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 A
Explanation
The nurse should expect the client to have pelvic pain, as this is the most common symptom of an ectopic pregnancy, which occurs when the fertilized ovum implants outside the uterine cavity, usually in the fallopian tube. Pelvic pain can range from mild to severe, and can be unilateral or bilateral, depending on the location and extent of the ectopic pregnancy. Pelvic pain can be caused by tubal distension, rupture, or bleeding.
The other findings are not typical of an ectopic pregnancy and may indicate other conditions.
- Severe nausea and vomiting are not common signs of an ectopic pregnancy, but they may occur in any pregnancy due to hormonal changes or other factors. Severe nausea and vomiting may also indicate hyperemesis gravidarum, which is a condition where nausea and vomiting are so severe that they cause dehydration, electrolyte imbalance, and weight loss.
- Copious vaginal bleeding is not a usual sign of an ectopic pregnancy, but it may occur if the ectopic pregnancy ruptures and causes hemorrhage. However, copious vaginal bleeding may also indicate other complications such as placenta previa, placental abruption, or spontaneous abortion.
- Uterine enlargement greater than expected for gestational age is not a sign of an ectopic pregnancy, but it may indicate a multiple gestation, hydatidiform mole, polyhydramnios, or a large fetus. An ectopic pregnancy usually causes uterine enlargement less than expected for gestational age, as the uterus does not contain a viable pregnancy.
Correct Answer is B
Explanation
The nurse should check the client's fundus first, as this is the most likely source of bleeding and clots in the postpartum period. The fundus is the upper part of the uterus that contracts and involutes after delivery to prevent hemorrhage. The nurse should palpate the fundus for firmness, height, and position, and massage it gently if it is boggy or displaced. A soft, high, or deviated fundus may indicate uterine atony or retained placental fragments, which can cause excessive bleeding and clots.
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