Infection control and safety is 15 of the 150 scored items on the NHA CCMA. Answer 10 exam style questions and see exactly which concepts would cost you points on test day.
Start the 10 questions →A patient in the exam room has confirmed Clostridioides difficile infection. After removing gloves, which hand hygiene method should the medical assistant use?
These items sit inside Clinical Patient Care, the domain worth 84 of 150 scored items. Expect scenario questions where you choose the right action, not definitions to recite.
Prefer to read first? Every question from the practice set above, with the correct answer and why each wrong option is wrong.
Answer: A. C. difficile forms spores that alcohol does not kill. The mechanical action of washing with soap and water and rinsing is what removes spores from the hands. Gloves reduce but do not eliminate contamination.
Why not B: Alcohol rub is the preferred method for most situations but is ineffective against C. difficile spores.
Why not C: A second application of alcohol still does not kill spores.
Why not D: Hands are cleaned after every glove removal; gloves can have microtears and hands are contaminated during removal.
Exam tactic: Spores (C. diff) and visibly soiled hands = soap and water. Everything else = alcohol rub is fine.
Answer: C. Standard precautions treat all blood, body fluids, non-intact skin, and mucous membranes of every patient as potentially infectious. They apply universally because infection status is often unknown at the time of care.
Why not A: Symptoms trigger additional transmission-based precautions, not the baseline ones.
Why not B: Limiting precautions to known infections misses undiagnosed carriers, which is the whole reason the approach is universal.
Why not D: Isolation rooms add precautions on top of standard precautions; they do not replace them.
Exam tactic: Standard = everyone, always. Transmission-based = added for specific organisms.
Answer: B. Tuberculosis, measles, and varicella spread by tiny airborne particles that stay suspended. Airborne precautions require a fit-tested N95 or higher respirator for staff and ideally an airborne infection isolation (negative-pressure) room.
Why not A: Gown and gloves address contact spread; they do nothing for inhaled particles.
Why not C: A surgical mask blocks large droplets but does not filter the small airborne particles that carry tuberculosis.
Why not D: Tuberculosis is transmitted wherever an infectious patient breathes, including clinics.
Exam tactic: Airborne trio: TB, measles, varicella (chickenpox). Think N95 plus negative pressure.
Answer: B. Donning order goes from the largest, least contaminated-by-handling item to the item most likely to be contaminated: gown first, then mask or respirator, then eye protection, and gloves last so the glove cuffs go over the gown sleeves.
Why not A: Gloves first means they are contaminated while handling everything else.
Why not C: Gloves before the gown leaves the cuffs under the sleeves and contaminates the gown.
Why not D: Eye protection before the mask makes the mask straps hard to place and disturbs the goggles.
Exam tactic: Don: gown, mask, goggles, gloves. Doff: gloves, goggles, gown, mask. Gloves are last on and first off.
Answer: A. Needles are never recapped, bent, or broken. The safety mechanism is engaged right away and the device goes directly into a sharps container at the point of use. Delayed disposal is a leading cause of needlestick injuries.
Why not B: Bending or breaking a needle exposes the worker and the regular trash to a sharp.
Why not C: Leaving a used sharp on a tray, even briefly, creates an injury risk for everyone in the room.
Why not D: Two-handed recapping is the classic cause of needlesticks and is prohibited.
Exam tactic: Used needle → safety on → sharps box, right now. Never recap.
Answer: A. First aid is immediate washing of the site with soap and water (flush mucous membranes with water). The exposure is then reported right away so the employer's exposure control plan can start, including source-patient testing and any post-exposure prophylaxis, which is time-sensitive.
Why not B: Watching for symptoms misses the window in which post-exposure treatment can help.
Why not C: Squeezing and bleach are not recommended and can damage tissue; they do not reduce infection risk.
Why not D: Delaying the report delays evaluation and any prophylaxis, which works best when started quickly.
Exam tactic: Wash, report, get evaluated. Same day, not end of shift.
Answer: B. The chain of infection runs infectious agent → reservoir → portal of exit → mode of transmission → portal of entry → susceptible host. A contaminated surface acts as an environmental reservoir where organisms survive (some references also call it a fomite in indirect contact transmission). Of the links listed, disinfecting the surface removes the reservoir.
Why not A: Incubation period is a stage of disease, not a link in the chain.
Why not C: Portal of entry is protected by measures like covering wounds and wearing masks.
Why not D: The susceptible host link is addressed by measures such as vaccination and good health, not surface cleaning.
Exam tactic: Of these choices, a disinfected surface = reservoir removed. Hand hygiene = mode of transmission.
Answer: D. Sterilization (for example, steam autoclaving) kills every form of microbial life including spores. It is required for critical items such as surgical instruments. Disinfection kills most pathogens but not necessarily spores; sanitization reduces the number of organisms; antisepsis is applied to living tissue.
Why not A: Antisepsis refers to agents used on skin, such as alcohol or chlorhexidine, not instrument processing.
Why not B: Sanitization is the cleaning step that lowers the microbial count before disinfection or sterilization.
Why not C: Disinfection does not reliably destroy spores and is used for semi-critical and non-critical items.
Exam tactic: Sanitize (clean) → disinfect (kill most) → sterilize (kill all, including spores).
Answer: D. Indicator tape is a chemical indicator that changes color when exposed to the autoclave's temperature and steam. It shows the pack went through the process, not that every surface reached sterilizing conditions. Biological indicators (spore tests) are the true verification, run on a regular schedule.
Why not A: Only a passed biological indicator supports a guarantee; tape can change even if the load was packed too tightly.
Why not B: Sterile packs have a defined shelf life and are checked for intact packaging and dates before use.
Why not C: The spore test is a separate vial or strip incubated after the cycle, not the tape.
Exam tactic: Tape = it went through. Spore test = it actually worked.
Answer: C. Items are added by peeling back the wrapper and letting the contents fall onto the field from a safe height, keeping the hands and unsterile wrapper away. The outer 1-inch border of the drape is considered contaminated, and reaching over the field drops contaminants onto it.
Why not A: Ungloved hands, however clean, are not sterile.
Why not B: The 1-inch edge of a sterile drape is treated as unsterile.
Why not D: Reaching across the field exposes it to skin, sleeves, and airborne particles from the arm.
Exam tactic: Never reach over, never touch, never use the 1-inch border, never turn your back on a sterile field.
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