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10 free EMT practice questions: Baseline Vital Signs & Diagnostics

These are real questions from the same bank the app draws from. Each one is written to the NREMT EMT content specifications and kept inside the EMT scope of practice. Pick an answer and you get the full rationale, including why the other three options are wrong.

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Question 1 of 10

The EMT is obtaining baseline vital signs on an alert adult patient before a scheduled transfer between facilities. After counting the radial pulse, the EMT keeps the fingers resting on the patient's wrist and, without announcing it, counts the respiratory rate. Why is the respiratory rate counted this way?

Show the answer and rationale

Correct answer · Awareness of being observed can change the patient's breathing rate

Breathing is the one vital sign a patient can consciously control. A patient who knows the breaths are being counted often slows, speeds, or deepens the breathing without meaning to, which corrupts the reading. Keeping the hand on the wrist after the pulse count makes the respiratory count invisible to the patient, so the rate recorded is the true resting rate.

Why the others are wrong

The radial pulse should be counted a second time for accuracy: Counting the radial pulse a second time for accuracy doesn't explain why the fingers stay on the wrist afterward: the point of staying there is to hide the respiratory count, not to recheck the pulse.

Respiratory movement is easier to feel at the wrist than to see: Saying respiratory movement is easier to feel at the wrist than to see misstates the actual reason: the technique isn't about ease of feeling, it's about keeping the patient unaware their breathing is being counted.

Counting both vital signs together shortens time on scene: Saying it shortens time on scene isn't the reason either: the technique exists specifically to get an accurate, unaltered respiratory rate, not to save time.

Question 2 of 10

When an EMT shines a penlight into a patient's right eye, both the right and left pupils constrict briskly and equally. What does this finding indicate?

Show the answer and rationale

Correct answer · A normal pupillary response

When a light is shined into one eye, both pupils should constrict equally to the appropriate size, which is a normal pupillary response reflecting adequate brain perfusion and oxygenation.

Why the others are wrong

A basilar skull fracture: suggested by findings such as fluid from the ears or bruising behind the ears, not by pupillary constriction.

Increased intracranial pressure: suggested by pupils that are sluggish to react, not by a normal brisk equal constriction.

Unilateral oculomotor nerve damage: would present with unequal or fixed and dilated pupils, not equal brisk constriction.

Question 3 of 10

An EMT is assessing a 54-year-old patient with a history of severe anemia who reports two days of worsening weakness and difficulty breathing on exertion. The patient is alert, and the skin and the inner eyelids appear pale. Breath sounds are clear and equal, and the chest rises well with each breath. The pulse oximeter reading correlates with the palpated radial pulse. The vital signs are BP 118/72 mmHg, P 104/min, R 22/min, and SpO₂ 98% on room air. What does this oxygen saturation reading tell the EMT about this patient?

Show the answer and rationale

Correct answer · Most of the hemoglobin that is present is carrying oxygen

A pulse oximeter reports the percentage of the hemoglobin that is present which is bound to a gas; it does not measure how much hemoglobin the patient has. The device functions properly only with adequate perfusion and adequate numbers of red blood cells, so a reduction in red blood cells such as anemia makes the value misleading rather than reassuring. A high reading in this patient means most of the available hemoglobin is loaded, not that oxygen delivery is sufficient, which is why the device functions poorly as a stand-alone measure when red blood cells are lost or reduced.

Why the others are wrong

Enough oxygen is reaching the tissues to meet demand: This is the common misreading that saturation equals oxygen delivery. Saturation is a percentage of whatever hemoglobin is present, and the stated history of severe anemia means that quantity is reduced.

The number of red blood cells is within normal limits: Students who think the device measures the blood itself pick this. Pulse oximetry does not count red blood cells, and the stated history of severe anemia with pale skin and pale inner eyelids points the other way.

The saturation is falsely raised by the pale skin: Conditions at the sensor site can skew a reading, so students blame the pallor. The question states the reading correlates with the palpated radial pulse, which is the check that confirms the device is tracking real pulsatile flow.

Question 4 of 10

An EMT assesses a 44-year-old patient who slipped on ice and has an isolated, closed ankle injury. The patient waited outside in the cold for about 20 minutes before EMS arrived. The patient is alert and calm, and the skin of the face and trunk is warm, pink, and dry. The radial pulse is strong and regular. The vital signs are BP 126/78 mmHg, P 76/min, R 14/min, and SpO₂ 98% on room air. Capillary refill at the fingertips takes 4 seconds. How should the EMT interpret the capillary refill finding?

Show the answer and rationale

Correct answer · It is an unreliable perfusion sign in this situation

Capillary refill time is most useful in pediatric patients. In an adult it is affected by position, age, smoking history, chronic medical problems such as diabetes, current medications, and exposure to a cold environment, so a delayed refill on its own is not an accurate indication of poor perfusion. This patient has warm, pink, dry skin over the face and trunk, a strong regular radial pulse, and vital signs inside adult normal ranges after about 20 minutes in the cold, so the delayed fingertip refill reflects the cold exposure rather than systemic hypoperfusion, and the central findings carry the interpretation.

Why the others are wrong

It confirms that early shock is developing: Students who treat a refill longer than 2 seconds as a fixed shock criterion pick this. Every other perfusion finding in the question argues against shock: warm, pink, dry central skin, a strong regular radial pulse, and vital signs within adult normal ranges.

It indicates the patient is becoming hypothermic: Cold exposure is correctly noticed and then over-called. The question describes warm central skin, a calm and alert patient, and only about 20 minutes of exposure, none of which fits a falling core temperature.

It shows the ankle injury has compromised circulation: This confuses a central perfusion sign with a limb-specific one. The refill was measured at the fingertips, and the question describes an isolated, closed ankle injury, so the ankle cannot account for a finding in the hand.

Question 5 of 10

An EMT is assessing a 2-year-old patient who has had vomiting and diarrhea for two days. The patient is drowsy but rouses to voice, the hands and feet are mottled and cool, and capillary refill at the sternum takes 4 seconds. The vital signs are P 168/min, R 36/min, and SpO₂ 97% on room air. The EMT has twice tried to obtain a blood pressure with a pediatric cuff, and the child pulls the arm away each time. What is the most appropriate action for the EMT to take?

Show the answer and rationale

Correct answer · Act on the skin and pulse findings and begin transport

In a child younger than 3 years the blood pressure is usually not assessed. It is often difficult to obtain and it offers little information about the child's circulatory status, so assessment of the skin is the better indicator at that age. This child already shows the findings that matter: a decreased level of consciousness, mottled and cool extremities, capillary refill of 4 seconds, and a pulse of 168/min, which together indicate poor perfusion. Further attempts at a cuff pressure delay transport without changing either the assessment or the treatment.

Why the others are wrong

Attempt the blood pressure again with the child held still: Persistence looks conscientious, and students are taught that a vital sign set is incomplete without a blood pressure. Holding a poorly perfused 2-year-old still for a third attempt costs time and still produces a number of little value at this age.

Apply an adult cuff to the thigh to obtain a reading: An adult cuff is far too large for a 2-year-old's thigh, and an oversized cuff yields a falsely low reading, which would misrepresent the child as worse than the other findings show.

Record the blood pressure as unobtainable and recheck in 15 minutes: Documenting the attempt is correct, but the reassessment interval is not. A child with a decreased level of consciousness, mottled skin, and delayed capillary refill is unstable and is reassessed about every 5 minutes rather than every 15.

Question 6 of 10

An EMT is transporting a 47-year-old patient whose abdomen was struck by a falling load at a warehouse. The patient is alert and reports only mild soreness. The first set of vital signs is BP 118/76 mmHg, P 74/min, R 14/min, and SpO₂ 99% on room air. Ten minutes later the vital signs are BP 110/70 mmHg, P 88/min, R 16/min, and SpO₂ 97% on room air. Ten minutes after that the vital signs are BP 102/66 mmHg, P 98/min, R 20/min, and SpO₂ 95% on room air. Which of these should most influence the EMT's decision about this patient?

Show the answer and rationale

Correct answer · The direction each value has moved across the three sets

Often the most important information associated with the blood pressure is not the absolute value at any one point but the trend over time while the patient is in the EMT's care, and trending the remaining vital signs serves the same purpose. Every individual number in all three sets falls inside adult reference ranges, yet across 20 minutes the systolic pressure fell from 118 to 102 mmHg, the pulse rose from 74 to 98/min, the respiratory rate rose from 14 to 20/min, and the oxygen saturation drifted from 99% to 95%. Read together with a blunt abdominal mechanism, that consistent direction of change is the finding that should drive the transport and notification decision.

Why the others are wrong

The most recent set, which is still within adult ranges: Checking each value against a reference range is exactly how students are taught to read a single set, and every value here passes. Judging only the latest set discards the change over time, which is where the information in serial vital signs lives.

The first set, which is the recorded baseline: The baseline set is essential, but on its own it describes only the starting point. It becomes useful when it is compared with the later sets, which is the comparison this option leaves out.

The report of only mild abdominal soreness: A patient who reports feeling only mildly sore is reassuring, and students weight the subjective report heavily. Reported severity is a symptom, while the measured values are objective signs, and here the signs are moving steadily in one direction after a blunt abdominal mechanism.

Question 7 of 10

What is the normal heart rate range for an infant?

Show the answer and rationale

Correct answer · 120 to 150 beats per minute

An infant's heart has to beat a lot faster than yours to move enough blood, because the heart itself is small and moves only a little blood with each squeeze. That puts a normal infant's resting rate at 120 to 150 beats per minute. That's also why the APGAR score gives a newborn 2 points for a pulse over 100: anything lower than that is already too slow.

Why the others are wrong

60 to 100 beats per minute: You'd pick this if you were thinking of an adult or an older child. 60 to 100 is the adult range, and it's far too slow to be normal for an infant.

80 to 110 beats per minute: This is the closest call, because 80 to 110 looks like a reasonable pediatric number and it is faster than an adult's. It still sits below where a healthy infant's heart runs, so a perfectly normal infant would read as too fast against it.

40 to 60 beats per minute: This range is slower still. An infant running 40 to 60 would be seriously bradycardic and in trouble, not a normal baseline finding.

Question 8 of 10

An EMT is assessing an adult patient with a sudden altered mental status of unknown cause. Which of the following is an appropriate diagnostic test within EMT scope to help identify the cause?

Show the answer and rationale

Correct answer · A blood glucose level

Blood glucose monitoring is a diagnostic test within EMT scope, and it is specifically indicated for altered mental status of unknown cause because hypoglycemia is a common, readily identifiable, and reversible cause of sudden AMS.

Why the others are wrong

A 12-lead ECG interpretation: Acquiring and transmitting a 12-lead ECG is within EMT scope, but interpreting it is not; a 12-lead ECG interpretation exceeds EMT scope of practice and is not an appropriate EMT action for working up AMS.

A blood culture: Obtaining a blood culture requires sterile venous blood draw, laboratory processing, and incubation over time, none of which are within EMT scope or feasible as a field diagnostic test.

A chest X-ray: Obtaining and interpreting a chest X-ray requires radiographic imaging equipment and radiology training that are entirely outside EMT scope and are not available in the prehospital setting.

Question 9 of 10

An EMT obtains a pulse oximetry reading of 91% on an adult patient breathing room air, with no other findings yet assessed. How should the EMT interpret this reading?

Show the answer and rationale

Correct answer · Below the normal range and clinically significant

Normal adult SpO₂ is 94-99%; a reading of 91% is below that range and is treated as a real, clinically significant finding of hypoxia, whether or not the patient reports difficulty breathing.

Why the others are wrong

Normal; no further action needed: A reading of 91% is below the normal adult range of 94-99%, so it is not a normal finding and does not warrant no further action.

Only meaningful if the patient also reports difficulty breathing: A low SpO₂ reading is clinically significant on its own as an objective measurement; the EMT does not need to wait for the patient to subjectively report difficulty breathing before treating it as significant.

Falsely low and should be disregarded: Nothing in the scenario (poor waveform, cold extremity, nail polish, motion artifact) suggests the reading is inaccurate; absent such an indication, a pulse oximetry reading is treated as accurate and acted upon.

Question 10 of 10

A 4-month-old infant has a heart rate of 165/min. The infant is alert, feeding normally, and has no fever. How should the EMT interpret this heart rate on its own?

Show the answer and rationale

Correct answer · Within the higher end of the normal range for this age

Normal infant heart rate ranges run considerably faster than adult rates: roughly 100-150/min for a young infant (0-3 months) and roughly 80-120/min for an older infant (6-12 months); a 4-month-old falls between these bands, and 165/min, while at the higher end, combined with a reassuring exam (alert, feeding normally, afebrile) places this within the higher end of the expected normal range rather than clearly outside it.

Why the others are wrong

Clearly abnormal and requires immediate intervention: Combined with a reassuring exam, a rate of 165/min in a 4-month-old does not meet the threshold for an automatic emergent intervention; it sits near the upper end of the expected infant range rather than being clearly abnormal on its own.

Impossible to interpret without an ECG: Heart rate can be assessed by pulse palpation or auscultation and compared against established age-based normal ranges; an ECG tracing is not required to interpret this finding.

Bradycardic for an infant this age: A rate of 165/min is well above, not below, normal infant heart rate ranges, so this is not bradycardia.

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