Prenatal Care Practice Questions

Q: A 23-year-old woman presents at 10 weeks gestation with a positive rapid plasma reagin (RPR) titer of 1:64 and positive TPHA. She was treated for primary syphilis 2 years ago with appropriate penicillin therapy, after which her RPR declined to 1:2. She denies any new symptoms or sexual contacts since then. What is the most appropriate management?

Retreatment with three doses of benzathine penicillin G. **Retreatment with three doses of benzathine penicillin G** - The significant **fourfold or greater increase in RPR titer (from 1:2 to 1:64)** indicates **reinfection or treatment failure**, even in the absence of symptoms or reported new exposures. - Given the **2-year interval since initial treatment** and **uncertain timing of reinfection**, this should be managed as **late latent syphilis or syphilis of unknown duration**, which requires **three weekly doses of benzathine penicillin G 2.4 million units IM**. - In pregnant women, this approach is critical to **prevent congenital syphilis** and ensure adequate treponemacidal levels throughout pregnancy. *HIV testing followed by treatment decision* - While **HIV testing is crucial for all pregnant women** and those with syphilis, it is **not the primary determinant** of treatment for syphilis reinfection. - The need for syphilis treatment is established by the **rising RPR titer**, irrespective of HIV status. - Treatment should **not be delayed** pending HIV test results. *No treatment needed as this represents serological scar* - A **serological scar** would typically involve low, stable non-treponemal titers (e.g., 1:1 or 1:2) without a significant rise. - The **1:64 RPR titer** represents a **32-fold increase** from the previous 1:2, indicating **active infection**, not a serological scar. - Serological scars remain stable and do not show such dramatic increases. *Retreatment with one dose of benzathine penicillin G* - A **single dose of benzathine penicillin G** is appropriate for **early syphilis (primary, secondary, or early latent <1 year duration)**. - In this case, the **2-year interval** since original treatment and **uncertain timing of reinfection** necessitate treating as **late latent syphilis**, which requires **three doses**. - During pregnancy, the more conservative approach is essential to prevent congenital syphilis.

Q: What is the most appropriate topical treatment for external genital warts in pregnancy?

Trichloroacetic acid (TCA). ***Trichloroacetic acid (TCA)*** - **TCA** is a caustic agent that **chemically ablates** warts and is considered safe for use in **pregnancy** as it is not systemically absorbed. - It works by **denaturing proteins** and causing necrosis of the wart tissue, leading to its destruction. *5-Fluorouracil cream* - **5-Fluorouracil** is an **antineoplastic agent** that inhibits cell proliferation and DNA synthesis. - It is **contraindicated in pregnancy** due to potential **teratogenic effects** on the fetus. *Imiquimod cream* - **Imiquimod** is an **immune response modifier** that stimulates interferon and cytokine production. - It is **not recommended in pregnancy** due to **insufficient safety data** regarding its systemic absorption and potential effects on fetal development. *Podophyllin resin* - **Podophyllin** is a **cytotoxic agent** that inhibits cell division and causes tissue necrosis. - It is **contraindicated in pregnancy** due to significant **systemic absorption** and high risk of **fetal toxicity and teratogenicity**.

Q: A pregnant woman presents with an IUD in place, and the thread is clearly visible. She wishes to continue the pregnancy. What is the most appropriate next step?

Remove gently. ***Remove gently*** - When the **IUD thread is visible**, gentle removal is recommended if the woman wishes to **continue the pregnancy**, as this significantly reduces the risk of miscarriage and infection. - Leaving an **IUD in situ** during pregnancy increases risks of **septic miscarriage**, **preterm delivery**, and **chorioamnionitis**. *Leave the IUD inside* - Leaving an **IUD in place** during pregnancy increases the risks of **septic miscarriage**, **chorioamnionitis**, and **preterm labor**. - The presence of the IUD can also lead to **placental complications** and difficulties with fetal development. *MTP (Medical Termination of Pregnancy)* - MTP is an option for unintended pregnancies but is not the most appropriate first step when the patient explicitly **wishes to continue the pregnancy**. - MTP would be considered if the patient chose to terminate, but the question states she wants to continue. *Cesarean section* - **Cesarean section** is a mode of delivery and is not an appropriate initial intervention for an early pregnancy with an **IUD in situ**. - The removal of an IUD from an early pregnancy does not necessitate a cesarean section.

Q: A woman has been using oral contraceptive pills (OCP) for 5 months and has had amenorrhea for the last 6 weeks. What is the best method to calculate the gestational age in this case?

Crown-Rump Length (CRL) by Ultrasound (USG). ***Crown-Rump Length (CRL) by Ultrasound (USG)*** - For women with **irregular menstrual cycles**, unknown last menstrual period, or those on **hormonal contraceptives**, **early ultrasound measurement of CRL** is the most accurate method for gestational age determination. - CRL is most accurate between **6 and 14 weeks of gestation**, providing a precise estimate within 3-5 days. *Abdominal girth* - **Abdominal girth** is an unreliable and highly variable measure that is not used for accurate gestational age determination. - It is influenced by maternal body habitus, uterine fibroids, and amniotic fluid volume, making it imprecise. *280 days from Last Menstrual Period (LMP)* - This method (Naegele's rule) assumes a **regular 28-day menstrual cycle** and ovulation on day 14, which is not applicable for a woman on **oral contraceptive pills (OCP)** where ovulation is suppressed. - The use of OCPs alters the hormonal profile, generally causing **amenorrhea or withdrawal bleeding** that does not reflect a true ovulatory cycle. *256 days from Last Menstrual Period (LMP)* - This calculation is not a standard or recognized method for determining **estimated date of delivery (EDD)**. - The standard calculation from LMP uses **280 days (40 weeks)** for a full-term pregnancy.

Q: A pregnant woman comes for a routine antenatal checkup. She had a history of a twin pregnancy one year ago. What is her gravida and para status?

G2P1. ***G2P1*** - **Gravida (G)** refers to the total number of confirmed pregnancies, regardless of outcome. This current pregnancy is her second, making her G2. - **Para (P)** denotes the number of pregnancies that have reached viability (typically 20 weeks gestation or more), producing one or more fetuses. Her previous twin pregnancy, regardless of the number of babies, counts as one para event. *G2P3* - While G2 is correct (current pregnancy + previous twin pregnancy), P3 would imply three separate birth events beyond viability, which is not supported by the history of one twin pregnancy. - The number of babies born in a single pregnancy beyond viability does not increase the 'P' count; it refers to the number of pregnancies carried to term. *G2P2* - G2 is correct, but P2 would mean she had two separate pregnancies that reached viability. She only had one previous pregnancy that reached viability (the twin pregnancy). - The para count is determined by the number of deliveries, not the number of fetuses delivered. *G2P0* - While G2 is correct, P0 would mean she has never carried a pregnancy to the point of viability. - Her history clearly states a twin pregnancy one year ago, indicating a previous pregnancy carried to term, making P0 incorrect.

Q: The following cost-effective investigations are routinely recommended in the screening of antenatal mothers, EXCEPT:

Echocardiography for cardiac disease. ***Echocardiography for cardiac disease*** - **Echocardiography** is not a *routinely recommended* screening investigation for all antenatal mothers due to its cost and the relatively low prevalence of significant congenital heart disease requiring universal screening. - It is typically performed only if there are **specific risk factors** or suspicious findings suggesting cardiac pathology. *Blood sugar levels for GDM* - Screening for **gestational diabetes mellitus (GDM)** with blood sugar levels (e.g., glucose challenge test) is routinely recommended due to the potential maternal and fetal complications if untreated. - GDM is a common condition that can be effectively managed with early diagnosis, making screening a **cost-effective** preventive measure. *VDRL for syphilis* - Screening for **syphilis** using tests like VDRL (Venereal Disease Research Laboratory) is a standard and *routinely recommended* antenatal investigation. - Early detection and treatment of syphilis in pregnant women prevent serious adverse outcomes such as **congenital syphilis**, which can cause severe fetal morbidity and mortality. *Urine analysis for bacteriuria* - **Urine analysis** for **asymptomatic bacteriuria** is routinely recommended during pregnancy because untreated bacteriuria can lead to pyelonephritis, preterm labor, and low birth weight. - It is a simple, **cost-effective** test with significant benefits for maternal and fetal health.

Q: What is the normal cervical length?

3 cm. ***3 cm*** - The **normal cervical length** in a non-pregnant woman typically measures **3-4 cm**, with **3 cm** being the commonly cited average. - During pregnancy, cervical length is monitored via transvaginal ultrasound, and a length ≥3 cm is considered reassuring for pregnancy maintenance. - This measurement is crucial for assessing the risk of preterm labor and cervical incompetence. *10 cm* - A cervical length of **10 cm is anatomically impossible** and not consistent with normal female reproductive anatomy. - The entire uterus (fundus to external os) measures approximately 7-8 cm in a non-pregnant state, making 10 cm for cervix alone unrealistic. *5 cm* - While **5 cm is within the upper range** of normal cervical length, it is longer than the typical average. - Cervical length can vary between 3-5 cm in healthy women, but **3-4 cm is most commonly cited** as the standard reference. *7 cm* - A cervical length of **7 cm is longer than normal** and would be considered abnormally elongated. - This measurement approximates the entire uterine length (fundus to external os), not just the cervix.

Q: A 25-year-old woman presents with vulvar ulcers and inguinal lymphadenopathy. PCR testing is positive for HSV-2. She is 20 weeks pregnant. Which of the following is the most appropriate management?

Oral acyclovir with continued monitoring during pregnancy. ***Oral acyclovir with continued monitoring during pregnancy*** - **Oral acyclovir** is the recommended treatment for HSV-2 during pregnancy to manage acute outbreaks and prevent recurrence, as it is **safely used** throughout pregnancy. - Continued monitoring ensures the effectiveness of treatment and allows for adjustments as pregnancy progresses, especially regarding labor and delivery planning to prevent **neonatal HSV transmission**. *Topical acyclovir only* - **Topical acyclovir** has limited systemic absorption and is generally **less effective** for treating established outbreaks, especially with lymphadenopathy, compared to oral antivirals. - It does not significantly reduce the risk of future outbreaks or vertical transmission to the fetus. *Valacyclovir with planned cesarean delivery* - While **valacyclovir** is also an appropriate antiviral for HSV, a **planned cesarean delivery** is typically reserved for women with active genital lesions or prodromal symptoms *at the onset of labor* to prevent neonatal transmission. - Prophylactic cesarean delivery based solely on a mid-pregnancy diagnosis of HSV-2, without active lesions near term, is not indicated. *Immediate cesarean delivery* - **Immediate cesarean delivery** is not indicated at 20 weeks gestation, as the fetus is not viable and there's no immediate obstetrical emergency. - This option would also pose significant risks to both the mother and fetus without providing any benefit for managing HSV at this stage of pregnancy.

Q: A pregnant woman at 32 weeks gestation is diagnosed with gonorrhea. What is the most appropriate management approach?

Ceftriaxone 500 mg IM single dose. ***Ceftriaxone 500 mg IM single dose*** - **Ceftriaxone 500 mg IM** is the recommended first-line treatment for **uncomplicated gonorrhea** in pregnant women according to current CDC guidelines. - This dose is safe and effective during pregnancy and provides adequate coverage to eradicate *Neisseria gonorrhoeae*. - A **single intramuscular dose** is sufficient to treat the infection and prevent complications such as **ophthalmia neonatorum** and **disseminated gonococcal infection** in the neonate. *Defer treatment until post-partum* - Deferring treatment would put the fetus at significant risk for **ophthalmia neonatorum** and **disseminated gonococcal infection** during delivery. - Untreated maternal gonorrhea can also lead to **premature rupture of membranes**, **preterm labor**, and **chorioamnionitis**. - Prompt treatment is crucial to prevent these severe maternal and neonatal complications. *Amoxicillin-clavulanate for 7 days* - **Amoxicillin-clavulanate** is not effective against *Neisseria gonorrhoeae* due to widespread resistance. - This combination is more commonly used for bacterial infections like **otitis media**, **sinusitis**, or **urinary tract infections**. - It is not the recommended antibiotic for gonorrhea treatment. *Azithromycin 2g oral single dose* - While **azithromycin** is used in combination with ceftriaxone for **presumptive coinfection with chlamydia**, it is not recommended as monotherapy for gonorrhea due to increasing resistance. - A 2g oral dose can cause significant **gastrointestinal side effects** including nausea and diarrhea. - Monotherapy with azithromycin has unacceptably high failure rates for gonorrhea treatment.

Question 1

A 23-year-old woman presents at 10 weeks gestation with a positive rapid plasma reagin (RPR) titer of 1:64 and positive TPHA. She was treated for primary syphilis 2 years ago with appropriate penicillin therapy, after which her RPR declined to 1:2. She denies any new symptoms or sexual contacts since then. What is the most appropriate management?

Accepted Answer

Retreatment with three doses of benzathine penicillin G

Answer

HIV testing followed by treatment decision

Answer

No treatment needed as this represents serological scar

Answer

Retreatment with one dose of benzathine penicillin G

Question 2

What is the most appropriate topical treatment for external genital warts in pregnancy?

Accepted Answer

Trichloroacetic acid (TCA)

Answer

5-Fluorouracil cream

Answer

Imiquimod cream

Answer

Podophyllin resin

Question 3

A 34-year-old pregnant woman at 28 weeks gestation is found to have a positive treponemal test (TPHA) but negative non-treponemal test (VDRL) during routine antenatal screening. She has no history of syphilis treatment. What is the most appropriate interpretation and management?

Accepted Answer

Latent syphilis cannot be ruled out - treat with benzathine penicillin

Answer

Successfully treated past infection - no treatment needed

Answer

Biological false positive - repeat testing in 4 weeks

Answer

False positive TPHA - no treatment needed

Question 4

A pregnant woman presents with an IUD in place, and the thread is clearly visible. She wishes to continue the pregnancy. What is the most appropriate next step?

Accepted Answer

Remove gently

Answer

Leave the IUD inside

Answer

MTP (Medical Termination of Pregnancy)

Answer

Cesarean section

Question 5

A woman has been using oral contraceptive pills (OCP) for 5 months and has had amenorrhea for the last 6 weeks. What is the best method to calculate the gestational age in this case?

Accepted Answer

Crown-Rump Length (CRL) by Ultrasound (USG)

Answer

Abdominal girth

Answer

280 days from Last Menstrual Period (LMP)

Answer

256 days from Last Menstrual Period (LMP)

Question 6

A pregnant woman comes for a routine antenatal checkup. She had a history of a twin pregnancy one year ago. What is her gravida and para status?

Accepted Answer

G2P1

Answer

G2P3

Answer

G2P2

Answer

G2P0

Question 7

The following cost-effective investigations are routinely recommended in the screening of antenatal mothers, EXCEPT:

Accepted Answer

Echocardiography for cardiac disease

Answer

Blood sugar levels for GDM

Answer

VDRL for syphilis

Answer

Urine analysis for bacteriuria

Question 8

What is the normal cervical length?

Accepted Answer

3 cm

Answer

10 cm

Answer

5 cm

Answer

7 cm

Question 9

A 25-year-old woman presents with vulvar ulcers and inguinal lymphadenopathy. PCR testing is positive for HSV-2. She is 20 weeks pregnant. Which of the following is the most appropriate management?

Accepted Answer

Oral acyclovir with continued monitoring during pregnancy

Answer

Topical acyclovir only

Answer

Valacyclovir with planned cesarean delivery

Answer

Immediate cesarean delivery

Question 10

A pregnant woman at 32 weeks gestation is diagnosed with gonorrhea. What is the most appropriate management approach?

Accepted Answer

Ceftriaxone 500 mg IM single dose

Answer

Defer treatment until post-partum

Answer

Amoxicillin-clavulanate for 7 days

Answer

Azithromycin 2g oral single dose

Prenatal Care — MCQs

Prenatal Care — MCQs

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