CNA Estudio
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Vocabulary, common mistakes, and tips to walk into your exam with confidence.

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What is a CNA, and what do they do?
A CNA (Certified Nursing Assistant) is a healthcare professional trained and certified to provide basic, hands-on care to patients or residents, always under the supervision of a registered nurse (RN) or licensed practical nurse (LPN).
What does a CNA do day to day?
- Help with basic activities of daily living: bathing, dressing, eating, and moving around.
- Take and record vital signs (temperature, pulse, respiration, blood pressure).
- Assist with transfers and repositioning to prevent pressure injuries.
- Provide comfort and emotional support to residents.
- Report any change in a resident's condition to the nurse.
- Keep the environment clean and safe.
- Document the care provided.
Where does a CNA work?
Mainly in nursing homes, hospitals, assisted living facilities, and home health care.
Why is it a great starting point in healthcare?
Training takes weeks, not years, making it one of the fastest ways to start working in healthcare. It's also a great first step if you want to continue on to become an LPN or RN later on.
English & Spanish vocabulary
The exam is in English. These are common terms you'll encounter, with their translation and meaning.
| English | Español | Meaning |
|---|---|---|
| Vital signs | Signos vitales | Temperature, pulse, respiration, and blood pressure. |
| Activities of Daily Living (ADL) | Actividades de la Vida Diaria (AVD) | Basic self-care tasks like bathing, dressing, and eating. |
| Range of Motion (ROM) | Rango de movimiento | How far a joint can move. |
| Ambulation | Deambulación | The act of walking. |
| Perineal care | Cuidado perineal | Cleaning of the genital and anal area. |
| Catheter | Catéter | A tube used to drain urine from the bladder. |
| Dementia | Demencia | Progressive loss of memory and cognitive function. |
| Hospice | Cuidados paliativos / Hospicio | Care focused on comfort for terminally ill patients. |
| Nosocomial infection | Infección nosocomial | An infection acquired within a healthcare facility. |
| Standard precautions | Precauciones estándar | Infection control practices used with all patients. |
| Isolation | Aislamiento | Separating a patient to prevent the spread of infection. |
| Pressure injury / Pressure ulcer | Úlcera por presión | Skin damage caused by prolonged pressure. |
| Fowler's position | Posición de Fowler | A semi-sitting position. |
| Supine | Decúbito supino | Lying flat on the back. |
| Prone | Decúbito prono | Lying face down. |
| Lateral position | Posición lateral | Lying on the side. |
| Dangling | Sentarse al borde de la cama | Sitting on the edge of the bed with legs hanging down. |
| Restraint | Restricción física | A device that limits a person's movement. |
| Gait belt | Cinturón de transferencia | A belt used to assist with walking or transferring a resident. |
| Draw sheet | Sábana de deslizamiento | A sheet used to reposition a resident with less friction. |
| Mechanical lift (Hoyer lift) | Elevador mecánico | A mechanical device used to lift and transfer residents. |
| Aspiration | Aspiración / Broncoaspiración | When food or liquid enters the lungs instead of the stomach. |
| Dysphagia | Disfagia | Difficulty swallowing. |
| Incontinence | Incontinencia | Inability to control the bladder or bowels. |
| Edema | Edema | Swelling caused by fluid retention. |
| Cyanosis | Cianosis | Bluish skin color caused by low oxygen levels. |
| Lethargy | Letargo | Extreme tiredness or lack of energy. |
| Confidentiality | Confidencialidad | Keeping a resident's information private. |
| HIPAA | HIPAA | A U.S. law that protects patients' health information. |
| Advance directive | Directiva anticipada | A document stating a patient's healthcare wishes. |
| Negligence | Negligencia | Failing to provide reasonable care, causing harm to the resident. |
| Abandonment | Abandono | Leaving a resident without arranging for someone else to continue their care. |
| Scope of practice | Alcance de práctica | The tasks a professional is legally authorized to perform. |
| Skin turgor | Turgencia de la piel | Skin elasticity, used to assess hydration. |
| Intake and Output (I&O) | Ingesta y Eliminación | Measuring the fluids that go into and out of the body. |
| NPO (nothing by mouth) | NPO (nada por vía oral) | A medical order meaning the patient should not eat or drink anything. |
| PRN (as needed) | PRN (según sea necesario) | Refers to care or medication given only when needed. |
| Objective data | Datos objetivos | Measurable or directly observed information (e.g. a temperature reading). |
| Subjective data | Datos subjetivos | Information the resident reports feeling (e.g. 'I have a headache'). |
| Restorative care | Cuidado restaurativo | Helping the resident regain or maintain their highest level of independence. |
Common mistakes to avoid
On the written exam
- Not reading the full question before answering — picking the first option that 'sounds right' without ruling out the others.
- Leaving questions blank because you got stuck — it's better to answer with your best guess and keep moving.
- Spending too much time on one hard question and running out of time for the rest.
- Confusing the CNA's scope of practice — choosing answers that involve tasks only licensed nurses can do (medications, diagnoses).
- Arriving tired from not sleeping well the night before — fatigue affects your focus.
On the practical skills exam
- Forgetting to wash your hands at the start and/or end of the procedure — it's one of the most closely watched steps.
- Not explaining to the resident what you're about to do before starting.
- Not verifying the resident's identity before beginning the skill.
- Skipping steps out of nerves, even when you know them — practicing out loud helps you remember the order.
- Not protecting the resident's privacy (leaving the door open, not covering them).
- Forgetting to leave the resident in a safe, comfortable position, with the bed at a low height, when finished.
- Not asking for help when needed, putting the resident or yourself at risk.
- Working so fast out of nerves that you forget to say the steps out loud, which the evaluator often needs to hear.
Tips to study and pass with confidence
- Practice a little every day instead of cramming the night before — spaced repetition sticks better in memory.
- Practice skills out loud, narrating each step just like you will on exam day.
- Use the timed mock exam to get used to the real time pressure you'll face.
- Focus on your weak areas using your progress tracking, instead of only reviewing what you already know.
- Sleep well the night before your exam and arrive with plenty of time to spare, without rushing.
- On practical exam day, speak out loud explaining what you're doing — many evaluators need to hear you say the steps, not just see them.
- If you get nervous, breathe and take a moment — it's okay to pause briefly to remember the next step.
- Read each question twice before answering on the written exam.
How to study for the CNA exam if you have a job
You have 6 months of access — you don't need to study it all at once. Here are some ways to make progress without burning out.
- Study in short 15-20 minute sessions instead of long blocks that are hard to sustain with a full-time job.
- Use dead time: on the bus, during your lunch break, standing in line — a few practice questions fit into almost any moment.
- Set a small, realistic goal each week (like 'finish one question category') instead of one huge goal for the whole month.
- Mentally review skills by narrating the steps while doing chores — you don't always need to be sitting down with the material open.
- Use your progress tracking to focus on your weak areas instead of reviewing everything equally — you'll move faster with the time you have.
- Let your family or roommates know your set study times, even if they're short, so they can respect that time.
- Give yourself permission to rest one day a week — a sustainable pace beats burning out in two weeks and giving up.
What to expect on CNA exam day
Exact details vary a bit by state and exam provider (Prometric, Credentia, Pearson VUE, etc.), but here's generally how it works.
Written (or oral) exam
- Multiple-choice questions, usually between 60 and 70 questions.
- You'll have a time limit, typically 90 minutes to 2 hours.
- It may be on a computer or on paper, depending on the test site.
- If English isn't your first language, many states offer an oral exam option or extra time — ask your training program.
Practical (skills) exam
- An evaluator randomly selects about 5 skills from a list of roughly 22-25 for you to demonstrate.
- Handwashing is almost always a required part of the exam.
- You'll have a time limit to complete them (often around 25-30 minutes total).
- You'll practice on a manikin or a volunteer 'patient,' depending on the test site.
- You need to say out loud what you're doing — the evaluator grades both what they see AND what they hear you say.
What to bring
- A valid photo ID and your exam registration confirmation.
- A watch with a second hand (for counting pulse and respirations) if the site doesn't provide one.
- Comfortable, closed-toe shoes, like you'd wear to work.
- Cell phones usually aren't allowed inside the testing room.
If you fail only one part (written or practical), you usually only need to retake that part, not the whole exam. Confirm the exact details for your state with your training program or the official exam provider.
How to find your testing center
We're not going to give you a specific address here, and that's on purpose: testing centers — and even which company runs the exam — vary by state and can change year to year, so the only safe way to get it right is to check your state's official source, not a list that can go stale.
Step 1: your Nurse Aide Registry
By federal law (OBRA 1987), every state has an official nurse aide registry. That registry is what tells you exactly which company runs your exam and where it's held.
State registry directory →Step 2: search the site of the company that runs your exam
Most states use one of these companies. Your state registry (step 1) or your training program will tell you which one applies to you:
Step 3: your training program
If you took a CNA class, the program you trained with usually already knows exactly where and how to register their students — often your fastest, most reliable option.
Additional official help: every state also has a Board of Nursing that oversees this process, in case you need to confirm something directly with the state authority.
Managing stress and depression as a caregiver
Caring for others is beautiful work, but it's also exhausting — physically and emotionally. Feeling stressed, burned out, or even deeply sad in this job is more common than it seems, and it doesn't mean you're not cut out for it.
Signs of caregiver stress or burnout
- Feeling exhausted even after sleeping or resting.
- Irritability or short patience, even over small things.
- Feeling overwhelmed by tasks you used to handle easily.
- Frequent headaches, stomach issues, or muscle tension with no clear medical cause.
- Pulling away from friends, family, or activities you used to enjoy.
- Feeling 'checked out' or numb toward work or residents.
When it may be more than stress: signs of depression
Ordinary stress usually improves with rest. Depression is different — it's more persistent and doesn't always go away just from sleeping well or taking a day off. Pay attention if, for two weeks or more, you experience:
- Sadness, emptiness, or hopelessness on most days.
- Loss of interest in things you used to enjoy.
- Noticeable changes in appetite or sleep (sleeping much more or much less).
- Trouble concentrating or making simple decisions.
- Feeling worthless or excessively guilty.
- Thoughts that life isn't worth living, or of harming yourself.
If several of these sound like you, this isn't something you have to handle alone, and it's nothing to be ashamed of — it's a valid reason to seek professional help, just as you would for any other health condition.
Ways to take care of yourself while caring for others
- Set clear boundaries between work and personal life — let yourself switch off 'caregiver mode' once your shift ends.
- Prioritize the basics: enough sleep, eating well, and moving your body, even if it's just a short walk.
- Actually take your breaks and days off, without guilt — resting doesn't make you less dedicated to your work.
- Talk to coworkers who understand what you're going through — sometimes you just need someone to validate it, not fix it.
- After an especially hard shift (a loss, a tough situation), give yourself permission to feel it instead of just pushing through.
- Keep your expectations realistic — you can't do everything perfectly, and that's okay.
- Practice something that helps release tension: deep breathing, journaling, prayer, music — whatever works for you.
If you need help right now
This page is not a substitute for help from a mental health professional. If the sadness isn't going away, or you've had thoughts of harming yourself, please talk to a doctor, a therapist, or reach out to the free, confidential U.S. hotline:
988 Suicide & Crisis Lifeline
Call or text 988 — available 24 hours a day, 7 days a week.
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