A nurse is preparing to administer penicillin G benzathine 1.2 million units IM now. The amount available is penicillin G benzathine 600,000 units/mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["2 mL"]
The correct answer is 2 mL. To calculate the volume to administer, the nurse should use the following formula:
Volume (mL) = Dose (units) / Concentration (units/mL)
Plugging in the given values, we get:
Volume (mL) = 1,200,000 units / 600,000 units/mL
Volume (mL) = 2 mL
Rounding to the nearest whole number, we get 2 mL.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A: Hemodilution of pregnancy is a normal physiological phenomenon that occurs when the plasma volume increases more than the red blood cell mass, resulting in a lower hemoglobin concentration. The normal hemoglobin range for pregnant women in the second trimester is 10.5 to 14 g/dL.
Choice B: A multiple gestation pregnancy may cause a higher hemoglobin level due to increased erythropoietin production by the placenta. The normal hemoglobin range for pregnant women with twins in the second trimester is 12 to 16 g/dL.
Choice C: Greater-than-expected weight gain is not related to hemoglobin level. Weight gain during pregnancy depends on various factors such as pre-pregnancy weight, nutrition, activity level, and fetal growth.
Choice D: Iron-deficiency anemia is a condition where the hemoglobin level is below the normal range due to inadequate iron intake or absorption, blood loss, or increased iron demand. The signs and symptoms of iron-deficiency anemia include fatigue, pallor, weakness, shortness of breath, and pica.
Correct Answer is B
Explanation
Choice A Reason: This is incorrect because maternal diabetes is a condition where the mother has high blood sugar levels during pregnancy. It can cause polyhydramnios, or excess amniotic fluid, not oligohydramnios, or low amniotic fluid.
Choice B Reason: This is correct because fetal anencephaly is a congenital defect where the fetus lacks parts of the brain and skull. It can cause oligohydramnios, as the fetus does not produce enough urine to contribute to the amniotic fluid volume.
Choice C Reason: This is incorrect because placental abruption is a complication where the placenta detaches from the uterine wall before delivery. It can cause bleeding, pain, and fetal distress, but not oligohydramnios.
Choice D Reason: This is incorrect because neural tube defects are congenital defects where the spinal cord or brain does not develop properly. They can cause various neurological problems, but not oligohydramnios.
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