In the print window, choose “Save as PDF” to keep a copy on your device.
1Formulas and methods
Nursing assistant (CNA) knowledge
Method
Check whether the resident is in danger right now (not breathing, choking, a fall, chest pain, stroke signs); if so, keep them safe and get the nurse at once.
Ask whether the task is within the nursing assistant’s scope and training; if not, decline politely and tell the nurse.
Respect the resident’s rights: privacy, choice, refusal of care, dignity and freedom from abuse and unneeded restraints.
Apply the basic rules: hand hygiene, body mechanics, bed low and call light within reach, weak side first when dressing.
Observe and report: compare with the resident’s usual state and report changes promptly and objectively.
Nursing math & unit conversions
Metric steps
1 kg = 1000 g, 1 g = 1000 mg, 1 mg = 1000 mcg, 1 L = 1000 mL
Weight and length
1 kg = 2.2 lb, 1 lb = 16 oz, 1 in = 2.54 cm, 1 ft = 12 in
Household measures
1 tsp = 5 mL, 1 tbsp = 15 mL, 1 fl oz = 30 mL, 1 cup = 8 fl oz = 240 mL
Write the given quantity with its unit and the unit you want.
Pick the equivalent: 1000 between kg, g, mg and mcg or L and mL; 1 kg = 2.2 lb; 1 tsp = 5 mL, 1 tbsp = 15 mL, 1 fl oz = 30 mL, 1 cup = 240 mL.
Write it as a fraction so that the unwanted unit cancels; for a rate, use one fraction per unit that changes.
Check the direction: a smaller unit gives a bigger number.
Round only the final answer, to the precision the question names.
2Practice problems
1.Nursing assistant (CNA) knowledgeMedium
A resident uses an artificial leg (prosthesis). Which is part of the nursing assistant's care?
ALeaving the prosthesis on day and night
BAdjusting the fit of the prosthesis with tools when it feels loose
CDeciding when the resident no longer needs the prosthesis
DChecking the skin of the residual limb and reporting sores
2.Nursing assistant (CNA) knowledgeHard
In a crowded elevator, two nursing assistants discuss a resident's diagnosis by name. What is the problem?
ANothing, because no paper records were shown
BNothing, because they are both on the care team
CThey are breaking confidentiality where others can hear
DThey should have used the resident's room number instead
3.Nursing math & unit conversionsMedium
Practice exercise (made-up values, not clinical guidance). A patient is 6 ft 0 in tall. Using 1 ft = 12 in and 1 in = 2.54 cm, find the height h in centimetres, to the nearest whole centimetre.
6 ft 0 in1 ft = 12 in1 in = 2.54 cm
h = cm
4.Nursing math & unit conversionsHard
Practice exercise (made-up values, not clinical guidance). A serum creatinine result is 128 µmol/L. Using 1 mg/dL = 88.4 µmol/L for creatinine, find c in mg/dL. Round to two decimal places.
128 µmol/L1 mg/dL = 88.4 µmol/L
c = mg/dL
3Solutions
1.Nursing assistant (CNA) knowledge
Answer: D · Checking the skin of the residual limb and reporting sores
Why this is the answer
The skin of the residual limb is kept clean and dry and is checked for redness, blisters or sores, which are reported. Fitting and adjusting the prosthesis is done by specialists.
Answer
D · Checking the skin of the residual limb and reporting sores
2.Nursing assistant (CNA) knowledge
Answer: C · They are breaking confidentiality where others can hear
Why this is the answer
Resident information is discussed only with team members who need it, in private places. Talking in public areas such as elevators, hallways or cafeterias can let visitors hear private information.
Answer
C · They are breaking confidentiality where others can hear
3.Nursing math & unit conversions
Answer: h = 183 cm
Household measures and weight: nursing exams use rounded equivalents: 1 teaspoon (tsp) = 5 mL, 1 tablespoon (tbsp) = 15 mL = 3 tsp, 1 fluid ounce (fl oz) = 30 mL = 2 tbsp, and 1 cup = 8 fl oz = 240 mL. For weight, 1 kg = 2.2 lb and 1 lb = 16 oz; for length, 1 inch = 2.54 cm. Set the conversion up so that the unit you do not want cancels out.
Height in inches
6·12 + 0 = 72 in
Inches to centimetres
h = 72·2.54 = 182.9 ≈ 183 cm
Answer
h = 183 cm
4.Nursing math & unit conversions
Answer: c = 1.45 mg/dL
Dimensional analysis: write the given quantity, then multiply by conversion factors written as fractions (for example 60 min/1 h or 1 mg/1000 mcg) so that each unwanted unit appears once on top and once underneath and cancels. When only the wanted unit is left, calculate. Use the equivalents the question gives and round only the final answer.
Convert
c = 128/88.4 = 1.448 ≈ 1.45 mg/dL
Answer
c = 1.45 mg/dL
This is independent practice material. ExamProblems is not affiliated with or endorsed by the organisation that runs this exam, and the exam name is used only to describe the content.