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 B
Explanation
The nurse should tell the client that the recommendation for her is about 15 to 25 pounds, as this is the range of weight gain that is considered healthy and appropriate for a pregnant woman who has a BMI of 26.5, which falls in the overweight category (BMI of 25 to 29.9). The weight gain should be gradual and consistent, with an average of
0.6 pounds per week in the second and third trimesters.
a. The nurse should not tell the client that a gain of about 25 to 35 pounds is best for her and for her baby, as this is the range of weight gain that is recommended for a pregnant woman who has a normal BMI (18.5 to 24.9). Gaining more weight than necessary can increase the risk of gestational diabetes, hypertension, preeclampsia, cesarean delivery, and postpartum weight retention.
c. The nurse should not tell the client that she should gain 11 to 20 pounds, as this is the range of weight gain that is advised for a pregnant woman who has a BMI of 30 or higher, which falls in the obese category. Gaining less weight than needed can compromise fetal growth and development, and increase the risk of preterm birth, low birth weight, and intrauterine growth restriction.
d. The nurse should not tell the client that it really doesn't mater exactly how much weight she gains, as long as her diet is healthy, as this is a vague and inaccurate statement that does not provide any guidance or education to the client. The amount of weight gain during pregnancy does mater, as it affects both maternal and fetal health and outcomes. A healthy diet is important, but it is not the only factor that influences weight gain. The nurse should also consider the client's pre-pregnancy weight, physical activity level, medical history, and gestational age.
Correct Answer is B
Explanation
b. Apply an external fetal monitor.
The nurse should apply an external fetal monitor to assess the fetal heart rate and activity, as well as the presence and intensity of contractions. Placenta previa is a condition where the placenta covers part or all of the cervical opening, which can cause painless, bright red bleeding in the third trimester. Placenta previa can compromise fetal oxygenation and perfusion, and can also trigger preterm labor. Therefore, the nurse should monitor the fetal well- being and readiness for delivery.
The other actions are not appropriate and may cause harm to the client or the fetus.
a. The nurse should not perform a rectal exam, as this can cause trauma or infection to the rectum or the placenta, and increase the risk of bleeding or rupture.
c. The nurse should not complete a vaginal exam, as this can dislodge or damage the placenta, and cause severe
hemorrhage or shock.
d. The nurse should not apply ice to the perineal area, as this can cause vasoconstriction and reduce blood flow to the placenta and the fetus, and worsen their condition.
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