A 38-year-old woman, gravida 4, para 3, at 20 weeks' gestation comes to the physician for a prenatal care visit. She used fertility enhancing treatment for her current pregnancy. Her other children were born before 37 weeks' gestation. She is 170 cm (5 ft 7 in) tall and weighs 82 kg (180 lb); BMI is 28.4 kg/m2. Her vital signs are within normal limits. The abdomen is nontender, and no contractions are felt. Ultrasonography shows a cervical length of 22 mm and a fetal heart rate of 140/min. Which of the following is the most likely diagnosis?
Q22
A 42-year-old, G3P2012 woman comes to the clinic complaining of painful menstruation for the past 4 months. She is also using more tampons compared to prior periods. She is concerned as her close friend was just diagnosed with endometrial cancer. Prior to these symptoms, her menstrual cycle was regular (every 28 days) and without pain. She denies abnormal uterine bleeding, abnormal discharge, past sexually transmitted diseases, or spotting. A bimanual pelvic examination is unremarkable except for a mobile, diffusely enlarged, globular uterus. What is the most likely explanation for this patient’s symptoms?
Q23
Five minutes after initiating a change of position and oxygen inhalation, the oxytocin infusion is discontinued. A repeat CTG that is done 10 minutes later shows recurrent variable decelerations and a total of 3 uterine contractions in 10 minutes. Which of the following is the most appropriate next step in management?
Q24
A 22-year-old primigravid woman at 41 weeks' gestation is admitted to the hospital in active labor. Pregnancy has been uncomplicated. She has asthma treated with theophylline and inhaled corticosteroids. She has had 2 surgeries in the past to repair multiple lower limb and pelvis fractures that were the result of a car accident. She is otherwise healthy. Her temperature is 37.2°C (99°F) and blood pressure is 108/70 mm Hg. Examination shows the cervix is 100% effaced and 10 cm dilated; the vertex is at -4 station, with the occiput in the anterior position. Uterine activity is measured at 275 MVUs. Maternal pushing occurs during the contractions. Fetal heart tracing is 166/min and reactive with no decelerations. Epidural anesthesia is initiated for pain relief. After 4 hours of pushing, the vertex is found to be at -4 station, with increasing strength and rate of uterine contractions; fetal heart tracing shows late decelerations. Which of the following is the most likely cause of this patient's prolonged labor?
Q25
A 26-year-old primigravid woman at 39 weeks' gestation is admitted to the hospital in active labor. Pregnancy was complicated by mild oligohydramnios detected a week ago, which was managed with hydration. Her pulse is 92/min, respirations are 18/min, and blood pressure is 134/76 mm Hg. Pelvic examination shows 100% cervical effacement and 10 cm cervical dilation; the vertex is at 0 station. Cardiotocography is shown. Which of the following is the most appropriate next step in management?
Q26
A 42-year-old woman, gravida 5, para 5, comes to the physician because of a 6-month history of occasional involuntary urine loss that is exacerbated by coughing, sneezing, and laughing. She has no urgency or dysuria. Physical examination shows normal appearing external genitalia, vagina, and cervix. There is a loss of urine with the Valsalva maneuver. The physician recommends doing Kegel exercises. Which of the following muscles is strengthened by these exercises?
Q27
A 57-year-old woman comes to the physician because of several years of recurrent pelvic pain and constipation. She has increased fecal urgency and a sensation of incomplete evacuation following defecation. She has had no problems associated with urination. Her last menstrual period was 6 years ago. She has had three uncomplicated vaginal deliveries. Physical examination shows normal external genitalia. Speculum examination of the vagina and the cervix shows bulging of the posterior vaginal wall during Valsalva maneuver. Weakness of which of the following structures is the most likely cause of this patient's symptoms?
Q28
A 30-year-old woman, gravida 2 para 1, at 39 weeks gestation presents to the hospital with painful contractions and a rupture of membranes. She reports that the contractions started a couple hours ago and are now occurring every 4 minutes. She is accompanied by her husband who states, “her water broke an hour ago before we left for the hospital." The patient denies vaginal bleeding, and fetal movements are normal. The patient has attended all her pre-natal visits without pregnancy complications. She has no chronic medical conditions and takes only pre-natal vitamins. Her blood pressure is 110/75 mm Hg and pulse is 82/min. A fetal heart rate tracing shows a pulse of 140/min with moderate variability and no decelerations. Cervical examination reveals a cervix that is 7 cm dilated and 100% effaced with the fetal head at -1 station. The patient forgoes epidural anesthesia. During which of the following scenarios should a cesarean delivery be considered for this patient?
Q29
A 70-year-old woman, gravida 5, para 5, comes to the physician for the evaluation of sensation of vaginal fullness for the last six months. During this period, she has had lower back and pelvic pain that is worse with prolonged standing or walking. The patient underwent a hysterectomy at the age of 35 years because of severe dysmenorrhea. She has type 2 diabetes mellitus and hypercholesterolemia. Medications include metformin and atorvastatin. Vital signs are within normal limits. Pelvic examination elicits a feeling of pressure on the perineum. Pelvic floor muscle and anal sphincter tone are decreased. Pelvic examination shows protrusion of posterior vaginal wall with Valsalva maneuver and vaginal discharge. Which of the following is the most likely diagnosis?
Q30
A clinical diagnosis of abruptio placentae is suspected. Which of the following is the most appropriate next step in the management of this patient?
Labor Complications US Medical PG Practice Questions and MCQs
Question 21: A 38-year-old woman, gravida 4, para 3, at 20 weeks' gestation comes to the physician for a prenatal care visit. She used fertility enhancing treatment for her current pregnancy. Her other children were born before 37 weeks' gestation. She is 170 cm (5 ft 7 in) tall and weighs 82 kg (180 lb); BMI is 28.4 kg/m2. Her vital signs are within normal limits. The abdomen is nontender, and no contractions are felt. Ultrasonography shows a cervical length of 22 mm and a fetal heart rate of 140/min. Which of the following is the most likely diagnosis?
A. Placental insufficiency
B. Bicornuate uterus
C. Diethylstilbestrol exposure
D. Cephalopelvic disproportion
E. Cervical insufficiency (Correct Answer)
Explanation: ***Cervical insufficiency***
- A **short cervical length** (22 mm at 20 weeks) in a woman with a history of **multiple preterm births (G4P3 before 37 weeks)** is highly indicative of cervical insufficiency, where the cervix prematurely shortens and dilates.
- **Fertility-enhancing treatments** are an additional risk factor, as they often involve manipulations that can weaken the cervix or lead to multiple gestations, further stressing the cervix.
*Placental insufficiency*
- This condition is characterized by **fetal growth restriction** or **fetal distress** due to inadequate nutrient and oxygen supply from the placenta.
- The presented information primarily points to cervical changes, not direct evidence of placental dysfunction affecting fetal growth or well-being (e.g., normal fetal heart rate, no mention of FGR).
*Bicornuate uterus*
- A **bicornuate uterus** is a congenital uterine anomaly that can increase the risk of preterm birth due to a smaller uterine cavity or abnormal uterine contractions.
- However, while it can cause preterm labor, the primary finding here is a very short cervix, suggesting a cervical rather than uterine structural issue as the immediate diagnosis.
*Diethylstilbestrol exposure*
- **Diethylstilbestrol (DES) exposure** *in utero* can lead to reproductive tract abnormalities, including an increased risk of cervical incompetence and preterm birth.
- This diagnosis would require a history of maternal DES exposure during her own *in utero* development, which is not mentioned in the patient's history.
*Cephalopelvic disproportion*
- **Cephalopelvic disproportion (CPD)** is a mismatch between the size of the fetal head and the maternal pelvis, making vaginal delivery difficult or impossible.
- This condition is typically diagnosed later in pregnancy or during labor and is not related to cervical shortening at 20 weeks' gestation or a history of preterm births.
Question 22: A 42-year-old, G3P2012 woman comes to the clinic complaining of painful menstruation for the past 4 months. She is also using more tampons compared to prior periods. She is concerned as her close friend was just diagnosed with endometrial cancer. Prior to these symptoms, her menstrual cycle was regular (every 28 days) and without pain. She denies abnormal uterine bleeding, abnormal discharge, past sexually transmitted diseases, or spotting. A bimanual pelvic examination is unremarkable except for a mobile, diffusely enlarged, globular uterus. What is the most likely explanation for this patient’s symptoms?
A. Non-neoplastic endometrial tissue outside of the endometrial cavity
B. Collection of endometrial tissue protruding into the uterine cavity
C. Benign smooth muscle tumor within the uterine wall
D. Invasion of endometrial glands into the myometrium (Correct Answer)
E. Abnormal endometrial gland proliferation at the endometrium
Explanation: ***Invasion of endometrial glands into the myometrium***
- This describes **adenomyosis**, a condition characterized by the presence of **endometrial glands and stroma within the myometrium**.
- It typically presents in multiparous women in their 40s with **dysmenorrhea** (painful menstruation) and **menorrhagia** (heavy bleeding), and a **diffusely enlarged, globular uterus**, all of which are consistent with the patient's symptoms.
*Non-neoplastic endometrial tissue outside of the endometrial cavity*
- This refers to **endometriosis**, where endometrial tissue grows outside the uterus.
- While it causes **dysmenorrhea**, it usually does not lead to a diffusely enlarged uterus and is more commonly associated with chronic pelvic pain or infertility rather than just heavy menstrual bleeding.
*Collection of endometrial tissue protruding into the uterine cavity*
- This describes an **endometrial polyp**.
- While polyps can cause **menorrhagia** or intermenstrual bleeding, they typically do not cause the degree of dysmenorrhea described or a diffusely enlarged, globular uterus.
*Benign smooth muscle tumor within the uterine wall*
- This is a **leiomyoma (fibroid)**, which is a common benign uterine tumor.
- Fibroids can cause **menorrhagia** and an enlarged uterus, but an enlarged uterus due to fibroids is usually described as **irregularly enlarged or nodular**, not diffusely enlarged and globular as described in this case, and they do not always cause severe dysmenorrhea.
*Abnormal endometrial gland proliferation at the endometrium*
- This describes **endometrial hyperplasia**, which is a proliferation of the endometrial glands.
- It can cause **abnormal uterine bleeding**, but typically presents as irregular or heavy bleeding (metrorrhagia or menorrhagia) and is not usually associated with severe dysmenorrhea or a diffusely enlarged, globular uterus.
Question 23: Five minutes after initiating a change of position and oxygen inhalation, the oxytocin infusion is discontinued. A repeat CTG that is done 10 minutes later shows recurrent variable decelerations and a total of 3 uterine contractions in 10 minutes. Which of the following is the most appropriate next step in management?
A. Restart oxytocin infusion
B. Emergent Cesarean section
C. Administer terbutaline
D. Monitor without intervention
E. Amnioinfusion (Correct Answer)
Explanation: ***Amnioinfusion***
- **Recurrent variable decelerations** persisting after discontinuing oxytocin and changing maternal position often indicate **cord compression**, which can be relieved by amnioinfusion.
- Adding fluid to the amniotic cavity **cushions the umbilical cord**, reducing compression during uterine contractions.
*Restart oxytocin infusion*
- Reinitiating oxytocin would likely **worsen the recurrent variable decelerations** by increasing uterine contraction frequency and intensity, thereby exacerbating cord compression.
- The goal is to alleviate fetal distress, not to intensify uterine activity that is already causing issues.
*Emergent Cesarean section*
- While an emergent Cesarean section is indicated for **unresolved fetal distress**, it's usually considered after less invasive measures, such as amnioinfusion, have failed.
- There is still an opportunity for a simpler intervention to resolve the issue before resorting to surgery.
*Administer terbutaline*
- Terbutaline is a **tocolytic agent** used to reduce uterine contractions, which can be helpful in cases of tachysystole or hyperstimulation.
- In this scenario, the contraction frequency is low (3 in 10 minutes), so reducing contractions is not the primary aim; rather, the focus is on resolving the cord compression causing decelerations.
*Monitor without intervention*
- **Recurrent variable decelerations** are an concerning sign of **fetal distress** and require intervention to prevent potential harm to the fetus.
- Simply monitoring without intervention would be inappropriate and could lead to worsening fetal hypoxemia and acidosis.
Question 24: A 22-year-old primigravid woman at 41 weeks' gestation is admitted to the hospital in active labor. Pregnancy has been uncomplicated. She has asthma treated with theophylline and inhaled corticosteroids. She has had 2 surgeries in the past to repair multiple lower limb and pelvis fractures that were the result of a car accident. She is otherwise healthy. Her temperature is 37.2°C (99°F) and blood pressure is 108/70 mm Hg. Examination shows the cervix is 100% effaced and 10 cm dilated; the vertex is at -4 station, with the occiput in the anterior position. Uterine activity is measured at 275 MVUs. Maternal pushing occurs during the contractions. Fetal heart tracing is 166/min and reactive with no decelerations. Epidural anesthesia is initiated for pain relief. After 4 hours of pushing, the vertex is found to be at -4 station, with increasing strength and rate of uterine contractions; fetal heart tracing shows late decelerations. Which of the following is the most likely cause of this patient's prolonged labor?
A. Deep transverse arrest
B. Insufficient uterine contraction
C. Epidural anesthesia
D. Cephalopelvic disproportion (Correct Answer)
E. Inefficient maternal pushing
Explanation: ***Cephalopelvic disproportion***
- The history of **multiple lower limb and pelvis fractures** from a car accident suggests a high likelihood of a **contracted or abnormally shaped pelvis**. This can lead to **cephalopelvic disproportion (CPD)**, where the fetal head cannot fit through the maternal pelvis despite adequate uterine contractions (275 MVUs).
- The combination of **prolonged labor** (4 hours of pushing with no descent), **vertex at -4 station** even after full dilation, increasing contraction strength, and new **late decelerations** (indicating fetal distress due to impaired oxygenation from prolonged compression) points towards an obstruction.
*Deep transverse arrest*
- This occurs when the fetal head rotates into the transverse diameter of the pelvis and fails to rotate anteriorly. While it causes **arrest of descent and dilation**, the primary issue is **malposition**, not a fundamental size mismatch.
- The occiput is described as in the **anterior position**, which does not immediately suggest deep transverse arrest.
*Insufficient uterine contraction*
- The uterine activity is measured at **275 MVUs**, which indicates **adequate contraction strength**. Insufficient contractions would typically be below 200 MVUs.
- While weak contractions can cause prolonged labor, the current uterine activity suggests this is not the primary problem.
*Epidural anesthesia*
- Epidural anesthesia can sometimes prolong the second stage of labor by reducing the urge to push or temporarily decreasing the effectiveness of pushing efforts. However, the patient's **strong uterine activity (275 MVUs)** and previous **pelvic fractures** make a mechanical obstruction (CPD) a more specific and likely cause of arrest in this scenario.
- Furthermore, the vertex remaining at -4 station for 4 hours despite strong contractions points to a physical barrier rather than just altered pushing dynamics.
*Inefficient maternal pushing*
- While inefficient maternal pushing can contribute to prolonged labor, the fetus remaining at -4 station for 4 hours with **strong uterine contractions (275 MVUs)** indicates that the issue is likely beyond just inadequate pushing efforts.
- The historical detail of **pelvic fractures** points more strongly to an anatomical obstruction rather than simply ineffective maternal exertion.
Question 25: A 26-year-old primigravid woman at 39 weeks' gestation is admitted to the hospital in active labor. Pregnancy was complicated by mild oligohydramnios detected a week ago, which was managed with hydration. Her pulse is 92/min, respirations are 18/min, and blood pressure is 134/76 mm Hg. Pelvic examination shows 100% cervical effacement and 10 cm cervical dilation; the vertex is at 0 station. Cardiotocography is shown. Which of the following is the most appropriate next step in management?
A. Maternal repositioning and oxygen administration (Correct Answer)
B. Emergent cesarean section
C. Elevation of the fetal head
D. Reassurance
E. Rapid amnioinfusion
Explanation: ***Maternal repositioning and oxygen administration***
- The cardiotocography shows **variable decelerations**, which are characterized by an abrupt decrease in fetal heart rate, often U, V, or W shaped, and not consistently related to contractions.
- Initial management for variable decelerations, common in cases of **oligohydramnios**, involves conservative measures like **maternal repositioning** (e.g., left lateral, right lateral, hands and knees) to relieve umbilical cord compression and administering **oxygen** to improve fetal oxygenation.
*Emergent cesarean section*
- While severe, unremitting variable decelerations unresponsive to conservative measures may warrant a cesarean section, the current tracing does not indicate an **immediate obstetric emergency** requiring such an invasive procedure as the first step.
- An emergent cesarean section is reserved for situations of **persistent non-reassuring fetal status** despite intervention.
*Elevation of the fetal head*
- Elevating the fetal head is typically done to **relieve umbilical cord prolapse** during a vaginal examination, a condition that might present with sudden, profound decelerations or bradycardia, which is not clearly depicted as the primary issue here.
- This maneuver is an intervention for a specific obstetric emergency and does not address the underlying pathophysiology of variable decelerations due to cord compression.
*Reassurance*
- The presence of **variable decelerations** indicates **umbilical cord compression** and potential fetal compromise, requiring active intervention rather than passive reassurance.
- Reassurance alone is insufficient and inappropriate when there are signs of **fetal distress** on the cardiotocograph.
*Rapid amnioinfusion*
- **Amnioinfusion** can be considered for **recurrent variable decelerations** due to oligohydramnios that are unresponsive to maternal repositioning and oxygen.
- It is generally not the *first* step, as less invasive measures should be attempted first. Moreover, rapid amnioinfusion carries its own risks and should be carefully considered.
Question 26: A 42-year-old woman, gravida 5, para 5, comes to the physician because of a 6-month history of occasional involuntary urine loss that is exacerbated by coughing, sneezing, and laughing. She has no urgency or dysuria. Physical examination shows normal appearing external genitalia, vagina, and cervix. There is a loss of urine with the Valsalva maneuver. The physician recommends doing Kegel exercises. Which of the following muscles is strengthened by these exercises?
A. Sphincter urethrae
B. Compressor urethrae
C. Levator ani (Correct Answer)
D. Deep transverse perineal muscles
E. Internal urethral sphincter
Explanation: ***Levator ani***
- **Kegel exercises** primarily target and strengthen the **levator ani muscles**, which are a crucial component of the **pelvic floor**.
- A strong pelvic floor, particularly the levator ani, provides support to the urethra and bladder neck, preventing **stress urinary incontinence** during increased intra-abdominal pressure.
*Sphincter urethrae*
- The **sphincter urethrae** (external urethral sphincter) contributes to voluntary urine control but is not the primary muscle strengthened by Kegel exercises; it works synergistically with the levator ani.
- While it helps in continence, its strengthening is typically secondary to exercises targeting the broader pelvic floor musculature.
*Compressor urethrae*
- The **compressor urethrae** is a part of the external urethral sphincter complex in females but is a smaller, accessory muscle.
- Its specific strengthening is not the main goal or direct outcome of general Kegel exercises, which focus on the larger pelvic floor muscles.
*Deep transverse perineal muscles*
- These muscles form part of the **urogenital diaphragm** but are not the principal muscles targeted by Kegel exercises for stress incontinence.
- They provide support to the perineum but have a less direct role in urethral continence compared to the levator ani.
*Internal urethral sphincter*
- The **internal urethral sphincter** is composed mainly of **smooth muscle** and is under **involuntary control** by the autonomic nervous system.
- Therefore, it cannot be directly strengthened through voluntary exercises like Kegel exercises.
Question 27: A 57-year-old woman comes to the physician because of several years of recurrent pelvic pain and constipation. She has increased fecal urgency and a sensation of incomplete evacuation following defecation. She has had no problems associated with urination. Her last menstrual period was 6 years ago. She has had three uncomplicated vaginal deliveries. Physical examination shows normal external genitalia. Speculum examination of the vagina and the cervix shows bulging of the posterior vaginal wall during Valsalva maneuver. Weakness of which of the following structures is the most likely cause of this patient's symptoms?
A. Cardinal ligament
B. Uterosacral ligament
C. Bulbospongiosus muscle
D. Pubocervical fascia
E. Rectovaginal fascia (Correct Answer)
Explanation: ***Rectovaginal fascia***
- The patient's symptoms of recurrent pelvic pain, constipation, increased fecal urgency, and incomplete evacuation, along with **posterior vaginal wall bulging** during Valsalva, are classic signs of a **rectocele**.
- A rectocele results from the weakening or tearing of the **rectovaginal fascia** (also known as the rectovaginal septum), which normally separates the rectum from the vagina and provides support.
*Cardinal ligament*
- The **cardinal ligament** (transverse cervical ligament) primarily provides support to the **cervix and uterus**, preventing uterine prolapse.
- While pelvic organ prolapse is possible, weakness of the cardinal ligament would typically manifest as **uterine prolapse** or anterior vaginal wall bulging (cystocele), not posterior vaginal bulging related to bowel symptoms.
*Uterosacral ligament*
- The **uterosacral ligaments** originate from the cervix and insert into the sacrum, primarily supporting the **uterus and upper vagina**.
- Weakness in these ligaments can contribute to **uterine prolapse** and some forms of vault prolapse after hysterectomy, which are not the primary issues described here.
*Bulbospongiosus muscle*
- The **bulbospongiosus muscle** is part of the superficial perineal pouch and surrounds the vaginal and urethral openings, contributing to **clitoral erection** and tightening the vaginal introitus.
- Weakness of this muscle is not directly associated with rectocele formation or the specific bowel symptoms reported by the patient.
*Pubocervical fascia*
- The **pubocervical fascia** supports the **bladder and urethra**, separating them from the vagina from the front.
- Weakness in this fascia leads to a **cystocele** (prolapse of the bladder into the vagina), which would typically cause urinary symptoms like stress incontinence, not bowel symptoms and posterior vaginal bulging.
Question 28: A 30-year-old woman, gravida 2 para 1, at 39 weeks gestation presents to the hospital with painful contractions and a rupture of membranes. She reports that the contractions started a couple hours ago and are now occurring every 4 minutes. She is accompanied by her husband who states, “her water broke an hour ago before we left for the hospital." The patient denies vaginal bleeding, and fetal movements are normal. The patient has attended all her pre-natal visits without pregnancy complications. She has no chronic medical conditions and takes only pre-natal vitamins. Her blood pressure is 110/75 mm Hg and pulse is 82/min. A fetal heart rate tracing shows a pulse of 140/min with moderate variability and no decelerations. Cervical examination reveals a cervix that is 7 cm dilated and 100% effaced with the fetal head at -1 station. The patient forgoes epidural anesthesia. During which of the following scenarios should a cesarean delivery be considered for this patient?
A. Cervix is 7 cm dilated and fetal head is at 0 station after 4 hours, with contractions every 2 minutes (Correct Answer)
B. Cervix is 7 cm dilated and fetal head is at -1 station after 2 hours with contractions every 7 minutes
C. Cervix is 9 cm dilated and fetal head is at -1 station after 3 hours, with contractions every 3 minutes
D. Cervix is 10 cm dilated and fetal head is at +1 station after 2 hours, with contractions every 2 minutes
E. Cervix is 7 cm dilated and fetal head is at 0 station after 1 hour, with contractions every 5 minutes
Explanation: ***Cervix is 7 cm dilated and fetal head is at 0 station after 4 hours, with contractions every 2 minutes***
- This scenario describes **arrest of active phase of labor** in a **multiparous woman**, defined as no cervical change for at least 4 hours with adequate contractions (every 2-3 minutes) or at least 6 hours with inadequate contractions.
- The patient started at 7 cm dilation and, after 4 hours of strong contractions, has shown no further cervical change, indicating failed labor progression and warranting C-section.
*Cervix is 7 cm dilated and fetal head is at -1 station after 2 hours with contractions every 7 minutes*
- This still represents the **active phase of labor** (from 6 cm dilation onwards), but the contractions are **inadequate** (every 7 minutes) and the duration of observation is too short to diagnose an arrest (2 hours vs. 4 hours for multiparous).
- The appropriate step would be to **augment labor** (e.g., with oxytocin) rather than proceed directly to C-section.
*Cervix is 9 cm dilated and fetal head is at -1 station after 3 hours, with contractions every 3 minutes*
- The patient has progressed from 7 cm to 9 cm, indicating **cervical change**, and contractions are adequate.
- This is not an arrest of labor; she is nearing full dilation and likely progressing appropriately.
*Cervix is 10 cm dilated and fetal head is at +1 station after 2 hours, with contractions every 2 minutes*
- This scenario describes the **second stage of labor** (complete cervical dilation), where the focus shifts to fetal descent. The fetal head has already descended to +1 station and contractions are adequate.
- While prolonged second stage can lead to C-section, the general threshold for intervention in a multiparous woman with epidural is 3 hours, and without epidural, it's 2 hours. This patient is at 2 hours and progressing, so a C-section is not immediately indicated.
*Cervix is 7 cm dilated and fetal head is at 0 station after 1 hour, with contractions every 5 minutes*
- This is still the **active phase of labor**, but the observation period (1 hour) is too short to diagnose an arrest of labor, even with inadequate contractions (every 5 minutes).
- The first step would be to ensure **adequate uterine activity** and observe for a longer period before considering a C-section.
Question 29: A 70-year-old woman, gravida 5, para 5, comes to the physician for the evaluation of sensation of vaginal fullness for the last six months. During this period, she has had lower back and pelvic pain that is worse with prolonged standing or walking. The patient underwent a hysterectomy at the age of 35 years because of severe dysmenorrhea. She has type 2 diabetes mellitus and hypercholesterolemia. Medications include metformin and atorvastatin. Vital signs are within normal limits. Pelvic examination elicits a feeling of pressure on the perineum. Pelvic floor muscle and anal sphincter tone are decreased. Pelvic examination shows protrusion of posterior vaginal wall with Valsalva maneuver and vaginal discharge. Which of the following is the most likely diagnosis?
A. Infectious vulvovaginitis
B. Vaginal cancer
C. Bartholin gland cyst
D. Rectocele (Correct Answer)
E. Atrophic vaginitis
Explanation: ***Rectocele***
- The patient's symptoms of **vaginal fullness**, **lower back and pelvic pain worse with standing**, and **protrusion of the posterior vaginal wall with Valsalva maneuver** are classic for a rectocele.
- Her history of **multiple pregnancies (gravida 5, para 5)** and **decreased pelvic floor muscle tone** are significant risk factors for pelvic organ prolapse, including rectocele.
*Infectious vulvovaginitis*
- While there is mention of **vaginal discharge**, other key features of vulvovaginitis such as **pruritus, burning, dyspareunia, or erythema** are not described.
- The sensation of **vaginal fullness** and **posterior vaginal wall protrusion** are not characteristic symptoms of infectious vulvovaginitis.
*Vaginal cancer*
- Vaginal cancer can present with **vaginal discharge** and **pelvic pain**, but it typically involves **abnormal bleeding** (postmenopausal or postcoital) and visible ulcerations or masses on examination, which are not mentioned.
- The description of **protrusion of the posterior vaginal wall with Valsalva** is highly suggestive of a prolapse, not primary malignancy.
*Bartholin gland cyst*
- A Bartholin gland cyst presents as a **palpable, often tender, mass in the labia majora** near the vaginal introitus, usually unilaterally.
- It does not cause a sensation of **vaginal fullness, pelvic pain, or posterior vaginal wall protrusion** as described.
*Atrophic vaginitis*
- Atrophic vaginitis results from **estrogen deficiency**, leading to **vaginal dryness, irritation, dyspareunia, and thin, pale vaginal mucosa**.
- While common in postmenopausal women, it does not typically cause a **sensation of vaginal fullness** or **protrusion of the vaginal wall with Valsalva maneuver**; these are signs of prolapse.
Question 30: A clinical diagnosis of abruptio placentae is suspected. Which of the following is the most appropriate next step in the management of this patient?
A. Vaginal delivery
B. Administration of intravenous oxytocin
C. Administration of intramuscular betamethasone
D. Administration of intravenous fluids (Correct Answer)
E. Administration of intravenous tranexamic acid
Explanation: ***Administration of intravenous fluids***
- In suspected **abruptio placentae**, significant **blood loss** can occur, leading to maternal **hypotension** and compromise.
- **Intravenous fluids** are crucial for immediate **volume replacement** and maintaining **hemodynamic stability** in both the mother and fetus.
*Vaginal delivery*
- While delivery is often necessary, the **route of delivery** depends on the severity of the abruption, fetal status, and maternal stability; immediate vaginal delivery is not the universal first step before stabilization.
- In cases of severe abruption or fetal distress, an **emergency C-section** might be more appropriate, but **maternal stabilization** with fluids is paramount first.
*Administration of intravenous oxytocin*
- **Oxytocin** is primarily used to **induce labor** or augment contractions, and to prevent or treat **postpartum hemorrhage**.
- It is not indicated as an initial management step for **abruptio placentae**, as it would not address the acute blood loss or fetal compromise.
*Administration of intramuscular betamethasone*
- **Betamethasone** is administered to promote **fetal lung maturity** in cases of preterm delivery.
- While it might be considered if the fetus is preterm and delivery can be delayed for 24-48 hours, **maternal stabilization** and management of acute abruption symptoms take precedence.
*Administration of intravenous tranexamic acid*
- **Tranexamic acid** is an **antifibrinolytic** agent used to reduce bleeding in various settings, including postpartum hemorrhage.
- However, in acute **abruptio placentae**, the immediate concern is **volume resuscitation** rather than directly inhibiting fibrinolysis as the primary first step.