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 D
Explanation
The nurse's first action should be to massage the client's fundus, as this can help stimulate uterine contraction and prevent hemorrhage. The fundus is the upper part of the uterus that contracts and involutes after delivery to compress the blood vessels and stop bleeding. The nurse should palpate the fundus for firmness, height, and position, and massage it gently if it is boggy or displaced.
The other actions are not the first priority and may be done after massaging the fundus.
The nurse should observe for the pooling of blood under the buttocks, as this can indicate a large amount of blood loss that may not be visible on the perineal pad. However, this is not the first action to take, as it does not address the cause of the bleeding or stop it from continuing.
The nurse should assess the client's blood pressure, as this can indicate the severity of blood loss and the presence of shock. However, blood pressure may not change significantly until a large amount of blood is lost, and it is not specific to the cause of bleeding. Therefore, blood pressure is not the first action to take.
The nurse should prepare to administer a prescribed oxytocic preparation, such as oxytocin or methylergonovine, as this can enhance uterine contraction and reduce bleeding. However, this requires a provider's order and may take time to obtain and administer. Therefore, an oxytocic preparation is not the first action to take.
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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