22 Medical Emergencies & Pharmacology Practice Questions & Answers

1. 1. An 82-year-old woman is confused, pale and diaphoretic after two days of vomiting. Her skin is cool, radial pulses are weak, and her heart rate is 72. Her home medication list includes a beta blocker. How should the AEMT interpret that heart rate?

   • A.The rate shows adequate cardiac output, so her weak pulses come from arterial disease.
   • B.The normal rate rules out significant volume loss, so dehydration is unlikely here.
   • C.The rate reflects an intact vagal tone, so her confusion points to a primary stroke.
   • D.The beta blocker is blunting the compensatory tachycardia, so poor perfusion is still likely.✓ Answer

   Beta blockers antagonize beta-1 receptors, so the sympathetic rise in heart rate that normally accompanies volume loss is suppressed. A rate inside the usual range therefore cannot be used to exclude hypoperfusion, and the AEMT must weigh skin signs, pulse quality and mental status instead. This is why the home medication list is part of the history: it changes how the patient presents.

   Source: National EMS Education Standards (2021), Medicine — chronic/maintenance medications: class effects and polypharmacy, AEMT (S,S); AEMT Medical Overview competencyReport a problem with this question

2. 2. A 45-year-old man is found unresponsive to voice with snoring respirations and no available history. After the airway is opened and ventilation is supported, which assessment step most directly identifies a cause the AEMT can act on immediately?

   • A.Check pupil size and reactivity, because pupil findings identify the specific toxin involved.
   • B.Palpate the skull for deformity, because head trauma is the most common reversible cause.
   • C.Obtain a blood glucose reading, since hypoglycemia is a reversible cause of unresponsiveness.✓ Answer
   • D.Measure the body temperature, because an occult fever explains most unresponsive adult patients.

   Altered mental status is a presentation, not a diagnosis, and the AEMT works a differential that includes glucose, hypoxia, opioids, perfusion, postictal state and infection. Blood glucose measurement is within AEMT scope, takes seconds, and is the one item on that list the AEMT can both confirm and correct in the field. Pupils and temperature add information but neither confirms a treatable cause on their own.

   Source: National EMS Education Standards (2021), Medicine — Neurology: decreased level of responsiveness, AEMT (F,F); National EMS Scope of Practice Model 2019 — blood glucose monitoringReport a problem with this question

3. 3. One diabetic patient became confused over about twenty minutes with cool, sweaty skin. Another became progressively drowsy over two days with warm, dry skin and deep, rapid breathing. What best explains the difference between them?

   • A.Both develop within minutes, and the sweating simply reflects a warmer working environment.
   • B.Both develop across days, and the deep breathing simply reflects an underlying anxiety state.
   • C.Hypoglycemia falls fast and drives a sympathetic response; hyperglycemia builds slowly with acidosis.✓ Answer
   • D.Hypoglycemia builds slowly as ketone acids accumulate, while hyperglycemia strips perfusion within minutes.

   The brain has no glucose reserve, so a falling glucose level produces symptoms in minutes and triggers catecholamine release, which is what makes the patient pale, tachycardic and diaphoretic. Hyperglycemia instead develops over hours to days as osmotic diuresis dehydrates the patient and ketoacids accumulate, producing warm dry skin and the deep compensatory respirations that blow off carbon dioxide.

   Source: National EMS Education Standards (2021), Medicine — Endocrine Disorders: diabetic emergencies, AEMT (C,F)Report a problem with this question

4. 4. An unresponsive diabetic patient has a low blood glucose reading, no gag reflex, and two intravenous attempts have failed. Which route for glucose replacement is appropriate?

   • A.Intranasal dextrose, which crosses the nasal mucosa when access cannot be obtained.
   • B.Rectal dextrose, which bypasses both the failed attempts and the unprotected airway.
   • C.Intramuscular glucagon, which mobilizes stored hepatic glycogen and needs no vascular access.✓ Answer
   • D.Oral glucose gel between the cheek and gum, which absorbs through the buccal mucosa.

   Route selection is driven by the patient's condition: anything oral or buccal is unsafe when the airway is unprotected and the patient cannot swallow, and dextrose is not given nasally or rectally, both of which fall outside the AEMT's permitted routes. Glucagon given intramuscularly raises blood glucose by mobilizing hepatic glycogen, so it is the alternative when vascular access fails or is delayed, always within the state scope and medical direction under which the AEMT works.

   Source: National EMS Scope of Practice Model 2019 (Change Notices 1 & 2, 2021) — AEMT medications and permitted routes; Education Standards (2021), Pharmacology — Medication Administration, AEMT (C,C)Report a problem with this question

5. 5. After glucose is given the patient wakes and is fully oriented. Twenty minutes later, during transport, he becomes drowsy again. What is the appropriate action?

   • A.Recheck the blood glucose and reassess mental status, since the effect can wear off.✓ Answer
   • B.Withhold any further glucose, since a second dose after improvement causes rebound coma.
   • C.Assume a stroke has developed and reroute to a stroke center without rechecking glucose.
   • D.Attribute the drowsiness to postictal fatigue and let him sleep for the rest of transport.

   Reassessment is part of every medication given, and glucose is the clearest example: the patient's own insulin or oral hypoglycemic is often still active and glucagon depends on a hepatic glycogen store that may already be depleted, so the improvement can be temporary. A returning change in mental status is a cue to re-enter the assessment cycle by rechecking the glucose rather than assuming a new diagnosis.

   Source: National EMS Education Standards (2021), Medicine — Endocrine Disorders, AEMT (C,F); Pharmacology — Medication Administration and reassessment, AEMT (C,C)Report a problem with this question

6. 6. A patient has been seizing continuously for more than five minutes without regaining responsiveness between movements. Why is this time-critical, and what takes priority?

   • A.Continuous activity outstrips cerebral oxygen supply, so oxygenation and ventilation come first.✓ Answer
   • B.Continuous activity signals meningitis, so isolation precautions precede every other measure.
   • C.Continuous activity guarantees a head injury, so spinal motion restriction precedes oxygen.
   • D.Continuous activity dehydrates the muscles, so rapid fluid replacement precedes airway care.

   Status epilepticus is time-critical because sustained neuronal firing raises cerebral metabolic demand at the same time that disordered ventilation reduces oxygen delivery, so hypoxia and acidosis accumulate and neurons are injured. The AEMT's priority is therefore airway positioning, oxygenation and assisted ventilation while contacting medical direction and moving toward definitive care within the local protocol.

   Source: National EMS Education Standards (2021), Medicine — Neurology: seizure, AEMT (C,F)Report a problem with this question

7. 7. A woman with sudden right-sided weakness and slurred speech was last seen behaving normally at 6:15 a.m. Why does the AEMT record that time and report it early?

   • A.It determines whether the deficit is cortical and which stroke scale should be applied on the way.
   • B.It predicts whether bleeding will expand and whether transport should be delayed.
   • C.It establishes how long she has been hypoxic and sets the oxygen concentration to use.
   • D.It defines the treatment window the receiving hospital uses for reperfusion decisions.✓ Answer

   Reperfusion therapies are keyed to the interval since the patient was last known well, not to when the symptoms were discovered, so that single historical fact governs what the hospital can offer. Because the AEMT's competency includes destination and transport-mode decisions, establishing the time and passing it on during early notification is what allows the receiving stroke team to prepare before arrival.

   Source: National EMS Education Standards (2021), Medicine — Neurology: stroke, AEMT (F,F); AEMT Medical Overview competency: transport mode and destination decisionsReport a problem with this question

8. 8. Pathophysiologically, what distinguishes ischemic from hemorrhagic stroke, and what can a prehospital stroke scale tell the AEMT?

   • A.Vasospasm versus embolism; the scale confirms the type once the blood pressure is measured.
   • B.Bleeding versus occlusion; the scale separates the two types when severe headache is present.
   • C.Occlusion versus bleeding; the scale detects the deficit but cannot separate the two.✓ Answer
   • D.Edema versus infarction; the scale identifies the type from the pattern of the facial droop.

   An ischemic stroke is caused by a thrombus or embolus occluding a cerebral artery, while a hemorrhagic stroke is caused by a vessel rupturing and bleeding into or around brain tissue; both starve the same neurons of perfusion. A validated prehospital scale is a structured way to detect and describe the deficit reliably, but no field scale can tell the two mechanisms apart, which is why imaging at the receiving facility drives the treatment decision.

   Source: National EMS Education Standards (2021), Medicine — Neurology: stroke, AEMT (F,F): pathophysiology and assessmentReport a problem with this question

9. 9. One teenager stung by a bee has hives on the arm and itching, with normal breathing and a strong radial pulse. Another stung nearby has hives, stridor and a weak, rapid pulse. Which difference determines whether epinephrine is indicated?

   • A.A history of previous stings is what defines anaphylaxis, since sensitization occurred.
   • B.The number of hives present is what defines anaphylaxis once a whole limb is covered.
   • C.A multi-system reaction with airway compromise or hypoperfusion is what defines anaphylaxis.✓ Answer
   • D.The speed of onset after the sting is what defines anaphylaxis when symptoms start early.

   A localized allergic reaction is confined to skin findings and does not threaten ventilation or perfusion, so epinephrine is not indicated for it. Anaphylaxis is a systemic reaction in which mediator release causes bronchoconstriction, upper-airway swelling and vasodilation with capillary leak, and it is that airway or circulatory involvement, not the size of the rash or the timing, that makes epinephrine the first-line intervention.

   Source: National EMS Education Standards (2021), Medicine — Immunology: allergic and anaphylactic reactions, AEMT (C,C)Report a problem with this question

10. 10. In anaphylaxis with hypotension, why is epinephrine given intramuscularly into the lateral thigh rather than subcutaneously?

    • A.Muscle is far better perfused, so absorption stays reliable when the skin is shut down.✓ Answer
    • B.Subcutaneous injection produces an effect too rapid for a hypotensive patient to tolerate.
    • C.Muscle holds a larger volume, so the same effect needs a considerably less concentrated solution.
    • D.Subcutaneous tissue breaks the drug down enzymatically before it reaches the circulation.

    Absorption from any injection site depends on blood flow through that tissue, and in shock the body shunts blood away from skin and subcutaneous fat toward the core. Skeletal muscle in the lateral thigh retains far better perfusion, so an intramuscular injection there gives a more predictable rise in plasma concentration than a subcutaneous one in a patient who is already hypotensive.

    Source: National EMS Education Standards (2021), Pharmacology — Medication Administration and pharmacokinetics, AEMT (C,C); National EMS Scope of Practice Model 2019 — intramuscular route including auto-injectorReport a problem with this question

11. 11. Ten minutes after epinephrine, the patient's stridor has resolved and skin color has improved. What should the AEMT expect and do during transport?

    • A.Reduce monitoring, because resolved stridor shows the reaction has fully ended.
    • B.Discontinue oxygen, because improved color confirms tissue oxygenation is now adequate.
    • C.Continue full reassessment, because symptoms can return as the drug effect declines.✓ Answer
    • D.Withhold further treatment, because a repeat dose is prohibited after a good response.

    Epinephrine has a short duration of action while the mediators driving the reaction persist, and a biphasic reaction can return symptoms hours after apparent recovery. Improvement is therefore a reassessment finding, not an endpoint, so the AEMT keeps the patient monitored, maintains oxygen and vascular access, and consults medical direction about repeat dosing under the local protocol.

    Source: National EMS Education Standards (2021), Medicine — Immunology: anaphylactic reactions, AEMT (C,C); Pharmacology — duration of action and reassessmentReport a problem with this question

12. 12. A man has crushing chest pressure. Before assisting with sublingual nitroglycerin, which history question most directly affects whether the drug is safe to give?

    • A.Whether he has eaten in the last six hours, since food blocks sublingual absorption.
    • B.Whether he has taken aspirin today, since the two drugs cannot be given together.
    • C.Whether the tablets were prescribed to him rather than to a family member.
    • D.Whether he has recently taken a phosphodiesterase-5 inhibitor for erectile dysfunction.✓ Answer

    Nitroglycerin and phosphodiesterase-5 inhibitors both increase the vasodilating effect of cyclic GMP, and together they can produce profound, refractory hypotension; the interaction outlasts the erection-related effect, so the question covers the preceding day or more depending on the specific agent. Asking before administration is the AEMT's assessment obligation, and aspirin is routinely given with nitroglycerin rather than being a contraindication to it.

    Source: National EMS Education Standards (2021), Pharmacology — Acute Medications: interactions and contraindications, AEMT (C,C); National EMS Scope of Practice Model 2019 — sublingual nitroglycerin for suspected ischemic chest painReport a problem with this question

13. 13. Why is aspirin given for suspected ischemic chest pain, and what finding would make the AEMT withhold it?

    • A.It dilates the coronary arteries; withhold it if the patient reports frequent heartburn.
    • B.It dissolves the clot already formed; withhold it if there is a family bleeding history.
    • C.It blocks platelet aggregation; withhold it if the patient reports an aspirin allergy.✓ Answer
    • D.It relieves the chest pain itself; withhold it if nitroglycerin has already been taken.

    Aspirin irreversibly inhibits platelet cyclo-oxygenase, which prevents further platelet aggregation on the ruptured plaque and limits growth of the clot; it does not dissolve an existing clot and it is not being given as an analgesic here. A reported allergy to aspirin is the contraindication the AEMT must screen for, and thrombolysis, which does dissolve clot, remains outside the AEMT scope entirely.

    Source: National EMS Scope of Practice Model 2019 — oral aspirin for suspected ischemic chest pain; Education Standards (2021), Pharmacology — Acute Medications, AEMT (C,C)Report a problem with this question

14. 14. An unresponsive man has pinpoint pupils and a respiratory rate of four. Naloxone is carried on the unit. What does the AEMT do first, and why?

    • A.Ventilate and oxygenate first, because hypoxia, not the drug itself, kills the patient.✓ Answer
    • B.Apply a nasal cannula first, because spontaneous effort improves once oxygen is flowing.
    • C.Place him in the recovery position first, because the airway clears without ventilation.
    • D.Give naloxone first, because reversing the drug restores breathing faster than ventilation.

    In opioid toxicity, death comes from respiratory depression and the resulting hypoxia and hypercarbia, so restoring oxygenation and ventilation is what immediately prevents cardiac arrest. Naloxone is an antagonist given alongside that support, not instead of it, and a nasal cannula does nothing for a patient who is barely moving air at all.

    Source: National EMS Education Standards (2021), Medicine — Toxicology: opioid toxicity, AEMT (F,F); AHA guidance on opioid-associated emergenciesReport a problem with this question

15. 15. After naloxone the patient is breathing adequately, is alert, and refuses transport. What is the pharmacological reason the AEMT presses for transport?

    • A.Naloxone causes delayed liver injury that appears several hours after it is given.
    • B.Naloxone can wear off before the opioid does, so respiratory depression may return.✓ Answer
    • C.Naloxone leaves the patient permanently unable to respond to any opioid given in future.
    • D.Naloxone accumulates with repeated use and produces its own respiratory depression.

    Naloxone competitively displaces opioids from the receptor but its duration of action is shorter than that of many opioids, especially long-acting or extended-release preparations. When it clears, opioid still circulating can re-occupy the receptors and respiratory depression can recur, which is why the patient needs continued observation and why refusal is handled with capacity assessment and medical direction rather than a quick release.

    Source: National EMS Education Standards (2021), Pharmacology — Principles: pharmacokinetics and duration of action, AEMT (C,C); Medicine — Toxicology: opioid toxicity, AEMT (F,F)Report a problem with this question

16. 16. A family in a home with a faulty furnace has headache, nausea and confusion, and pulse oximetry reads 98 percent. Why is that reading misleading?

    • A.The oximeter measures dissolved plasma oxygen, which stays normal during this poisoning.
    • B.The oximeter counts carboxyhemoglobin as though it were oxygenated hemoglobin.✓ Answer
    • C.The oximeter fails whenever the patient's peripheral skin is cold and poorly perfused.
    • D.The oximeter over-reads because carbon monoxide raises the patient's heart rate sharply.

    Carbon monoxide binds hemoglobin with far greater affinity than oxygen does, and a standard two-wavelength pulse oximeter cannot distinguish carboxyhemoglobin from oxyhemoglobin, so it reports saturated hemoglobin that is carrying no usable oxygen. The AEMT therefore treats on the history and presentation of the whole group, removes patients from the source, and gives high-concentration oxygen despite the reassuring number.

    Source: National EMS Education Standards (2021), Medicine — Toxicology: carbon monoxide poisoning, AEMT (S,S)Report a problem with this question

17. 17. Crews are dispatched for a worker who collapsed inside a grain-storage building shortly after a chemical was applied there. A second worker standing in the doorway now says he is dizzy. What should govern the AEMT's first action?

    • A.Keep the crew out and request a hazardous-materials team, because the exposure is ongoing.✓ Answer
    • B.Call the poison center from the doorway first, because the agent's name dictates all further care.
    • C.Enter and flush the worker's skin on scene, because absorbed agents must be washed off first.
    • D.Enter with a surgical mask and pull the worker out, because removal outweighs the vapor risk.

    A second person becoming symptomatic at the threshold is the cue that the agent is still present and being inhaled or absorbed, which turns rescuers into the next patients. Scene safety precedes patient contact in a poisoning of any route, so the crew stays out of the hot zone until a properly protected team controls and ventilates the space; poison-center consultation and decontamination follow once the environment is safe.

    Source: National EMS Education Standards (2021), Medicine — Toxicology: poisons by inhalation and absorption, AEMT (F,F); scene safety and environment of careReport a problem with this question

18. 18. A patient reports two days of black, tarry stools and now feels lightheaded on standing; the skin is pale and cool. What does the stool finding indicate?

    • A.Fresh blood from a lower colonic source, meaning a slow bleed that rarely affects perfusion.
    • B.Bile pigment from an obstructed duct, meaning a liver problem rather than a bleeding source.
    • C.Digested blood from an upper gastrointestinal source, with loss enough to affect perfusion.✓ Answer
    • D.Iron residue from a supplement, meaning no bleeding and no need to assess perfusion.

    Blood that has been exposed to gastric acid and digestive enzymes is broken down to a black, tarry stool, which points to bleeding above the small intestine; bright red blood per rectum instead suggests a lower and more rapid source. Orthostatic lightheadedness with pale, cool skin tells the AEMT that the loss is already large enough to compromise perfusion, so this is managed as hypovolemia with positioning, oxygenation, vascular access and fluid support per protocol.

    Source: National EMS Education Standards (2021), Medicine — Abdominal and Gastrointestinal Disorders: acute gastrointestinal hemorrhage, AEMT (F,F)Report a problem with this question

19. 19. A dialysis patient missed his last two sessions and now has swollen ankles, crackles in both lungs, and difficulty breathing when lying flat. What best explains this presentation?

    • A.Protein lost through the filter has pulled fluid out of the lungs into the tissues.
    • B.Blood removed at his previous session has left him profoundly depleted of volume.
    • C.The access site has clotted and released emboli that flooded both lung fields at once.
    • D.Fluid that dialysis would have removed has accumulated and overloaded the circulation.✓ Answer

    Dialysis removes both waste products and excess water, so a missed session leaves the patient with fluid that failing kidneys cannot excrete. The retained volume raises hydrostatic pressure and produces dependent edema, pulmonary crackles and orthopnea, which is why the AEMT positions the patient upright, supports oxygenation and ventilation, and is deliberate about any fluid given.

    Source: National EMS Education Standards (2021), Medicine — Genitourinary/Renal: complications related to renal dialysis, AEMT (F,S)Report a problem with this question

20. 20. An elderly nursing-home resident is confused, warm and tachycardic, with mottled skin and delayed capillary refill, after several days of cough. Which framework should guide the AEMT?

    • A.Treat this as a lung problem only, with oxygen therapy and no circulatory intervention.
    • B.Treat this as fever alone, with passive cooling and reassessment before deciding transport.
    • C.Treat this as dementia progressing, with supportive care and a routine transport decision.
    • D.Treat this as perfusion failure caused by infection, with fluid support and early notification.✓ Answer

    Sepsis is recognized as a perfusion problem rather than by any single vital sign: infection triggers a systemic inflammatory response that causes vasodilation and capillary leak, so the patient shows mottled skin, delayed capillary refill and altered mental status. That combination places the patient in distributive shock, which is why the AEMT supports perfusion with vascular access and fluid within protocol and notifies the receiving facility early.

    Source: National EMS Education Standards (2021), Medicine — Infectious Disease: sepsis and septic shock, AEMT (F,F); Shock and Resuscitation: treatment of shock and hypoperfusion, AEMT (C,C)Report a problem with this question

21. 21. A laborer collapses on a hot day: his skin is hot and dry, and he is confused and answers inappropriately. A coworker is sweating heavily, alert, with painful leg cramps. What separates the emergency from the lesser illness?

    • A.The amount of sweat produced marks the true emergency, since sweating means greater loss.
    • B.Muscle cramping marks the true emergency, since cramps signal the highest core temperature.
    • C.The duration of the exposure marks the true emergency, whatever the patient's behavior.
    • D.Failed thermoregulation with altered mental status marks the true emergency.✓ Answer

    Heat cramps and heat exhaustion occur while thermoregulation still works: the patient sweats, stays alert, and improves with rest, cooling and fluids. When the compensatory mechanisms fail, sweating stops, core temperature climbs and the central nervous system is affected, so hot dry skin with altered mental status marks the life threat and drives aggressive cooling with rapid transport.

    Source: National EMS Education Standards (2021), Medicine — Environmental Emergencies: heat-related illness and thermoregulationReport a problem with this question

22. 22. A 30-year-old is agitated and combative in a parking lot. Family says he has diabetes and 'was completely fine an hour ago.' What reasoning should guide the AEMT?

    • A.Withhold assessment until police arrive, since a combative patient has refused care by law.
    • B.Restrain him at once and transport, since the agitation itself is the treatable problem.
    • C.Wait for him to settle on his own, since a psychiatric episode resolves without assessment.
    • D.Secure the scene first, then look for medical causes such as low glucose before labeling this.✓ Answer

    Behavior is a presentation with medical, toxic and psychiatric causes, and an abrupt change in a diabetic patient makes hypoglycemia a leading and reversible explanation, alongside hypoxia and intoxication. The sequence is scene safety and de-escalation first, then assessment including a glucose measurement; restraint is a last resort used only when the patient endangers himself or others, applied within state scope and medical direction and followed by continuous monitoring.

    Source: National EMS Education Standards (2021), Medicine — Psychiatric: acute psychosis and excited delirium, AEMT (F,F); Medicine — Neurology: decreased level of responsiveness, AEMT (F,F)Report a problem with this question

Practice questions based on the National Registry Advanced EMT Examination Specifications and the National EMS Education Standards. This site is not affiliated with or endorsed by the National Registry of Emergency Medical Technicians, and nothing here is medical advice. AEMT scope of practice is set by your state and by your medical director, and drug doses, concentrations, infusion rates and clinical thresholds come from your protocols — never from a practice test. Resuscitation guidance is revised on a cycle; always follow the guidelines and protocols currently in effect where you practice. Confirm eligibility and current exam requirements with the National Registry before you test. About AEMT certification →