A 23-year-old woman comes to the emergency department because of a 5-day history of nausea and vomiting. There is no associated fever, abdominal pain, constipation, diarrhea, or dysuria. She is sexually active and uses condoms inconsistently. Her last menstrual period was 10 weeks ago. Her temperature is 37°C (98.6°F), pulse is 90/min, respirations are 18/min, and blood pressure is 110/70 mm Hg. There is no rebound tenderness or guarding. A urine pregnancy test is positive. Ultrasonography shows an intrauterine pregnancy consistent in size with an 8-week gestation. The hormone that was measured in this patient's urine to detect the pregnancy is also directly responsible for which of the following processes?
Q32
An 18-year-old G1P0 woman who is 10 weeks pregnant presents for her first prenatal visit. She reports nausea with occasional vomiting but denies bleeding, urinary symptoms, or abdominal pain. She just graduated high school and works at the local grocery store. She does not take any medications and has no known drug allergies. Physical examination is unremarkable. Initial laboratory studies reveal the following:
Serum:
Na+: 140 mEq/L
Cl-: 100 mEq/L
K+: 4.0 mEq/L
HCO3-: 24 mEq/L
BUN: 10 mg/dL
Glucose: 100 mg/dL
Creatinine: 1.0 mg/dL
Thyroid-stimulating hormone: 2.5 µU/mL
Ca2+: 9.5 mg/dL
AST: 25 U/L
ALT: 20 U/L
Leukocyte count: 10,000 cells/mm^3 with normal differential
Hemoglobin: 14 g/dL
Hematocrit: 42%
Platelet count: 200,000 /mm^3
Urine:
Epithelial cells: few
Glucose: negative
WBC: 20/hpf
Bacterial: > 100,000 cfu / E. coli pan-sensitive
What is the best next step in management?
Q33
A 5-year-old boy presents for a regularly scheduled check-up. The child is wheelchair bound due to lower extremity paralysis and suffers from urinary incontinence. At birth, it was noted that the child had lower limbs of disproportionately small size in relation to the rest of his body. Radiograph imaging at birth also revealed several abnormalities in the spine, pelvis, and lower limbs. Complete history and physical performed on the child's birth mother during her pregnancy would likely have revealed which of the following?
Q34
A 26-year-old primigravida woman presents to her obstetrician for her first prenatal visit. Her last menstrual cycle was 12 weeks ago. She denies tobacco, alcohol, illicit drug use, or history of sexually transmitted infections. She denies recent travel outside the country but is planning on visiting her family in Canada for Thanksgiving in 3 days. Her past medical and family history is unremarkable. Her temperature is 97.5°F (36.3°C), blood pressure is 119/76 mmHg, pulse is 90/min, and respirations are 20/min. BMI is 22 kg/m^2. Fetal pulse is 136/min. The patient's blood type is B-negative. Mumps and rubella titers are non-reactive. Which of the following is the most appropriate recommendation at this visit?
Q35
A 34-year-old primigravid woman at 8 weeks' gestation comes to the emergency department 4 hours after the onset of vaginal bleeding and crampy lower abdominal pain. She has passed multiple large and small blood clots. The vaginal bleeding and pain have decreased since their onset. Her temperature is 37°C (98.6°F), pulse is 98/min, and blood pressure is 112/76 mm Hg. Pelvic examination shows mild vaginal bleeding and a closed cervical os. An ultrasound of the pelvis shows minimal fluid in the endometrial cavity and no gestational sac. Which of the following is the most likely diagnosis?
Q36
A 30-year old G2P1 woman, currently at 38 weeks estimated gestational age, presents with contractions. She says that she did not have any prenatal care, because she does not have health insurance. Upon delivery, the infant appears jaundiced and has marked hepatosplenomegaly. Serum hemoglobin is 11.6 g/dL and serum bilirubin is 8 mg/dL. The direct and indirect Coombs tests are both positive. The mother has never had a blood transfusion. Her previous child was born healthy with no complications. Which of the following is most consistent with this neonate’s most likely condition?
Q37
A 23-year-old woman presents to the outpatient OB/GYN clinic as a new patient who wishes to begin contraception. She has no significant past medical history, family history, or social history. The review of systems is negative. Her vital signs are: blood pressure 118/78 mm Hg, pulse 73/min, and respiratory rate 16/min. She is afebrile. Physical examination is unremarkable. She has researched multiple different contraceptive methods, and wants to know which is the most efficacious. Which of the following treatments should be recommended?
Q38
A 34-year-old gravida 5, para 4 presents to the physician for prenatal care at 32 weeks of pregnancy. She comes from a rural region of Ethiopia and did not have appropriate prenatal care during previous pregnancies. She has no complaints of swelling, contractions, loss of fluid, or bleeding from the vagina. During her current pregnancy, she has received proper care and has completed the required laboratory and instrumental tests, which did not show any pathology. Her blood pressure is 130/70 mm Hg, heart rate is 77/min, respiratory rate is 15/min, and temperature is 36.6°C (97.8°F). Her examination is consistent with a normal 32-weeks’ gestation. The patient tells the physician that she is going to deliver her child at home, without any medical aid. The physician inquires about her tetanus vaccination status. The patient reports that she had tetanus 1 year after her first delivery at the age of 16, and it was managed appropriately. She had no tetanus vaccinations since then. Which of the following statements is true?
Q39
A 20-year-old woman presents with nausea, fatigue, and breast tenderness. She is sexually active with two partners and occasionally uses condoms during intercourse. A β-hCG urinary test is positive. A transvaginal ultrasound reveals an 8-week fetus in the uterine cavity. The patient is distressed by this news and requests an immediate abortion. Which of the following is the most appropriate step in management?
Q40
A 27-year-old G3P2002 presents to the clinic for follow up after her initial prenatal visit. Her last period was 8 weeks ago. Her medical history is notable for obesity, hypertension, type 2 diabetes, and eczema. Her current two children are healthy. Her current pregnancy is with a new partner after she separated from her previous partner. Her vaccinations are up to date since the delivery of her second child. Her temperature is 98°F (37°C), blood pressure is 110/60 mmHg, pulse is 85/min, and respirations are 18/min. Her physical exam is unremarkable. Laboratory results are shown below:
Hemoglobin: 14 g/dL
Hematocrit: 41%
Leukocyte count: 9,000/mm^3 with normal differential
Platelet count: 210,000/mm^3
Blood type: O
Rh status: Negative
Urine:
Epithelial cells: Rare
Glucose: Positive
WBC: 5/hpf
Bacterial: None
Rapid plasma reagin: Negative
Rubella titer: > 1:8
HIV-1/HIV-2 antibody screen: Negative
Gonorrhea and Chlamydia NAAT: negative
Pap smear: High-grade squamous intraepithelial lesion (HGSIL)
What is the best next step in management?
Prenatal Care US Medical PG Practice Questions and MCQs
Question 31: A 23-year-old woman comes to the emergency department because of a 5-day history of nausea and vomiting. There is no associated fever, abdominal pain, constipation, diarrhea, or dysuria. She is sexually active and uses condoms inconsistently. Her last menstrual period was 10 weeks ago. Her temperature is 37°C (98.6°F), pulse is 90/min, respirations are 18/min, and blood pressure is 110/70 mm Hg. There is no rebound tenderness or guarding. A urine pregnancy test is positive. Ultrasonography shows an intrauterine pregnancy consistent in size with an 8-week gestation. The hormone that was measured in this patient's urine to detect the pregnancy is also directly responsible for which of the following processes?
A. Hypertrophy of the uterine myometrium
B. Fetal angiogenesis
C. Maintenance of the corpus luteum (Correct Answer)
D. Inhibition of ovulation
E. Stimulation of uterine contractions at term
Explanation: ***Maintenance of the corpus luteum***
- The hormone measured in the urine pregnancy test is **human chorionic gonadotropin (hCG)**. hCG's primary role early in pregnancy is to **maintain the corpus luteum**, which in turn produces progesterone to support the uterine lining.
- The **corpus luteum** is essential for progesterone production until the placenta is sufficiently developed to take over this function, typically around 8-10 weeks gestation.
*Hypertrophy of the uterine myometrium*
- **Estrogen** and **progesterone** are primarily responsible for the hypertrophy and hyperplasia of the uterine myometrium during pregnancy.
- While hCG indirectly supports this by maintaining the corpus luteum (which produces estrogen and progesterone), it does not directly cause myometrial hypertrophy itself.
*Fetal angiogenesis*
- **Vascular endothelial growth factor (VEGF)** and **fibroblast growth factor (FGF)** are key factors directly involved in fetal angiogenesis (the formation of new blood vessels in the fetus).
- While proper placental function, supported by hCG, is critical for fetal growth, hCG itself is not the direct mediator of fetal angiogenesis.
*Inhibition of ovulation*
- High levels of **estrogen** and **progesterone** (produced by the corpus luteum, maintained by hCG) provide **negative feedback** to the hypothalamus and pituitary, thus inhibiting the release of GnRH, FSH, and LH, which prevents further ovulation.
- hCG itself does not directly inhibit ovulation; rather, it sets in motion the hormonal cascade that leads to its inhibition.
*Stimulation of uterine contractions at term*
- **Oxytocin** is the primary hormone responsible for stimulating uterine contractions, particularly at term, often in conjunction with prostaglandins.
- hCG levels peak early in pregnancy and then decline, and it plays no direct role in stimulating labor contractions.
Question 32: An 18-year-old G1P0 woman who is 10 weeks pregnant presents for her first prenatal visit. She reports nausea with occasional vomiting but denies bleeding, urinary symptoms, or abdominal pain. She just graduated high school and works at the local grocery store. She does not take any medications and has no known drug allergies. Physical examination is unremarkable. Initial laboratory studies reveal the following:
Serum:
Na+: 140 mEq/L
Cl-: 100 mEq/L
K+: 4.0 mEq/L
HCO3-: 24 mEq/L
BUN: 10 mg/dL
Glucose: 100 mg/dL
Creatinine: 1.0 mg/dL
Thyroid-stimulating hormone: 2.5 µU/mL
Ca2+: 9.5 mg/dL
AST: 25 U/L
ALT: 20 U/L
Leukocyte count: 10,000 cells/mm^3 with normal differential
Hemoglobin: 14 g/dL
Hematocrit: 42%
Platelet count: 200,000 /mm^3
Urine:
Epithelial cells: few
Glucose: negative
WBC: 20/hpf
Bacterial: > 100,000 cfu / E. coli pan-sensitive
What is the best next step in management?
A. Levofloxacin for three days
B. Nitrofurantoin for duration of pregnancy
C. Observation and treatment if symptoms develop
D. Observation and repeat cultures in one week
E. Nitrofurantoin for seven days (Correct Answer)
Explanation: ***Nitrofurantoin for seven days***
- The patient has **asymptomatic bacteriuria** (ABU) in pregnancy, indicated by the positive urine culture (>100,000 cfu/mL *E. coli*) without urinary symptoms.
- Timely treatment of ABU in pregnancy with an appropriate antibiotic like **nitrofurantoin** for 7 days is essential to prevent complications such as pyelonephritis and preterm birth.
*Levofloxacin for three days*
- **Fluoroquinolones** such as levofloxacin are generally **contraindicated in pregnancy** due to potential adverse effects on fetal cartilage development.
- A 3-day course is also typically too short for adequate treatment of ABU in pregnancy, where a 7-day course is usually recommended.
*Nitrofurantoin for duration of pregnancy*
- While nitrofurantoin is a safe and effective treatment for ABU in pregnancy, continuous treatment for the **entire duration of pregnancy** is typically reserved for women with recurrent UTIs or a history of pyelonephritis, not initial ABU.
- A 7-day course is sufficient for initial treatment of ABU.
*Observation and treatment if symptoms develop*
- **Asymptomatic bacteriuria in pregnancy** is a significant risk factor for developing symptomatic urinary tract infections, including pyelonephritis, which can lead to serious maternal and fetal complications.
- Therefore, ABU identified during pregnancy **must be treated**, even in the absence of symptoms, and observation is not appropriate.
*Observation and repeat cultures in one week*
- As with the previous option, ABU in pregnancy carries significant risks and requires **immediate antibiotic treatment**, not delayed observation.
- Waiting to repeat cultures simply prolongs the presence of bacteriuria, increasing the risk of ascending infection and complications.
Question 33: A 5-year-old boy presents for a regularly scheduled check-up. The child is wheelchair bound due to lower extremity paralysis and suffers from urinary incontinence. At birth, it was noted that the child had lower limbs of disproportionately small size in relation to the rest of his body. Radiograph imaging at birth also revealed several abnormalities in the spine, pelvis, and lower limbs. Complete history and physical performed on the child's birth mother during her pregnancy would likely have revealed which of the following?
A. Maternal use of nicotine
B. Maternal use of tetracyclines
C. Maternal hyperthyroidism
D. Maternal use of lithium
E. Uncontrolled maternal diabetes mellitus (Correct Answer)
Explanation: ***Uncontrolled maternal diabetes mellitus***
- **Maternal diabetes** is a significant risk factor for **caudal regression syndrome**, which presents with **lower limb paralysis**, **urinary incontinence**, and **spinal/pelvic abnormalities**.
- The combination of disproportionately small lower limbs and the associated neurological and skeletal issues strongly points to a congenital anomaly linked to **poor glycemic control** during pregnancy.
*Maternal use of nicotine*
- Maternal nicotine use is associated with a range of adverse pregnancy outcomes, including **low birth weight**, **premature birth**, and **respiratory problems**, but not typically caudal regression syndrome.
- While concerning, it does not directly explain the specific constellation of skeletal, neurological, and urological abnormalities described.
*Maternal use of tetracyclines*
- **Tetracycline exposure** during pregnancy can lead to **tooth discoloration** and **bone growth inhibition**, particularly in the developing fetus.
- It is not known to cause the severe spinal and lower limb malformations, paralysis, or urinary incontinence seen in this case.
*Maternal hyperthyroidism*
- Uncontrolled maternal hyperthyroidism can lead to complications such as **fetal tachycardia**, **goiter**, and **preterm birth**.
- It is not directly associated with congenital malformations like caudal regression syndrome that affect the lower spine and limbs.
*Maternal use of lithium*
- Maternal lithium use is most notably associated with an increased risk of **Ebstein's anomaly**, a congenital **heart defect**.
- It does not explain the specific musculoskeletal, neurological, and urological abnormalities presented in the case.
Question 34: A 26-year-old primigravida woman presents to her obstetrician for her first prenatal visit. Her last menstrual cycle was 12 weeks ago. She denies tobacco, alcohol, illicit drug use, or history of sexually transmitted infections. She denies recent travel outside the country but is planning on visiting her family in Canada for Thanksgiving in 3 days. Her past medical and family history is unremarkable. Her temperature is 97.5°F (36.3°C), blood pressure is 119/76 mmHg, pulse is 90/min, and respirations are 20/min. BMI is 22 kg/m^2. Fetal pulse is 136/min. The patient's blood type is B-negative. Mumps and rubella titers are non-reactive. Which of the following is the most appropriate recommendation at this visit?
A. Measles-mumps-rubella vaccination
B. Rh-D immunoglobulin
C. One hour glucose challenge
D. PCV23 vaccination
E. Influenza vaccination (Correct Answer)
Explanation: ***Influenza vaccination***
- The patient is in her **first trimester** and should receive an **inactivated influenza vaccine (IIV)** because she will be traveling during the flu season.
- The **Centers for Disease Control and Prevention (CDC)** recommends that all pregnant women receive the influenza vaccine, regardless of the trimester of pregnancy.
*Measles-mumps-rubella vaccination*
- The **MMR vaccine** is a **live attenuated vaccine** and is **contraindicated in pregnancy** due to the theoretical risk of congenital rubella syndrome.
- Since the patient's **rubella titers are non-reactive**, she should defer vaccination until **after delivery**.
*Rh-D immunoglobulin*
- **Rh-D immunoglobulin** is administered to Rh-negative mothers to prevent alloimmunization, but it is typically given at **28 weeks' gestation** and again postpartum if the baby is Rh-positive.
- This patient is only **12 weeks pregnant**, making prophylaxis unnecessary at this time.
*One hour glucose challenge*
- The **one-hour glucose challenge test** for **gestational diabetes mellitus** is routinely performed between **24 and 28 weeks' gestation**.
- Performing this test at **12 weeks' gestation** would be premature and not provide accurate results.
*PCV23 vaccination*
- The **pneumococcal polysaccharide vaccine (PPSV23)** is generally recommended for pregnant women only if they have risk factors like chronic medical conditions (e.g., asthma, diabetes, heart disease) or are immunocompromised.
- This patient has **no risk factors** indicating a need for **PCV23 vaccination** at this time.
Question 35: A 34-year-old primigravid woman at 8 weeks' gestation comes to the emergency department 4 hours after the onset of vaginal bleeding and crampy lower abdominal pain. She has passed multiple large and small blood clots. The vaginal bleeding and pain have decreased since their onset. Her temperature is 37°C (98.6°F), pulse is 98/min, and blood pressure is 112/76 mm Hg. Pelvic examination shows mild vaginal bleeding and a closed cervical os. An ultrasound of the pelvis shows minimal fluid in the endometrial cavity and no gestational sac. Which of the following is the most likely diagnosis?
A. Complete abortion (Correct Answer)
B. Incomplete abortion
C. Threatened abortion
D. Missed abortion
E. Inevitable abortion
Explanation: ***Complete abortion***
- The patient's history of **vaginal bleeding**, **crampy abdominal pain**, passage of **blood clots**, and subsequent *decrease* in bleeding and pain are classic signs.
- A **closed cervical os** and **empty endometrial cavity** on ultrasound confirm that all products of conception have been expelled.
*Incomplete abortion*
- This would involve the *partial expulsion* of products of conception, meaning some tissue would still be retained in the uterus.
- The ultrasound would show **retained products of conception** within the endometrial cavity, and the os might be open.
*Threatened abortion*
- Characterized by **vaginal bleeding** with a **closed cervical os** and a *viable pregnancy* (gestational sac with or without fetal pole) on ultrasound.
- There would typically be *no passage of tissue* or clots, and the pregnancy would still be ongoing.
*Missed abortion*
- Involves a **non-viable pregnancy** where the embryo or fetus has died but there is *no expulsion of tissue* or significant bleeding.
- The ultrasound would show a gestational sac or fetus without cardiac activity, and the cervical os would be closed.
*Inevitable abortion*
- Presents with **vaginal bleeding** and an **open cervical os**, indicating that abortion is in progress and cannot be stopped.
- While there is bleeding and pain, the key differentiating factor from a complete abortion is the *open cervical os* and often *ongoing expulsion* of tissue.
Question 36: A 30-year old G2P1 woman, currently at 38 weeks estimated gestational age, presents with contractions. She says that she did not have any prenatal care, because she does not have health insurance. Upon delivery, the infant appears jaundiced and has marked hepatosplenomegaly. Serum hemoglobin is 11.6 g/dL and serum bilirubin is 8 mg/dL. The direct and indirect Coombs tests are both positive. The mother has never had a blood transfusion. Her previous child was born healthy with no complications. Which of the following is most consistent with this neonate’s most likely condition?
A. The neonate developed IgM autoantibodies to its own red blood cells
B. This condition could have been prevented with the administration of glucocorticoids
C. Vitamin K deficiency has led to hemolytic anemia
D. The mother generated IgM antibodies against fetal red blood cells
E. The mother generated IgG antibodies against fetal red blood cells (Correct Answer)
Explanation: ***The mother generated IgG antibodies against fetal red blood cells***
- The positive direct and indirect **Coombs test** in a jaundiced neonate with **hepatosplenomegaly** and **anemia** (elevated bilirubin, normal hemoglobin for full term is 14-24 g/dL, 11.6 is borderline to low) suggests **hemolytic disease of the newborn (HDN)**. This is typically caused by maternal **IgG antibodies** crossing the placenta and targeting fetal red blood cells, as IgG is the only antibody class capable of crossing the placenta.
- The history of a healthy first child suggests that the mother was likely sensitized during the first pregnancy, and in the second pregnancy, a more robust immune response led to the production of these IgG antibodies.
*The neonate developed IgM autoantibodies to its own red blood cells*
- **IgM antibodies** do not cross the placenta, therefore any hemolytic disease caused by IgM from the mother would not affect the fetus.
- While autoimmune hemolytic anemia can occur in neonates, the positive indirect Coombs test (detecting antibodies in the mother's serum) points more strongly to maternal antibodies.
*This condition could have been prevented with the administration of glucocorticoids*
- Glucocorticoids are used to enhance fetal **lung maturity** in cases of preterm labor, and are not indicated for the prevention or treatment of hemolytic disease of the newborn.
- Prevention of HDN due to Rh incompatibility typically involves the administration of **RhoGAM (anti-D immunoglobulin)** to Rh-negative mothers.
*Vitamin K deficiency has led to hemolytic anemia*
- **Vitamin K deficiency** in neonates primarily causes **coagulopathy** (bleeding disorders) due to impaired synthesis of clotting factors.
- It does not cause hemolytic anemia, hepatosplenomegaly, or positive Coombs tests.
*The mother generated IgM antibodies against fetal red blood cells*
- **IgM antibodies** are **pentameric** and too large to cross the **placental barrier**.
- Therefore, maternal IgM antibodies cannot cause hemolytic disease of the newborn.
Question 37: A 23-year-old woman presents to the outpatient OB/GYN clinic as a new patient who wishes to begin contraception. She has no significant past medical history, family history, or social history. The review of systems is negative. Her vital signs are: blood pressure 118/78 mm Hg, pulse 73/min, and respiratory rate 16/min. She is afebrile. Physical examination is unremarkable. She has researched multiple different contraceptive methods, and wants to know which is the most efficacious. Which of the following treatments should be recommended?
A. Withdrawal
B. Male condoms
C. Intrauterine device (IUD) (Correct Answer)
D. Diaphragm with spermicide
E. NuvaRing
Explanation: ***Intrauterine device (IUD)***
- **IUDs** are among the most **efficacious** reversible contraceptive methods, with typical use pregnancy rates less than 1% per year.
- They offer long-term contraception (3-10 years depending on the type) and do not require daily adherence, which contributes to their high effectiveness.
*Withdrawal*
- The withdrawal method is **highly user-dependent** and has a typical failure rate of about 20-22% per year.
- Its effectiveness relies completely on perfect timing and self-control, making it one of the **least efficacious** methods.
*Male condoms*
- While effective when used perfectly, **male condoms** have a typical use failure rate of about 13-18% per year.
- Their efficacy is significantly reduced by inconsistent or incorrect use.
*Diaphragm with spermicide*
- The **diaphragm with spermicide** has a typical use failure rate of about 12-17% per year, similar to condoms.
- Its effectiveness depends on proper fit, correct insertion before intercourse, and consistent use of spermicide.
*NuvaRing*
- The **NuvaRing**, an estrogen-progestin ring, has a typical use failure rate of about 7-9% per year.
- While more effective than barrier methods, its efficacy is still lower than that of IUDs or implants, often due to user adherence issues like forgetting to replace the ring.
Question 38: A 34-year-old gravida 5, para 4 presents to the physician for prenatal care at 32 weeks of pregnancy. She comes from a rural region of Ethiopia and did not have appropriate prenatal care during previous pregnancies. She has no complaints of swelling, contractions, loss of fluid, or bleeding from the vagina. During her current pregnancy, she has received proper care and has completed the required laboratory and instrumental tests, which did not show any pathology. Her blood pressure is 130/70 mm Hg, heart rate is 77/min, respiratory rate is 15/min, and temperature is 36.6°C (97.8°F). Her examination is consistent with a normal 32-weeks’ gestation. The patient tells the physician that she is going to deliver her child at home, without any medical aid. The physician inquires about her tetanus vaccination status. The patient reports that she had tetanus 1 year after her first delivery at the age of 16, and it was managed appropriately. She had no tetanus vaccinations since then. Which of the following statements is true?
A. The patient should receive at least 2 doses of tetanus toxoid within the 4-week interval to ensure that she and her baby will both have immunity against tetanus. (Correct Answer)
B. The antibodies from tetanus immune globulin vaccine, if given to a pregnant woman, would not cross the placental barrier.
C. Even if the patient receives appropriate tetanus vaccination, it will be necessary to administer toxoid to the newborn.
D. The patient is protected against tetanus due to her past medical history, so only the child is at risk of developing tetanus after an out-of-hospital delivery.
E. The patient does not need vaccination because she has developed natural immunity against tetanus and will pass it to her baby.
Explanation: ***The patient should receive at least 2 doses of tetanus toxoid within the 4-week interval to ensure that she and her baby will both have immunity against tetanus.***
- For unvaccinated or incompletely vaccinated pregnant women, the **CDC recommends a series of at least two doses of tetanus toxoid-containing vaccine (Tdap or Td)**. These doses should be given at least 4 weeks apart to provide sufficient maternal protection and ensure the transfer of **passive immunity** to the newborn.
- This regimen ensures that both the mother and the baby receive protection against tetanus, particularly crucial in settings of **home delivery without medical aid** where the risk of exposure is higher.
*The antibodies from tetanus immune globulin vaccine, if given to a pregnant woman, would not cross the placental barrier.*
- **Tetanus immune globulin (TIG)** provides immediate, but short-lived, passive immunity and its antibodies **do cross the placental barrier**.
- However, TIG is not routinely used for prenatal vaccination; **tetanus toxoid (Tdap/Td)** is administered to stimulate active antibody production in the mother and subsequent passive transfer to the fetus.
*Even if the patient receives appropriate tetanus vaccination, it will be necessary to administer toxoid to the newborn.*
- If the mother receives **appropriate tetanus vaccination (Tdap/Td) during pregnancy**, sufficient **maternal antibodies are transferred to the newborn** via the placenta, protecting the infant during the first few months of life.
- Therefore, the newborn typically does not require immediate tetanus toxoid administration at birth if the mother was adequately vaccinated during pregnancy; their primary series of vaccinations begins later.
*The patient is protected against tetanus due to her past medical history, so only the child is at risk of developing tetanus after an out-of-hospital delivery.*
- While prior tetanus infection can provide some immunity, it is **not always long-lasting or fully protective**, and it does not guarantee protection for future pregnancies or the newborn.
- Therefore, the mother should still be vaccinated to ensure both her and the baby's protection, especially when delivering in a high-risk environment.
*The patient does not need vaccination because she has developed natural immunity against tetanus and will pass it to her baby.*
- **Natural immunity to tetanus following infection is often insufficient and may not be long-lasting**, unlike immunity conferred by vaccination.
- Therefore, vaccination is still recommended to ensure adequate immunity for the mother and to facilitate the transfer of protective antibodies to the baby.
Question 39: A 20-year-old woman presents with nausea, fatigue, and breast tenderness. She is sexually active with two partners and occasionally uses condoms during intercourse. A β-hCG urinary test is positive. A transvaginal ultrasound reveals an 8-week fetus in the uterine cavity. The patient is distressed by this news and requests an immediate abortion. Which of the following is the most appropriate step in management?
A. Explain the risk and potential harmful effects of the procedure. (Correct Answer)
B. Ask the patient to reconsider and refer her to a social worker.
C. Ask the patient to obtain consent from legal guardians.
D. Ask the patient to obtain consent from the baby’s father.
E. Conduct a psychiatric evaluation for mental competence.
Explanation: ***Explain the risk and potential harmful effects of the procedure.***
- It is crucial to **inform the patient fully** about the medical procedure, including its risks and benefits, as part of the **informed consent** process.
- This ensures the patient makes an autonomous, well-considered decision, which is a fundamental ethical principle in medicine.
*Ask the patient to reconsider and refer her to a social worker.*
- While it's important to ensure the patient has considered all aspects, **directly asking the patient to reconsider** can be perceived as coercive and may undermine her autonomy.
- Referring to a social worker might be appropriate if the patient expresses uncertainty or needs support, but it should not be a replacement for proper medical counseling about the procedure itself.
*Ask the patient to obtain consent from legal guardians.*
- At 20 years old, the patient is an **adult** and legally capable of making her own medical decisions, including consent for abortion.
- Forcing her to obtain consent from legal guardians would infringe upon her **autonomy and legal rights**.
*Ask the patient to obtain consent from the baby’s father.*
- In most jurisdictions, a woman's decision to have an abortion is **her legal right**, and the consent of the father is **not required**.
- Requiring paternal consent would violate her **personal autonomy** and could create unnecessary barriers to care.
*Conduct a psychiatric evaluation for mental competence.*
- There is **no indication** in the patient's presentation (nausea, fatigue, breast tenderness, distress about pregnancy) that suggests she lacks the mental competence to make her own medical decisions.
- Requesting a psychiatric evaluation without clinical grounds would be **unethical and inappropriate**.
Question 40: A 27-year-old G3P2002 presents to the clinic for follow up after her initial prenatal visit. Her last period was 8 weeks ago. Her medical history is notable for obesity, hypertension, type 2 diabetes, and eczema. Her current two children are healthy. Her current pregnancy is with a new partner after she separated from her previous partner. Her vaccinations are up to date since the delivery of her second child. Her temperature is 98°F (37°C), blood pressure is 110/60 mmHg, pulse is 85/min, and respirations are 18/min. Her physical exam is unremarkable. Laboratory results are shown below:
Hemoglobin: 14 g/dL
Hematocrit: 41%
Leukocyte count: 9,000/mm^3 with normal differential
Platelet count: 210,000/mm^3
Blood type: O
Rh status: Negative
Urine:
Epithelial cells: Rare
Glucose: Positive
WBC: 5/hpf
Bacterial: None
Rapid plasma reagin: Negative
Rubella titer: > 1:8
HIV-1/HIV-2 antibody screen: Negative
Gonorrhea and Chlamydia NAAT: negative
Pap smear: High-grade squamous intraepithelial lesion (HGSIL)
What is the best next step in management?
A. Repeat Pap smear
B. Colposcopy and biopsy now (Correct Answer)
C. Colposcopy and biopsy after delivery
D. Loop electrosurgical excision procedure (LEEP)
E. Cryosurgical excision
Explanation: **Colposcopy and biopsy now**
- A finding of **high-grade squamous intraepithelial lesion (HGSIL)** during pregnancy warrants immediate **colposcopy** to evaluate the extent of the cervical abnormality.
- **Biopsy** should be performed if indicated during colposcopy to rule out **invasive cancer**, as delaying diagnosis could worsen prognosis.
*Repeat Pap smear*
- Repeating the Pap smear is not appropriate because a **HGSIL** result indicates a significant abnormality requiring further diagnostic evaluation, not just re-screening.
- Delaying definitive diagnosis could lead to progression of a high-grade lesion or missing an **invasive cancer**.
*Colposcopy and biopsy after delivery*
- While some procedures can be deferred, delaying colposcopy and biopsy for a **HGSIL** until after delivery is not recommended due to the risk of **progression to invasive cancer** during pregnancy.
- Close monitoring with colposcopy and biopsy for suspected high-grade lesions or cancer is **safe** during pregnancy.
*Loop electrosurgical excision procedure (LEEP)*
- **LEEP** is an excisional procedure that removes cervical tissue and is typically used for diagnosed **cervical intraepithelial neoplasia (CIN) 2/3 or AIS**, not as the initial diagnostic step for HGSIL during pregnancy.
- It carries a risk of obstetric complications, such as **preterm delivery**, and is generally deferred until after pregnancy unless invasive cancer is suspected.
*Cryosurgical excision*
- **Cryosurgery** is an ablative treatment used for low-grade cervical lesions (CIN 1) or in some cases of CIN 2, but it is not indicated for **HGSIL** as an initial step, especially during pregnancy where tissue diagnosis is crucial.
- It is an ablative treatment that destroys tissue without obtaining a specimen for histopathological evaluation, which is necessary to rule out **invasive malignancy**.