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  • Question 1 - A 26-year-old female G2P1 is in labour at the 38th week of gestation....

    Incorrect

    • A 26-year-old female G2P1 is in labour at the 38th week of gestation. Her membranes ruptured about 8 hours ago. At the moment, she is having contractions lasting 60 seconds every 4 minutes and is 8 cm dilated. The fetal heart tone baseline is currently 80/min with absent variability. The pregnancy was uneventful and she had regular prenatal check-ups.
      Which of the following is the most appropriate next step in management?

      Your Answer: Fetal scalp pH monitoring

      Correct Answer: Maternal position change and oxygen

      Explanation:

      This patient is towards the end of the first stage of labour and is having complications. Labour is divided into 3 stages. The first stage begins at regular uterine contractions and ends with complete cervical dilatation at 10 cm. It has a latent phase and an active phase- The active phase is usually considered to have begun when cervical dilatation reaches 4 cm. So this patient is in the active phase of the first stag- The second stage begins with complete cervical dilatation and ends with the delivery of the foetus. The third stage of labour is the period between the delivery of the foetus and the delivery of the placenta and fetal membranes.

      This patient’s contractions seem adequate and yet the fetal heart tone with baseline 80/min and absent variability suggests fetal distress. This is category III of the fetal heart rate pattern because the baseline rate is < 110/min with absent variability. It is usually predictive of abnormal acid-base status. The recommended actions are maternal position change and oxygen administration, discontinuation of labour stimulus such as oxytocin, treatment of possible underlying conditions, and expedited delivery.
      → Magnesium sulphate infusion is mainly used to prevent eclamptic seizures and despite no evidence of its effectiveness as a tocolytic agent, it is used sometimes to reduce risks of preterm birth.
      → Fetal scalp pH monitoring would help determine if there is indeed an acidosis and should be done before deciding whether a Caesarean section is necessary, but maternal position change and oxygen administration should be done first.
      → Ultrasonography may be used for preinduction cervical length measurement or if the active stage has already started- It is considered more accurate than digital pelvic exam in the assessment of fetal descent; however, at this point maternal position change and oxygen administration should be done first.
      → Immediate Caesarean section would be done if fetal scalp pH monitoring revealed a pH < 7.20. At this point, the best next step is maternal position change and oxygen administration.

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      • Obstetrics
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  • Question 2 - Screening for Group B Streptococcus (GBS) at around 36 weeks of gestation now...

    Correct

    • Screening for Group B Streptococcus (GBS) at around 36 weeks of gestation now is common practice as up to 20% of women carry the organism in the vagina.

      If a pregnant woman is found to have GBS at this stage, which treatment would be most appropriate?

      Your Answer: Parenteral penicillin given six-hourly in labour.

      Explanation:

      Up to 20% of women have been found to have Group B streptococcus (GBS). GBS is considered a normal flora of the gastrointestinal tract. GBS infection is generally asymptomatic although some women might end up having a UTI. Infants born to mothers who are colonised with GBS during labour are at a higher risk of developing early-onset GBS infection. If a pregnant woman develops a UTI due to GBS, it is suggestive of significant GBS colonisation. IV penicillin would be the drug of choice and is to be administered to the mother during labour which would provide sufficient protection for the foetus and would be effective enough. If penicillin is unavailable, ampicillin is a reasonable alternative. If a patient has penicillin allergy, vancomycin can be used. If not for penicillin, roughly 50% of babies delivered vaginally to women who are GBS positive would be colonised with the organism and out of this percentage, 1-2% can go on to develop a severe infection such as septicaemia and meningitis which could often be fatal.

      IM penicillin can be administered to the newborn immediately post-delivery would be an effective prophylaxis in most cases but one should not wait until signs of infection are present to give the injection. Many newborns would still have an immature immune system which could cause some to die. Hence, it is more suitable to treat all women who tested positive during labour and the newborn as well if any signs of infection do appear. The majority of babies don’t need antibiotic treatment if their mother has been treated.

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      • Obstetrics
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  • Question 3 - A 26-year-old nulliparous woman admitted for term pregnancy with spontaneous labour shows no...

    Incorrect

    • A 26-year-old nulliparous woman admitted for term pregnancy with spontaneous labour shows no changes after a six-hour observation period despite membrane rupture, syntocinon infusion, and epidural anaesthesia. Pelvic examination shows failure of the cervix to dilate beyond 4cm and fetal head palpated at level of ischial spine (IS). The patient is diagnosed with obstructed labour.

      Which of the following clinical features is mostly associated with this condition?

      Your Answer: Lack of moulding but caput formation of the fetal head.

      Correct Answer: There is 4crn of head palpable abdominally.

      Explanation:

      The most consistent finding in obstructed labour is a 4cm head that is palpable on the abdomen. The bony part is usually palpated at the level of the ischial spine on pelvic examination.
      When prolonged labour is suspected, a pelvic vaginal examination helps to differentiate obstructed labour from inefficient/incoordinate labour.

      Findings in a pelvic examination:
      Obstructed labour
      moulding of fetal head ++
      caput formation on the fetal head ++
      cervical oedema – anterior lip oedema
      fetal tachycardia ++
      station of the head (relation to lowest part of ischial spines) – just at or above the IS
      amount of head palpable above the pelvic brim when the lowest point of the head is at the IS – > 2 finger breadths (FB)

      Inefficient or incoordinate labour
      moulding of fetal head usually none
      caput formation on fetal head +
      absent cervical oedema
      fetal tachycardia +
      station of the head (relation to lowest part of ischial spines) – can be above or below IS
      amount of head palpable above the pelvic brim when the lowest point of the head is at the IS – < 1 finger breadth (FB).

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      • Obstetrics
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  • Question 4 - A 25 year-old lady presented with complaints of generalised pruritis during the 3rd...

    Correct

    • A 25 year-old lady presented with complaints of generalised pruritis during the 3rd trimester of her pregnancy. She was diagnosed as a case of intrahepatic cholestasis of pregnancy. Which one of the following factors carries the greatest risk to the foetus in this disease?

      Your Answer: Perinatal mortality

      Explanation:

      Intrahepatic cholestasis of pregnancy can affect both mother and foetus, however it is more harmful for the foetus. Amongst foetuses, there is an increased risk of perinatal mortality, meconium aspiration, premature delivery and post partum haemorrhage. Exact cause of fetal death cannot be predicted accurately but it is not related to intra uterine growth retardation or placental insufficiency. The liver can be affected in the mother leading to generalized pruritis but no evidence of fetal hepatic dysfunction has been found.

    • This question is part of the following fields:

      • Obstetrics
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  • Question 5 - A 6-year-old girl is brought to the emergency department for evaluation of vaginal...

    Correct

    • A 6-year-old girl is brought to the emergency department for evaluation of vaginal discharge.  She has had malodorous vaginal discharge and small amounts of vaginal bleeding for about a week. Her mother called the patient’s primary care provider and instructed to stop giving bubble baths to the child, however, the symptoms have not improved. Aside from the discharge, the girl is normal, she was toilet trained at age 2 and has had no episodes of incontinence.  She started kindergarten a month ago. Mother informed that patient has no fever, abdominal pain, or dysuria. 

      On examination, the labia appear normal but a purulent, malodorous vaginal discharge is noted.  Visual inspection with the child in knee-chest position shows a whitish foreign body inside the vaginal introitus. 

      Which among the following is the best next step in management of this patient?

      Your Answer: Irrigate with warmed fluid after local anesthetic application

      Explanation:

      Vaginal spotting, malodorous vaginal discharge and no signs of trauma like lacerations are the clinical features of vaginal foreign bodies in prepubertal girls. The most common object found as foreign body is toilet paper and its management includes warm irrigation and vaginoscopy under sedation/anesthesia.

      Common cause of vulvovaginitis in prepubertal girls are vaginal foreign bodies. Although other objects like small toys, hair bands, etc can be occasionally found, the most common vaginal foreign body is toilet paper. Symptoms like malodorous vaginal discharge, intermittent vaginal bleeding or spotting and urinary symptoms like dysuria are caused due to the chronic irritation caused by the foreign body (the whitish foreign body in this case) on the vaginal tissue.

      An external pelvic examination is performed with the girl in a knee-chest or frog-leg position in cases of suspected vaginal foreign body. An attempt at removal, after application of a topical anesthetic in the vaginal introitus, using vaginal irrigation with warm fluid or a swab can be done in case of an easily visualized small foreign body like toilet paper. In cases were the age of the girl or the type of foreign body prohibit adequate clinical evaluation the patient should be sedated or given a general anesthesia for examination using a vaginoscope and the foreign body should be removed.

      In cases where child abuse or neglect is suspected Child Protective Services should be contacted. Vaginal or rectal foreign bodies can be the initial presentation of sexual abuse; however in otherwise asymptomatic girls with no behavioral changes, urinary symptoms and vulvar or anal trauma, presence of toilet paper is not of an immediately concerning for abuse.

      To evaluate pelvic or ovarian masses CT scan of the abdomen and pelvis can be used; but it is not indicated in evaluation of a vaginal foreign body.

      Patients in there prepubertal age have a narrow vaginal introitus and sensitive hymenal tissue due to low estrogen levels, so speculum examinations should not be performed in such patients as it can result in significant discomfort and trauma.

      Topical estrogen can be used in the treatment of urethral prolapse, which is a cause of vaginal bleeding in prepubertal girls. This diagnosis is unlikely in this case as those with urethral prolapse will present with a beefy red protrusion at the urethra and not a material in the vagina.

      Prepubertal girls with retained toilet paper as a vaginal foreign body will present with symptoms like malodorous vaginal discharge and vaginal spotting secondary to irritation. Initial management is topical anaesthetic application and removal of foreign body either by vaginal irrigation with warm fluid or removal with a swab.

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      • Obstetrics
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  • Question 6 - All of the following statements is considered incorrect regarding the management of deep...

    Incorrect

    • All of the following statements is considered incorrect regarding the management of deep vein thrombosis in pregnancy, except:

      Your Answer: Both warfarin and heparin are can be used to treat deep vein thrombosis in pregnancy

      Correct Answer: Warfarin therapy is contraindicated throughout pregnancy but safe during breast feeding

      Explanation:

      Anticoagulant therapy is the standard treatment for deep vein thrombosis (DVT) but is mostly used in non-pregnant patients. In pregnancy, unfractionated heparin (UFH) and low molecular weight heparin (LMWH) are commonly used. Warfarin therapy is generally avoided in pregnancy because of its fetal toxicity.

      Warfarin is contraindicated during pregnancy, but is safe to use postpartum and is compatible with breastfeeding. Low-molecular-weight heparin has largely replaced unfractionated heparin for prophylaxis and treatment in pregnancy.

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      • Obstetrics
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  • Question 7 - A 25-year-old Aboriginal woman at ten weeks of gestation presents with a 2-week...

    Correct

    • A 25-year-old Aboriginal woman at ten weeks of gestation presents with a 2-week history of nausea, vomiting and dizziness. She has not seen any doctor during this illness.

      On examination, she is found to be dehydrated, her heart rate is 135 per minute (sinus tachycardia), blood pressure 96/60 mm of Hg with a postural drop of more than 20 mm of Hg systolic pressure and is unable to tolerate both liquids and solids.Urine contains ketones and blood tests are pending.

      How will you manage this case?

      Your Answer: Give metoclopramide and intravenous normal saline

      Explanation:

      Analysis of presentation shows the patient has developed hyperemesis gravidarum.
      She is in early shock, presented as sinus tachycardia and hypotension, with ketonuria and requires immediate fluid resuscitation and anti-emetics. The first line fluid of choice is administration of normal saline 0.9%, and should avoid giving dextrose containing fluids as they can precipitate encephalopathy and worsens hyponatremia.

      The most appropriate management of a pregnant patient in this situation is administration of metoclopramide as the first line and Ondansetron as second line antiemetic, which are Australian category A and B1 drugs respectively. The following also should be considered and monitored for:
      1. More refractory vomiting.
      2. Failure to improve.
      3. Recurrent hospital admissions.

      Steroids like prednisolone are third line medications which are used in resistant cases of hyperemesis gravidarum after proper consultation.

    • This question is part of the following fields:

      • Obstetrics
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  • Question 8 - A 23-year-old woman at 36 weeks of gestation in her first pregnancy presents...

    Correct

    • A 23-year-old woman at 36 weeks of gestation in her first pregnancy presents for headache and right upper quadrant abdominal pain for three days. The pregnancy has been normal and unremarkable until now.

      Her blood pressure is 145/90 mmHg and urinalysis shows protein ++. On physical exam, her ankles are slightly swollen. There is slight tenderness to palpation under the right costal margin.

      Which one of the following is the most likely diagnosis?

      Your Answer: Pre-eclampsia.

      Explanation:

      There are a few differential diagnoses to think of in a patient that presents such as this one. Pre-eclampsia, cholecystitis, and fatty liver could all cause pain and tenderness, but cholecystitis would not normally cause the hypertension and proteinuria seen in this patient and neither would acute fatty liver of pregnancy. The more likely explanation is pre-eclampsia which must always be considered in the presence of these symptoms and signs. This process is particularly severe in the presence of pain and tenderness under the right costal margin due to liver capsule distension.

      Chronic renal disease could cause the hypertension and mild proteinuria seen, but it would not usually produce the pain and tenderness that this patient has unless it was complicated by severe pre-eclampsia.

      Biliary cholestasis does not usually produce pain.

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      • Obstetrics
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  • Question 9 - A 30-year-old primigravida was admitted to the hospital in active labor. On admission,...

    Correct

    • A 30-year-old primigravida was admitted to the hospital in active labor. On admission, her cervix was 7 cm dilated and 100% effaced. She received epidural anesthesia and proceeded to complete cervical dilation with fetal head at +3 station within a few hours. Patient who has been pushing for 4 hours is exhausted now and says she cannot feel her contractions, nor knows when to push because of the epidural anesthesia. Patient had no complications during the pregnancy and has no chronic medical conditions. 
      Estimated fetal weight by Leopold maneuvers is 3.4 kg (7.5 lb), patient's vital signs are normal and fetal heart rate tracing is category 1. Tocodynamometer indicates contractions every 2-3 minutes and a repeat cervical examination shows complete cervical dilation with the fetal head at +3 station, in the left occiput anterior position with no molding or caput. 

      Among the following, which is considered the best next step in management of this patient?

      Your Answer: Perform vacuum-assisted vaginal delivery

      Explanation:

      The period from attaining a complete cervical dilation of 10 cm to fetal delivery is considered as the second stage of labor. In the given case patient have achieved an excellent fetal descent to +3 due to her average-sized infant of 3.4 kg, suitable pelvis (no fetal molding or caput, suggesting no resistance against the bony maternal pelvis), and a favorable fetal position of left occiput anterior. 
      But with no further fetal descent the patient fulfills the following criterias suggestive of second-stage arrest like:
      ≥3 hours of pushing in a primigravida without an epidural or ≥4 hours pushing with an epidural, as in this patient
      OR
      ≥2 hours of pushing in a multigravida without an epidural or ≥3 hours pushing with an epidural.

      As continued pushing without any effect will lead to complications like postpartum hemorrhage, limiting the chances of spontaneous vaginal delivery, it is better to manage this case by operative vaginal delivery procedures like vacuum-assisted delivery, to expedite delivery. maternal exhaustion, fetal distress, and maternal conditions like hypertrophic cardiomyopathy, in which the Valsalva maneuver is not recommended are the other indications for performing an operative vaginal delivery.

      Fundal pressure is the technique were external pressure is applied to the most cephalad portion of the uterus, were the applied force is directed toward the maternal pelvis. The maneuver was not found to be useful in improving the rate of spontaneous vaginal deliveries.

      Epidurals will not arrest or affect spontaneous vaginal delivery rates, instead they just lengthen the second stage of labor. Also an appropriate analgesia is a prerequisite to use in operative vaginal delivery.

      Manual rotation of an infant to a breech presentation for breech vaginal delivery is called as internal podalic version. It is contraindicated in singleton deliveries due to the high risk associated with breech vaginal delivery in regards to neonatal mortality and morbidity.

      The ideal fetal head position in vaginal delivery is occiput anterior (OA) as the flexed head in this provides a smaller diameter and facilitates the cardinal movements of labor. The occiput posterior (OP) position, in contrast to OA, presents with a larger-diameter head due to the deflexed position. So the chance for spontaneous vaginal delivery will be decreased if fetal head is rotated to OP position.

      A lack of fetal descent after ≥4 hours of pushing in a primigravida with an epidural (≥3 hours without) or ≥3 hours in a multigravida with an epidural (≥2 hours without) is defined as second stage arrest of labor.  The condition is effectively managed with operative vaginal delivery procedures like vacuum-assisted delivery. Other common indications for operative vaginal delivery are maternal exhaustion, fetal distress, and maternal conditions where the Valsalva maneuver is not recommended.

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      • Obstetrics
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  • Question 10 - Galactorrhoea (non-gestational lactation) may result from all of the following EXCEPT: ...

    Correct

    • Galactorrhoea (non-gestational lactation) may result from all of the following EXCEPT:

      Your Answer: Intrapartum haemorrhage

      Explanation:

      Pituitary tumours, the most common pathologic cause of galactorrhoea can result in hyperprolactinemia by producing prolactin or blocking the passage of dopamine from the hypothalamus to the pituitary gland. Approximately 30 percent of patients with chronic renal failure have elevated prolactin levels, possibly because of decreased renal clearance of prolactin. Primary hypothyroidism is a rare cause of galactorrhoea in children and adults. In patients with primary hypothyroidism, there is increased production of thyrotropin-releasing hormone, which may stimulate prolactin release. Nonpituitary malignancies, such as bronchogenic carcinoma, renal adenocarcinoma and Hodgkin’s and T-cell lymphomas, may also release prolactin.

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      • Obstetrics
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  • Question 11 - A 35-year-old woman presented to the medical clinic for her first prenatal visit....

    Incorrect

    • A 35-year-old woman presented to the medical clinic for her first prenatal visit. Upon history-taking, it was noted that this was her first pregnancy and based on her last menstrual period, she is pregnant for 11 weeks already. There was also no mention of a history of medical problems.

      Upon further observation, the uterus was palpable midway between her pubic symphysis and the umbilicus. There was also no audible fetal heart tones using the Doppler stethoscope.

      Which of the following is considered the best management as the next step given the case above?

      Your Answer: Reassure her that fetal heart tones are not yet audible with the Doppler stethoscope at this gestational age.

      Correct Answer: Schedule an ultrasound as soon as possible to determine the gestational age and viability of the foetus.

      Explanation:

      In pregnancy, the uterus increases in size to accommodate the developing foetus. At 16 weeks gestation, the fundus of the uterus must be palpated at the midpoint between the umbilicus and the pubic symphysis but the patient’s uterus was already palpable at just 11 weeks.

      If less than seven weeks pregnant, it’s unlikely to find a heartbeat by ultrasound. Using transvaginal ultrasound, a developing baby’s heartbeat should be clearly visible by the time a woman is seven weeks pregnant. Abdominal ultrasound is considerably less sensitive, so it can take longer for the heartbeat to become visible. If past seven weeks pregnant, seeing no heartbeat may be a sign of miscarriage.

      Fetal viability is confirmed by the presence of an embryo that has cardiac activity. Cardiac activity is often present when the embryo itself measures 2 mm or greater during the 6th week of gestation. If cardiac activity is not evident, other sonographic features of early pregnancy can predict viability.

      It is recommended that all pregnant women undergo a routine ultrasound at 10 to 13 weeks of gestation to determine an accurate gestational age. Getting an accurate gestational age is highly important and pertinent for the optimal assessment of fetal growth later in pregnancy. Ultrasound is the most reliable method for establishing a true gestational age by measurement of crown-rump length, which can be measured either transabdominally or transvaginally.

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      • Obstetrics
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  • Question 12 - A 50-year-old woman comes to the clinic complaining she is “urinating all the...

    Correct

    • A 50-year-old woman comes to the clinic complaining she is “urinating all the time. It started initially as some leakage of urine with sneezing or coughing, but now she leaks while walking to the bathroom. She voids frequently during the day and several times each night, also sometimes patient feels an intense urge to urinate but passes only a small amount when she tries to void.  She now wears a pad every day and plans her social outings based on bathroom access. Patient had no history of dysuria or hematuria and had 2 vaginal deliveries in her 20s. She drinks alcohol socially, takes 2 or 3 cups of coffee each morning, and “drinks lots of water throughout the day.”  When asked about which urinary symptoms are the most troublesome, the patient is unsure. 

      Among the following which is the best next step in management of this patient?

      Your Answer: Voiding diary

      Explanation:

      This patient experiences a stress based mixed urinary incontinence presented as leakage of urine while sneezing or coughing and urgency which is an intense urge to urinate with small voiding volume as her symptoms. Urinary incontinence is common and may cause significant distress in some, as seen in this patient who wears a pad every day.  Initial evaluation of mixed incontinence includes maintaining a voiding diary, which helps to classify the predominant type of urinary incontinence and thereby to determine an optimal treatment by tracking the fluid intake, urine output and leaking episodes.

      All patients with mixed incontinence generally require bladder training along with lifestyle changes like weight loss, smoking cessation, decreased alcohol and caffeine intake and practicing pelvic floor muscle exercises like Kegels. Depending on the predominant type, patients who have limited or incomplete symptom relief with bladder training may benefit from pharmacotherapy or surgery.

      In patients with urgency-predominant incontinence, timed voiding practice like urinating on a fixed schedule rather than based on a sense of urgency along with oral antimuscarinics are found to be useful.

      Surgery with a mid-urethral sling is performed in patients with stress-predominant incontinence which is due to a weakened pelvic floor muscles as in cystocele.

      In patients with a suspected urethral diverticulum or vesicovaginal fistula, a cystoscopy is usually indicated but is not used in initial evaluation of urinary incontinence due to its cost and invasiveness.

      Urodynamic testing involves measurement of bladder filling and emptying called as cystometry, urine flow, and pressure (eg, urethral leak point).  This testing is typically reserved for those patients with complicated urinary incontinence, who will not respond to treatment or to those who are considering surgical intervention.

      Initial evaluation of mixed urinary incontinence is done by maintaining a voiding diary, which helps to classify predominant type of urinary incontinence into stress predominant or urgency predominant and thereby to determine the optimal treatment required like bladder training, surgical intervention, etc.

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      • Obstetrics
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  • Question 13 - A 26-year-old pregnant woman in her third trimester, was admitted with headache, abdominal...

    Correct

    • A 26-year-old pregnant woman in her third trimester, was admitted with headache, abdominal pain and visual disturbances. Shortly after, she had a fit. What is the most appropriate management?

      Your Answer: 4g MgSO4 in 100ml 0.9% Normal saline in 5 min.

      Explanation:

      The woman is most probably suffering from eclampsia.
      Magnesium sulphate (MgSO4) is the agent most commonly used for treatment of eclampsia and prophylaxis of eclampsia in patients with severe pre-eclampsia. It is usually given by either intramuscular or intravenous routes. The intramuscular regimen is most commonly a 4 g intravenous loading dose, immediately followed by 10 g intramuscularly and then by 5 g intramuscularly every 4 hours. The intravenous regimen is given as a 4 g dose, followed by a maintenance infusion of 1 to 2 g/h by controlled infusion pump.

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  • Question 14 - A 22-year-old G2P2 who is on her 7th day postpartum called her physician...

    Correct

    • A 22-year-old G2P2 who is on her 7th day postpartum called her physician due to her concern of bleeding from the vagina. Upon interview, she described the bleeding to be light pink to bright red and compared with the first few days post-delivery, the bleeding was less heavy. There was also no fever or cramping pain reported by the patient.
      Upon examination, it was observed that she is afebrile and her uterus is appropriately sized and non-tender. There was also the presence of about 10cc old, dark blood in her vagina and her cervix was closed.

      Which of the following is considered the most appropriate treatment for the patient?

      Your Answer: Reassurance

      Explanation:

      The postpartum period begins soon after the baby’s delivery and usually lasts six to eight weeks and ends when the mother’s body has nearly returned to its pre-pregnant state.

      Bloody vaginal discharge (lochia rubra) is heavy for the first 3-4 days, and slowly it becomes watery in consistency and colour changes to pinkish-brown (lochia serosa). After the next 10-12 days, it changes to yellowish-white (lochia alba). Advise women to seek medical attention if heavy vaginal bleeding persists (soaking a pad or more in less than an hour). Women with heavy, persistent postpartum bleeding should be evaluated for complications such as retained placenta, uterine atony, rarely invasive placenta, or coagulation disorders. Endometritis may also occur, presenting as fever with no source, maybe accompanied by uterine tenderness and vaginal discharge. This usually requires intravenous antibiotics. This also should be explained and advise the mother to seek immediate medical attention.

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  • Question 15 - A 35 year old primigravida was in labour for 24 hours and delivered...

    Correct

    • A 35 year old primigravida was in labour for 24 hours and delivered after an induction. She developed postpartum haemorrhage. Which of the following is the most likely cause for PPH?

      Your Answer: Atonic uterus

      Explanation:

      Uterine atony and failure of contraction and retraction of myometrial muscle fibres can lead to rapid and severe haemorrhage and hypovolemic shock. Poor myometrial contraction can result from fatigue due to prolonged labour or rapid forceful labour, especially if stimulated.

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  • Question 16 - A 30-year-old lady at 16 weeks of gestation who had histories of second-trimester...

    Correct

    • A 30-year-old lady at 16 weeks of gestation who had histories of second-trimester pregnancy losses, presented with backache and pre-menstrual-like cramping along with increased vaginal discharge for the past one week.

      Pelvic examination shows that her cervix is dilated by 4 cm and effaced 80%.

      What will be the most likely diagnosis in this case?

      Your Answer: Cervical insufficiency

      Explanation:

      This woman has signs and symptoms suggestive of cervical insufficiency, whose clinical features include pelvic pressure, premenstrual-like cramping and backache with increased vaginal discharge. Usually these symptoms will persist for several days to weeks.
      Cervical insufficiency is seen between 14 – 20 weeks of gestation, which is presented as soft effaced cervix, with minimal dilation on physical examination and a 4 cm dilated and more than 80% effaced cervix will be the clinical presentation in a more advanced case.

      Placental abruption presents with painful vaginal bleeding, whereas Placenta Previa presents as painless vaginal bleeding. Both cases will lead to shock but will not show any features of cervical insufficiency.

      Anaemia, polyhydramnios, large for gestational age uterus and severe hyperemesis gravidarum are the commonly associated symptoms of a twin pregnancies.

      New menstrual cycle after an abortion is expected to be presented with cervical dilation however signs of effacement will not be present along with it.

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  • Question 17 - Warfarin is contraindicated during pregnancy.

    Which of the following complications are possible to develop...

    Incorrect

    • Warfarin is contraindicated during pregnancy.

      Which of the following complications are possible to develop if warfarin is used in second trimester of pregnancy?

      Your Answer: Fetal chondrodysplasia punctata

      Correct Answer: Fetal optic atrophy

      Explanation:

      Administration of warfarin should be avoided throughout pregnancy and especially during the first and third trimesters as it have the ability to cross placenta. Intake of warfarin during 6-12 weeks of gestation can results in fetal warfarin syndrome which is characterized by the following features:
      – A characteristic nasal hypoplasia
      – Short fingers with hypoplastic nails
      – Calcified epiphyses, namely chondrodysplasia punctata, which is evident on X-ray as stippling of the epiphyses.
      – Intellectual disability
      – Low birth weight

      As these effects are usually dose dependent, recent estimates shows that the risk of fetal warfarin syndrome is around 5% in babies of women who requires warfarin throughout pregnancy.
      Later exposure as after 12 weeks, is associated with symptoms like central nervous system anomalies, including microcephaly, hydrocephalus, agenesis of corpus callosum, Dandy-Walker malformation which is presented with complete absence cerebellar vermis and enlarged fourth ventricle, and mental retardation, as well as eye anomalies such as optic atrophy, microphthalmia and Peter anomaly (anterior segment dysgenesis).
      Those newborns exposed to warfarin in all three trimesters there will be blindness and other complication of exposed to warfarin in neonates include perinatal intracranial and other major bleeding episodes.

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  • Question 18 - A 28-year-old woman presents in early labour. She is healthy and at full-term.

    Her...

    Incorrect

    • A 28-year-old woman presents in early labour. She is healthy and at full-term.

      Her pregnancy has progressed well without any complications.

      She indicates that she would like to have a cardiotocograph (CTG) to assess her baby as she has read about its use for foetal monitoring during labour.

      What advice would you give her while counselling her regarding the use of CTG compared to intermittent auscultation during labour and delivery?

      Your Answer: The CTG is better than intermittent auscultation for monitoring.

      Correct Answer: There is no evidence to support admission CTG.

      Explanation:

      In high-risk pregnancies, continuous monitoring of foetal heart rate is considered mandatory.

      However, in low-risk pregnancies, cardiotocograph (CTG) monitoring provides no benefits over intermittent auscultation.

      A significant issue with CTG monitoring is that apparent abnormalities are identified that usually have minimal clinical significance, but can prompt the use of several obstetric interventions such as instrumental deliveries and Caesarean section. In low risk patients, such interventions may not even be required.

      CTG monitoring has not been shown to reduce the incidence of cerebral palsy or other neonatal developmental abnormalities, nor does it accurately predict previous foetal oxygenation status unless the CTG is significantly abnormal when it is first connected.

      Similarly, CTG cannot accurately predict current foetal oxygenation unless the readings are severely abnormal.

      Therefore, there is no evidence to support routine admission CTG (correct answer).

    • This question is part of the following fields:

      • Obstetrics
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  • Question 19 - A 29-year-old woman was admitted to the maternity unit of a hospital due...

    Correct

    • A 29-year-old woman was admitted to the maternity unit of a hospital due to early labour. She is considered healthy and has experienced an uncomplicated pregnancy. She asked a question regarding fetal monitoring during labour and mentioned that she has heard about cardio tocography (CTG) being helpful for assessing the baby's wellbeing and in preventing fetal problems.

      Which of the following is considered the most appropriate advice to give in counselling regarding the use of CTG as a predictor of fetal outcome and satisfactory labour compared with intermittent auscultation and whether CTG monitoring is able to reduce the risk of neonatal developmental abnormalities?

      Your Answer: There is no evidence to support admission CTG

      Explanation:

      Continuous CTG produces a paper recording of the baby’s heart rate and the mother’s labour contractions. Although continuous CTG provides a written record, mothers cannot move freely during labour, change positions easily, or use a birthing pool to help with comfort and control during labour. It also means that some resources tend to be focused on the need to constantly interpret the CTG and not on the needs of a woman in labour.

      Continuous CTG was associated with fewer fits for babies although there was no difference in cerebral palsy; both were rare events. However, continuous CTG was also associated with increased numbers of caesarean sections and instrumental births, both of which carry risks for mothers. Continuous CTG also makes moving and changing positions difficult in labour and women are unable to use a birthing pool. This can impact on women’s coping strategies. Women and their doctors need to discuss the woman’s individual needs and wishes about monitoring the baby’s wellbeing in labour.

      Future research should focus on events that happen in pregnancy and labour that could be the cause of long term problems for the baby.

    • This question is part of the following fields:

      • Obstetrics
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  • Question 20 - A 30-year-old woman, gravida 2 para 1, at 10 weeks of gestation comes...

    Correct

    • A 30-year-old woman, gravida 2 para 1, at 10 weeks of gestation comes to your office for an initial prenatal visit. Patient has had no vaginal bleeding or cramping and her first pregnancy was uncomplicated which ended with a spontaneous term vaginal delivery. She has no chronic medical conditions and has had no previous surgeries. Patient takes a daily dose of prenatal vitamin and does not use tobacco, alcohol, or any other illicit drugs. 

      On examination her blood pressure is 122/80 mm of Hg and pulse is 70/min and BMI is 24 kg/m2.  The uterine fundus is palpated above the pubic symphysis. 
      Pelvic ultrasound shows 2 viable intrauterine gestations, a single fundal placenta, and a thin intertwin membrane that meets the placenta at a 90-degree angle. 

      Among the below mentioned complications, this patient is at highest risk for which one to occur?

      Your Answer: Twin-twin transfusion syndrome

      Explanation:

      Twin gestations are generally at increased risk of complications and this risk is further stratified based on the chorionicity ie. number of placentas and amnionicity, the number of amniotic sacs of the gestation. In the given case patient has monochorionic diamniotic twins, which means 1 placenta and 2 amniotic sacs, based on the presence of 2 embryos, a single placenta and a thin intertwin membrane composed of 2 amniotic sacs that meets the placenta at a 90-degree angle (“T sign”). In patients who appear to have a single placenta, the base shape of the intertwin membrane distinguishes between a monochorionic (“T sign”) and fused dichorionic (“lambda sign”) gestation.
      Monochorionic twins are at high risk for twin-twin transfusion syndrome (TTTS), which is a complication that can result in heart failure and fetal
      eonatal mortality in both twins. In TTTS, unbalanced arteriovenous anastomoses are present between the shared placental vessels that supply the twins, because of these anastomoses, blood from the placental arteries from one twin (donor), which is of high resistance/pressure, is shunted into the placental veins of the other twin (recipient) with low resistance/pressure. This shunting of blood away from the donor twin causes anemia that leads to renal failure, oligohydramnios, low-output heart failure, and fetal growth restriction. In contrast, the shunting of blood toward the recipient twin causes polycythemia, which leads to polyhydramnios, cardiomegaly, high-output heart failure and hydrops fetalis. This in turn makes both twins at high risk for intrauterine and neonatal death.
      Mild TTTS is expectantly managed with serial ultrasounds to evaluate for worsening clinical features, whereas moderate-to-severe cases are treated with laser coagulation of the placental anastomoses.

      In monozygotic twins, placentation type is determined by timing of the twinning.  Twinning that occurs shortly after fertilization yields a dichorionic diamniotic gestation.  In contrast, the incomplete division (ie, fission) that can lead to conjoined twins occurs later in development and yields a monochorionic monoamniotic gestation. As the twins are in the same sac, monochorionic monoamniotic gestations can be complicated by cord entanglement but not possible in the given case as this patient has diamniotic twins.

      Risk factors for placenta accreta, implantation of the placenta directly into the myometrium, include placenta previa and prior uterine surgeries like cesarean delivery, myomectomy, etc

      Twin pregnancies are at increased risk of placenta previa (placental tissue that covers the internal cervical os); however, this patient has a fundal placenta, making this complication unlikely.

      Monochorionic twin gestations can be complicated by twin-twin transfusion syndrome, which is potentially a fatal condition that results from unbalanced vascular anastomoses between the vessels supplying umbilical cords of each twin.

    • This question is part of the following fields:

      • Obstetrics
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SESSION STATS - PERFORMANCE PER SPECIALTY

Obstetrics (14/20) 70%
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