient stabilised, the harder work begins. For lifestyle-driven type 2 diabetes, the standard pathway tends to start a medication, then add another, then a third — a quiet escalation that can run for years. None of these drugs is wrong; many are genuinely protective. But there is a lever that frequently outperforms the early prescriptions and is, too often, mentioned only in passing: the plate.
Type 2 diabetes is, at its core, a system overwhelmed by more fuel than it can store and use. It is no surprise, then, that reducing the fuel load — through dietary change and weight loss — can in many people return blood glucose toward normal, sometimes off medication entirely. This is not fringe thinking; it is now mainstream evidence (see §12).[2,4]
Before reflexively adding the next agent, ask whether a serious, supported dietary trial has truly been offered. “Food-first” does not mean “drug-never” — it means giving the most powerful lever a fair, early turn.
Loss of visceral and liver fat is closely tied to type 2 remission. Frame weight change as treating the disease’s engine — with dignity, never blame.
As glucose improves, medication — especially insulin and sulfonylureas — must be reduced to avoid hypoglycemia. Reversal and deprescribing go hand in hand (see Module 06).
Give the patient back control of their own metabolism. “Make humans human again”: a person empowered to change their plate is treated as an agent, not a passive recipient of prescriptions.
This is not a criticism of clinicians or of medicine, which saves lives daily — it is a gentle re-ordering of the toolkit. Medications remain essential for many, and for type 1 always. The argument is only this: for lifestyle-driven type 2, the food conversation deserves to come first and seriously, not last and in passing.
How this is said decides whether a patient feels blamed or empowered. The goal is dignity and agency — offering a path, never assigning fault. Use the patient’s own words and readiness; treat the person, not the label.
Open the door without judgement and let the patient lead. Frame food as a powerful tool they own.
Say: “Food is one of the strongest tools we have for this — would you be open to looking at it together?”Numbers describe the system, not the worth of the person. Pair every number with a next step.
Say: “This number tells us what your body is doing right now — it’s information we can work with, not a report card.”Explain why weight matters biologically — visceral and liver fat — without shame or moralising.
Say: “Losing some weight can take pressure off the organs driving this. Even a modest, steady change can shift things.”Frame dose reduction as a sign of progress and a safety step, planned together (see Module 06).
Say: “As your own body takes over more of the work, we’ll lower these medicines on purpose — safely, and together.”The myth: “Type 2 diabetes is a permanent, progressive disease whose only honest answer is more medication over time.” The evidence: for many people with lifestyle-driven type 2, the condition is largely diet-, weight- and metabolically driven, and can improve or even remit with root-cause care — not only with escalating drugs.[1,2,4] This is not a criticism of medication, which remains essential for many and for type 1 always. It is an invitation to treat the person, not the label — to “make humans human again” by giving the plate a fair, early turn alongside excellent medical care.
Clinicians are sometimes wary of the word “reversal,” fearing it overpromises. The wariness is healthy, but the evidence has moved. Substantial, durable remission of type 2 diabetes — defined as normal blood glucose maintained without glucose-lowering medication — is now a recognised outcome in the medical literature and in major diabetes-association consensus statements.
Intensive lifestyle and dietary programmes — substantial calorie restriction, structured low-carbohydrate eating, and significant weight loss — have put a meaningful proportion of people with type 2 diabetes into remission, with the best results early in the disease and proportional to weight lost. The mechanism is consistent with the “twin-cycle” understanding: reducing fat in the liver and pancreas restores insulin response.[2,4]
Remission is not guaranteed, not permanent without maintenance, and not appropriate to promise to every patient — and it does not apply to type 1. But it is real, it is evidence-based, and withholding the possibility from a newly diagnosed type 2 patient denies them a legitimate, often preferred, path. Offer it as one credible option, supported and monitored — not as a slogan.
Patients increasingly ask about whole-food and botanical approaches, and a food-first ethic means engaging honestly rather than dismissively. The humble dandelion (Taraxacum officinale) is one worth knowing: its leaves are a traditional bitter green and its root is a dietary source of inulin, a fermentable fibre that feeds the gut microbiome and modestly blunts post-meal glucose rises. Preliminary preclinical work and limited early human data have explored effects on glycemic control and hepatic (liver) handling of fat — biologically plausible given the liver’s central role in type 2 — but the human evidence remains early and not yet practice-changing.[7]
Dandelion belongs in the food-first column as a high-fibre whole food and a point of patient engagement — not as a treatment. It is an adjunct of interest, never a substitute for insulin or any indicated glucose-lowering therapy. No patient should reduce or stop prescribed medication to “try dandelion,” and in type 1 this would be dangerous. Used as a vegetable or tea by an interested patient, alongside — not instead of — their care plan, it is reasonable; positioned as a cure, it is not.
Evidence is preliminary; do not extrapolate to dosing or therapeutic claims. As a botanical, dandelion has plausible interactions to screen for: it may add to the glucose-lowering effect of antidiabetic drugs (additive hypoglycemia risk), has a mild diuretic action that can compound prescribed diuretics and affect fluid/electrolyte and lithium levels, and may interact with drugs cleared by the liver. Caution in those with gallbladder disease, bile-duct obstruction, or ragweed/Asteraceae allergy. Always reconcile against current medications and verify against local protocols and a pharmacist before suggesting it.
Root-cause type 2 care is a team effort across this series. Pair this module with Module 03 — Clinical Nutrition & Metabolic Support for the food-first diet detail (including fibre and inulin sources), and Module 05 — Wound Care & Skin Integrity for the diabetic foot ulcers and impaired healing that hyperglycemia drives. See also Module 06 — Polypharmacy & Deprescribing as glucose improves.
Under pressure, the five core emergencies must be separated fast. Tap through each profile to drill the picture: the classic presentation, the one trap that catches clinicians, and the first move that matters most. These are composite, anonymous teaching cases — not any single patient.
Every one of these is salvageable when caught early and lethal when missed. The cheapest diagnostic test on the unit — a capillary glucose — sits at the front of all of them. Check it first, every time.
Diabetes is buried under folklore — some of it harmful at the bedside, some of it stealing hope from people who could do better. Tap any card to flip the myth into what the evidence actually says, and why it matters in practice.
A myth about type 1 can get an insulin-dependent patient hurt. A myth about type 2 can rob a patient of a genuine path to remission. Precision here is not pedantry — it is care.
DKA is missed when its features are seen one at a time instead of as a pattern. Check each finding you observe in a hyperglycemic, unwell patient — the tool tallies the picture and flags the urgency. It supports clinical judgement and bloodwork; it never replaces them.
This is a pattern-recognition prompt, not a diagnostic score. The diagnosis of DKA is confirmed by labs — glucose, blood/urine ketones, venous gas (pH, bicarbonate, anion gap). If features cluster, escalate and get the bloods now; do not wait for every box to tick.
For a person with lifestyle-driven type 2 diabetes, how realistic is remission — and where should the food-first conversation sit relative to the next medication? Set the sliders and check what applies; the readout bands the remission potential and sketches a food-first plan. This is a motivational teaching aid for type 2 only — never type 1, and never a substitute for individualised clinical care.
A lower score is never a verdict of failure — it simply means medication may carry more of the load for now while food and weight still help. A higher score means the food-first conversation has earned its place at the front. Either way, the plate is part of the plan. Pair with Module 03 (Clinical Nutrition) and Module 06 (Deprescribing).
Section 03 covered what each insulin does. This section covers how the pieces fit together into a regimen — the mental model that keeps an inpatient or an outpatient safe. Healthy physiology delivers insulin in two patterns: a steady basal trickle that holds glucose level between meals and overnight, and sharp bolus (prandial) surges that cover the carbohydrate in each meal. Every regimen is an attempt to imitate that pattern with the tools available.
Long-acting insulin (glargine, detemir, degludec) covering the fasting and overnight need. It should not be the lever you push to correct a single high reading — it sets the baseline.
Rapid- or short-acting insulin timed to meals to cover the carbohydrate load. Given without food on the way, it becomes a hypoglycemia event waiting for its peak.
A supplemental rapid-acting dose to bring an already-high glucose back toward target, layered on top of the meal bolus — not a substitute for an inadequate basal.
Good control comes from adjusting the regimen to recurring patterns, not chasing each number. Reactive “sliding-scale-only” dosing without basal is a classic inpatient failure mode.
Basal-bolus (multiple daily injections): one basal injection plus a rapid-acting bolus at each meal — the most physiologic, flexible approach. Premixed: fixed basal/bolus ratios in fewer injections — simpler but less flexible. Insulin pump (CSII): continuous rapid-acting delivery with programmable basal rates and meal boluses. Basal-only: sometimes added to oral agents in type 2. Each trades flexibility against simplicity.
This module teaches concepts, not numbers. Specific starting doses, titration steps, and unit calculations must be set by the prescriber and verified against current local protocols and individual orders. Universal safety rules: never give long-acting insulin IV; read the concentration (U-100 vs U-500); confirm units versus millilitres; do not omit basal insulin in type 1 even when the patient is not eating; and time prandial insulin to food that is actually arriving.
Most serious insulin errors are not exotic — they are basal/bolus confusion, a correction dose stacked on a too-recent prior dose (“insulin stacking”), or a meal bolus given before a tray that never comes. Understanding the architecture of a regimen is what lets you catch the order that does not make sense before it reaches the patient.
Type 2 diabetes is managed with a growing toolbox of oral and injectable agents beyond insulin. You do not need to prescribe them to care for these patients safely — but you do need to know, for each class, what it does, what it can do to your patient, and how it changes an emergency. Tap any card to flip from the class to its one most clinically important caution. Mechanisms and cautions only — no dosing.
None of these agents is “wrong,” and several (notably SGLT2 inhibitors and GLP-1 receptor agonists) carry genuine cardiovascular and renal benefit. The WestNet point is one of sequencing: for lifestyle-driven type 2, the most powerful lever — the plate — deserves a fair, early turn alongside, not after, the escalating pharmacology (see §11–§12).
SGLT2 inhibitors can cause euglycemic DKA — ketoacidosis with a near-normal glucose (revisit §04). Sulfonylureas (and insulin) can cause prolonged, recurrent hypoglycemia that outlasts a single dose of treatment — these patients need extended observation. Always reconcile the full medication list, and verify every class effect against current local protocols and a pharmacist.
Two ideas underpin flexible insulin dosing, and clinicians who understand them make far fewer errors reading an order. The insulin sensitivity factor (ISF), or “correction factor,” estimates how far one unit of rapid-acting insulin lowers glucose. The insulin-to-carbohydrate ratio (ICR) estimates how many grams of carbohydrate one unit covers. The demonstration below shows the logic — it is a teaching model, deliberately not a dosing calculator.
The reason to understand ISF and ICR is defensive: it lets you recognise when a written correction dose is wildly out of step with the glucose, when a meal bolus does not match the carbohydrate on the tray, or when a correction is being stacked on insulin given an hour ago. The arithmetic belongs to the prescriber and the protocol — the sense-check belongs to everyone at the bedside.
Glucose monitoring has moved beyond the fingerstick. Continuous glucose monitors (CGM) read interstitial glucose every few minutes through a subcutaneous sensor, producing a trace rather than a snapshot. This has reshaped how control is judged: the conversation is shifting from a single quarterly HbA1c toward time-in-range (TIR) — the percentage of the day glucose spends within target.
| Metric | What it tells you | The catch |
|---|---|---|
| HbA1c | Average glucose over ~3 months | Hides swings — the same average can mask dangerous highs and lows cancelling out |
| Time-in-range (TIR) | % of day within target (commonly 3.9–10 mmol/L / 70–180 mg/dL) | Needs CGM data; targets are individualised |
| Time-below-range (TBR) | % of day spent low — the safety metric | Even a small % matters; minimise it first |
| Glucose variability | How much glucose swings around the average | High variability is harder to manage and more symptomatic |
A CGM reading of 5.0 mmol/L with a steeply falling arrow is a developing hypoglycemia event; the same 5.0 with a flat arrow is reassuring. CGM also drives alarms that can catch nocturnal lows and hypoglycemia unawareness (see §07). The number alone is no longer the whole story — direction matters.
Interstitial glucose lags capillary blood by several minutes — most important when glucose is changing fast. During a suspected acute low or in a metabolic emergency, confirm with a capillary (or lab) glucose before acting on a CGM value, and follow local protocol. Some sensors are affected by certain medications; verify locally.
CGM is also a powerful teaching tool. When a patient sees their own glucose spike after a sugary drink and stay flat after a whole-food meal, the plate stops being abstract advice and becomes visible feedback. Used with dignity, it turns the patient into the expert on their own metabolism — exactly the agency this module argues for.
A striking share of the emergencies in this module — DKA, HHS, and adrenal crisis alike — are precipitated by an everyday illness that was not managed well at home. Acute illness, infection, and physiological stress raise counter-regulatory hormones, which push glucose up and increase insulin needs precisely when appetite and fluid intake fall. Sick-day rules are the patient-facing education that prevents many of these admissions.
For patients on long-term steroids, the sick-day rule is different but just as vital: the dose usually needs to be increased during significant illness, and an emergency injectable should be available. A single clear sick-day conversation prevents a large share of adrenal crises — root-cause care delivered before the ambulance is ever called.
Escalate to urgent assessment for: persistent vomiting or inability to keep fluids down, rising or moderate-to-high ketones, glucose that stays very high despite correction, drowsiness or confusion, or any of the DKA red flags in §05. The exact thresholds and products are individual — verify against the patient’s own written sick-day plan and current local protocols.
Endocrine emergencies are, to a large degree, electrolyte emergencies wearing a hormonal name. The potassium shift in DKA, the sodium and osmolality derangement in HHS, the hyperkalemia and hyponatremia of adrenal crisis — these are not side issues; they are often what actually kills or saves the patient. This section consolidates the electrolyte thinking that runs through the whole module.
| Electrolyte | Where it bites | The principle |
|---|---|---|
| Potassium (K+) | DKA, HHS, adrenal crisis | In DKA total-body K+ is depleted even when serum looks normal/high; insulin drives it intracellularly. Check and replace BEFORE insulin if low (§05). Adrenal crisis tends toward hyperkalemia. |
| Sodium (Na+) | HHS, adrenal crisis, SIADH/DI | Hyperglycemia falsely lowers measured sodium; correct osmolality gradually to avoid cerebral edema or osmotic demyelination. Adrenal crisis tends toward hyponatremia. |
| Glucose | All of the above | Both the cause and a clue — but resolution of DKA is the anion gap closing, not glucose alone (§05). |
| Bicarbonate / pH | DKA | Tracks the acidosis. Routine bicarbonate replacement is rarely indicated and reserved for severe acidosis per protocol. |
If you remember a single electrolyte principle from this module, make it this: in DKA and HHS, know the potassium before you start the insulin. Insulin drives K+ into cells; in an already-depleted patient that can precipitate a fatal arrhythmia. This is the thread that connects §05, §06, §10, and this section.
Whether it is osmolality in HHS or sodium in any setting, the cross-cutting rule is gradual correction. Over-rapid shifts risk cerebral edema (especially in children with DKA) or osmotic demyelination with sodium. Frequent monitoring, modest targets, and patience are safer than speed. Exact rates and targets are protocol-driven — verify against current local protocols.
Between the emergencies lies the slow damage. Years of elevated glucose injure small and large blood vessels and nerves, producing the classic microvascular triad — retinopathy, nephropathy, and neuropathy — plus accelerated macrovascular disease (heart attack, stroke, peripheral arterial disease). The good news is that most of this is screenable and modifiable: the same root-cause levers that reverse early type 2 also slow or prevent these complications.
The leading cause of working-age blindness in many countries, yet largely silent until advanced. Principle: regular dilated retinal screening catches it while it is still treatable. Glucose and blood-pressure control slow progression.
Diabetes is a leading cause of chronic kidney disease. Principle: screen with urine albumin and kidney function. Early detection changes management — certain agents (e.g. SGLT2 inhibitors) are protective.
Distal symmetric “stocking-glove” numbness, pain, or loss of protective sensation — the gateway to the diabetic foot (§24). Also autonomic forms. Principle: screen the feet and ask about symptoms.
The biggest killer in type 2. Principle: manage the whole cardiovascular package — glucose, blood pressure, lipids, smoking — not glucose in isolation.
The recurring theme is that these complications are silent until they are not. Structured, periodic screening — eyes, kidneys, feet, and the cardiovascular risk factors — is what converts a hidden problem into a treatable one. The schedules and tests are protocol-defined; verify against current local protocols (ADA Standards of Care) for who is screened, how, and how often.
None of this is separate from the food-first argument. Improving glucose, weight, and blood pressure through the plate and lifestyle does not just chase a number — it directly slows the very complications that make diabetes feared. Reversing early type 2 is, in part, complication prevention by another name.
The diabetic foot is where neuropathy, vascular disease, and impaired healing converge into one of the most preventable causes of amputation in medicine. Loss of protective sensation means an injury is not felt; poor circulation means it does not heal; and high glucose means it readily infects. A small unnoticed wound can become a limb-threatening ulcer with frightening speed — and almost all of it is preventable with screening and education.
The single most effective intervention is teaching the patient to look at their feet every day (a mirror for the soles), wear protective footwear, never walk barefoot, and report any wound, blister, colour change, or warmth early. A neuropathic patient cannot rely on pain to warn them — sight and routine replace sensation.
An ulcer with spreading redness, warmth, swelling, discharge, foul smell, or systemic features (fever, rising glucose, malaise) is a limb- and life-threatening emergency — possible deep infection, abscess, or osteomyelitis. These need urgent assessment, not a dressing change and a wait. Pair this section with Module 05 — Wound Care & Skin Integrity.
Sections 04–06 taught the two hyperglycemic crises separately. Under pressure they must be told apart fast, because the emphasis differs — DKA is dominated by acidosis and ketones, HHS by dehydration and osmolality. Read each clinical clue below and sort it to the syndrome it points toward. The tool keeps score and reveals the answer, with the reasoning.
Real patients do not read the textbook — mixed DKA/HHS pictures exist, and the management principles overlap heavily (fluids, potassium before insulin, treat the precipitant). The sorter trains the classic distinctions so the differences in emphasis — acid-base correction in DKA versus aggressive volume and gradual osmolality correction in HHS — come to mind quickly.
Section 08 covered thyroid storm, the hyperthyroid emergency. But thyroid dysfunction is a spectrum, and its other end — severe hypothyroidism — has its own life-threatening crisis. Recognising the everyday disorders also matters, because they masquerade as so many other conditions, from depression to atrial fibrillation to dementia.
| State | The picture | The crisis end |
|---|---|---|
| Hyperthyroidism | Weight loss, heat intolerance, tremor, palpitations/AF, anxiety, diarrhoea, exophthalmos (Graves’) | Thyroid storm (§08) — fever, tachyarrhythmia, delirium |
| Hypothyroidism | Fatigue, cold intolerance, weight gain, constipation, dry skin, bradycardia, low mood, slowed cognition | Myxedema coma — hypothermia, hypoventilation, bradycardia, altered consciousness |
The mirror image of thyroid storm: profound hypothyroidism decompensating into hypothermia, hypoventilation with CO₂ retention, bradycardia, hyponatremia, hypoglycemia, and depressed consciousness, often tipped over by cold, infection, or sedatives in an elderly patient. It is a critical-care emergency. Principles: support airway and breathing, gentle rewarming, treat the precipitant, give thyroid hormone replacement — and, crucially, cover with corticosteroids until coexisting adrenal insufficiency is excluded. Verify all agents and routes against current local protocols.
Thyroid disease is famous for hiding in plain sight. New atrial fibrillation, unexplained weight change, “depression” that will not lift, or apparent dementia in an older patient should all prompt the thought: check the thyroid. It is a cheap test for a condition that is eminently treatable once named.
Both ends of the thyroid spectrum can coexist with adrenal insufficiency, and giving thyroid hormone to a patient with undiagnosed adrenal failure can precipitate an adrenal crisis (§09). This is why corticosteroid cover features in the emergency management of myxedema coma — the endocrine emergencies are interlinked, and treating one in isolation can unmask another.
Beyond diabetes and the thyroid sit a cluster of endocrine conditions that any clinician should recognise in outline, because their emergencies are easily missed and their everyday forms quietly drive other problems. This section is a map, not a manual — enough to raise the right suspicion and escalate.
Sudden haemorrhage or infarction of the pituitary — severe headache, visual loss, eye-movement palsy, and acute hormone failure (notably cortisol). A neuro-endocrine emergency: it can present as, and demands, steroid cover like an adrenal crisis.
Cortisol excess — central weight gain, moon face, thin skin, easy bruising, hypertension, hyperglycemia, proximal weakness. Often iatrogenic from prescribed steroids. The flip side of the deficiency in §09.
A catecholamine-secreting tumour — episodic severe hypertension, headache, palpitations, sweating, pallor. Rare but dangerous; a cause of resistant or paroxysmal hypertension worth remembering.
Two sodium/water disorders that confuse the unwary. SIADH: too much ADH → water retention → hyponatremia. Diabetes insipidus: too little ADH (or renal resistance) → vast dilute urine → dehydration and hypernatremia. Despite the name, DI has nothing to do with glucose.
Several of these — pituitary apoplexy, undiagnosed Cushing’s on the path to crisis, an unrecognised adrenal contribution — share a final common danger: cortisol deficiency in a physiologically stressed patient. When shock or collapse does not fit the obvious diagnosis and will not respond as expected, the question “is this an endocrine emergency, and does this patient need steroid cover?” can be lifesaving (revisit §09).
These conditions are specialist territory for definitive diagnosis and treatment. The competency here is recognition and escalation — knowing the silhouette well enough to order the right test, protect the patient, and refer. Detailed work-up and management must follow current local protocols and specialist input.
Diabetes wears different faces at different stages of life, and two deserve specific mention because the rules shift: diabetes in pregnancy and diabetes in childhood. Getting these wrong has consequences for two patients at once, or for a child who will live with the condition for decades.
Glucose intolerance first recognised in pregnancy, driven by the insulin resistance of the placental hormonal environment. It matters because uncontrolled maternal glucose raises risks for both mother and baby — large-for-gestational-age infants, neonatal hypoglycemia, and delivery complications — and because it is a powerful signpost to future type 2 diabetes for the mother.
GDM is often managed first with nutrition and activity, with insulin added when targets are not met — a food-first sequence built into mainstream obstetric practice. And the postpartum period is a genuine prevention window: structured lifestyle support after a GDM pregnancy can reduce the later progression to type 2. The plate matters here for two futures at once.
Pregnancy lowers the threshold for ketosis — DKA can occur at lower glucose levels and develop faster, a form of euglycemic DKA (revisit §04). Glucose targets in pregnancy are tighter and agent choices are restricted. All of this is specialist, protocol-driven territory — verify against current local obstetric and diabetes protocols.
In children, new diabetes is most often type 1, and it not uncommonly announces itself as DKA — a previously well child with thirst, weight loss, bed-wetting, and then vomiting and rapid breathing. The classic three P’s in a child should prompt an immediate glucose check; missing it lets a treatable diagnosis become a critical one.
The most feared complication of pediatric DKA is cerebral edema, and children are far more vulnerable to it than adults. The classic warning triad is headache, bradycardia, and a falling level of consciousness during treatment (revisit §05). Fluid and correction rates in children are deliberately cautious for exactly this reason. Pediatric DKA must follow a dedicated pediatric protocol — verify locally.
A child’s type 1 diagnosis is a family event. Education, sick-day rules, hypoglycemia preparedness, and emotional support extend to parents, siblings, and school. And the same clarity this module insists on applies with extra force here: a child’s type 1 is autoimmune and lifelong — no diet reverses it, and insulin is never optional.
Sections 11 and 12 made the case that food-first care works and is mainstream. This section is the practical companion: which dietary approaches have evidence behind them for type 2, and how to support a patient through change without setting them up to fail. The honest headline is that several approaches work, and adherence matters more than ideology — the best diet is the evidence-aligned one a given patient can actually sustain.
Cutting sugary drinks, refined starches, and ultra-processed food lowers the post-meal glucose load directly — often the highest-yield first change.
Mechanism: less glucose in means less to dispose of, and less demand on a resistant system.Significant, supported weight loss — the DiRECT approach — drove drug-free remission proportional to weight lost, best early in disease.
Mechanism: losing liver and pancreatic fat restores the insulin response (the “twin-cycle” model).Building meals around vegetables, legumes, intact whole grains, and protein blunts glucose spikes and improves satiety and gut health.
Mechanism: fibre (including inulin sources, see §12) slows absorption and feeds the microbiome.A well-studied, sustainable pattern — vegetables, fish, olive oil, nuts, legumes — with strong cardiovascular and glycemic evidence.
Mechanism: improves insulin sensitivity and the whole cardiovascular risk package, not glucose alone.Patients and clinicians can waste energy arguing low-carb versus low-calorie versus Mediterranean. The evidence is more forgiving than the debate: multiple approaches produce remission and improvement, and the decisive factor is sustainability for this person, their culture, budget, and preferences. Meet the patient where they are; the best plan is the one they will still be following in a year.
Food-first is not “hand them a leaflet and hope.” The programmes that work share structure: realistic goals the patient chooses, regular review, dietitian or group support, attention to the food environment, and a deliberate plan to deprescribe glucose-lowering medication as control improves to avoid hypoglycemia (Module 06). Done well, this is rigorous medicine — not a soft alternative to it.
Specific macronutrient targets, calorie levels, and the suitability of any given pattern depend on the individual — kidney function, medications, pregnancy, eating history, and comorbidities all bear on the choice. Verify against current local protocols (ADA Standards of Care) and involve a dietitian. The principle is fixed; the prescription is personal.
Before the formal competency check, drill the high-stakes reflexes interactively. Each question has one best answer; pick it and the tool tells you immediately whether you are right and why. This is formative self-testing — instant feedback, no score recorded. Answer all to see your tally.
This quiz is for your own learning — it is not the assessed competency check (that is §32) and nothing here is recorded. The aim is to surface the reflexes that matter in a real emergency: glucose first, potassium before insulin, treat the patient not the number, and never stop a type 1 patient’s insulin.
The clinical positions in this module are drawn from peer-reviewed literature indexed by the U.S. National Library of Medicine (PubMed / PMC) and from the consensus statements of major clinical-guideline bodies.
Citations are provided as live links for verification and further reading. Journal references resolve to a PubMed search on the article title; guideline bodies link to their official homepage. This educational material summarises the cited evidence and does not replace the primary sources, facility protocol, or jurisdictional scope of practice.
Ten questions. Pass threshold: 7/10 for CE credit (upon accreditation approval).
| Accreditor | Status |
|---|---|
| ANCC (American Nurses Credentialing Center) | Application pending |
| ACCME (Accreditation Council for Continuing Medical Education) | Application pending |
| CARNA (College of Registered Nurses of Alberta) | Application pending |
| CPSA (College of Physicians & Surgeons of Alberta) | Planned |
Course Director: WestNet Medical Clinical Education Division
Publication: WestNet Medical Publications • WestNet Catalog 731985456642 • ISBN 978-0-XXXXX-XXX-X (Pending)
Platform: WestNet Unified Health Platform / HealthOS v3.6
| Adrenal (Addisonian) crisis | Acute, life-threatening cortisol deficiency causing fluid- and pressor-refractory shock. Priority treatment is immediate IV hydrocortisone — do not delay for tests. |
| Anion gap | Calculated marker of unmeasured acids (e.g. ketones). A raised gap is central to DKA; resolution of DKA means the gap has closed, not just that glucose is normal. |
| Basal insulin | Long-acting background insulin (glargine, detemir, degludec). Continued during a DKA infusion to prevent rebound ketosis when the drip stops. |
| DKA | Diabetic ketoacidosis — hyperglycemia + ketosis + metabolic acidosis from insulin deficiency. Onset over hours; classic in type 1. |
| Euglycemic DKA | DKA with only mildly elevated glucose — seen with SGLT2 inhibitors, pregnancy, starvation. A normal-ish glucose does not exclude DKA. |
| Glucagon | Hormone that raises blood glucose; given IM/SC/intranasal for severe hypoglycemia when the patient cannot swallow and no IV is available. |
| HHS | Hyperosmolar hyperglycemic state — extreme hyperglycemia and dehydration with minimal ketosis, over days, classically in older type 2 patients. Fluids are the cornerstone. |
| HealthOS | WestNet’s unified clinical platform for ER, inpatient, pharmacy, labs, and chronic-disease care across Canada and the USA. |
| Hypoglycemia | Blood glucose <4.0 mmol/L (70 mg/dL). Treat fast: 15–15 rule if conscious; IV dextrose or glucagon if not. |
| Kussmaul breathing | Deep, laboured, sighing respiration compensating for metabolic acidosis — a bedside sign of DKA. |
| Remission (type 2) | Normal blood glucose (HbA1c) maintained without glucose-lowering medication. A recognised, evidence-based outcome of intensive lifestyle/dietary change — best achieved early. |
| Sick-day rules | Self-management guidance during illness — e.g. steroid-dependent patients increasing their dose; diabetic patients monitoring ketones — that prevents many crises. |
| Thyroid storm | Decompensated, life-threatening hyperthyroidism with fever, tachyarrhythmia, and CNS dysfunction. Antithyroid drug before iodine; beta-blockade; steroids; treat the trigger. |
This module is part of a 12-title series. See also: Module 03 — Clinical Nutrition, Module 06 — Polypharmacy & Deprescribing, Module 02 — Cardiovascular Physiology, and Module 11 — Elder Care & Delirium.