10 free EMT practice questions: Endocrine Disorders

Panic attack: A panic attack genuinely produces rapid breathing, and hyperventilating patients feel terrible, often with tingling around the mouth and in the fingers, so the respiratory rate alone does not separate it out. Time and smell do: panic builds over minutes and has nothing to do with three days of thirst and frequent urination, and it produces no ketones, so there is no fruity odor to explain. Choosing it also means leaving an acidotic, dehydrated diabetic sitting at a construction site, which is the real cost of missing this one.

Heat exhaustion: the trap the construction site is there to set, and it is the right answer for a worker in the heat who becomes weak and lightheaded with cool, pale, moist skin and cramping. This patient's skin is warm and dry, which points the opposite direction, and the thirst and bathroom trips started three days ago rather than during today's shift. Heat exposure also does nothing to explain the fruity odor, which only ketones produce.

Hypoglycemia: the most important condition to consider in any diabetic with a changed mental status, because it is the one correctable in minutes, and it fits a patient who deteriorates over minutes with confusion, tremor, and cool, clammy skin. The skin is the clean discriminator here: a falling sugar triggers an adrenaline response that leaves patients pale, cool, and sweaty, while this patient is warm and dry. Add the deep rapid breathing and the fruity odor, neither of which low sugar causes, and the days-long onset this question specifically describes, and it resolves to ketoacidosis.

Viral gastroenteritis with dehydration: a strong fit for part of this picture. It is the most common cause of dehydration in a school-age child and produces tachycardia, fatigue, and dry skin. It cannot explain a week of increased thirst with increased urination, because a child dehydrated from vomiting and diarrhea makes less urine, not more, and no vomiting or diarrhea is reported at all. The fruity breath odor has no explanation under this diagnosis, while the key accounts for every finding in the question.

Asthma exacerbation: An asthma exacerbation is the right answer when the rapid breathing is obstructive: wheezing, prolonged expiration, accessory muscle use, usually with a known history and a trigger. Kussmaul respirations are deep and fast but unobstructed: this child is moving air freely and doing it on purpose to correct an acid problem, not fighting to get air back out. Both produce a rate of 32; only one comes packaged with a week of polyuria, weight loss, and acetone on the breath.

Anxiety related to a change in routine: Anxiety about a change in routine does cause hyperventilation, so the respiratory rate alone would not rule it out. Anxious hyperventilation is rapid and shallow rather than deep, and it does not produce a week of weight loss, constant thirst, and frequent urination. Calling this anxiety leaves an illness that progresses to coma untreated, while the key explains the respiratory rate and everything around it.

The patient has a history of type 1 diabetes: A history of type 1 diabetes explains why this patient can develop insulin-driven hypoglycemia, but it says nothing about airway protection right now. Diabetes type never decides oral glucose safety, only the ability to swallow and stay conscious does.

The patient's skin is pale and diaphoretic: Pale, diaphoretic skin is the sympathetic response to hypoglycemia, sweating and vasoconstriction as glucose runs low, and it can look alarming enough to seem like a reason to hold back treatment. That finding only confirms the diagnosis, it says nothing about the patient's ability to swallow or protect an airway, so it doesn't block oral glucose.

The patient's blood glucose is 40 mg/dL: A blood glucose of 40 mg/dL confirms the hypoglycemia you're treating, it's the reason to give glucose, not a reason to withhold it. Low glucose and oral glucose are a cause and effect pair, one can't serve as the contraindication to the other.

Withhold glucose and transport; signs are not classic for hypoglycemia: This choice leans on the missing sweating and tremor, the adrenergic signs many expect with low sugar, but the measured glucose of 52 mg/dL is an objective finding that overrides pattern recognition, and withholding treatment starves an already fuel-short brain.

Administer high-flow oxygen and transport without glucose administration: High-flow oxygen is a reasonable reflex for confusion, but the SpO2 here is 97% on room air, so hypoxia isn't the problem, and oxygen does nothing to correct the neuroglycopenia causing the weakness and slurred speech.

Treat the patient for stroke using aspirin and rapid transport: Acute confusion and slurred speech in an 81-year-old fit a stroke picture, where sudden focal deficits like facial droop or arm drift come from a vascular event, and aspirin plus rapid transport is correct once stroke is confirmed. The glucose of 52 mg/dL explains every finding, and giving aspirin before ruling out a bleed answers an unconfirmed diagnosis first.

The glucometer reads below 70 mg/dL: A reading below 70 with symptoms is what makes hypoglycemia the working diagnosis, and where a reading is available it is what tells you glucose is the right treatment. What it cannot tell you is whether the patient can safely take it: a patient at 38 who is unresponsive has an even stronger indication and an absolute contraindication at the same moment. The number picks the treatment; mental status picks whether it can go in the mouth.

The patient has a documented history of type 1 diabetes mellitus: History legitimately raises suspicion, and a known insulin-dependent diabetic with altered mental status should have you thinking hypoglycemia within seconds. It does not gate the treatment, though, because type 2 diabetics on sulfonylureas go low, and so do people with no diabetes at all through alcohol, sepsis, or prolonged fasting. History changes how likely you think it is, never whether it is safe to put something in the patient's mouth.

The skin is warm and dry rather than cool and diaphoretic: Warm, dry skin actually points the other direction, toward hyperglycemia, where the patient is dehydrated and the diaphoresis of a hypoglycemic episode is absent. The classic hypoglycemic skin is cool and diaphoretic. A finding that argues against the diagnosis you are treating cannot be a prerequisite for treating it, and the swallow-and-protect requirement applies no matter what the skin shows.

Use a tongue depressor to open the patient's mouth and administer the oral glucose gel: Using a tool to pry the mouth open belongs to airway emergencies where access itself is life-saving, and even then it is not how oral glucose is administered. Here the clenched jaw is not an obstacle to work around, it is the contraindication itself: it tells you the patient cannot safely take anything by mouth. Forcing a depressor past clenched teeth risks dental and soft-tissue injury, and any gel that follows it carries the same aspiration risk. The key delivers the same treatment by a different route while avoiding all of it.

Apply the oral glucose gel under the tongue, where it can be absorbed without the patient swallowing: Placing glucose under the tongue sounds clever because sublingual absorption is a real route. It is how nitroglycerin works, and that is the association being tested. Oral glucose gel is a swallowed carbohydrate, not a sublingually absorbed drug, so it still has to be swallowed and it still goes into a mouth the patient cannot control. It carries the same aspiration risk with none of the benefit, and it burns time before the ALS request that actually solves the problem.

Delay transport and periodically retry oral glucose until the patient cooperates: Waiting for cooperation misreads the direction this call is moving: the confusion is caused by the falling glucose, so time makes the patient less able to cooperate, not more. Each retry burns minutes the brain is spending without fuel, and nothing about hypoglycemia self-corrects while you wait. The key accepts that the oral route is closed and moves the patient toward providers who can give glucose by a route that does not require cooperation.

The liver producing glucagon: You'd land here if you were thinking of the organ that stores and releases sugar into the blood. The liver does that with glycogen, but glucagon is made by the pancreas, not the liver, and diabetes is a problem with the pancreas failing to make insulin or the body failing to respond to it.

The adrenal glands producing epinephrine: This fits if you were thinking about the stress response and adrenaline, but the adrenal glands and epinephrine have nothing to do with regulating blood glucose level the way diabetes does.

The thyroid producing thyroxine: This fits if you were thinking about metabolism in general, since the thyroid does set the body's metabolic rate. Thyroxine doesn't control blood glucose level, and the thyroid isn't the gland that malfunctions in diabetes.

Low blood glucose directly damages the myelin sheath surrounding peripheral nerves: Diabetes connects easily with nerve damage from chronic peripheral neuropathy, but that is a slow, long-term complication of chronically elevated glucose, not the mechanism behind acute confusion from a single low reading.

Low blood glucose causes the brain's blood vessels to constrict, reducing perfusion: This borrows a vascular mechanism more associated with stroke; low blood glucose is a fuel-supply problem for brain cells, not a blood-vessel problem, and no vessel constriction is involved.

Low blood glucose triggers a release of excess insulin, worsening the glucose deficit: This reverses cause and effect; excess insulin causes low blood glucose, not the other way around, and it only holds up if the order is fuzzy.

Place oral glucose gel between the cheek and gum: Placing oral glucose gel between the cheek and gum is contraindicated in this patient, who does not open the eyes, speak, or move to painful stimuli. That level of unresponsiveness means the airway cannot be protected from aspiration.

Administer oral glucose and then reassess in 5 minutes: Administering oral glucose and reassessing in 5 minutes still administers a contraindicated treatment first and only reassesses afterward, when the danger of aspiration is immediate, not something to catch on a later recheck.

Dissolve an oral glucose tablet in water and pour it into the mouth: Dissolving an oral glucose tablet in water and pouring it into the mouth is even more dangerous: a liquid poured into the mouth of an unresponsive patient is highly likely to be aspirated.

Administer oral glucose gel between the cheek and gum: A blood glucose level of 34 mg/dL with altered mental status is the classic trigger for oral glucose, but the pooled, unswallowed saliva shows this patient can't manage secretions, so oral glucose risks aspiration instead of correction.

Administer oral glucose because the patient's eyes open to voice: Eyes opening to loud voice shows arousal, which can look like enough responsiveness for oral glucose, but arousal isn't airway protection: incomprehensible speech, no command following, and unswallowed pooling saliva show swallow and gag reflexes are absent. Eye opening tests responsiveness, not the ability to protect the airway.

Withhold oral glucose until the blood glucose level drops below 30 mg/dL: There's no blood glucose threshold, like 30 mg/dL, that changes when oral glucose becomes appropriate: the decision turns on airway protection, and at 34 mg/dL with unswallowed saliva pooling, the airway problem already rules out the oral route.