1Question
A hospitalized client with pulmonary tuberculosis has been on airborne precautions and is taking the prescribed medications. Which finding indicates that the precautions can be discontinued?
- The client's cough is no longer producing sputum.
- A repeat tuberculin skin test shows no induration.
- A chest x-ray shows that the lung cavities are smaller.
- Three consecutive sputum smears are negative for acid-fast bacilli and the client is improving on therapy.
Show the answer and explanation
Answer: D. Three consecutive sputum smears are negative for acid-fast bacilli and the client is improving on therapy.
Topic: discontinuing airborne precautions in tuberculosis
A client is considered no longer infectious when effective treatment is under way, symptoms are improving and three consecutive sputum smears collected at separate times are negative for acid-fast bacilli. These criteria show that organisms are no longer being expelled into the air.
Why the others are wrong
- A – A dry cough can still release droplet nuclei; symptoms alone do not prove the client is noninfectious.
- B – The skin test shows prior exposure and usually stays positive for life; it says nothing about current infectiousness.
- C – X-ray changes heal slowly and do not show whether live organisms are being expelled.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
2Question
A client receiving chemotherapy for lymphoma is admitted with painful vesicles in several separate skin areas on the trunk, face and one leg, and is diagnosed with disseminated herpes zoster (shingles). Which precautions does the nurse put in place?
- Standard precautions only, with the lesions kept covered
- Droplet precautions in a private room
- Contact precautions only
- Airborne and contact precautions in a negative-pressure room
Show the answer and explanation
Answer: D. Airborne and contact precautions in a negative-pressure room
Topic: disseminated herpes zoster precautions
Disseminated zoster, and zoster of any extent in an immunocompromised client, can spread the varicella-zoster virus through the air as well as by contact with the lesions. Airborne and contact precautions are kept in place until the lesions are dry and crusted, and only staff who are immune to varicella provide care.
Why the others are wrong
- A – This is adequate only for localized zoster in a client with a normal immune system whose lesions can be fully covered.
- B – Varicella-zoster virus is spread by the airborne route, not by large droplets.
- C – Contact precautions alone do not protect against airborne spread of virus from disseminated disease.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
3Question
A charge nurse is placing newly admitted clients in rooms on a medical unit. Which clients require droplet precautions?
Select all that apply.
- A client with pertussis
- A client with influenza
- A client with mumps
- A client with pulmonary tuberculosis
- A client with rotavirus gastroenteritis
- A client with a draining MRSA wound
Show the answers and explanation
Answers: A, B and C.
- A – A client with pertussis
- B – A client with influenza
- C – A client with mumps
Topic: droplet precautions by organism
Pertussis, influenza and mumps spread by large respiratory droplets produced by coughing, sneezing or talking. Droplet precautions mean a private room when possible and a surgical mask for anyone entering. Tuberculosis spreads on tiny airborne particles, and rotavirus and an MRSA wound spread by contact.
Why the others are wrong
- D – Tuberculosis spreads on small airborne particles and needs an airborne infection isolation room with a respirator, not a surgical mask alone.
- E – Rotavirus is spread by the fecal-oral route and on surfaces, so contact precautions are used.
- F – MRSA in a draining wound spreads by contact with the wound, hands and equipment, so contact precautions are used.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
4Question
A client is admitted to a protective environment room after an allogeneic hematopoietic stem cell transplant. Which room features are expected?
Select all that apply.
- Positive air pressure relative to the corridor
- Negative air pressure with air exhausted to the outside
- Room door kept closed
- HEPA filtration of incoming air
- Fresh-cut flowers brought in by family
Show the answers and explanation
Answers: A, C and D.
- A – Positive air pressure relative to the corridor
- C – Room door kept closed
- D – HEPA filtration of incoming air
Topic: protective environment room features
A protective environment guards a severely immunocompromised client from airborne fungal spores and other organisms. Air is filtered through HEPA filters, the room is under positive pressure so air flows out to the corridor, and the door stays closed. Flowers and potted plants carry mold and bacteria and are not allowed.
Why the others are wrong
- B – Negative pressure pulls corridor air into the room and holds the client's air inside; it is for airborne infection isolation, not for protecting the client.
- E – Fresh-cut flowers and plants harbor mold spores and bacteria in soil and standing water, which can cause serious infection in this client.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
5Question
A nurse is performing a surgical hand scrub before assisting in the operating room. Which technique is correct?
- Keeps the hands lower than the elbows during the scrub so that soap and water run off the fingertips
- Keeps the hands up and away from the body, higher than the elbows, during the scrub and rinse
- Turns off the faucet by hand after the final rinse
- Dries the elbows first and then the hands with the same towel
Show the answer and explanation
Answer: B. Keeps the hands up and away from the body, higher than the elbows, during the scrub and rinse
Topic: surgical hand scrub technique
During a surgical scrub the hands stay above the elbows so water drains from the cleanest area, the fingertips, toward the elbows. Rinsing runs fingertips to elbows, the water is controlled by a knee, foot or sensor control, and the hands are dried first with a sterile towel.
Why the others are wrong
- A – With the hands lower than the elbows, dirty water from the arms runs down over the hands and contaminates them.
- C – Turning off the faucet by hand recontaminates the scrubbed hands; knee, foot or sensor controls are used.
- D – The hands are dried first, then the forearms and elbows, using a different part of the sterile towel so the hands are not recontaminated.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
6Question
A nurse is putting on sterile gloves using the open method and has gloved the dominant hand. Which action keeps the technique sterile?
- Slides the gloved fingers under the cuff of the second glove to lift it onto the other hand
- Pinches the outside of the second glove with the bare fingers to stretch it open
- Smooths the fit of the first glove using the bare hand
- Grasps the inside of the second glove's cuff with the gloved hand
Show the answer and explanation
Answer: A. Slides the gloved fingers under the cuff of the second glove to lift it onto the other hand
Topic: open gloving technique
The outer surface of a sterile glove is sterile and the inside of the cuff touches only bare skin. The gloved hand therefore touches only the outside of the second glove, and slides under the folded cuff to lift it into place.
Why the others are wrong
- B – The bare fingers would contaminate the outside of the glove, which must stay sterile.
- C – Touching the sterile glove with the bare hand contaminates it.
- D – The inside of the cuff touches the nurse's skin; touching it with the sterile gloved hand contaminates the glove.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
7Question
A nurse wearing a sterile gown and gloves is waiting at a sterile field for a procedure to begin. Where should the nurse keep the hands?
- Tucked under the opposite axillae
- Hanging down at the sides, below the level of the waist, to keep them out of the way of the field
- Clasped behind the back
- Clasped together in front of the body, between chest and waist level
Show the answer and explanation
Answer: D. Clasped together in front of the body, between chest and waist level
Topic: sterile zone of the gown
The front of a sterile gown from about chest level to the level of the sterile field, and the sleeves, are considered sterile. The hands are kept in view in front of the body in that zone. The axillae, underarms, neckline, back and area below the waist are not sterile.
Why the others are wrong
- A – The axillae are not sterile, and perspiration soaks the gown there, so hands tucked under the arms are contaminated.
- B – Hands hanging below the waist fall below the sterile field level and are considered contaminated.
- C – Hands out of sight behind the back cannot be watched, so sterility cannot be assured.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
8Question
A nurse is pouring sterile saline from a newly opened bottle into a sterile basin on a sterile field. Which action maintains sterility?
- Holds the bottle with its label facing away from the palm
- Reaches across the sterile field to pour from directly above the basin
- Pours a small amount into a waste container first to cleanse the lip of the bottle
- Touches the lip of the bottle to the basin edge to stop splashing
Show the answer and explanation
Answer: C. Pours a small amount into a waste container first to cleanse the lip of the bottle
Topic: pouring sterile solution
The lip of the bottle may have been touched when the cap was removed, so a small amount is poured into a waste container first to rinse it. The label stays toward the palm so solution does not run over it, and the bottle is held away from the field without the nurse reaching across it.
Why the others are wrong
- A – The label should face the palm so that solution does not run down and obscure or wet the label.
- B – Reaching over a sterile field can drop contaminants onto it; the nurse pours from the edge without crossing it.
- D – Touching the bottle to the basin transfers organisms from the non-sterile outer rim into the sterile container.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
9Question
A nurse is planning care for the day. For which procedures must the nurse use sterile technique?
Select all that apply.
- Inserting an indwelling urinary catheter
- Giving an oral medication
- Giving a bed bath
- Changing the dressing on a central venous catheter
- Starting a nasogastric tube feeding
Show the answers and explanation
Answers: A and D.
- A – Inserting an indwelling urinary catheter
- D – Changing the dressing on a central venous catheter
Topic: choosing sterile or clean technique
Sterile technique is used when a procedure enters a normally sterile body area such as the bladder or bloodstream, or involves a surgical or invasive site. Inserting a urinary catheter and changing a central line dressing both need it. Oral medication, bathing and tube feeding use medical (clean) asepsis.
Why the others are wrong
- B – The mouth is not a sterile area; clean technique with hand hygiene is enough.
- C – Bathing involves intact skin, which is not sterile; clean technique is used.
- E – The gastrointestinal tract is not sterile, so clean technique is appropriate for tube feeding.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
10Question
A hospital is reviewing practices to reduce central line-associated bloodstream infections in adult clients. Which practices belong in the prevention bundle?
Select all that apply.
- Hand hygiene before inserting or accessing the catheter
- Skin antisepsis with a chlorhexidine-based solution
- Maximal sterile barrier precautions during insertion
- Routine replacement of every central line on a fixed schedule
- Daily review of whether the line is still needed
- Preferring the femoral vein as the insertion site
Show the answers and explanation
Answers: A, B, C and E.
- A – Hand hygiene before inserting or accessing the catheter
- B – Skin antisepsis with a chlorhexidine-based solution
- C – Maximal sterile barrier precautions during insertion
- E – Daily review of whether the line is still needed
Topic: central line infection prevention bundle
Central line infection bundles include hand hygiene, chlorhexidine skin antisepsis, full sterile barriers (cap, mask, sterile gown and gloves, large drape) at insertion, and daily review so the line is removed as soon as it is not needed. Routine scheduled replacement does not lower infection rates, and the femoral site carries a higher infection risk in adults.
Why the others are wrong
- D – Replacing lines on a fixed schedule does not reduce infection and exposes the client to repeated insertion risks; lines are changed when clinically indicated.
- F – The femoral site is associated with higher infection risk in adults, so subclavian or other sites are preferred when appropriate.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
11Question
A client who has been on contact precautions for several days tells the nurse, 'I feel like I have the plague, and nobody wants to come near me.' Which nursing action is best?
- Tell the client that these feelings are normal and will pass
- Cut the number of room entries to the minimum possible to lower the risk of spreading the organism
- Acknowledge the feeling, explain why, and plan regular visits and activities
- Ask family members to postpone visiting until precautions end
Show the answer and explanation
Answer: C. Acknowledge the feeling, explain why, and plan regular visits and activities
Topic: psychosocial effects of isolation
Isolation can cause loneliness, anxiety and a sense of stigma, and clients on precautions may receive fewer visits. The nurse acknowledges the feeling, explains the purpose and temporary nature of precautions, and plans contact so the client does not feel avoided. Visitors may come after being taught the required precautions.
Why the others are wrong
- A – This brushes off the concern and offers no explanation or action, so the client still feels avoided.
- B – Fewer visits increase loneliness; precautions are followed correctly, not by avoiding the client.
- D – Family can visit once taught the precautions; asking them to stay away adds to the isolation.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
12Question
Several residents on one wing of a long-term care facility develop fever, cough and body aches, and influenza is confirmed in two of them. Which measures should the nurse support?
Select all that apply.
- Droplet precautions for residents with influenza-like illness
- Suspension of communal dining and group activities on the affected wing
- Antiviral chemoprophylaxis for residents who are not ill, as ordered
- Allowing ill staff to work if they wear a mask
- Waiting for laboratory confirmation of every case before starting control measures
- Restricting or screening ill visitors
Show the answers and explanation
Answers: A, B, C and F.
- A – Droplet precautions for residents with influenza-like illness
- B – Suspension of communal dining and group activities on the affected wing
- C – Antiviral chemoprophylaxis for residents who are not ill, as ordered
- F – Restricting or screening ill visitors
Topic: influenza outbreak in long-term care
When influenza is suspected in a long-term care facility, control measures begin at once: droplet precautions for ill residents, limiting group activities, antiviral prophylaxis for residents as directed by the provider and health department, and keeping ill visitors and ill staff away. Waiting for every test result delays control and allows spread.
Why the others are wrong
- D – Ill staff must stay home; a mask does not make it safe to care for frail residents while infectious.
- E – Control measures begin when an outbreak is suspected; waiting for every result lets influenza spread.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
13Question
A child with fever and a spreading rash is suspected of having measles after sitting in a crowded emergency department waiting room for 45 minutes. The child is now in an airborne infection isolation room. Which action should the nurse take next?
- Wait for laboratory confirmation before informing anyone, to avoid alarm
- Notify infection prevention and list the people exposed, with their immunity status
- Ask everyone in the waiting room to leave the department immediately without recording names
- Give every client in the waiting room a surgical mask and let them stay
Show the answer and explanation
Answer: B. Notify infection prevention and list the people exposed, with their immunity status
Topic: measles exposure in a waiting room
Measles spreads on airborne particles that remain in the air after the client leaves, so people in the waiting room were exposed. Infection prevention is notified on suspicion, and exposed people are identified and their immunity checked so that vaccine or immune globulin can be offered and non-immune people monitored or excluded as directed.
Why the others are wrong
- A – Exposed people can be protected only if identified early, and the window for post-exposure vaccine is short.
- C – Sending everyone away without recording who they are makes follow-up impossible and spreads possible infection into the community.
- D – Surgical masks do not protect against airborne particles, and exposure has already occurred.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
14Question
A case of measles is confirmed in a student at an elementary school. As the school nurse, which action is most appropriate?
- Send home only the classmates who have a fever or rash
- Ask all parents to watch for symptoms, with no changes to attendance
- Identify students and staff with no evidence of immunity, offer vaccine, and exclude those left unprotected through the incubation period as the health department directs
- Have all students wear surgical masks in class for the rest of the term
Show the answer and explanation
Answer: C. Identify students and staff with no evidence of immunity, offer vaccine, and exclude those left unprotected through the incubation period as the health department directs
Topic: measles outbreak control in a school
People without evidence of measles immunity who are exposed can be infected before they show symptoms. Immunity is verified from vaccine records or proof of disease or titer, MMR vaccine is offered (it can help if given within 72 hours of exposure), and those who stay unprotected are excluded for the incubation period in line with the health department.
Why the others are wrong
- A – People are contagious before symptoms appear, so waiting for fever or rash lets spread continue.
- B – Continuing attendance for non-immune exposed students lets the disease spread to others.
- D – Surgical masks do not reliably prevent airborne spread, and masks do not replace identifying and excluding susceptible people.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
15Question
A nurse manager is writing a dress and hygiene policy for an intensive care unit. Which statement about nails should the policy include?
- Artificial nails are acceptable if gloves are worn for all client contact and hands are rubbed afterward
- Staff giving direct care may not wear artificial nails, and natural nails are kept short
- Natural nails may be any length if they are scrubbed daily
- Alcohol hand rub makes nail restrictions unnecessary
Show the answer and explanation
Answer: B. Staff giving direct care may not wear artificial nails, and natural nails are kept short
Topic: artificial nails and hand hygiene
Artificial nails and extenders are linked to higher counts of organisms on the hands and to outbreaks in intensive care. Health care workers who give direct care to high-risk clients should not wear them, and natural nails should be kept short.
Why the others are wrong
- A – Gloves can tear or leak, and organisms on the nails can still reach clients; artificial nails are avoided in direct care.
- C – Long natural nails harbor organisms even after scrubbing; nails should be kept short.
- D – Hand rub cannot fully clean under artificial or long nails, so the restriction is still needed.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
16Question
A nurse is teaching a new graduate about standard precautions. To which of the following do standard precautions apply?
Select all that apply.
- Sweat
- Wound drainage
- Intact skin
- Cerebrospinal fluid
- Vomitus
Show the answers and explanation
Answers: B, D and E.
- B – Wound drainage
- D – Cerebrospinal fluid
- E – Vomitus
Topic: scope of standard precautions
Standard precautions apply to blood, all body fluids, secretions and excretions except sweat, non-intact skin and mucous membranes. Wound drainage, cerebrospinal fluid and vomitus all call for appropriate protective equipment. Sweat and intact skin are not the main sources of transmission in standard precautions.
Why the others are wrong
- A – Sweat is the one body fluid excluded from standard precautions.
- C – Intact skin is a protective barrier; standard precautions apply to non-intact skin, not to intact skin.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
17Question
A nurse is about to open a sterile dressing tray and sees a small damp spot on its outer wrapper. The sterilization indicator tape has changed color. What should the nurse do?
- Treat the tray as contaminated and obtain another one
- Use the tray, because the indicator tape shows it was sterilized
- Blot the damp spot dry with sterile gauze and then use it
- Open it and use only the items that are not near the damp spot
Show the answer and explanation
Answer: A. Treat the tray as contaminated and obtain another one
Topic: checking sterile package integrity
A wet or damp wrapper allows organisms to travel through to the contents, so the package is no longer considered sterile. The indicator tape only shows that the package went through sterilization, not that it stayed sterile afterward.
Why the others are wrong
- B – The tape only shows that sterilization occurred; moisture afterward can still contaminate the contents.
- C – Drying the wrapper does not undo the contamination that moisture may already have carried inside.
- D – Organisms can spread through the whole package, and no one can tell which items are safe.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
18Question
A nurse who is 10 weeks pregnant is assigned to an infant with congenital cytomegalovirus infection and asks the charge nurse whether this is safe. Which response is most accurate?
- Reassign the nurse, because pregnant nurses must never care for these infants
- Wear an N95 respirator at all times in the room
- Standard precautions with careful hand hygiene after contact with urine and saliva are sufficient
- Avoid all contact with diapers, and have another nurse handle any body fluids
Show the answer and explanation
Answer: C. Standard precautions with careful hand hygiene after contact with urine and saliva are sufficient
Topic: pregnant staff and cytomegalovirus
Cytomegalovirus spreads through contact with infected urine, saliva and other body fluids. Standard precautions with consistent hand hygiene and gloves for contact with these fluids are effective for all staff, including pregnant nurses. Respirators are not needed because the virus is not airborne.
Why the others are wrong
- A – Care of these infants is not forbidden to pregnant nurses; standard precautions protect all staff.
- B – CMV is not an airborne infection, so a respirator adds no protection.
- D – Avoiding all diaper contact is not required; gloves and hand hygiene control the contact route.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
19Question
A nurse has cleansed a client's forearm with a chlorhexidine-alcohol applicator in preparation for inserting a peripheral intravenous catheter. What should the nurse do next?
- Wipe the area dry with sterile gauze to remove the excess antiseptic before inserting
- Allow the antiseptic to air-dry completely before inserting the catheter
- Blow on the area to speed drying
- Palpate the vein again with a gloved finger to confirm its position
Show the answer and explanation
Answer: B. Allow the antiseptic to air-dry completely before inserting the catheter
Topic: skin antisepsis before peripheral IV insertion
Skin antiseptics need contact time and must dry fully to work. The nurse lets the solution air-dry without wiping, fanning or blowing, and does not touch the cleansed site again before insertion, unless sterile gloves are used.
Why the others are wrong
- A – Wiping removes the antiseptic before it has finished acting.
- C – Blowing on the site spreads organisms from the nurse's breath and does not allow full contact time.
- D – Touching the prepared site with a non-sterile glove recontaminates the skin.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
20Question
A nurse is teaching the family caregiver of a client with a long-term tracheostomy who will go home. Which statement shows the caregiver understands suctioning at home?
- I must use sterile gloves and a new catheter every time
- I do not need to wash my hands if I wear gloves
- I will suction the mouth first and then use the same catheter in the tracheostomy tube
- I will wash my hands and use clean technique with a clean catheter
Show the answer and explanation
Answer: D. I will wash my hands and use clean technique with a clean catheter
Topic: home tracheostomy suctioning technique
In the hospital, sterile technique is used for tracheostomy suctioning. At home, clean technique is acceptable: the caregiver washes the hands, wears clean gloves, and uses a catheter cleaned and stored as taught. The catheter is never moved from the mouth to the tracheostomy, which carries mouth organisms into the airway.
Why the others are wrong
- A – Sterile technique and single use are hospital practice; at home clean technique with a cleaned catheter is accepted.
- B – Gloves do not replace hand washing, which is done before and after suctioning.
- C – A catheter used in the mouth carries oral organisms into the airway; the mouth is suctioned last, with a separate catheter.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
21Question
A parent calls the school nurse because a child has bright red cheeks and a lacy rash on the arms and asks whether the child may attend school. The child was diagnosed with erythema infectiosum (fifth disease). Which response is correct?
- The child is no longer contagious once the rash appears and may attend school
- The child must stay home until the rash has completely faded
- The child needs an antibiotic for 24 hours before returning
- The child must stay home for two weeks after the rash appears to be sure it has gone
Show the answer and explanation
Answer: A. The child is no longer contagious once the rash appears and may attend school
Topic: school return with fifth disease
Fifth disease, caused by parvovirus B19, is most contagious before the rash appears, during the mild fever and cold-like stage. Once the characteristic rash is present the child is generally no longer contagious and can attend school. Antibiotics do not treat a viral illness.
Why the others are wrong
- B – Exclusion until the rash fades is unnecessary because the child is no longer contagious once the rash appears.
- C – Fifth disease is viral, so antibiotics are not used.
- D – No exclusion period of this length is needed, since the infectious stage has passed by the time the rash shows.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
22Question
A client with active pulmonary tuberculosis has just been discharged from an airborne infection isolation room. The charge nurse is instructing an environmental services worker about cleaning the room. Which instruction is correct?
- Enter right away wearing a surgical mask because the client has left
- Enter right away and open the windows to air the room
- Enter right away with gloves and a gown, because tuberculosis spreads by touching surfaces and hands
- Wait for enough air changes, per policy, or wear a fit-tested respirator to enter sooner
Show the answer and explanation
Answer: D. Wait for enough air changes, per policy, or wear a fit-tested respirator to enter sooner
Topic: entering an airborne room after discharge
Tuberculosis particles remain suspended in room air after the client leaves. The room stays closed until the required number of air changes has removed them, as set by facility policy, or the worker wears a fit-tested N95 or higher respirator to enter earlier. A surgical mask does not filter these particles.
Why the others are wrong
- A – A surgical mask does not filter tiny airborne particles that remain after the client leaves.
- B – Opening windows can release contaminated air into other areas, and the worker would still be exposed.
- C – Tuberculosis is airborne, not spread by touch, so gloves and a gown do not protect the worker's lungs.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
23Question
A 5-month-old infant is admitted with fever, a high-pitched cry, poor feeding and a bulging anterior fontanel. Bacterial meningitis is suspected and IV antibiotics are started. Which precautions should the nurse use?
- Airborne precautions in a negative-pressure room until discharge.
- Droplet precautions until 24 hours of effective antibiotic therapy have been given.
- Contact precautions until the cerebrospinal fluid culture is negative.
- Standard precautions only, because the infant is not coughing.
Show the answer and explanation
Answer: B. Droplet precautions until 24 hours of effective antibiotic therapy have been given.
Topic: bacterial meningitis precautions
The bacteria that commonly cause meningitis in infants and children, such as Neisseria meningitidis, spread in large respiratory droplets. Droplet precautions are added to standard precautions and continued until 24 hours after effective antibiotics are started.
Why the others are wrong
- A – Airborne precautions are for organisms carried on small particles, such as tuberculosis, measles and varicella.
- C – Contact precautions do not address droplet spread, and the end point is 24 hours of effective therapy, not a culture result.
- D – Droplets are produced by crying and by procedures as well as by coughing; standard precautions alone are not enough.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
24Question
A nurse on a medical unit finishes taking a client's blood pressure. The nurse's hands are not visibly soiled, so the nurse uses an alcohol-based hand rub (ABHR) instead of washing at the sink. Which advantages support this choice?
Select all that apply.
- It takes less time than a full wash at the sink
- It is usually gentler on the skin with repeated use
- It reliably destroys bacterial spores
- It can be used when the hands are heavily soiled with blood
- It generally lowers the count of organisms on the hands more than plain soap does
Show the answers and explanation
Answers: A, B and E.
- A – It takes less time than a full wash at the sink
- B – It is usually gentler on the skin with repeated use
- E – It generally lowers the count of organisms on the hands more than plain soap does
Topic: advantages of alcohol hand rub
If the hands show no visible soil, an alcohol-based rub is the preferred method in health care. It is quick, it is better tolerated by skin than repeated washing, and it reduces the number of most organisms on the hands more than plain soap and water. It does not remove visible soil and it does not reliably kill spores.
Why the others are wrong
- C – Alcohol does not reliably kill bacterial spores such as those of Clostridioides difficile; soap and water are used for those.
- D – Heavy soiling with blood or other material must be washed off with soap and water; alcohol cannot remove visible soil.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
25Question
A client with a central venous catheter develops a bloodstream infection caused by organisms normally found on the skin. When the nurse maps the chain of infection, which item represents the portal of entry?
- The nurse's unwashed hands during dressing changes
- The bacteria-laden skin on the client's upper chest
- The catheter pathway that carries organisms through the skin into the vein
- The staphylococci growing in the client's blood cultures
Show the answer and explanation
Answer: C. The catheter pathway that carries organisms through the skin into the vein
Topic: chain of infection portal of entry
The portal of entry is the route by which an infectious agent gets into a susceptible host. An invasive device such as a central line bypasses the skin barrier and gives organisms a direct path into the bloodstream.
Why the others are wrong
- A – Contaminated hands are the means of transmission, the link that carries the organism to the host.
- B – Skin colonized with bacteria is the reservoir, where the organism lives before it spreads.
- D – The staphylococci are the infectious agent itself, not the way it gets in.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
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