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
Another nursing assistant says, "I didn't get to take vital signs in Room 12; just write down normal numbers for them." What should the nursing assistant do?
ACopy the numbers from the previous shift
BRefuse, and tell the nurse that the vital signs were not taken
CWrite the numbers but mark them with a question mark
DWrite normal numbers, because the resident was well this morning
3.Nursing math & unit conversionsMedium
Practice exercise (made-up values, not clinical guidance). A patient’s temperature is 104.8 °F. Convert it to degrees Celsius T with °C = (°F − 32) × 5/9. Round to one decimal place.
104.8 °F
T = °C
4.Nursing math & unit conversionsHard
Practice exercise (made-up values, not clinical guidance). A prescription reads 1 tsp of an oral suspension three times a day for 14 days. Using 1 tsp = 5 mL, how many mL V are needed for the whole course?
1 tspthree times a day14 days1 tsp = 5 mL
V = mL
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: B · Refuse, and tell the nurse that the vital signs were not taken
Why this is the answer
Writing values that were not measured is falsifying a record, which is illegal and dangerous. The nursing assistant refuses, makes sure the nurse knows the vital signs are still needed and, if this is a pattern, reports it.
Answer
B · Refuse, and tell the nurse that the vital signs were not taken
3.Nursing math & unit conversions
Answer: T = 40.4 °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
104.8 − 32 = 72.8
Multiply by 5/9
T = 72.8·5/9 = 40.44 ≈ 40.4 °C
Answer
T = 40.4 °C
4.Nursing math & unit conversions
Answer: V = 210 mL
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.
Volume per dose
1 tsp = 1·5 = 5 mL
Whole course
V = 5 mL × 3/day × 14 = 210 mL
Answer
V = 210 mL
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.