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 diabetes supports the need for glucose rather than contraindicating it.

The patient's skin is pale and diaphoretic: Pale, diaphoretic skin is a sign consistent with hypoglycemia and supports giving glucose.

The patient's blood glucose is 40 mg/dL: A low blood glucose level indicates hypoglycemia, which is an indication for oral glucose, not a contraindication.

Withhold glucose and transport; signs are not classic for hypoglycemia: The observation behind this option is fair. This really is not the textbook picture, and it would be reasonable to notice that. The textbook picture describes the adrenergic response, not a diagnostic requirement, and elderly patients on medications that blunt that response routinely lack it. A measured glucose of 52 mg/dL is an objective finding, and objective findings outrank pattern recognition every time. Treating and reassessing costs almost nothing; withholding sugar from a starving brain costs neurons.

Administer high-flow oxygen and transport without glucose administration: Supplemental oxygen is rarely wrong as an adjunct, and every confused patient gets a saturation checked. This one reads 97% on room air, so there is no hypoxia to correct, and oxygen cannot substitute for a missing substrate. The brain needs oxygen and glucose together to function, and this patient has plenty of the first and not enough of the second, replacing the one that is not deficient changes nothing about the confusion or the slurred speech.

Treat the patient for stroke using aspirin and rapid transport: This is the strongest distractor, because acute slurred speech and confusion in an 81-year-old is a stroke presentation until proven otherwise, and hypoglycemia is the single most important stroke mimic to rule out. The glucometer already ruled it out: 52 mg/dL explains every finding in the question, and a confirmed metabolic cause gets treated first. Aspirin does nothing for hypoglycemia, would be given before any stroke was actually confirmed, and would be actively harmful if the cause turned out to be a bleed.

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: A candidate may connect diabetes 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, so a candidate who is fuzzy on which comes first could pick this.

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: Administering oral glucose gel risks aspiration in a patient who isn't managing pooling saliva: unswallowed secretions are direct evidence the airway can't be protected.

Administer oral glucose because the patient's eyes open to voice: Eyes opening to voice shows some responsiveness, but that alone doesn't establish the ability to swallow and protect the airway, which is the actual requirement for oral glucose.

Withhold oral glucose until the blood glucose level drops below 30 mg/dL: There is no lower glucose threshold that changes the decision: a blood glucose level of 34 mg/dL with altered mental status already indicates treating hypoglycemia. The route is the problem: oral glucose is withheld because the patient cannot swallow and protect the airway, not because the number hasn't fallen far enough.