For problems involving adult patients, the answer will be rounded to the nearest tenth. Although some IV pumps do not allow calibration to the tenth or hundredth, for the purpose of this exam, IV rate calculations will be rounded to the nearest whole drop (gt/min) or to the nearest whole number IV (ml/hr). To promote safety, a zero must be placed to the left of the decimal point in answers that are less than one. No zero is allowed to the right of the decimal point in answers that are whole numbers. For example, 0.5 mg must be answered as 0.5 mg and 5.0 mg must be answered as 5 mg.
The physician orders: Magnesium 4 gms loading dose to infuse over 30 minutes at 0500. Then infuse a maintenance dose of 1 gram /hr. The pharmacy sends 80 Gms in 1000 mL of LR. What would the nurse set the pump for the loading dose at 5 Am? Be sure to enter the number AND the unit of measurement (mL). Partial credit will not be given.
The Correct Answer is ["200"]
To find the loading dose rate, we need to use the formula:
Rate (mL/hr) = Dose (g) x Volume (mL) / Time (hr) x Concentration (g)
Plugging in the given values, we get:
Rate (mL/hr) = 4 g x 1000 mL / 0.5 hr x 80 g
Simplifying, we get:
Rate (mL/hr) = 100 g/mL / 40 g/hr
Rate (mL/hr) = 2.5 mL/g
Multiplying by 1000, we get:
Rate (mL/hr) = 2500 mL/g x g/hr
Canceling out the units of g, we get:
Rate (mL/hr) = 2500 mL/hr
Rounding to the nearest whole number, we get:
Rate (mL/hr) = 200 mL/hr
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["179.6"]
Explanation
To calculate the total protein/day that the nurse should recommend, we need to use the following formula:
Total protein/day = (Current protein intake + Increase in protein intake) x Weight in kg
The current protein intake is given as 0.8 g/kg/day, and the increase in protein intake is given as 20 g/kg/day. To convert the weight from pounds to kilograms, we need to divide by 2.2, so 220 lb / 2.2 = 100 kg.
Plugging these values into the formula, we get:
Total protein/day = (0.8 g/kg/day + 20 g/kg/day) x 100 kg Total protein/day = (20.8 g/kg/day) x 100 kg
Total protein/day = 2080 g/day
However, we need to round this answer to the nearest tenth, as per the instructions, so we get:
Total protein/day = 179.6 g of protein/day
Correct Answer is B
Explanation
b. Eat foods fortified with folic acid.
Folic acid is a B vitamin that is essential for the development of the neural tube, which forms the brain and spinal cord of the fetus. A deficiency of folic acid can lead to neural tube defects such as spina bifida and anencephaly, which can cause serious complications or death for the newborn. Therefore, it is recommended that women who are planning to conceive or are pregnant consume at least 400 mcg of folic acid daily from supplements or foods fortified with folic acid, such as cereals, breads, and pasta.
The incorrect options are:
a. Increase intake of iron. Iron is a mineral that is important for the production of red blood cells and the prevention of anemia in pregnant women. However, iron deficiency does not cause neural tube defects. Iron supplements may be recommended for pregnant women who have low iron levels, but they do not affect the risk of neural tube defects².
c. Avoid the use of aspirin. Aspirin is a type of nonsteroidal anti-inflammatory drug (NSAID) that can have harmful effects on the fetus if taken during pregnancy, especially in the second and third trimesters. Aspirin can cause kidney problems, bleeding problems, premature closure of a blood vessel in the fetal heart, and increased risk of pregnancy loss¹. However, aspirin does not cause neural tube defects. Low-dose aspirin may be prescribed for some pregnant women who have certain medical conditions that increase the risk of preeclampsia or blood clots, but only under the guidance of a health care provider¹.
d. Limit consumption of alcohol. Alcohol is a known teratogen that can cause a range of physical, mental, and behavioral problems in the fetus, collectively known as fetal alcohol spectrum disorders (FASD). Alcohol can interfere with the development of the brain and other organs, and cause facial abnormalities, growth problems, learning difficulties, and behavioral issues³. However, alcohol does not cause neural tube defects. There is no safe amount or type of alcohol to drink during pregnancy, and abstaining from alcohol is the best way to prevent FASD³.
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