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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 D

Explanation

Choice A: 28 weeks' gestation is too early to screen for group B streptococcus infection. Group B streptococcus (GBS) is a type of bacteria that can cause serious infections in newborns if transmitted from the mother during labor and delivery. The optimal time to screen for GBS is between 35 and 37 weeks' gestation.

Choice B: 32 weeks' gestation is also too early to screen for GBS infection. Screening at this time may not reflect the true colonization status of the mother at the time of delivery, as GBS can be transient or intermittent.

Choice C: 16 weeks' gestation is much too early to screen for GBS infection. Screening at this time has no clinical value, as GBS colonization can change throughout pregnancy.

Choice D: 36 weeks' gestation is the appropriate time to screen for GBS infection. Screening at this time can identify mothers who are colonized with GBS and who need intrapartum antibiotic prophylaxis to prevent neonatal sepsis, pneumonia, and meningitis.

A. Ultrasound visualization of the fetus B. Softening of the cervix C. Positive pregnancy test D. Absence of menstruation E. Ballottement F. Auscultation of a fetal heart beat

Correct Answer is ["B","C","D","E"]

Explanation

Choice A Reason: This is incorrect because ultrasound visualization of the fetus is a positive sign of pregnancy, not a probable sign. A positive sign of pregnancy is a direct and definitive evidence of the presence of a fetus, such as fetal movement felt by the examiner or fetal heart sounds heard by a Doppler device.

Choice B Reason: This is correct because softening of the cervix, also known as Goodell's sign, is a probable sign of pregnancy. A probable sign of pregnancy is a strong indication of pregnancy based on physical changes in the reproductive organs, such as enlargement of the uterus or changes in the shape and consistency of the cervix.

Choice C Reason: This is correct because a positive pregnancy test, which detects human chorionic gonadotropin (hCG) in urine or blood, is a probable sign of pregnancy. However, it is not a conclusive sign, as hCG can also be produced by other conditions such as ectopic pregnancy, molar pregnancy, or trophoblastic tumors.

Choice D Reason: This is correct because absence of menstruation, also known as amenorrhea, is a probable sign of pregnancy. It occurs when ovulation and menstruation cease due to hormonal changes during pregnancy. However, it is not a definitive sign, as amenorrhea can also be caused by other factors such as stress, illness, or hormonal imbalances.

Choice E Reason: This is correct because ballottement, which is a rebounding of the fetus against the examiner's fingers during a pelvic examination, is a probable sign of pregnancy. It can be felt around 16 to 20 weeks of gestation.

Choice F Reason: This is incorrect because auscultation of a fetal heart beat, which can be heard by a fetoscope around 18 to 20 weeks of gestation or by a Doppler device around 10 to 12 weeks of gestation, is a positive sign of pregnancy, not a probable sign.

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Naxlex Comprehensive Predictor Exams

A nurse is providing prenatal care to a pregnant client. At which time would the nurse expect to screen the client for group B streptococcus infection?

Correct Answer is D

Explanation

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.

Correct Answer is ["B","C","D","E"]

Explanation

Assessment of a pregnant woman reveals that she compulsively craves ice. The nurse documents this finding as

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

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

Assessment of a pregnant woman reveals that she compulsively craves ice. The nurse documents this finding as

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:

Complete the following sentence by using the best option: The client is at great risk for dropdownevidenced by the client's serum dropdown.

A nurse is teaching a pregnant client in her first trimester about discomforts that she may experience. The nurse determines that the teaching was successful when the woman identifies which discomforts as common during the first trimester? Select all that apply.