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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.)

Answer and Explanation

The Correct Answer is ["2"]

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.

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Correct Answer is C

Explanation

Choice A Reason: This is incorrect because cervical insufficiency is a condition where the cervix dilates prematurely and painlessly during pregnancy, leading to preterm delivery or second trimester abortion. It is not a common cause of first trimester abortion, which occurs before 12 weeks of gestation.

Choice B Reason: This is incorrect because uterine fibroids are benign tumors that grow in or on the uterus. They may cause heavy bleeding, pain, or infertility, but they are not a common cause of first trimester abortion. They may increase the risk of miscarriage in later stages of pregnancy.

Choice C Reason: This is correct because fetal genetic abnormalities are the most common cause of first trimester abortion, accounting for up to 70% of cases. Fetal genetic abnormalities are errors in the number or structure of chromosomes that occur during fertilization or cell division. They can cause developmental defects or fetal demise that result in spontaneous abortion.

Choice D Reason: This is incorrect because maternal disease is not a common cause of first trimester abortion. Maternal disease refers to any medical condition that affects the mother's health or pregnancy outcome, such as diabetes, hypertension, thyroid disorders, or infections. Maternal disease may increase the risk of miscarriage in later stages of pregnancy or cause other complications such as preterm labor or preeclampsia.

A. striae gravidarum B. linea nigra C. vascular spiders D. melasma

Correct Answer is B

Explanation

Choice A: Striae gravidarum are stretch marks that appear on the abdomen, breasts, or thighs during pregnancy. They are caused by the tearing of the connective tissue in the dermis due to rapid growth or weight gain.

Choice B: Linea nigra is a dark vertical line that runs from the umbilicus to the pubic area. It is caused by increased melanin production due to hormonal changes during pregnancy. This is the correct choice because it matches the description in the question.

Choice C: Vascular spiders are dilated blood vessels that appear on the skin as red or purple spider-like lesions. They are caused by increased estrogen levels and blood volume during pregnancy. They are usually found on the face, neck, chest, or arms.

Choice D: Melasma is a condition that causes brown or gray patches on the face, especially on the forehead, cheeks, nose, or upper lip. It is caused by increased melanin production due to sun exposure and hormonal changes during pregnancy. It is also known as chloasma or the mask of pregnancy.

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Naxlex Comprehensive Predictor Exams

A nurse is conducting an in-service program for a group of nurses working at the women's health facility about the causes of spontaneous abortion. The nurse determines that the teaching was successful when the group identifies which condition as the most common cause of first trimester abortions?

Correct Answer is C

Explanation

Assessment of a pregnant woman reveals a pigmented line down the middle of her abdomen. The nurse documents this as which finding?

Correct Answer is B

Explanation

Assessment of a pregnant woman and her fetus reveals tachycardia and hypertension. There is also evidence suggesting vasoconstriction. The nurse would question the woman about use of which substance?

A client's last menstrual period was April 11. Using Naegele's rule, her estimated date of birth (EDB) would be:

On the first prenatal visit, examination of the woman's internal genitalia reveals a bluish coloration of the cervix and vaginal mucosa. The nurse documents this finding as:

During a prenatal visit, a pregnant woman says, "I know the amniotic fluid is important, but can you tell me more about it?" When describing amniotic fluid to a pregnant woman, which description would the nurse most likely include?

When assessing a woman in her first trimester, which emotional response would the nurse most likely expect to find?

A woman comes to the prenatal clinic suspecting that she is pregnant, and assessment reveals probable signs of pregnancy. Which findings would the nurse most likely assess? Select all that apply.

A nurse is planning a presentation about HIV for a church-based group. Which of the following information about HIV transmission should the nurse include?