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 A
Explanation
Choice A reason: Decreased skin elasticity is an expected finding in an 84-year-old, as aging reduces collagen and elastin, causing thinner, less resilient skin. This physiological change increases wrinkling and fragility, making it a common and anticipated sign in elderly patients.
Choice B reason: Increased muscle strength is not expected in an 84-year-old, as aging leads to sarcopenia, reducing muscle mass and strength. This causes weakness and mobility issues, making this an incorrect finding for an elderly patient’s typical presentation.
Choice C reason: Enhanced night vision is not typical in aging; older adults often experience reduced night vision due to retinal changes and slower pupil adaptation. This makes night vision an incorrect expected finding for an 84-year-old patient.
Choice D reason: Improved short-term memory is not expected, as aging often impairs short-term memory due to neuronal loss and slower cognitive processing. Memory decline is common in the elderly, making this an incorrect finding for an 84-year-old.
Correct Answer is A
Explanation
Choice A reason: Limiting fluid and caffeine intake before bed is the most effective way to reduce nocturia, as it decreases bladder volume and irritation overnight. Caffeine is a bladder stimulant, and reduced fluids minimize urine production, directly addressing the patient’s frequent urination.
Choice B reason: Practicing Kegel exercises strengthens pelvic floor muscles, aiding stress incontinence, but nocturia is more related to bladder overactivity or volume. Limiting fluids and caffeine more directly reduces nighttime urination frequency, making this less effective.
Choice C reason: Leaving the bathroom light on improves safety but does not address the cause of nocturia. Reducing fluid and caffeine intake directly decreases urination frequency, while lighting is a secondary safety measure, making this less appropriate.
Choice D reason: Clearing the path to the bathroom enhances safety but does not reduce nocturia’s frequency. Limiting fluid and caffeine intake before bed more effectively minimizes nighttime urination, making environmental adjustments a secondary consideration for this issue.
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