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
What is a trochanter roll used for?
ATo help the resident sit up straight in a wheelchair all day
BTo raise the resident's head and shoulders during meals in bed
CTo keep the hip and leg from rolling outward when lying on the back
DTo keep the resident's heels pressed firmly on the mattress
2.Nursing assistant (CNA) knowledgeHard
A nursing assistant finds a pill on the floor of a resident's room. What should the nursing assistant do?
AGive it to the resident with a glass of water
BPut it in the resident's drawer for later
CGive it to the nurse and say where it was found
DThrow it in the trash can
3.Nursing math & unit conversionsMedium
Practice exercise (made-up values, not clinical guidance). A patient’s temperature is 99.6 °F. Convert it to degrees Celsius T with °C = (°F − 32) × 5/9. Round to one decimal place.
99.6 °F
T = °C
4.Nursing math & unit conversionsHard
Practice exercise (made-up values, not clinical guidance). An order reads 1 mcg/kg/min for a patient who weighs 96 kg. Express the dose rate D in mg/h. Round to two decimal places.
1 mcg/kg/min96 kg
D = mg/h
3Solutions
1.Nursing assistant (CNA) knowledge
Answer: C · To keep the hip and leg from rolling outward when lying on the back
Why this is the answer
A trochanter roll is a rolled towel or blanket placed along the outside of the thigh. It keeps the hip from rotating outward when the resident lies on the back.
Answer
C · To keep the hip and leg from rolling outward when lying on the back
2.Nursing assistant (CNA) knowledge
Answer: C · Give it to the nurse and say where it was found
Why this is the answer
A pill on the floor may mean a dose was missed or dropped. The nurse needs to know in order to check which medicine it is and what to do. Nursing assistants do not give or throw away medicines.
Answer
C · Give it to the nurse and say where it was found
3.Nursing math & unit conversions
Answer: T = 37.6 °C
Temperature: °C = (°F − 32) × 5/9 and °F = °C × 9/5 + 32. Subtract 32 before you multiply when going from °F, and add 32 after you multiply when going from °C. A quick check: 37 °C is 98.6 °F, and every 1 °C is 1.8 °F.
Subtract 32
99.6 − 32 = 67.6
Multiply by 5/9
T = 67.6·5/9 = 37.56 ≈ 37.6 °C
Answer
T = 37.6 °C
4.Nursing math & unit conversions
Answer: D = 5.76 mg/h
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.
Set up the chain
D = 1 mcg/kg/min × 96 kg × (60 min/1 h) × (1 mg/1000 mcg)
Calculate
D = 1·96·60/1000 = 5.76 mg/h
Answer
D = 5.76 mg/h
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.