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 C
Explanation
The client's symptoms are suggestive of placenta previa, which is a condition where the placenta covers part or all of the cervical opening. Placenta previa can cause painless, bright red bleeding in the third trimester, especially after sexual intercourse or a pelvic exam. The bleeding can be life-threatening for both the mother and the fetus, and the condition requires immediate evaluation and management. An ultrasound is the best diagnostic tool to confirm the location of the placenta and rule out other causes of bleeding, such as placental abruption or uterine rupture.The other options are not relevant to the client's situation and would not be indicated by an ultrasound.Fetal lung maturity is not a concern for a client who is at 38 weeks of gestation, as most fetuses have developed sufficient surfactant production by this time. Fetal lung maturity can be assessed by amniocentesis or by measuring the lecithin/sphingomyelin ratio in the amniotic fluid.Frequency and duration of contractions are not present in the client's case, as she has no signs of labor. Contractions can be monitored by external or internal tocodynamometry or by palpation.d. Rh incompatibility is a condition where the mother's blood type is Rh-negative and the fetus's blood type is Rh- positive, which can cause hemolytic disease of the newborn. Rh incompatibility can be detected by blood tests and prevented by administering Rh immunoglobulin to the mother during pregnancy and after delivery.
Correct Answer is C
No explanation
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