| Course | NR 293 Pharmacology for Nursing Practice |
|---|---|
| Week | 3 |
| Paper type | Dosage calculation set |
| Length | About 1,160 words, 3 pages |
| Format | APA 7 student paper |
| School | Chamberlain University |
| Program | BSN (pre-licensure) |
| Updated | October 2026 |
Free sample paper for NR 293 Week 3
Dosage Calculation Set: Six Items From Tablets to a Heparin Drip, Each Laid Out the Same Way and Checked Against Common Sense
Student Name
College of Nursing, Chamberlain University
NR 293: Pharmacology for Nursing Practice
Instructor Name
Month Day, Year
Dosage Calculation Set: Six Items From Tablets to a Heparin Drip, Each Laid Out the Same Way and Checked Against Common Sense
How Each Item Is Laid Out
Every item below uses the same layout: three lines for what is ordered, what is on hand and what is asked for; an equation with the units written in, and any conversion factor shown as a fraction so the canceling units are visible; one rounding step at the end; the result written as an instruction a nurse could carry out; and a reality check. Doses are written with a leading zero before a decimal point and never with a trailing zero after a whole number, following the ISMP list of error-prone dose designations, because ".8 mL" can be read as 8 mL and "1.0 mg" as 10 mg (Institute for Safe Medication Practices [ISMP], 2024a).
Item 1: Tablets With a Unit Conversion
Ordered: levothyroxine 0.075 mg by mouth daily.
On hand: levothyroxine 25 mcg tablets.
Asked for: number of tablets.
Equation: 0.075 mg x (1,000 mcg / 1 mg) = 75 mcg; 75 mcg x (1 tablet / 25 mcg) = 3 tablets.
Result: give 3 tablets.
Reality check: three tablets is within the usual limit of one to three tablets per dose; more than that would prompt a check for a larger-strength tablet or an error in the order.
Item 2: Oral Liquid
Ordered: acetaminophen 650 mg PO q6h PRN for a temperature above 38.5 C.
On hand: acetaminophen liquid 160 mg per 5 mL.
Asked for: volume in mL.
Equation: 650 mg x (5 mL / 160 mg) = 20.3125 mL.
Result: give 20.3 mL, measured in an oral syringe.
Reality check: 650 mg is about four times 160 mg, so about four times 5 mL, or 20 mL. The answer agrees. A 20-mL dose is large for a liquid; if the patient can swallow tablets, two 325-mg tablets would be easier.
Item 3: Weight-Based Injection
Ordered: enoxaparin 1 mg/kg subcut q12h for a leg clot; today's weight 176 lb.
On hand: enoxaparin 80 mg per 0.8 mL prefilled syringe.
Asked for: dose in mg, then volume.
Equation, step one, weight: 176 lb x (1 kg / 2.2 lb) = 80 kg.
Equation, step two, dose: 80 kg x (1 mg / 1 kg) = 80 mg.
Equation, step three, volume: 80 mg x (0.8 mL / 80 mg) = 0.8 mL.
Result: give the full 0.8 mL syringe, 80 mg, subcutaneously.
Reality check: a full prefilled syringe matching a calculated dose is reassuring. Enoxaparin is an anticoagulant, a class on the ISMP list of high-alert medications in acute care (Institute for Safe Medication Practices, 2024b), so the calculation is independently checked by a second nurse before giving.
Item 4: Infusion Rate by Pump
Ordered: 0.9% sodium chloride 1,000 mL IV to run over 10 hours.
On hand: 1,000 mL bag; infusion pump.
Asked for: rate in mL/hour.
Equation: 1,000 mL / 10 h = 100 mL/h.
Result: set the pump at 100 mL/h.
Reality check: 100 mL an hour is within the usual range for adult maintenance fluid; a result of 10 or 1,000 would signal a slipped decimal.
Item 5: Weight-Based Continuous Infusion
Ordered: heparin infusion at 18 units/kg/hour; patient weighs 92 kg.
On hand: heparin 25,000 units in 500 mL.
Asked for: rate in mL/hour.
Equation, step one, concentration: 25,000 units / 500 mL = 50 units/mL.
Equation, step two, dose: 92 kg x 18 units/kg/h = 1,656 units/h.
Equation, step three, rate: 1,656 units/h x (1 mL / 50 units) = 33.12 mL/h.
Result: set the pump at 33.1 mL/h, or 33 mL/h if the pump accepts whole numbers only, per unit policy.
Reality check: a rate in the 30s for an adult on a standard heparin bag is typical. Heparin is also a high-alert medication, and the rate, concentration and weight are verified independently by a second nurse at the pump.
Item 6: Gravity Drip
Ordered: lactated Ringer's 500 mL intravenously over 4 hours.
On hand: tubing with a drop factor of 15 drops/mL; no pump available.
Asked for: drops per minute.
Equation: 500 mL / 240 min x 15 drops/mL = 31.25 drops/min.
Result: regulate to 31 drops per minute, counted for a full minute.
Reality check: 500 mL over 4 hours is 125 mL/h, and with a 15-drop set, dividing mL/h by 4 gives about 31. The two methods agree.
One Rounding Step, at the End
In every item, the arithmetic is carried at full precision and rounded once, at the end. Rounding the weight in Item 3 or the concentration in Item 5 before the final step would carry a small error into the next step and could change the answer. The final rounding follows what the device can deliver: tenths of a milliliter for an oral syringe or a pump that accepts decimals, a whole drop for a gravity set, whole tablets for tablets.
Where the Reality Check Earns Its Place
Students often leave out the reality check, yet only that line catches the errors a correct-looking equation cannot. Each check in this set works in one of three ways. Some estimate the answer before trusting it: in Item 2, 650 mg is roughly four times 160 mg, so the answer should be roughly four times 5 mL, and it is. Some compare the answer with what is usual: in Item 4, a rate of 100 mL an hour is ordinary for an adult, while 10 or 1,000 would be implausible. And some compare the answer with the product: in Item 3, the calculated volume matches a full prefilled syringe, which is what the manufacturer supplies for that dose.
An answer that fails a reality check is not necessarily wrong, but it is a reason to stop and recheck the order, the product and the arithmetic before going further. A dose of seven tablets, a rate of 330 mL an hour for heparin, or a volume of 8 mL of a drug that normally comes as 0.8 mL are all answers a calculator would produce without complaint from a single misplaced decimal. The nurse is the check the calculator does not have.
Two items in this set involve high-alert drugs, and for those, the reality check is followed by an independent double check: a second nurse repeats the calculation from the order and the product without seeing the first answer. The value of an independent check is that the second nurse does not simply agree with the first; if both arrive at 33.1 mL an hour separately, the answer is far more likely to be right than if one reads the other's work and nods.
References
Institute for Safe Medication Practices. (2024a). ISMP list of error-prone abbreviations, symbols, and dose designations. https://www.ismp.org/recommendations/error-prone-abbreviations-list
Institute for Safe Medication Practices. (2024b). ISMP list of high-alert medications in acute care settings. https://www.ismp.org/recommendations/high-alert-medications-acute-list
NR 293 Week 3 instructions, in plain terms
For Week 3 you complete a set of dosage calculation problems and show your work. Expect the instructions to specify the types of problems, such as oral tablets and liquids, injections, weight-based doses, infusion rates and drip rates, and a method such as dimensional analysis or ratio and proportion. Points usually depend on the setup and units, not only the final number. Conversions should be written out, not done mentally. Round once, at the end, according to the rules your section gives. A reality check against the equipment and usual doses catches errors a correct-looking equation can hide. Follow safe notation rules: no trailing zeros and always a leading zero.
How the NR 293 Week 3 example is put together
The paper first explains the layout every item uses. Item 1 converts 0.075 mg of levothyroxine into 75 mcg and three 25 mcg tablets. Item 2 calculates 20.3 mL of acetaminophen liquid and checks it by estimation. Item 3 converts 176 pounds to 80 kilograms on its own line before calculating 80 mg of enoxaparin, then notes the high-alert status from ISMP (2024b). Item 4 sets a pump at 100 mL per hour. Item 5 works a heparin drip in three steps to 33.1 mL per hour with a second-nurse check. Item 6 calculates 31 drops a minute two ways. Closing sections explain single rounding and why reality checks earn their place.
NR 293 Week 3 rubric: what full points look like
Dosage calculation rubrics typically award most points for the correct setup with units, then accurate conversions, correct rounding, the final answer with units and safe notation. Setup is where many marks sit, so every item shows its units canceling inside the equation. Conversions shown on their own line, like pounds to kilograms, protect the most common error point. Rounding once at the end follows standard rules and is graded on its own. Reality checks show safety thinking that some sections score directly. Following ISMP notation guidance avoids tenfold errors that graders watch for. High-alert drugs flagged for an independent double check show awareness that goes beyond arithmetic. Clear labels for each item make partial credit possible when one step slips.
NR 293 Week 3 help from the desk
A bare result with no working loses most of an item, because the route is what is graded. Rounding early compounds errors through every line. Dropping a unit midway, doing conversions in your head and leaving weight in pounds when the order is per kilogram all cost points. Trailing zeros and missing leading zeros are transcription hazards that have caused real tenfold errors. Results nobody checked against the equipment can be impossible to give. Handwritten work may be accepted if your section allows photographs. Either method is fine if applied consistently. Send your problem set with your section's rounding rules, and worked solutions can be laid out the same way.
Get a NR 293 Week 3 example written to your instructions
Send your practice set or the prompt, plus whatever rounding and labeling rules your classroom publishes, and we will return a fully worked version inside 24-48h, first one free. Say whether your section wants dimensional analysis or ratio and proportion and the working comes back in that form, since the two produce identical numbers by visibly different routes.
More NR 293 papers and pre-licensure samples
- NR 293 Week 1: Nurse's Medication Responsibility Post
- NR 293 Week 2: Spironolactone Drug Card
- NR 293 Week 4: Medication Safety Analysis
- NR 293 Week 5: Drug Class Write-up
- NR 293 Week 6: Patient Case Response
- NR 293 Week 7: Patient Teaching Script
- NR 293 Week 8: Medication Care Plan
- NR 302 Week 3: Skin Assessment Write-up
- NR 283 Week 3: Chronic Kidney Disease Case Study
- NR 304 Week 3: Abnormal Findings Report
- NR 228 Week 3: Eight Nutrient Report
NR 293 Week 3 questions, answered
Can the set be handwritten and photographed?
Many sections allow it and some prefer it, since working is easier to lay out by hand than in a document. Where it is allowed, legibility becomes part of the grade: label each item, keep one item per block, and photograph straight on. Check the published instructions before you commit, because sections that require a typed submission usually say so in the assignment text.
Dimensional analysis or ratio and proportion?
Both arrive at the same figure, and classrooms differ on which they teach and accept. Dimensional analysis shows units canceling, which suits weight based and infusion items; ratio and proportion is quicker on simple tablet questions. Use whichever your section teaches and use it consistently across the set, because switching method halfway through makes the working harder to follow than either method alone.
How exact does rounding have to be?
Exact enough to match a device. Rounding rules in this work are not arbitrary conventions; they exist because a syringe is marked in particular increments and a pump accepts particular values. State the rule you applied, apply it once at the end, and keep the unrounded figure visible in the line above so a grader can see the result you actually derived.
Where can I find a free NR 293 Week 3 sample paper?
The full Week 3 set of six worked dosage problems, from levothyroxine tablets to the heparin drip, each with its reality check, is shown on this page.
What heparin rate does the NR 293 Week 3 set calculate?
For 18 units per kilogram per hour in a 92-kilogram patient with 25,000 units in 500 mL, the rate works out to 33.1 mL per hour, verified by a second nurse at the pump.