Free HESI A2 Vocabulary practice test
25 original Vocabulary questions on general vocabulary, health-care vocabulary, word parts.
- Programs usually give 55 questions in about 50 minutes for this section.
- Practice mode is free; timed exam mode at the same pace comes with full access.
- Every answer is explained.
HESI A2 Vocabulary practice test
- 25 questions
- Vocabulary
- 23 min in exam mode
- Practice mode, no timer
A short set from this test. We don't have free questions on that topic here yet, so this set mixes topics. Sets on a single topic are included with full access, so this set mixes topics. Take the full test instead
Or take all 25 questions:
Exam mode, with a timer like test day, is included with full access. See plans. Practice mode is free.
·
Questions are original practice items written to the published exam content, not real exam questions.
Before the ultrasound, the technician asked Mr. Okafor to lie supine on the table. Which word or phrase is closest in meaning to supine?
Correct answer: D
Supine means lying on the back with the face upward. Its opposite partner is prone, which means lying face down with the chest and stomach downward. A quick memory hook: supine has "up" in it, so the face points up.
- A Face down on the stomach is the meaning of prone, the opposite of supine.
- B Lying on one side is a side-lying position; supine means flat on the back.
- C Sitting upright is not lying flat at all; supine describes lying on the back.
- D Correct: supine means lying on the back with the face upward.
Learn this topic: Health-care words for body position, location and direction 5-minute lesson
Source: Merriam-Webster, supine · Merriam-Webster, prone ·
The X-ray showed a small crack at the distal end of Priya's forearm bone. Which word or phrase is closest in meaning to distal?
Correct answer: A
Distal means situated away from the point of attachment or from the center of the body, so the distal end of a forearm bone is the end toward the wrist. Its opposite is proximal, meaning nearer the trunk or attachment point. Linking distal to "distance" helps you keep the pair straight.
- A Correct: distal means farther from the point of attachment or the center of the body.
- B Nearer to the surface is the meaning of superficial, which describes depth, not distance from the trunk.
- C Closer to the midline is the meaning of medial, which describes side-to-side position, not distance along a limb.
- D Closer to the trunk is the meaning of proximal, the opposite of distal.
Learn this topic: Health-care words for body position, location and direction 5-minute lesson
Source: Merriam-Webster, distal · Merriam-Webster, proximal ·
During the checkup, the nurse practitioner noted a palpable but painless lump under the skin of the arm. Which word or phrase is closest in meaning to palpable?
Correct answer: A
Palpable means capable of being touched or felt, so a palpable lump is one that can be felt with the fingers. The word says nothing about pain, size or depth. Words that sit near it in a sentence, such as "under the skin" or "painless", can tempt you toward superficial or tender, so match the word itself, not the details around it.
- A Correct: palpable means capable of being touched or felt.
- B Located near the surface is the meaning of superficial; the sentence says the lump is under the skin, but palpable itself means able to be felt.
- C Swollen and stretched out is the meaning of distended, not palpable.
- D Tender when pressed describes pain, and the sentence says the lump is painless; palpable only means it can be felt.
Learn this topic: Health-care words for body position, location and direction 5-minute lesson
Source: Merriam-Webster, palpable · Merriam-Webster, distend · Merriam-Webster, superficial ·
Resting in a quiet, dark room helped alleviate Dana's headache. Which word or phrase is closest in meaning to alleviate?
Correct answer: C
Alleviate means to relieve or lessen something such as pain or suffering, making it easier to bear. Its opposite is exacerbate, which means to make more severe. Alleviating a headache does not mean it never started or vanished completely; it means it became less bad.
- A Make more severe is the meaning of exacerbate, the opposite of alleviate.
- B Keep from starting is the meaning of prevent; the headache had already started.
- C Correct: alleviate means to relieve or lessen.
- D Cause to return describes a recurrence, not relief.
Learn this topic: Health-care words for symptoms, condition and care 5-minute lesson
Source: Merriam-Webster, alleviate · Merriam-Webster, exacerbate ·
Before the ultrasound, the nurse asked Mr. Reyes whether he had been able to void since breakfast. Which word or phrase is closest in meaning to void?
Correct answer: D
In a health-care sentence, void is a verb meaning to eliminate waste from the body; to void urine is to empty the bladder. In everyday English, void can also mean to cancel or make invalid, so let the setting decide which meaning fits. Walking is ambulate, a different care word.
- A Walking is the meaning of ambulate, another care word, not void.
- B Drinking water is taking fluid in; void means passing waste out.
- C Cancel or make invalid is an everyday meaning of void, but it makes no sense for a patient before an ultrasound.
- D Correct: in a care setting, void means to eliminate waste from the body, such as urine.
Learn this topic: Health-care words for symptoms, condition and care 5-minute lesson
Source: Merriam-Webster, void · Merriam-Webster, ambulate ·
The skin report described three discrete red patches on the patient's back. Which word or phrase is closest in meaning to discrete?
Correct answer: B
Discrete means separate and individually distinct, so three discrete patches are three patches that do not run together. It sounds exactly like discreet, which means careful about what one says or able to keep things private. Remember: in discrete, the t separates the two e's.
- A Kept quiet and private is the meaning of discreet, the sound-alike word spelled with ee.
- B Correct: discrete means separate and individually distinct.
- C Spread over a wide area is close to the opposite of discrete, which describes separate, distinct spots.
- D Painful when touched describes tenderness; discrete says nothing about pain.
Learn this topic: Health-care words for symptoms, condition and care 5-minute lesson
Source: Merriam-Webster, discrete · Merriam-Webster, discreet ·
Unlike his verbose first draft, Malik's final report was short and to the point. Which word or phrase is closest in meaning to verbose?
Correct answer: B
Verbose means containing more words than necessary, or wordy. The signal word unlike sets up a contrast clue: the final report was short, so the first draft must have been the opposite, too long and wordy. Its opposite is concise.
- A Clearly organized is close to coherent; the contrast with short points to length, not organization.
- B Correct: verbose means using more words than necessary.
- C Spelling errors have nothing to do with the contrast to short and to the point.
- D Speed of writing is not the opposite of short; the contrast clue points to length.
Learn this topic: How to work out an unfamiliar word from context clues 5-minute lesson
Source: Merriam-Webster, verbose · Lumen Learning, Writing Skills Lab: Context Clues ·
Without regular cleaning, the clinic's old wheelchairs began to deteriorate, and two of them soon had to be thrown away. Which word or phrase is closest in meaning to deteriorate?
Correct answer: D
Deteriorate means to become worse in quality, functioning or condition. The sentence gives a cause-and-effect clue: no cleaning caused the change, and the result was that some wheelchairs had to be thrown away, so the change must have been for the worse. Do not confuse it with deter, which means to discourage.
- A Get better is the opposite of deteriorate and does not fit the result that wheelchairs were thrown away.
- B Being put away is not a change in condition, and it does not explain why the wheelchairs had to be thrown away.
- C Discourage is the meaning of deter, a look-alike word, not deteriorate.
- D Correct: deteriorate means to become worse in quality or condition.
Learn this topic: How to work out an unfamiliar word from context clues 5-minute lesson
Source: Merriam-Webster, deteriorate · Merriam-Webster, deter ·
The schedule was so ambiguous that some students came on Monday and others on Tuesday. Which word or phrase is closest in meaning to ambiguous?
Correct answer: B
Ambiguous means capable of being understood in two or more possible ways. The cause-and-effect clue confirms it: because the schedule could be read two ways, students came on two different days. Do not confuse it with ambivalent, which means having mixed feelings.
- A Having mixed feelings is the meaning of ambivalent, a look-alike word; a schedule cannot have feelings.
- B Correct: ambiguous means open to two or more possible meanings.
- C Impossible to read is the meaning of illegible, which is about handwriting or print; an ambiguous text can be read easily but understood in more than one way.
- D Using far too many words is the meaning of verbose; a wordy schedule is long, not necessarily open to two readings.
Learn this topic: How to work out an unfamiliar word from context clues 5-minute lesson
Source: Merriam-Webster, ambiguous · Merriam-Webster, ambivalent · Merriam-Webster, illegible ·
By the end of her long shift on her feet, Mrs. Alvarez noticed edema in both ankles. Which word or phrase is closest in meaning to edema?
Correct answer: A
Edema is an abnormal collection of watery fluid in a body tissue or cavity, so the area looks puffy or swollen. The word comes from a Greek word meaning swelling. Picture puffy ankles at the end of a long day on your feet: that puffiness is edema.
- A Correct: edema is an abnormal buildup of watery fluid in body tissue, which shows up as swelling.
- B Bruising from blood leaking into tissue is a bruise (ecchymosis), not a buildup of watery fluid.
- C Abnormal redness of the skin is erythema; edema is swelling, not a color change.
- D Itching is pruritus; edema describes swelling, not an itchy feeling.
Learn this topic: Health-care words for body position, location and direction 5-minute lesson
Source: Merriam-Webster, edema · Merriam-Webster, ecchymosis · Merriam-Webster, erythema · Merriam-Webster, pruritus ·
When Jordan stood up too quickly, his friend noticed a sudden pallor in his face. Which word or phrase is closest in meaning to pallor?
Correct answer: B
Pallor means a deficiency of color, especially in the face, or simply paleness. It comes from a Latin word meaning paleness, and the everyday word pale comes from the same Latin base. Memory hook: pallor and pale both start with "pal."
- A A sudden reddening of the face is flushing; pallor is the opposite, a loss of color.
- B Correct: pallor means a lack of color, especially of the face; paleness.
- C A bluish or purplish discoloring is cyanosis, not pallor.
- D A yellowish tint of the skin is jaundice; pallor means pale, not yellow.
Learn this topic: Health-care words for body position, location and direction 5-minute lesson
Source: Merriam-Webster, pallor · Merriam-Webster, pale · Merriam-Webster, flushed · Merriam-Webster, cyanosis · Merriam-Webster, jaundice ·
After her inner-ear infection, Aisha had vertigo whenever she rolled over in bed. Which word or phrase is closest in meaning to vertigo?
Correct answer: A
Vertigo is a sensation of motion in which a person or the person's surroundings seem to whirl dizzily. It comes from the Latin vertere, "to turn," the same root as revert. People often mix it up with a fear of heights, but that is acrophobia.
- A Correct: vertigo is a sensation that you or your surroundings are whirling or spinning.
- B Fear of heights is acrophobia; vertigo is a feeling of motion, not a fear.
- C Ringing or roaring heard in the ears is tinnitus, a different ear-related symptom.
- D Pain in the ear is an earache; vertigo is about a false sense of motion, not pain.
Learn this topic: Health-care words for body position, location and direction 5-minute lesson
Source: Merriam-Webster, vertigo · Merriam-Webster, revert · Merriam-Webster, tinnitus · Merriam-Webster, acrophobia · Merriam-Webster, earache ·
The city planted more shade trees to mitigate the summer heat in crowded neighborhoods. Which word or phrase is closest in meaning to mitigate?
Correct answer: C
To mitigate is to make something less severe, harmful or intense. Merriam-Webster lists alleviate as a synonym. Do not confuse it with migrate (move) or litigate (go to court): to mitigate is to soften the blow.
- A Moving from one place or region to another is the meaning of migrate, a look-alike word.
- B Carrying on a legal contest in court is the meaning of litigate, another look-alike.
- C Correct: mitigate means to make something less severe, painful or intense.
- D Making something worse or more intense is the meaning of aggravate, nearly the opposite of mitigate.
Learn this topic: How to work out an unfamiliar word from context clues 5-minute lesson
Source: Merriam-Webster, mitigate · Merriam-Webster, migrate · Merriam-Webster, litigate · Merriam-Webster, aggravate ·
After the fall, the X-ray showed that Mr. Dlamini's hip bone was intact. Which word or phrase is closest in meaning to intact?
Correct answer: A
Intact means whole and undamaged, untouched by anything that harms or lessens it. It comes from the Latin intactus: in- ("not") plus tactus ("touched"). Something intact is literally "not touched" by harm.
- A Correct: intact means untouched by anything that harms or diminishes; whole and uninjured.
- B A bruise is an injury with broken blood vessels under the skin; intact means untouched by harm.
- C A bone moved out of its normal position is dislocated, the opposite of intact.
- D A broken bone is fractured; intact means the bone is not damaged.
Learn this topic: Health-care words for body position, location and direction 5-minute lesson
Source: Merriam-Webster, intact · Merriam-Webster, bruise · Merriam-Webster, dislocate · Merriam-Webster, fracture ·
The health department reported only sporadic cases of measles this year. Which word or phrase is closest in meaning to sporadic?
Correct answer: B
Sporadic means happening occasionally or in scattered, irregular instances. In health writing it contrasts with endemic (always present in an area) and epidemic (affecting many people at once). Memory hook: sporadic sounds like "spotty," a case here and a case there.
- A Persisting over time in a particular region describes something endemic, not sporadic.
- B Correct: sporadic means occurring occasionally, singly, or in scattered instances.
- C Recurring at regular intervals is periodic; sporadic events are irregular.
- D Affecting a large number of people at the same time describes an epidemic, not sporadic cases.
Learn this topic: How to work out an unfamiliar word from context clues 5-minute lesson
Source: Merriam-Webster, sporadic · Merriam-Webster, epidemic · Merriam-Webster, periodic · Merriam-Webster, endemic ·
The care plan for Mrs. Kowalski lists dysphagia as a current problem. Based on its word parts, what is the best definition of dysphagia?
Correct answer: A
Dysphagia is difficulty in swallowing. Break it apart: dys- means difficult, abnormal or impaired, and phag- means eating. Watch its near twin dysphasia, with an s, which is a problem using or understanding language.
- A Correct: dys- means difficult or impaired and phag- refers to eating, so dysphagia is difficulty in swallowing.
- B Difficult or painful urination is dysuria; the root -uria refers to urine, not swallowing.
- C Trouble using or understanding language is dysphasia, a look-alike that differs by one letter (s for g).
- D Difficult or labored breathing is dyspnea; dysphagia has nothing to do with breathing.
Learn this topic: How to decode a word from its roots, prefixes and suffixes 5-minute lesson
Source: Merriam-Webster, dysphagia · Merriam-Webster, dys- · Merriam-Webster, phag- · Merriam-Webster, dysphasia · Merriam-Webster, dysuria · Merriam-Webster, -uria · Merriam-Webster, dyspnea ·
Ms. Patel was taken to the emergency department after an episode of syncope at the gym. Which word or phrase is closest in meaning to syncope?
Correct answer: C
Syncope (SING-kuh-pee) is a loss of consciousness caused by insufficient blood flow to the brain; in plain English, fainting. It comes from a Greek word meaning "cutting short," as if consciousness were briefly cut off. If a chart mentions syncope, think "passed out."
- A A painful, involuntary tightening of a muscle is a cramp, not syncope.
- B An abnormally rapid or pounding heartbeat is palpitation, not a loss of consciousness.
- C Correct: syncope is a loss of consciousness caused by too little blood flow to the brain; a faint.
- D Violent, involuntary muscle contractions describe a convulsion, not syncope.
Learn this topic: Health-care words for body position, location and direction 5-minute lesson
Source: Merriam-Webster, syncope · Merriam-Webster, cramp · Merriam-Webster, palpitation · Merriam-Webster, convulsion ·
A blood clot can occlude a vein deep in the leg. Which word or phrase is closest in meaning to occlude?
Correct answer: C
To occlude is to close up or block off something, such as a vessel or passage. It comes from Latin ob- ("in the way") plus claudere ("to shut"), the same root as close and include. An occluded vessel is shut, so nothing gets through.
- A To widen or expand is to dilate, the opposite of occlude.
- B To keep away from others or isolate is to seclude, a look-alike word.
- C Correct: occlude means to close up or block off; to obstruct.
- D To wear away gradually is to erode; occlude means to block, not to wear down.
Learn this topic: Health-care words for body position, location and direction 5-minute lesson
Source: Merriam-Webster, occlude · Merriam-Webster, include · Merriam-Webster, dilate · Merriam-Webster, seclude · Merriam-Webster, erode ·
Before starting the long hike, it would be prudent to check the weather forecast. Which word or phrase is closest in meaning to prudent?
Correct answer: A
Prudent means having or showing good judgment and restraint, especially in practical matters. A prudent person thinks ahead, like checking the weather before a hike. Do not confuse it with prudish (overly concerned with propriety) or impudent (rude).
- A Correct: prudent means showing good judgment or restraint; careful and wise.
- B Rude, disrespectful behavior is impudent, a look-alike with a nearly opposite tone.
- C Being excessively attentive to propriety, like a prude, is the meaning of prudish, a look-alike.
- D Recklessly bold describes audacious behavior, the opposite of prudent caution.
Learn this topic: How to work out an unfamiliar word from context clues 5-minute lesson
Source: Merriam-Webster, prudent · Merriam-Webster, prudish · Merriam-Webster, prude · Merriam-Webster, impudent · Merriam-Webster, audacious ·
After an hour outside in the freezing wind, the hiker's lips and fingertips looked cyanotic. Which word or phrase is closest in meaning to cyanotic?
Correct answer: D
Cyanotic means showing cyanosis, a bluish or purplish discoloration of the skin and mucous membranes caused by poorly oxygenated blood. The word part cyan- means blue, as in the cyan ink in a printer. Blue lips or fingertips are the classic picture of cyanotic skin.
- A Yellowish skin describes someone who is jaundiced, not cyanotic.
- B Abnormal redness from inflammation is described as erythematous, not cyanotic.
- C Skin or lips that are cracked and roughened by wind or cold are chapped, not cyanotic.
- D Correct: cyanotic means marked by a bluish or purplish discoloration, as of the skin or lips.
Learn this topic: Health-care words for body position, location and direction 5-minute lesson
Source: Merriam-Webster, cyanotic · Merriam-Webster, cyan- · Merriam-Webster, jaundiced · Merriam-Webster, erythematous · Merriam-Webster, chapped ·
The label said the tablet was for sublingual use, so it should not be swallowed whole. Which word or phrase is closest in meaning to sublingual?
Correct answer: C
Sublingual means situated or administered under the tongue. Break it apart: sub- means under, and lingual means relating to the tongue (from Latin lingua, tongue). A sublingual tablet is placed under the tongue rather than swallowed.
- A Relating to the cheek is buccal; sublingual refers to the tongue, not the cheek.
- B Applied to a specific spot on the body, such as the skin, is topical.
- C Correct: sublingual means situated or given under the tongue.
- D Given by way of a vein is intravenous, not sublingual.
Learn this topic: Health-care words for body position, location and direction 5-minute lesson
Source: Merriam-Webster, sublingual · Merriam-Webster, sub- · Merriam-Webster, lingual · Merriam-Webster, buccal · Merriam-Webster, topical · Merriam-Webster, intravenous ·
The audiologist described Mr. Okafor's hearing loss as insidious. Which word or phrase is closest in meaning to insidious?
Correct answer: D
Insidious describes something that causes harm gradually or in a way that is not easily noticed, developing quietly before it shows. It comes from a Latin word for ambush, from insidere, "to sit in": an insidious problem lies in wait. Do not confuse it with invidious, which means likely to cause resentment.
- A A sudden, sharp onset is described as acute, the opposite of insidious.
- B Easily passed from person to person is contagious; insidious is about how quietly something develops.
- C Tending to cause resentment or envy is the meaning of invidious, a look-alike word.
- D Correct: insidious means developing so gradually that the problem is well established before it becomes apparent.
Learn this topic: Health-care words for body position, location and direction 5-minute lesson
Source: Merriam-Webster, insidious · Merriam-Webster, acute · Merriam-Webster, contagious · Merriam-Webster, invidious ·
The judges at the science fair tried to stay impartial while scoring each project. Which word or phrase is closest in meaning to impartial?
Correct answer: B
Impartial means not biased, treating everyone equally. The prefix im- means not, and partial can mean favoring one side, so impartial means not favoring any side. A good referee or judge is impartial.
- A Making many difficult demands is the meaning of exacting; impartial is about fairness.
- B Correct: impartial means not partial or biased; treating all equally.
- C Restless or short of temper describes someone impatient, a look-alike word.
- D Relating to only a part rather than the whole is one meaning of partial, not impartial.
Learn this topic: How to work out an unfamiliar word from context clues 5-minute lesson
Source: Merriam-Webster, impartial · Merriam-Webster, partial · Merriam-Webster, impatient · Merriam-Webster, exacting ·
The nurse recorded one episode of emesis shortly after the patient finished lunch. Which word or phrase is closest in meaning to emesis?
Correct answer: A
Emesis is the act of vomiting. Nausea is the queasy feeling that may come before it, so the two are related but not the same. Memory hook: an emetic is something that causes vomiting, and both words share the same Greek root.
- A Correct: emesis means an act or instance of vomiting.
- B Stomach distress with an urge to vomit is nausea; emesis is the act of vomiting itself.
- C A loss of appetite is anorexia; emesis is vomiting.
- D Abnormally frequent, watery bowel movements are diarrhea, not emesis.
Learn this topic: Health-care words for body position, location and direction 5-minute lesson
Source: Merriam-Webster, emesis · Merriam-Webster, diarrhea · Merriam-Webster, nausea · Merriam-Webster, anorexia · Merriam-Webster, emetic ·
Although her first three grant applications were rejected, the tenacious researcher kept revising and resubmitting. Which word or phrase is closest in meaning to tenacious?
Correct answer: D
Tenacious means persistent and determined, holding fast to a goal. It comes from the Latin tenere, "to hold"; a tenacious person holds on. Be careful with the look-alikes tenuous (weak, flimsy) and tenable (capable of being defended).
- A Capable of being held or defended, as of an argument, is the meaning of tenable.
- B Having little substance or strength is the meaning of tenuous, a look-alike that is nearly the opposite.
- C Feeling nervous tension is the meaning of tense, a word that only looks similar.
- D Correct: tenacious means persistent in holding onto or seeking something; not giving up.
Learn this topic: How to work out an unfamiliar word from context clues 5-minute lesson
Source: Merriam-Webster, tenacious · Merriam-Webster, tense · Merriam-Webster, tenuous · Merriam-Webster, tenable ·
Sign in to keep your progress on all devices. It's free.
Fix these topics first
Every topic
Your score by section
This is an estimate from a practice set. Official scores come only from the test maker.
About this HESI A2 Vocabulary practice test
- PracticePractice mode shows the answer after each question, with no timer. Timed exam mode comes with full access.
- Go at your paceYour answers save in this browser, so you can stop and come back later.
- Read your reportSee your score for each section, and why every answer is right or wrong.
- Fix weak spotsMissed questions go to your mistake book. Learn the topic, then try again.
What your score means
Each program picks the sections and sets its own minimum.
| Program | Sections | Minimum |
|---|---|---|
| Baylor University | Math, English composite | 80 or better on each |
| Lone Star College, ADN | Reading, Grammar, Vocabulary, A&P, Math, Critical Thinking | 80 on each section (750 for Critical Thinking) |
| University of Arizona | Math, Reading, Vocabulary, Biology | 75% combined score |
| CNM (New Mexico) | Grammar, Reading, Vocabulary, Biology, Chemistry, Math | 75% on every section and 75% composite |
Your score is the percent you got right in each section. The real HESI A2 also scores each section as percent correct, and your cumulative score is the average of the sections you took.
Rules change every year. Always check your own program’s page. Checked October 15, 2026.
HESI A2 format
| Section | Questions (scored) | Suggested time |
|---|---|---|
| Reading | 55 (50) | 60 min |
| Vocabulary | 55 (50) | 50 min |
| Grammar | 55 (50) | 50 min |
| Math | 55 (50) | 50 min |
| Biology | 30 (25) | 25 min |
| Chemistry | 30 (25) | 25 min |
| Anatomy & Physiology | 30 (25) | 25 min |
Five questions in each section are unscored pilot items. Elsevier doesn’t publish these numbers; they come from nursing programs’ pages.
Common questions
Is this the real HESI A2?
No. These are original practice questions we wrote to the published HESI A2 content outline. They are not real exam questions.
How long does it take?
This set has 25 questions. Practice mode has no timer, so take as long as you need. With full access, exam mode gives you 23 minutes.
Can I stop and finish later?
Yes. Your answers save in this browser, so you can close the page and pick up where you left off.
Which sections should I practice?
The ones your program requires. Each school chooses its HESI A2 sections, so check your program’s page first.
What HESI A2 score do I need?
It depends on your program. The four programs above ask for 75% to 80%.
Is this practice test free?
Yes. No card. Start without an account; after 15 questions, a free account saves your progress. A paid plan unlocks all 666 verified HESI A2 questions, timed exam mode, sets on one topic and a score for every topic.
Next steps
Sources (checked October 15, 2026)
- Elsevier, HESI NG A2 faculty guide (schools choose modules, calculator and time)
- South Texas College, HESI exam information (50 scored + 5 pilot items)
- Tarrant County College, HESI A2 exam information
- Baylor University, HESI A2 information
- Lone Star College, HESI A2 test
- University of Arizona, HESI admission assessment
- CNM, HESI A2 exam