Prenatal Care Practice Questions

Q: At which gestational age is urinary retention first observed in pregnancy?

10 weeks. ***10 weeks*** - Urinary retention can first be observed around **10 weeks of gestation** due to the growing uterus impinging on the bladder neck. - This period is also when **uterine retroversion** is more likely to cause urinary obstruction as the uterus ascends out of the pelvis. *18 weeks* - By 18 weeks, the uterus has typically risen out of the pelvis, generally **reducing the risk** of simple uterine impingement causing acute urinary retention. - While other urinary tract issues can arise, acute retention due to uterine position is less common at this stage. *22 weeks* - At 22 weeks, the uterus is significantly larger and well-situated in the abdomen, making mechanical compression of the bladder neck less likely as a primary cause of **acute urinary retention**. - More complex causes would likely be responsible if retention occurred at this gestational age. *34 weeks* - Late-term pregnancy at 34 weeks might present with increased urinary frequency and some overflow incontinence due to the large fetal head putting pressure on the bladder. - However, **acute urinary retention** due to uterine retroversion is typically not seen at this stage, as the uterus is fully abdominal.

Q: At 20 weeks of gestation amniotic fluid volume is?

200 ml. ***200 ml*** - At **20 weeks of gestation**, the average amniotic fluid volume is approximately **200 ml**, primarily derived from fetal urination. - This volume is crucial for **fetal development**, protecting against trauma and allowing for lung maturation. *400 ml* - An amniotic fluid volume of 400 ml is typically observed later in gestation, often around **24-28 weeks**, as fetal urination increases. - While still within a normal range for some stages, it's generally higher than the average at 20 weeks. *600 ml* - A volume of 600 ml is characteristic of the **late second trimester** to early third trimester, around **28-32 weeks**, when the fetus is significantly larger and producing more urine. - This value would be considered high for a 20-week gestation and could indicate **polyhydramnios** if significantly elevated. *800 ml* - This volume is usually seen in the **third trimester**, often peaking around **33-34 weeks**, reflecting maximal fetal urine output. - An amniotic fluid volume of 800 ml at 20 weeks would be a clear indication of **severe polyhydramnios**, which can be associated with various fetal anomalies.

Q: At which gestational week does the maximum volume of amniotic fluid occur?

36 weeks. ***36 weeks*** - The volume of **amniotic fluid** gradually increases during pregnancy, reaching its **peak** around **36 weeks** of gestation. - After 36 weeks, the volume of amniotic fluid typically begins to **decrease** as the pregnancy approaches term. *32 weeks* - At 32 weeks, the amniotic fluid volume is still **increasing** and has not yet reached its maximum level. - The fetus is actively growing and contributing to fluid production, but the peak is still several weeks away. *34 weeks* - Although significant, the amniotic fluid volume at 34 weeks has not yet reached its **maximum**. - The volume will continue to rise for another two weeks before plateauing and then declining. *40 weeks* - By 40 weeks, a normal-term pregnancy, the volume of amniotic fluid has typically **decreased** from its peak at 36 weeks. - A declining amniotic fluid volume (oligohydramnios) can be a concern at term if it's too low.

Q: A female patient presents to you with six weeks of amenorrhea, associated with abdominal pain and vaginal bleeding with normal blood pressure. Investigations revealed beta-hCG to be 1400 mIU/mL. An ultrasound scan was done which showed a trilaminar endometrium with normal adnexa. What is the next best step in the management of this patient?

Repeat beta – hCG after 48 hours. ***Repeat beta – hCG after 48 hours*** - With a beta-hCG of 1400 mIU/mL and no intrauterine pregnancy visible on ultrasound, repeating **beta-hCG after 48 hours** is crucial to assess its doubling time, which helps differentiate between a normal intrauterine pregnancy, ectopic pregnancy, or miscarriage. - An hCG level of 1400 mIU/mL is below the discriminatory zone (typically 1500-2000 mIU/mL) where an intrauterine gestational sac should be visible, making serial measurements essential. *Repeat ultrasound after 5 days* - While a repeat ultrasound may eventually be necessary, waiting 5 days without an interim hCG measurement could delay diagnosis and management, especially if the hCG levels are rising rapidly or are in a concerning range. - The current beta-hCG level is below the **discriminatory zone**, meaning a gestational sac would likely still not be visible even after 5 days, making hCG follow-up a more immediate and informative step. *Measurement of serum progesterone* - **Serum progesterone** levels can indicate overall pregnancy viability, but they do not specifically localize the pregnancy or differentiate between an intrauterine pregnancy and an ectopic pregnancy as effectively as serial hCG levels. - A single low progesterone level could indicate a non-viable pregnancy (either intrauterine or ectopic), but it does not guide immediate management for distinguishing between locations. *Laparoscopy* - **Laparoscopy** is an invasive surgical procedure and is not the first diagnostic step unless there are signs of ruptured ectopic pregnancy or hemodynamic instability, which are not present in this patient (normal blood pressure, mild symptoms). - It would be premature to proceed with laparoscopy without further biochemical or sonographic evidence of an ectopic pregnancy or clear signs of clinical deterioration.

Q: A pregnant woman comes to the clinic. She has previously delivered twins. What is the correct representation of her obstetric score?

G2P1 (2 pregnancies, 1 delivery). ***G2P1 (2 pregnancies, 1 delivery)*** - **Gravidity (G)** refers to the total number of times a woman has been pregnant, regardless of outcome. This patient has been pregnant **twice**: once previously (resulting in twins) and once currently. - **Parity (P)** refers to the number of deliveries after 20 weeks gestation. Multiple gestation (twins, triplets) counts as **ONE delivery**, not separate deliveries. Therefore, her previous twin delivery = **P1**. - Current pregnancy status: She is currently pregnant (contributes to gravidity) but has not yet delivered this pregnancy (does not contribute to parity yet). *G3P1 (3 pregnancies, 1 delivery)* - This incorrectly counts the current pregnancy as if she has been pregnant three times total. - The parity is correct (1 delivery), but gravidity is overestimated. *G3P2 (3 pregnancies, 2 deliveries)* - This makes two errors: incorrectly counting three total pregnancies AND incorrectly counting the twin delivery as two separate deliveries. - Remember: multiple gestation = one delivery event, not multiple deliveries. *G2P2 (2 pregnancies, 2 deliveries)* - Gravidity is correct (2 pregnancies total), but this incorrectly counts the twin delivery as two separate deliveries. - Parity should be 1, not 2, because delivering twins is a single delivery event.

Q: A primigravida presents to you with anemia early in her pregnancy. She is 7 weeks pregnant as seen on ultrasound. Her hemoglobin level is 9 g/dL. When should the iron supplements be started for her?

Immediately upon diagnosis. ***Correct Option: Immediately upon diagnosis*** - **Iron deficiency anemia** in pregnancy (Hb <11 g/dL in first trimester) should be addressed promptly to prevent adverse maternal and fetal outcomes - Initiating treatment at 7 weeks ensures sustained **iron stores** throughout pregnancy - WHO and ACOG guidelines recommend **immediate supplementation** when anemia is diagnosed during antenatal screening - Early treatment prevents worsening due to physiological plasma volume expansion in second trimester *Incorrect Option: 8 to 10 weeks* - Delaying treatment for 1-3 weeks after diagnosis at 7 weeks is not justified medically - Any delay in treatment allows anemia to worsen and depletes maternal iron stores - Recommended practice is **immediate supplementation** if hemoglobin count is less than 11 g/dL during first two antenatal visits *Incorrect Option: After 14 weeks* - Waiting until second trimester (after 14 weeks) would allow the **anemia to worsen**, making it harder to correct before physiological drop in hemoglobin due to plasma volume expansion - Fetal development, particularly **neurological development**, is rapid in first trimester and iron is crucial during this period - Delaying 7 weeks after diagnosis risks maternal complications and suboptimal fetal development *Incorrect Option: After 20 weeks* - Starting supplementation this late (13 weeks after diagnosis) would result in severe maternal iron deficiency - Significant **fetal iron demands** increase by third trimester, making it difficult to replete maternal stores if supplementation starts this late - **Severe anemia** poses risks such as **preterm birth**, low birth weight, and **postpartum hemorrhage**

Q: Nuchal translucency in USG can be detected at_____weeks of gestation.

11-13 weeks. ***11-13 weeks*** - Nuchal translucency (NT) is a **first-trimester ultrasound marker** used for screening for chromosomal abnormalities like **Down syndrome**. - The optimal window for accurate measurement is between **11 weeks 0 days and 13 weeks 6 days** of gestation, or when the crown-rump length (CRL) is between 45 mm and 84 mm. *18-20 weeks* - This period is typically dedicated to the **anomaly scan** or **mid-pregnancy scan**, which focuses on detecting structural abnormalities in the fetus. - While other markers like **nuchal fold thickness** can be assessed later, the diagnostic value of Nuchal Translucency is decreased by this time. *8-10 weeks* - At this early stage, the fetus is generally **too small** for accurate and consistent measurement of the nuchal translucency. - The nuchal translucency itself might not be fully developed or easily distinguishable for precise measurement. *20-22 weeks* - By this gestational age, the **nuchal translucency has usually resolved** or is no longer a reliable marker for chromosomal screening. - This period is well beyond the recommended window for NT measurement, making it unsuitable for this specific screening test.

Q: During which trimester is the double decidua sign typically observed?

First trimester. ***First trimester*** - The **double decidua sign** is a classic sonographic finding seen in the **first trimester** that helps confirm an intrauterine pregnancy. - It results from the visualization of the **decidua capsularis** and the **decidua parietalis** separated by a small amount of intrauterine fluid. *Early second trimester* - By the early second trimester, the **placenta** is usually well-formed, and the **chorion laeve** fuses with the decidua parietalis, causing the double decidua sign to no longer be clearly visible. - At this stage, other markers like **fetal anatomy** scans are more diagnostically relevant. *Late second trimester* - The late second trimester is well beyond the period when the double decidua sign is identifiable. - **Fetal growth** and **organ development** are the primary focus of sonography during this time. *Third trimester* - In the third trimester, the pregnancy is advanced, and the double decidua sign has long since disappeared. - Sonography focuses on **fetal well-being**, **growth**, and **placental position**.

Q: A 36-week pregnant lady with previous twin delivery. What is the Obstetric score?

G2P1. ***G2P1*** - **Gravida (G)** refers to the total number of pregnancies, including the current one, so the current pregnancy (1) plus the previous twin delivery (1) equals **G2**. - **Parity (P)** refers to the number of times a woman has given birth to a fetus (or fetuses) beyond 20 weeks gestation, irrespective of whether the baby was born alive or is now living. A **twin delivery counts as one parity event** because it was one pregnancy that resulted in a delivery. *G2P2* - This option incorrectly counts the twin delivery as two separate parity events, whereas **parity is counted per pregnancy event** resulting in live birth or stillbirth beyond 20 weeks. - While G2 is correct (current pregnancy + previous pregnancy), P2 incorrectly implies two separate delivery events. *G3P2* - This option correctly identifies the parity as P2, but incorrectly states the gravida as G3. - **Gravida is 2** (current pregnancy + previous twin pregnancy), not 3. *G3P3* - This option is incorrect for both gravida and parity. - The patient has had **two pregnancies** (G2) and **one delivery event** (P1).

Question 1

At which gestational age is urinary retention first observed in pregnancy?

Accepted Answer

10 weeks

Answer

18 weeks

Answer

22 weeks

Answer

34 weeks

Question 2

Which of the following is a physiological change of pregnancy in the urinary bladder?

Accepted Answer

Pressure on bladder in late pregnancy

Answer

Stress incontinence

Answer

Edematous mucosa

Answer

Increased frequency at 14 weeks

Question 3

At 20 weeks of gestation amniotic fluid volume is?

Accepted Answer

200 ml

Answer

600 ml

Answer

400 ml

Answer

800 ml

Question 4

At which gestational week does the maximum volume of amniotic fluid occur?

Accepted Answer

36 weeks

Answer

32 weeks

Answer

34 weeks

Answer

40 weeks

Question 5

A female patient presents to you with six weeks of amenorrhea, associated with abdominal pain and vaginal bleeding with normal blood pressure. Investigations revealed beta-hCG to be 1400 mIU/mL. An ultrasound scan was done which showed a trilaminar endometrium with normal adnexa. What is the next best step in the management of this patient?

Accepted Answer

Repeat beta – hCG after 48 hours

Answer

Laparoscopy

Answer

Repeat ultrasound after 5 days

Answer

Measurement of serum progesterone

Question 6

A pregnant woman comes to the clinic. She has previously delivered twins. What is the correct representation of her obstetric score?

Accepted Answer

G2P1 (2 pregnancies, 1 delivery)

Answer

G3P1 (3 pregnancies, 1 delivery)

Answer

G3P2 (3 pregnancies, 2 deliveries)

Answer

G2P2 (2 pregnancies, 2 deliveries)

Question 7

A primigravida presents to you with anemia early in her pregnancy. She is 7 weeks pregnant as seen on ultrasound. Her hemoglobin level is 9 g/dL. When should the iron supplements be started for her?

Accepted Answer

Immediately upon diagnosis

Answer

8 to 10 weeks

Answer

After 14 weeks

Answer

After 20 weeks

Question 8

Nuchal translucency in USG can be detected at_____weeks of gestation.

Accepted Answer

11-13 weeks

Answer

18-20 weeks

Answer

8-10 weeks

Answer

20-22 weeks

Question 9

During which trimester is the double decidua sign typically observed?

Accepted Answer

First trimester

Answer

Early second trimester

Answer

Late second trimester

Answer

Third trimester

Question 10

A 36-week pregnant lady with previous twin delivery. What is the Obstetric score?

Accepted Answer

G2P1

Answer

G2P2

Answer

G3P2

Answer

G3P3

Prenatal Care — MCQs

Prenatal Care — MCQs

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