Nokea
"Dose desired / dose on hand = dose administered" is the formula for calculating the dose to be administered. Under under which of the following circumstances is this to be used?
- A. When the physician is not available to calculate the dosage
- B. When the dosage is written in the apothecary system
- C. When the dose desired and dose on hand are in the same system
- D. When the label of the drug is in the metric system
Correct Answer: C
Rationale: When the dose ordered by the physician (dose desire is written in the same system as the dose on the drug container (dose on han, the above formula is used for calculating the dose to be administered. When the physician is not available to calculate the dosage, the dosage is written in the apothecary system, and the label of the drug is in the metric system are circumstances in which it becomes necessary for the nurse to compute the drug dosage.
You may also like to solve these questions
The physician writes an order for a client to receive 1 mg of vitamin B12 once every month. Vitamin B12 comes in a 1000 mcg/mL vial. The nurse would administer ?... to the client each month.
- A. 0.5 mL
- B. 1.0 mL
- C. 1.5 mL
- D. 2.0 mL
Correct Answer: B
Rationale: First, the nurse needs to convert the milligrams to micrograms. Therefore, 1 mg = 1000 mcg. Since there is 1000 mcg/mL, the nurse would give 1 mL.
When assessing a client's temperature, the nurse finds it to be 99°C. The client's temperature is degrees Celsius.
- A. 36.0°C
- B. 37.2°C
- C. 38.4°C
- D. 39.6°C
Correct Answer: B
Rationale: To convert Fahrenheit to Celsius, the formula C = 5/9 ? (F - 32) is used. Therefore, 99 - 32 = 67, and 67 ? 5/9 = 37.2.
A group of nursing students are reviewing the various systems of measurement. The students demonstrate understanding of the information when they identify which of the following as a metric system unit? Select all that apply.
- A. Inch
- B. Milligram
- C. Centimeter
- D. Ounce
- E. Pound
Correct Answer: B,C
Rationale: The metric system uses the gram, liter, and meter. Milligram and centimeter are metric units.
A group of nursing students are reviewing information about drugs and how they are supplied for parenteral administration. The students demonstrate understanding of the information when they identify which forms as available for parenteral administration? Select all that apply.
- A. Disposable syringes
- B. Reusable cartridges
- C. Ampules containing liquid form of the drug
- D. Reusable vial containing liquid form of the drug
- E. Vial containing drug powder
Correct Answer: A,C,D,E
Rationale: Parenteral drugs may be available in the following forms: liquids in disposable cartridges or disposable syringes; ampules or vials that contain the liquid form of the drug; and ampules or vials that contain the powder or crystal form of the drug. These vials may be single-dose or multidose vials.
The nurse is checking the dosage of a drug ordered in mg/ kg. A client weighs 275lb. The client weighs kilograms.
- A. 100 kg
- B. 125 kg
- C. 150 kg
- D. 175 kg
Correct Answer: B
Rationale: Pounds must be converted to kilograms using the conversion factor of 2.2 lb in 1 kg. Therefore, 275 / 2.2 = 125.