The physician orders nitroglycerin tablets gr 1/150 sublingual every 5 minutes up to three tablets for chest pain. The medication is supplied in 0.4-mg tablets. The patient took three tablets. How many milligrams did she receive? Round to the nearest tenth.
0.8 mg
1.2 mg
1.6 mg
2.0 mg
The Correct Answer is B
Choice A reason: 0.8 mg assumes two 0.4-mg tablets, but the patient took three. Nitroglycerin gr 1/150 equals 0.4 mg per tablet, so three tablets total 1.2 mg, making 0.8 mg incorrect.
Choice B reason: Nitroglycerin gr 1/150 is 0.4 mg per tablet. Three tablets (0.4 mg × 3 = 1.2 mg) were taken, matching the order. Rounded to the nearest tenth, 1.2 mg is correct.
Choice C reason: 1.6 mg assumes four 0.4-mg tablets or a miscalculation. The patient took three tablets (1.2 mg total), making 1.6 mg incorrect for the administered dose.
Choice D reason: 2.0 mg significantly overestimates the dose. Three 0.4-mg tablets total 1.2 mg, not 2.0 mg, making this incorrect based on the supplied medication strength.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: A 3-inch needle is too long for most IM injections; 1–1.5 inches is standard for adults. This risks hitting bone or tissue, making this incorrect for safe injection.
Choice B reason: IM injections require a 90-degree angle to reach muscle. A 45-degree angle is for subcutaneous injections, making this incorrect for intramuscular administration technique.
Choice C reason: Aspirating before injecting ensures the needle is not in a blood vessel, preventing intravenous administration. This safety step is standard for IM injections, making it correct.
Choice D reason: Massaging the site can cause medication leakage or tissue damage. Gentle pressure is preferred, making massage incorrect for post-injection care in IM administration.
Correct Answer is B
Explanation
Choice A reason: 2 mL provides 2 mg (5 mg/5 mL = 1 mg/mL, so 2 mL = 2 mg), which is half the ordered 4 mg. This underdoses the patient, making it incorrect for the prescribed dosage.
Choice B reason: Diazepam 5 mg/5 mL means 1 mg/mL. For 4 mg, 4 mL is needed (4 mg ÷ 1 mg/mL = 4 mL). This delivers the correct dose, making 4 mL the correct answer.
Choice C reason: 5 mL delivers 5 mg (5 mg/5 mL), exceeding the ordered 4 mg. This overdoses the patient, risking sedation, making 5 mL incorrect for the prescribed dosage.
Choice D reason: 6 mL delivers 6 mg, significantly exceeding the 4 mg order. This overdose increases side effects like respiratory depression, making 6 mL incorrect for the correct dosage.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.