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A nurse is reviewing the laboratory report for a client who is in active labor. The client tested positive for group B streptococcus B-hemolytic. Which of the following medications should the nurse plan to administer to the client?

Doxycycline.

Cefotetan.

Ampicillin.

Fluconazole.

Answer and Explanation

The Correct Answer is C

The correct answer is c. Ampicillin.

Rationale:

Group B Streptococcus (GBS) B-hemolytic is a bacterium that can colonize the vagina and rectum of pregnant women. While usually harmless to the mother, it can be passed to the newborn during birth and cause serious infections, including pneumonia, meningitis, and sepsis.
Ampicillin is the first-line antibiotic recommended by the Centers for Disease Control and Prevention (CDC) for the prevention of GBS disease in newborns. It belongs to the penicillin class of antibiotics, which are highly effective against GBS and generally well-tolerated by pregnant women and newborns.
Doxycycline is not recommended for GBS prophylaxis due to its poor penetration into amniotic fluid and potential for causing tooth discoloration and bone development problems in newborns.
Cefotetan is an alternative option for women with penicillin allergy, but ampicillin is still preferred due to its lower cost and broader spectrum of activity against GBS strains.
Fluconazole is an antifungal medication and has no activity against GBS bacteria.

Detailed Rationale for Each Choice:

a. Doxycycline:

Rationale against:
- Poor penetration into amniotic fluid: Doxycycline does not effectively reach the amniotic sac, where the baby is surrounded, and therefore may not adequately protect the newborn from GBS infection.
- Adverse effects in newborns: Doxycycline can cause tooth discoloration and bone development problems in infants exposed in utero.

b. Cefotetan:

Rationale for:
- Alternative for penicillin allergy: Cefotetan is a cephalosporin antibiotic effective against GBS and can be used in women with penicillin allergy.
Rationale against:
- Second-line option: Ampicillin is the preferred choice due to its lower cost and broader spectrum of activity against GBS strains.

c. Ampicillin:

Rationale for:
- First-line antibiotic: Ampicillin is the CDC-recommended first-line antibiotic for GBS prophylaxis due to its:
  - High effectiveness against GBS: Ampicillin has a broad spectrum of activity against GBS strains.
  - Good safety profile: Ampicillin is generally well-tolerated by pregnant women and newborns.
  - Cost-effectiveness: Ampicillin is a relatively inexpensive antibiotic compared to other options.

d. Fluconazole:

Rationale against:
- Antifungal medication: Fluconazole is an antifungal medication and has no activity against GBS, which is a bacterium.

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Correct Answer is D

Explanation

Choice A rationale:

To calculate the estimated date of delivery using Nägele's Rule, subtract three months from the first day of the last menstrual period (August 10), and then add seven days. However, choice A (May 20) is incorrect because it adds eight days instead of seven.

Choice B rationale:

It does not add seven days to the calculation.

Choice C rationale:

It adds three days instead of seven to the calculation

Choice D rationale:

It follows the correct application of Nägele's Rule. Subtracting three months from August 10 gives us May 10, and then adding seven days gives us May 17as the estimated date of delivery.

A. "Ultrasound is used to determine gestational age in the first trimester.". B. "Ultrasound is used to perform a biophysical profile in the first trimester.". C. "Ultrasound is used to observe for placental maturity in the first trimester.". D. "Ultrasound is used to detect intrauterine growth restriction in the first trimester.".

Correct Answer is A

Explanation

Choice A rationale:

Determining gestational age in the first trimester is a common and important use of ultrasound. It helps confirm the estimated due date and monitor the fetus's growth and development.

Choice B rationale:

Performing a biophysical profile in the first trimester is not a common use of ultrasound. Biophysical profiles are usually performed in the second or third trimester to assess fetal well-being.

Choice C rationale:

Observing placental maturity in the first trimester is not a standard use of ultrasound. Placental maturity is typically assessed later in pregnancy, especially in the third trimester.

Choice D rationale:

Detecting intrauterine growth restriction in the first trimester is not a primary use of ultrasound. Intrauterine growth restriction is more commonly assessed in the later stages of pregnancy when fetal growth is a concern.

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A nurse is reviewing the laboratory report for a client who is in active labor. The client tested positive for group B streptococcus B-hemolytic. Which of the following medications should the nurse plan to administer to the client?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is calculating the estimated date of delivery for a client who reports that the first day of her last menstrual period was August 10. Using Nägele's Rule, which of the following is the client's estimated date of delivery?

Correct Answer is D

Explanation

A nurse is teaching a newly licensed nurse about the uses of ultrasonography in the first trimester of pregnancy. Which of the following statements by the newly licensed nurse indicates an understanding of the teaching?

Correct Answer is A

Explanation

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