NHS Healthcare Assistant

Clinical Knowledge

30 free practice questions with explanations

PassNova has 30 free NHS Healthcare Assistant practice questions on Clinical Knowledge, each with a clear explanation. Practise them in the browser with instant feedback — 100% free, no sign-up, on any device. Updated for 2026.

Sample questions

Clinical Knowledge: example questions & answers

30 worked examples with answers and explanations below. Practise them in the browser with instant feedback on every answer.

  1. What are the 5 moments of hand hygiene according to WHO guidelines?

    • AAt the start of the shift, mid-shift, at the end of the shift, before meals and after using the toilet
    • BOnly before surgical procedures, before drawing up intravenous medicines, and before entering theatre
    • CBefore patient contact, before aseptic procedure, after blood/body fluid exposure, after patient contact, after touching patient surroundings
    • DOnly after handling specimens, after emptying a catheter bag, and after taking off used gloves

    Answer: WHO's 5 moments are: 1) Before patient contact, 2) Before aseptic procedures, 3) After exposure to body fluid, 4) After patient contact, 5) After touching patient surroundings. These moments are critical infection control.

  2. What does PPE stand for and what does it include?

    • APatient Protection Equipment - screens, curtains, bed rails and call bells
    • BProcedural Preventive Equipment - sharps bins, trolleys and drapes
    • CPersonal Patient Education - leaflets, posters and videos
    • DPersonal Protective Equipment - gloves, aprons, masks, eye protection

    Answer: PPE = Personal Protective Equipment. Proper use protects both staff and patients from infection and injury transmission.

  3. What is the correct order for removing contaminated PPE (doffing)?

    • AMask, gloves, apron, eye protection
    • BEye protection, apron, gloves, mask
    • CGloves, apron, mask, eye protection
    • DApron, gloves, eye protection, mask

    Answer: Correct doffing sequence: 1) Apron, 2) Gloves, 3) Eye protection, 4) Mask. This sequence minimises contamination exposure.

  4. What are the four vital signs that should be monitored?

    • ATemperature, glucose, respiration, weight
    • BPulse, oxygen saturation, weight, temperature
    • CTemperature, pulse, respiration, blood pressure
    • DBlood pressure, temperature, weight, urine output

    Answer: The four vital signs (TPR + BP) are Temperature, Pulse, Respiration, and Blood Pressure. These indicate basic physiological stability.

  5. What is a normal adult resting heart rate?

    • A120-140 bpm
    • B60-100 bpm
    • C40-60 bpm
    • D100-120 bpm

    Answer: Normal adult resting heart rate is 60-100 beats per minute. Values outside this may indicate cardiac issues or fitness levels.

  6. What is normal blood pressure for an adult?

    • A140/90 mmHg
    • B100/60 mmHg
    • C160/100 mmHg
    • D120/80 mmHg

    Answer: Normal adult BP is approximately 120/80 mmHg (systolic/diastolic). Values above 140/90 suggest hypertension.

  7. What is a normal respiratory rate for an adult at rest?

    • A40-50 breaths per minute
    • B12-20 breaths per minute
    • C5-10 breaths per minute
    • D25-35 breaths per minute

    Answer: Normal adult respiratory rate is 12-20 breaths per minute. Rates above 20 (tachypnea) may indicate respiratory or systemic issues.

  8. What is the normal body temperature for an adult?

    • A40.5-41.5°C
    • B38.5-39.5°C
    • C36.5-37.5°C
    • D35.5-36.5°C

    Answer: Normal adult temperature is 36.5-37.5°C. Fever is generally defined as >38°C and hypothermia as <36°C.

  9. What is the main purpose of hand hygiene in healthcare?

    • AMeeting the employee dress code set out in the trust uniform policy
    • BBreak the chain of infection by removing microorganisms
    • CKeeping staff hands comfortable during a long clinical shift
    • DImproving the cosmetic appearance of the hands so patients feel confident

    Answer: Hand hygiene prevents the transmission of harmful microorganisms to patients, other staff, and the environment. It's the single most important infection control measure.

  10. What is the recommended duration for hand washing?

    • A10 seconds
    • B5 seconds
    • C20 seconds
    • D40 seconds

    Answer: WHO recommends at least 20 seconds of hand washing with soap and water to ensure effective removal of microorganisms.

  11. When should hand sanitiser be used instead of hand washing?

    • AAlways, because it is quicker than washing at a sink
    • BWhen hands are visibly clean - it's effective for most situations
    • COnly when there is no soap and water within reach
    • DNever, because soap and water is always the safer choice

    Answer: Alcohol-based hand sanitiser is effective when hands aren't visibly soiled, but soap and water is better for contaminated hands or C. difficile spores.

  12. What does 'moving and handling' training teach healthcare workers?

    • ASafe techniques to move and position patients to prevent injury to both staff and patients
    • BGeneral manual labour skills of the kind that are useful in portering work
    • CHow to operate heavy machinery and lifting plant on a hospital site
    • DHow to lift the heaviest possible load without needing any equipment at all

    Answer: Manual handling training teaches safe patient moving techniques using proper body mechanics and equipment like hoists to prevent musculoskeletal injury.

  13. What is 'pressure area care' designed to prevent?

    • AMalnutrition caused by missed mealtimes
    • BPressure injuries (bedsores) from prolonged immobility
    • CAnxiety about being in hospital
    • DInfection of a surgical wound

    Answer: Pressure area care involves regular repositioning, skin checks, and use of pressure-relieving equipment to prevent pressure ulcers in immobile patients.

  14. What is a key principle of safe moving and handling?

    • AMove patients quickly to minimise their discomfort
    • BUse mechanical aids when available and get help from colleagues
    • CAvoid using equipment - manual handling builds strength
    • DAlways move patients on your own so that the ward round is not delayed

    Answer: Safe handling requires teamwork, use of mechanical aids, proper technique, and communication - all to protect both patient and staff wellbeing.

  15. What does infection control aim to achieve in healthcare?

    • AEliminate every microorganism from the ward environment and from patients' skin
    • BPrevent and reduce the transmission of infections in the healthcare setting
    • CProtect healthcare workers alone, since patients are covered by their own immunity
    • DReduce patient anxiety about being in hospital by keeping the ward looking clean and tidy

    Answer: Infection control measures aim to prevent healthcare-associated infections (HCAIs) by breaking chains of infection and protecting patients and staff.

  16. What are the key stages of wound care?

    • ALeaving the wound open to the air so that a scab can form quickly
    • BApplying ointment and covering with a dressing, without cleaning first
    • CCleaning with water only and applying the dressing while the skin is still wet
    • DCleaning, drying, applying dressing, reviewing

    Answer: Proper wound care includes: assessment, cleaning (with appropriate solution), drying, applying suitable dressing, and regular review for healing.

  17. What is the importance of accurate patient records in healthcare?

    • AEnsuring continuity of care, supporting clinical decisions, and maintaining accountability
    • BKeeping the ward management team happy at the monthly audit meeting
    • CMeeting legal and regulatory requirements only, with no bearing on the day-to-day clinical care
    • DRecords have no particular importance beyond the initial admission

    Answer: Accurate records ensure safe, coordinated care; support clinical decisions; provide legal protection; and enable quality monitoring.

  18. What are the main sources of nutrition in the human body?

    • AOnly vitamins and minerals
    • BOnly protein and fat
    • COnly carbohydrates
    • DCarbohydrates, proteins, fats, vitamins, minerals, water

    Answer: The body requires balanced nutrition: macronutrients (carbs, protein, fat) and micronutrients (vitamins, minerals) plus water for optimal health.

  19. What is oxygen saturation (SpO2) and what is normal?

    • AThe percentage of red blood cells; normal is 50-70%
    • BThe amount of oxygen in lungs; normal is 80-90%
    • CThe speed of oxygen transport; normal is 20-30 ml/min
    • DThe percentage of haemoglobin carrying oxygen; normal is 95-100%

    Answer: SpO2 measures the percentage of oxygenated haemoglobin. Normal is ≥95% for healthy adults. Values <90% suggest hypoxemia.

  20. What is the chain of infection and why is it important?

    • AA treatment method used to clear up an established infection quickly
    • BA type of bacterial infection that spreads quickly from bed to bed on a ward
    • CA support network linking patients who are recovering from infection
    • DA disease spreading process involving pathogen, mode of transmission, and susceptible host

    Answer: Understanding the chain of infection (agent → reservoir → portal of exit → transmission → portal of entry → host) helps identify where to break transmission.

  21. What are the three types of transmission that must be controlled in infection prevention?

    • AAirborne, waterborne, foodborne
    • BDirect, indirect, environmental
    • CFast, slow, latent transmission
    • DContact, droplet, airborne

    Answer: Contact transmission (touching), droplet transmission (coughing/sneezing), and airborne transmission (small particles) require different control measures.

  22. What is the purpose of standard precautions in healthcare?

    • AProtect healthcare workers from blood-borne viruses, with patient safety covered separately
    • BProtect only patients
    • CTreat all body fluids as potentially infectious and protect both staff and patients
    • DPrevent bacterial infections only, since viruses are managed through isolation nursing

    Answer: Standard precautions assume all blood and body fluids may be infectious, regardless of diagnosis, protecting everyone through consistent practices.

  23. What does the 'SSKIN' bundle stand for in pressure ulcer prevention?

    • ASurface, Skin inspection, Keep moving, Incontinence and moisture, Nutrition and hydration
    • BSize, Colour, Area, Rupture, Nursing plan
    • CSkin, Sensation, Kinetics, Infection, Nutrition
    • DSupport surface, Skin care, Kit, Individual needs, Notes

    Answer: SSKIN is the five-step bundle used across the NHS to prevent pressure ulcers: choose the right SURFACE, inspect the SKIN regularly, KEEP the person MOVING, manage INCONTINENCE and moisture, and support NUTRITION and hydration.

  24. What does ABCDE assess in a skin lesion examination?

    • AArea, Blotching, Coverage, Damage, Extent of spreading
    • BAge, Background, Condition, Duration, Aetiology
    • CAcute, Burning, Chronic, Deep, External appearance
    • DAsymmetry, Border, Colour, Diameter, Evolving

    Answer: The ABCDE checklist for a suspicious mole is Asymmetry, Border, Colour, Diameter and EVOLVING — whether it is changing in size, shape or colour over time. Some older US material writes E as Elevation; UK guidance uses evolving.

  25. What is the RICE protocol used for?

    • ARadiological imaging of a fractured limb
    • BNutrition support planning for underweight patients
    • CRest, Ice, Compression, Elevation - for acute musculoskeletal injuries
    • DRespiratory care following a chest infection

    Answer: RICE is first aid for sprains/strains: Rest (immobilise), Ice (reduce swelling), Compression (with bandage), Elevation (reduce swelling).

  26. What does the Glasgow Coma Scale assess?

    • ASeverity of depression using a mood questionnaire
    • BLevel of anxiety before an operation
    • CNeurological status - eye opening, verbal response, motor response
    • DIntensity of pain on a numerical scale

    Answer: GCS scores 3-15, assessing consciousness level: eye opening (1-4), verbal response (1-5), motor response (1-6). Lower scores = more severe impairment.

  27. What is the significance of 'NEWS' in patient deterioration recognition?

    • ANeurological Early Signs - a bedside checklist used for spotting stroke symptoms on a ward
    • BNursing Escalation Warning Sheet - a local handover tool used between wards at night
    • CNew Early Warning System - a single score that is used only within intensive care units
    • DNational Early Warning Score - predicts deterioration risk and guides escalation

    Answer: NEWS tracks vital signs (temp, HR, RR, BP, SpO2, AVPU, urine output) with a scoring system. Higher scores indicate greater deterioration risk.

  28. What does the AVPU scale assess?

    • AAirway, Ventilation, Perfusion, Urine output - a rapid check of the circulation
    • BAge, Vision, Peripheral pulses, Urine output - a frailty check
    • CAlert, Verbal response, Pain response, Unresponsive - level of consciousness
    • DAppetite, Vital signs, Pain, Urine output - a daily nutrition check

    Answer: AVPU rapidly assesses consciousness: Alert (normal), Verbal (responds to voice), Pain (responds to pain), Unresponsive. Simpler than GCS for quick checks.

  29. What is the purpose of the 'Waterlow Scale'?

    • AAssess pressure ulcer risk and guide preventive interventions
    • BAssessment of a patient's daily water intake and fluid balance chart
    • CMeasurement of the volume of drainage coming from a surgical wound
    • DMonitoring of a patient's weight each week

    Answer: Waterlow Scale identifies pressure injury risk based on factors like age, mobility, nutrition, incontinence, helping target prevention strategies.

  30. What does the Braden Scale measure?

    • ADepression and anxiety, using six subscales covering mood, sleep and appetite
    • BNutritional status alone, scored from weight, appetite and recent blood test results
    • CPain intensity at rest and on movement, scored out of ten
    • DPressure injury risk using 6 subscales: sensory perception, moisture, activity, mobility, nutrition, friction/shear

    Answer: Braden Scale is an evidence-based tool identifying pressure injury risk, guiding preventive measures for vulnerable patients.

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