CNA common mistakes
CNA · Understand the traps and how to avoid them.
Accepting a task outside the nurse aide's scope because the nurse is busy - for example applying a medicated ointment, changing a sterile dressing, or handing a resident a pill from a cup left at the bedside.
Candidates want to be seen as helpful and cooperative, and they confuse 'the resident needs it now' with 'I am allowed to do it.' Under exam pressure they pick the answer that solves the problem fastest instead of the one that stays in role.
What to do instead
Memorize the scope line: assist with ADLs, take vitals, observe and report - never assess, medicate, or perform sterile procedures. Rehearse a two-sentence refusal script out loud ('I'm not able to do that, but I'll get the nurse right now') so it becomes the automatic answer on scope questions.
Charting before the care is finished, charting a task as complete because it is on the assignment sheet, or writing judgments such as 'resident was uncooperative and difficult today.'
End-of-shift time pressure pushes aides to 'clear the list' on paper, and everyday language habits slip into the record. Candidates underestimate how closely documentation items test objectivity and timing.
What to do instead
Write only after doing, only what was observed, in the order it happened, with date, time, and signature. Convert judgments into facts plus a quote: 'Resident said, "I don't want a shower," refused; nurse notified at 0815.' Practice rewriting three subjective sentences into objective ones before the exam.
Wearing gloves for several residents in a row, or pulling off gloves and moving straight to the next resident without washing hands, treating gloves as a substitute for hand hygiene.
Gloves feel clean and give a false sense of protection; the exam room scenario rarely shows visible soil, so the risk feels abstract. Candidates also mix up 'before' and 'after' contact moments.
What to do instead
Anchor the rule: gloves are PPE, not a hand wash - wash before contact, after glove removal, and between every resident. When a question mentions any resident contact, scan for the hand hygiene step first and eliminate answers that skip it.
Pulling a resident up by the arms or shoulders, twisting the torso during a transfer, or moving a resident without a gait belt and with the bed at hip height or above.
Rushing to beat a schedule and underestimating how much of the resident's weight the aide actually supports. Candidates also forget that the resident's shoulders are a fragile lever, especially in frail or arthritic residents.
What to do instead
Use the sequence every time: lock wheels, raise bed to working height, gait belt on, wide base, bend knees, keep resident close, pivot with the feet, never twist. Choose 'get a coworker to help' whenever a question hints the resident is heavy, unsteady, or combative.
Finding a resident on the floor and starting to lift them alone, or leaving the resident to search for the nurse instead of staying and calling for help from where they are.
Panic plus a reflex to 'fix it fast' produces an action before an assessment. Candidates also skip checking for injury because they focus on getting the person back to bed.
What to do instead
Learn the fixed order: stay with the resident, call for help without leaving, do not move them, check for injury and pain, then assist only as directed. Any answer where the aide lifts alone or walks away is wrong - eliminate it on sight.
Counting respirations for 15 seconds and multiplying by four, or announcing 'I'm going to count your breathing now,' and taking a blood pressure through a sleeve or with the cuff over the elbow.
Respirations are the vital sign candidates treat as an afterthought, and announcing it lets the resident change their breathing. Blood pressure errors come from skipping the setup steps under time pressure.
What to do instead
Count respirations for a full minute while still appearing to take the pulse, and never tell the resident. For blood pressure: bare arm, cuff one inch above the elbow, cuff bladder sized to the arm, and recheck anything abnormal before reporting.
Feeding a resident with swallowing difficulty too quickly, giving thin liquids when thickened liquids are ordered, or leaving the head of the bed flat after a meal.
Mealtime is rushed and the order is seen as a paperwork detail rather than a safety limit. Candidates also read 'feed the resident' as 'get the food in,' not 'pace and position.'
What to do instead
Connect the order to the consequence: thin liquids and fast feeding cause aspiration. Use small bites, alternate with swallowing checks, keep the resident upright during and after the meal, and sit at eye level. Choose answers that stop feeding and report coughing or a wet voice.
Entering without knocking, leaving a resident exposed while gathering supplies, discussing a resident's condition in the hallway, or keeping a resident in place with a lap tray or tightly tucked sheets to stop them getting up.
Task focus narrows attention to the body part being washed rather than the person. Restraint-by-convenience grows out of genuine fear of falls and is not recognized as a restraint or a rights violation.
What to do instead
Default to closed doors, curtains, a bath blanket over the exposed area, and a knock-and-wait. Treat any device the resident cannot remove, or that limits movement for staff convenience, as a restraint that must never be applied without an order - and answer rights questions with the choice that preserves autonomy and reports first.
Not reporting a reddened area over the tailbone or heels because it 'blanches' or looked the same last shift, or skipping the scheduled repositioning because the resident is asleep or comfortable.
Aides assume a change must be dramatic to be reportable, and don't want to wake a resting resident. Early pressure injury looks minor and is easy to file mentally as 'just redness.'
What to do instead
Report any new redness, warmth, or broken skin the same shift, and describe it plainly: location, size, whether it blanches, when it appeared. Turn and reposition on the care plan schedule regardless of sleep, and offload heels with pillows.
Bouncing or forcing a joint at the end of the range, doing passive range of motion for a resident who can move independently, or moving a joint past the point where the resident reports pain.
Candidates equate a bigger stretch with a better outcome and don't distinguish passive from active-assisted from active. Pain is treated as something to work through rather than a stop signal.
What to do instead
Move slowly to the point of resistance, never past pain, support the joint above and below, and switch to encouraging self-movement when the resident can do it. On the exam, pick the answer that stops at resistance and reports pain.