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
No explanation
Correct Answer is C
Explanation
c. Excessive uterine enlargement
A hydatidiform mole is a type of gestational trophoblastic disease, where the placenta develops abnormally into a mass of cysts that resemble grape-like clusters. A hydatidiform mole can cause excessive uterine enlargement, as the uterus grows larger than expected for the gestational age. The nurse should measure the fundal height and compare it with the expected value based on the last menstrual period or ultrasound.
The other findings are not associated with a hydatidiform mole and may indicate other conditions.
Whitish vaginal discharge is not a sign of a hydatidiform mole, but it may be normal in pregnancy due to increased cervical mucus production. However, if the discharge is foul-smelling, yellow, green, or bloody, it may indicate an infection or a complication such as preterm labor or placental abruption.
Fetal heart rate irregularities are not a sign of a hydatidiform mole, but they may indicate fetal distress or congenital anomalies. A hydatidiform mole usually does not have a viable fetus, and fetal heart tones are absent or very faint. The nurse should use a Doppler device or a fetal monitor to assess the fetal heart rate and rhythm.
d. Rapidly dropping human chorionic gonadotropin (hCG) levels are not a sign of a hydatidiform mole, but they may indicate a spontaneous abortion or an ectopic pregnancy. A hydatidiform mole usually causes very high hCG levels, as the abnormal placental tissue secretes large amounts of this hormone. The nurse should perform a urine or blood test to measure the hCG levels and monitor them for chan
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