Early Pregnancy Problems Flashcards
What pattern of electrolyte disturbance is typically seen in severe ovarian hyperstimulation syndrome?
a. Raised sodium, raised potassium, low osmolality
b. Raised sodium, low potassium, raised osmolality
c. Low sodium, raised potassium, low osmolality
d. Low sodium, low potassium, raised osmolality
e. Low sodium, raised potassium, raised osmolality
C - Low sodium, low potassium, Low osmolality
Typically more severe forms of OHSS are characterised by hypovolaemia with fluid loss into the third space (ascites most commonly, though also pleural and pericardial effusions are possible in severe cases). This hypovolaemia is associated with a fall in plasma osmolality and sodium concentration due to ‘resetting’ of the osmotic thresholds and urine being concentrated to these new thresholds. Potassium is generally elevated.
What is the incidence of moderate/severe ovarian hyperstimulation syndrome in an IVF cycle?
a. 0.5-0.8%
b. 2-5%
c. 3-8%
d. 5-10%
e. 25-30%
C - 3-8%
Around 30% of IVF cycles are complicated by some degree of OHSS, the vast majority of which are mild, self-limiting cases. Around 3-8% of patients will experience more severe forms though inpatient treatment is indicated in <1%.
You review a patient 11 days following an hCG injection as part of an IVF cycle. She complains of bloating, abdominal pain and vomiting. The abdomen is soft to palpation with only mild tenderness. On USS the ovarian size is 9.5cm on the left and 10cm on the right. There is evidence of ascites on scan though not on examination. Haematocrit is elevated at 0.40. Serum electrolytes and coagulation screen are normal. You suspect ovarian hyperstimulation syndrome (OHSS) – what grade do you diagnose?
a. Mild
b. Moderate
c. Severe
d. Critical
e. Features not suggestive of OHSS
B - Moderate
This is moderate OHSS based on ovarian size, mildly elevated haematocrit and clinical symptoms. Clinical evidence of ascites would up-stage the presentation to severe – as would any biochemical derangement - though here it is seen on scan only.
What is the relative risk of VTE in the first trimester in an IVF pregnancy compared with a spontaneous pregnancy?
a. 20x
b. 10x
c. 6x
d. 4x
e. 2x
D - 4x
The overall risk of VTE in the first trimester is low – 0.2 per 1000 spontaneous pregnancies - though rises four-fold to 0.8 per 1000 with IVF. If the pregnancy is complicated by OHSS there is a further 21x rise to 16.8 per 1000.
What is the risk of VTE in the first trimester of pregnancies complicated by ovarian hyperstimulation syndrome?
a. 2.4 per 1000
b. 5.3 per 1000
c. 7.9 per 1000
d. 12.6 per 1000
e. 16.8 per 1000
E - 16.8 per 100
The overall risk of VTE in the first trimester is low – 0.2 per 1000 spontaneous pregnancies - though rises four-fold to 0.8 per 1000 with IVF. If the pregnancy is complicated by OHSS there is a further 21x rise to 16.8 per 1000.
A 37 year old patient is undergoing IVF after extensive investigation revealed idiopathic infertility. She has undergone egg retrieval following hCG administration followed by implantation of 2 embryos. She wishes to know what the likelihood is of developing ovarian hyperstimulation syndrome. What do you advise?
a. 10%
b. 20%
c. 30%
d. 50%
e. 65%
C - 30%
Around 30% of IVF cycles are complicated by some degree of OHSS, the vast majority of which are mild, self-limiting cases. Around 3-8% of patients will experience more severe forms though inpatient treatment is indicated in <1%.
A patient presents with a case of severe ovarian hyperstimulation syndrome – she has tense ascites , oliguria and a haematocrit of 0.48. After being treated with appropriate fluid replacement, she remains markedly oliguric though her haematocrit has normalised. What is the most appropriate management?
a. Paracentesis
b. Furosemide IV
c. Bendroflumethizide Orally
d. Spironolactone Orally
e. 500ml crystalloid fluid challenge
A - Paracentesis
Patients who fail to respond to conservative treatment may require paracentesis, the indications for which are as follows:
- Severe abdominal pain/distension
- Shortness of breath/respiratory compromise
- Oliguria despite adequate volume replacement
50-100mg of 25% human albumin solution may be used in patients with persistently elevated haematocrit despite fluid rehydration and there may be a role for diuretics in select cases, though the scenario here requires ascitic drainage in the first instance.
Following an IVF cycle and positive pregnancy test, a patient presents with abdominal pain, nausea and vomiting and mild shortness of breath. Further examination reveals normal lung sounds though palpable ascites abdominally. Chest x-ray is normal, haematocrit 0.4 and ultrasound of the pelvis demonstrates ovaries approximately 9cm in maximum diameter. Which of the following renders this presentation of ovarian hyperstimulation syndrome ‘severe’?
a. Shortness of breath
b. Haematocrit
c. Palpable ascites
d. Ovarian size
e. All of the above
C - Palpable ascites
Severe OHSS is defined by:
- Clinical ascites
- Oliguria
- H’crit >0.45
- Electrolyte disturbance
- Hypo-osmolality
- Ovarian size >12cm
Which of the following is typically associated with increased severity of ovarian hyperstimulation syndrome?
a. Increased pre-treatment antral follicle count
b. Ovarian stimulation with recombinant rather than urinary gonadotrophins
c. Successful, on-going pregnancy
d. Increased maternal BMI
e. Maternal age >35
C - Successful ongoing pregnancy
OHSS can be broadly divided into early and late presentation. Late cases, typically associated with successful pregnancy, tend to be more severe, thought to be complicated by the rising hCG levels.
Which of the following is NOT a risk factor for ovarian hyperstimulation syndrome (OHSS)?
a. Previous OHSS
b. High Anti-Müllerian Hormone (AMH) levels
c. Polycystic Ovarian Syndrome
d. High Antral Follicle Count
e. Maternal age >40
E - Maternal age >40
Patients with previous OHSS are at increased risk of recurrence, due in part to the persistence of the other risk factors quoted – i.e. those with PCOS or evidence of high ovarian reserve. There is no known association with maternal age.
What is the overall risk per cycle of ovarian hyperstimulation syndrome in patients undergoing IVF?
a. 1 in 2
b. 1 in 3
c. 1 in 4
d. 1 in 5
e. 1 in 10
B - 1 in 3
Around 30% of IVF cycles are complicated by some degree of OHSS, the vast majority of which are mild, self-limiting cases. Around 3-8% of patients will experience more severe forms though inpatient treatment is indicated in <1%.
A patient is admitted to the gynaecology ward 10 days after completing an IVF cycle, reporting bloating and abdominal pain. Bloods are normal though USS is performed which demonstrates increased ovarian size of 78mm on the right and 69mm on the left. What is the most likely diagnosis here?
a. Corpus luteum
b. Dermoid cysts
c. Mild OHSS
d. Moderate OHSS
e. Severe OHSS
C - Mild OHSS
This is mild OHSS – the ovarian volume is <8cm and the patient described has mild symptoms only with no ascites nor biochemical derangement. The corpus luteum is usually unilateral and to be of the size described would be unusual. While bilateral dermoid cysts is a possibility, there is little else in the history to support such a diagnosis. The background of IVF means OHSS is the most likely scenario here.
What are the legal obligations on medical practitioners in respect of mandatory reporting cases of ovarian hyperstimulation syndrome (OHSS) to the HFEA?
a. All cases of OHSS however mild must be reported
b. Any case considered moderate or greater must be reported
c. Any case considered severe or critical must be reported
d. Only critical cases must be reported
e. No mandatory reporting
C - Any case considered severe or critical must be reported
The HFEA mandates that only severe and critical cases must be reported. This means that true prevalence of the condition is difficult to assess. Deaths occurring in women with OHSS must be reported to MBBRACE irrespective of whether or not pregnancy occurs.
A patient with moderate ovarian hyperstimulation syndrome (OHSS) is reviewed on the gynaecology assessment unit. She is well and it is felt that continued outpatient management remains appropriate. How often should patients with OHSS being managed on an outpatient basis be reviewed?
a. Daily
b. 2-3 days
c. Weekly
d. 11-14 days
e. Only if symptoms worsen
B - 2-3 days
Most patients with OHSS can be managed as outpatients with review in an ambulatory setting every 2-3 days or sooner if symptoms worsening.
The vast majority of cases of ovarian hyperstimulation syndrome are self limiting. How long typically do cases persist?
a. 4-5 days
b. 7-10 days
c. 11-14 days
d. 3-4 weeks
e. 2-3 months
B - 7-10 days
Most cases of OHSS will resolve with supportive measures only in 7-10 days
What is the increased risk of miscarriage amongst pregnancies affected by ovarian hyperstimulation syndrome?
a. 2x
b. 4x
c. 8x
d. 15x
e. No increased risk
E - No increased risk
Rates of pre-eclampsia and preterm delivery are found to be increased in women with pregnancies complicated by OHSS though perhaps curiously, miscarriage rates appear unchanged.
What is the incidence of ectopic pregnancy amongst women presenting to early pregnancy units in the UK?
a. 2-3%
b. 4-5%
c. 8-9%
d. 10-12%
e. 13-15%
A - 2-3%
Ectopic pregnancy is seen in approximately 11 in every 1000 pregnancies in the UK – equivalent to around 11,000 cases per year or 1.1% of the obstetric population. Amongst the sub-group of the obstetric population seen in early pregnancy units, rates are predictably higher - 2-3% in this cohort will have ectopic pregnancy.
What is the recurrence rate of ectopic pregnancy?
a. 2.5%
b. 5%
c. 13.5%
d. 16%
e. 18.5%
E - 18.5%
Based on best available evidence, the overall recurrence risk for ectopic pregnancy is ~18.5% - which seems to be the same whether expectant, medical or surgical management is employed in the index case.
The most common ultrasound finding in tubal ectopic pregnancy is that of a non-cystic adnexal mass. In what percentage of tubal ectopic pregnancies will a clear gestational sac containing a yolk sac +/- fetal pole be seen?
a. 5-10%
b. 10-15%
c. 15-20%
d. 25-25%
e. 25-30%
C - 15-20%
An empty extra-uterine gestational sac is seen in 20-40% of ectopic pregnancies though a yolk sac and fetal pole are less common, visualised in only 15-20%. A non-cystic adnexal mass is by far the most common finding and is seen in up to 60%.
What is the length of the interstitial portion of the fallopian tube?
a. 0.5-1cm
b. 1-2cm
c. 2.5-3cm
d. 3-4cm
e. 4-5cm
B - 1-2cm
The interstitium is the final 1-2cm portion of the fallopian tube as it enters the uterus traversing the muscular myometrium of the uterine wall. Pregnancies implanting into the interstitial tube account for up to 6.3% of all ectopics. The classic appearance on USS is of a gestational sac in the upper, lateral corner of the uterus surrounded by >5mm of myometrium in all planes and of the ‘interstitial line sign’ – a thin echogenic line running between the centre of the uterus and the gestational sac. MRI may be used as an adjunct in making this, often difficult, diagnosis.
You see a patient post-op after a laparoscopy for tubal ectopic pregnancy. Intra-operatively, there was significant bilateral tubal damage with adhesions and contralateral hydrosalpinx noted, thus a decision was made to perform a salpingotomy on the affected tube in lieu of a planned salpingectomy. You explain to the patient the possibility of requiring further treatment for persistent trophoblast tissue – in what percentage of patients is further treatment needed after salpingotomy?
a. 4-11%
b. 8-15%
c. 15-20%
d. 21-27%
e. 30-33%
A - 4-11%
In patients with contralateral tubal damage, subsequent live birth rates appear considerably improved where salpingotomy rather than salpingectomy is performed for tubal ectopic pregnancy. Persistent trophoblast tissue requiring either adjunctive medical or further surgical treatment is an issue however and is seen in 4-11% of patients.
What is the most appropriate follow up after discharge for patients who undergo salpingotomy over salpingectomy for management of tubal ectopic pregnancy?
a. Urine pregnancy test in 2 weeks
b. Serum hCG in 48 hours and 48-hourly thereafter until negative
c. Serum hCG in 7 days and 48-hourly thereafter until negative
d. Serum hCG in 7 days and weekly thereafter until negative
e. No routine follow up required unless symptomatic
D - Serum hCG in 7 days and weekly thereafter until negative
Owing to the risks of persistent trophoblast (4-11%), patients who undergo salpingotomy rather than salpingectomy for ectopic pregnancy require follow up with serial hCG readings – the first reading should be taken at 7 days then weekly thereafter until returned to normal. Plateauing or rising levels should prompt consideration of the need for further management.
You see a patient in the EPAU with a diagnosis of tubal ectopic pregnancy. On review of the notes and ultrasound findings, it is felt that medical treatment with methotrexate is appropriate as the patient is keen to avoid surgery. What is the dose of methotrexate for medical management of ectopic pregnancy?
a. 25mg/kg
b. 25mg/m2
c. 30mg/m2
d. 50mg/m2
e. 50mg/kg
D - 50mg/m2
Methotrexate is dosed by body surface area rather than weight – the standard dose in medical management of ectopic pregnancy is 50mg/m2.
What follow up would you arrange for a patient who has received methotrexate for a tubal ectopic pregnancy?’
a. hCG on days 4 and 7 – if fall >15% between 4 and 7; for weekly hCG until negative
b. hCG on days 4 and 7 – if fall >25% between 4 and 7; for weekly hCG until negative
c. hCG on day 4 – if fall >15% between 1 and 4; for weekly hCG until negative
d. Repeat scan in 7 days with hCG
e. Repeat hCG in 48 hours then on days 4 and 7 if not falling
A - hCG on days 4 and 7 – if fall >15% between 4 and 7; for weekly hCG until negative
Patients treated with methotrexate should have their hCG level repeated on days 4 and 7 post treatment. While a rise may be seen between levels on days 0 and 4, it is a fall between days 4 and 7 of >15% that indicates suitability to continue with medical management. Where levels do not fall sufficiently between days 4 and 7, a repeat ultrasound scan should be performed to exclude fetal cardiac activity or haemoperitoneum and assess on-going suitability. Where the ultrasound is normal, consideration may be given to repeating the dose of methotrexate at this point.
NICE stipulate clear criteria regarding patient suitability for methotrexate as first line treatment for ectopic pregnancy. What do they suggest as the maximum diameter of the ectopic mass for methotrexate assuming unruptured and no FH activity is seen?
a. 15mm
b. 25mm
c. 35mm
d. 45mm
e. 55mm
C - 35mm
NICE guidelines (which are themselves referenced in the RCOG guideline) suggest medical management with methotrexate is used as first line management in patients:
• With no significant pain
• Who have an unruptured ectopic mass <35mm with no visible cardiac activity on scan
• Beta-hCG between 1500 and 5000
• No intrauterine pregnancy seen on scan
Between what hCG range do NICE recommend methotrexate as first line treatment of ectopic pregnancy?
a. 0 and 500
b. 0 and 1500
c. 500 and 1500
d. 500 and 5000
e. 1500 and 5000
E - 1500 and 5000
NICE guidelines (which are themselves referenced in the RCOG guideline) suggest medical management with methotrexate is used as first line management in patients:
• With no significant pain
• Who have an unruptured ectopic mass <35mm with no visible cardiac activity on scan
• Beta-hCG between 1500 and 5000
• No intrauterine pregnancy seen on scan
Some clinically stable patients may be suitable for expectant management first line in ectopic pregnancy. Assuming all other criteria are met, what pattern of hCG levels is required for expectant management?
a. Falling hCG initially <1500
b. Falling hCG initially <1000
c. Falling hCG initially <500
d. hCG rise <15% initially <1500
e. hCG rise <15% initially <1000
A - Falling hCG initially <1500
Patients who are haemodynamically stable in whom hCG levels are initially <1500 and falling may be suited to expectant management assuming the remainder of the criteria for medical management are met (i.e. no significant pain, mass <35mm, no IUP).
An ST1 trainee asks you about a patient on the gynaecology ward who has undergone an emergency laparotomy earlier in the afternoon for a ruptured ectopic pregnancy. The patient is Rhesus negative and the trainee is wondering whether or not Anti-D is required. What percentage of ruptured ectopic pregnancies are complicated by feto-maternal haemorrhage?
a. 15%
b. 25%
c. 33%
d. 50%
e. 75%
B - 25%
Irrespective of gestation, all women who undergo surgical management of an ectopic pregnancy should receive anti-D if rhesus negative. This is because significant feto-metal haemorrhage is though to complicate as many as 25% of ruptured ectopic pregnancies.
A patient undergoing medical management of ectopic pregnancy with methotrexate enquires about the side effects to be expected, both serious and mild. Which of the following is NOT a recognised potential side effect of systemic methotrexate therapy?
a. Liver cirrhosis
b. Renal failure
c. Diminished ovarian reserve
d. Gastric ulceration
e. Marrow suppression
C - Diminished ovarian reserve
Diminished ovarian reserve is not known to be associated with methotrexate use, though patients should defer further pregnancy for a minimum of 3 months after treatment.
How long after treatment with methotrexate should women be advised to wait prior to trying for a further pregnancy?
a. 2 months
b. 3 months
c. 4 months
d. 6 months
e. 12 months
B - 3 months
Patients who are treated with methotrexate should generally defer trying for a further pregnancy for a minimum of 3 months after treatment. Conceiving within this 3 month window is not in itself an indication for termination of pregnancy however.
You see a patient in the EPAU with a scan at 7 weeks. Sadly, a diagnosis of tubal ectopic pregnancy is made and you explain the diagnosis to the patient with signposting to support groups. What proportion of patients will experience a significant grief reaction with ectopic pregnancy?
a. 3 in 10
b. 5 in 10
c. 7 in 10
d. 8 in 10
e. 9 in 10
B - 5 in 10
50% of patients who suffer an ectopic pregnancy are thought to display a significant grief reaction. Signposting to relevant charitable organisations can be useful.
What transient biochemical abnormality is commonly seen as a side effect of methotrexate treatment?
a. Raised creatinine
b. Raised ALT
c. Low urea
d. Hyponatraemia
e. Hypercalcaemia
B - Raised ALT
Amongst the more common, though typically mild, side effects of methotrexate, a transient rise in liver enzymes is described.
Which of the following drugs/drug classes should be avoided in patients undergoing medical management of ectopic pregnancy with methotrexate?
a. Combined oral contraceptives
b. Enzyme inducing anti-epileptics
c. Monoamine oxidase inhibitors
d. Vitamin D
e. Folic acid
E - Folic Acid
As the main mode of action of methotrexate is as a folate antagonist, folate-containing preparations (as well as alcohol) should be avoided for the duration of treatment.
A patient undergoes medical management of a tubal ectopic pregnancy with methotrexate. Her hCG levels are as follows:
Day 0 1605
Day 4 1879
Day 7 1800
An ultrasound scan is performed which demonstrates unchanged appearances from the initial scan – a scan inhomogeneous 28mm mass in the left adnexa with no pelvic free fluid. She is haemodynamically stable. What is the appropriate management here?
a. Repeat hCG in 48 hours
b. Repeat ultrasound in 7 days
c. Arrange laparoscopic salpingectomy in theatre
d. Repeat methotrexate dose
e. Arrange laparoscopic salpingotomy in theatre
D - Repeat methotrexate dose
Patients undergoing medical management of ectopic pregnancy with methotrexate should have their hCG levels rechecked on days 4 and 7. Providing the patient remains well and hCG falls >15% between days 4 and 7, continuation of medical management is appropriate. In this case there has been only a minimal change in hCG though the scan is unchanged and the patient remains well – repeating the methotrexate dose may be considered.
What is the respective proportion of molar pregnancy account for by complete and partial moles respectively?
Complete Partial
a. 75% 25%
b. 60% 40%
c. 50% 50%
d. 25% 75%
e. 10% 90%
A - 75% Complete; 25% Partial
Complete molar pregnancy (diploid – fertilisation of an empty egg) is more common than partial (tri/tetraploid – two sperm fertilising a normal egg) at a ratio of approximate 75% to 25% (or 3:1)
What percentage of patients with complete molar pregnancy will require chemotherapy?
a. Up to 3%
b. Up to 8%
c. Up to 15%
d. Up to 21%
e. Up to 32%
C - Up to 15%
The overall rate of chemotherapy for patients in the UK is low – 5-8%. It is higher however for patients with complete mole (15%) than partial mole (0.5%)
How long after medical management of miscarriage should a urine pregnancy test be performed, assuming products of conception were not sent for histological analysis?
a. 1 week
b. 2 weeks
c. 3 weeks
d. 6 weeks
e. 8 weeks
C - 3 weeks
Patients who undergo medical management of miscarriage should be advised to take a urine pregnancy test at home 3 weeks after completion especially when products of conception have not been sent for histological analysis.
What is the estimated incidence of molar pregnancy following termination of pregnancy?
a. 1 in 1000
b. 1 in 2000
c. 1 in 5000
d. 1 in 10,000
e. 1 in 20,000
E - 1 in 20,000
There is no routine need to send POC for histology following a therapeutic TOP – on the provision that fetal parts have been identified on USS prior to the procedure. While GTD following TOP Is incredibly rare – est. ~1 in 20,000 – the delay in diagnosis often leads to higher rates of adverse outcomes and life threatening complications.
A patient attends for a dating scan during which it is suspected that the pregnancy may represent a twin pregnancy in which one half is a molar pregnancy and the other apparently developing normally. What is the rate of live birth of the ‘normal’ twin in this scenario?
a. 80%
b. 65%
c. 40%
d. 25%
e. 10%
D - 25%
The outcomes for pregnancies such as that described – normal pregnancy with a concurrent complete mole – is poor, with only a 25% chance of achieving a live birth. These women should be referred to the regional fetal medicine centre for pre-natal invasive testing for fetal karyotype – particular if the precise diagnosis is uncertain – i.e. complete/normal or actually a well developed partial mole. Rates of pre-eclampsia, premature delivery and early fetal loss are unsurprisingly all increased in this scenario.
A patient is referred to the regional centre for trophoblastic disease after undergoing an ERPC for complete molar pregnancy at 6 weeks. Her hCG levels on day 21 post-op are undetectable. For how long should she be followed up?
a. 56 days from ERPC
b. 56 days from first normal hCG result
c. 6 months from first normal hCG result
d. 6 months from ERPC
e. She may be discharged at this point as hCG levels are now normal
D - 6 months from ERPC
Follow up after GTD is increasingly individualised though a few basic principles apply:
• Where hCG has returned to normal within 56 days of the pregnancy event, follow up is for 6 months from the date of uterine evacuation
• Where hCG remains elevated at day 56, follow up should be for 6 months from the date of normalisation of hCG
A patient is reviewed by the regional centre for trophoblastic disease after undergoing ERPC for complete molar pregnancy at 5 weeks. Her hCG levels are checked on day 21 post-op and remain elevated. For how long should she be followed up?
a. 56 days from ERPC
b. 56 days from first normal hCG result
c. 28 days from first normal hCG result
d. 6 months from ERPC
e. 6 months normalisation of hCG
E - 6 months from normalisation of hCG
Follow up after GTD is increasingly individualised though a few basic principles apply:
• Where hCG has returned to normal within 56 days of the pregnancy event, follow up is for 6 months from the date of uterine evacuation
• Where hCG remains elevated at day 56, follow up should be for 6 months from the date of normalisation of hCG
What percentage of patients with partial molar pregnancy will require chemotherapy?
a. 0.5%
b. 2%
c. 10%
d. 15%
e. 25%
A - 0.5%
The overall rate of chemotherapy for patients in the UK is low – 5-8%. It is higher however for patients with complete mole (15%) than partial mole (0.5%)
Using the FIGO scoring system to plan chemotherapy following molar pregnancy, which of the following is associated with an increased likelihood of requiring chemotherapy?
a. Age 38
b. Tumour size 2.5cm
c. Lung metastases
d. Pre-treatment serum hCG 55
e. GI tract metastases
E - GI tract metastases
Determining the need for chemotherapy in patients with GTN is based on the 2000 FIGO scoring system based on assessment undertaken at the treatment centre. It is worth remembering as it doesn’t necessarily follow an immediately clear logic.
Using this system, a score or 6 or less is considered low-risk and treatment with single agent chemo (methotrexate) on alternate days with folic acid for 1 weeks is given and associated with a cure rate of almost 100%. Scores of 7 or higher however are high-risk and command multi-drug IV chemotherapy continued until hCG normalises and for 6 weeks thereafter. Cure rates in the high risk group remain optimistic (95%).
Using the FIGO scoring system to plan chemotherapy following molar pregnancy, which of the following scores is the highest risk factor?
a. Time from index pregnancy-treatment 14 months
b. Tumour size 5cm
c. Metastases to kidney
d. Previous single drug chemotherapy failure
e. GTD following termination of pregnancy
A - Time from index pregnancy-treatment 14 months
Determining the need for chemotherapy in patients with GTN is based on the 2000 FIGO scoring system based on assessment undertaken at the treatment centre. It is worth remembering as it doesn’t necessarily follow an immediately clear logic.
Using this system, a score or 6 or less is considered low-risk and treatment with single agent chemo (methotrexate) on alternate days with folic acid for 1 weeks is given and associated with a cure rate of almost 100%. Scores of 7 or higher however are high-risk and command multi-drug IV chemotherapy continued until hCG normalises and for 6 weeks thereafter. Cure rates in the high risk group remain optimistic (95%).
What treatment is recommended for patients scoring a 6 or lower on the FIGO system?
a. Methotrexate – alternate days for one week
b. Methotrexate – single dose
c. Methotrexate – weekly dosing until hCG normal and for 6 weeks thereafter
d. Vincristine and Dactomycin – single course
e. Vincristine and Dactomycin – for 6 weeks after normalisation of hCG
A - Methotrexate on alternative days for one week
Determining the need for chemotherapy in patients with GTN is based on the 2000 FIGO scoring system based on assessment undertaken at the treatment centre. It is worth remembering as it doesn’t necessarily follow an immediately clear logic.
Using this system, a score or 6 or less is considered low-risk and treatment with single agent chemo (methotrexate) on alternate days with folic acid for 1 weeks is given and associated with a cure rate of almost 100%. Scores of 7 or higher however are high-risk and command multi-drug IV chemotherapy continued until hCG normalises and for 6 weeks thereafter. Cure rates in the high risk group remain optimistic (95%).
What is the risk of a further molar pregnancy in patients with a history of the condition?
a. 1 in 10
b. 1 in 50
c. 1 in 80
d. 1 in 150
e. 1 in 300
C - 1 in 80
The risk of recurrence of molar pregnancy is low at only 1 in 80 – more than 98% of patients who fall pregnant again in the future will not have another molar pregnancy and indeed nor are they deemed to be at increased risk of obstetric complications. Where molar pregnancy does recur, it is the same histological type in 68-80% of cases.
A 23 year old undergoes an ERPC following diagnosis of a molar pregnancy. She comes to the clinic 6 weeks later to discuss contraception options. She remains under the care of the regional centre as her hCG levels have yet to normalise. Which of the following do you advise is the most appropriate contraceptive for her?
a. Injection
b. Implant
c. Mirena IUS
d. Copper IUD
e. Condoms
E - Condoms
Women with GTD should be advised to use barrier methods of contraception until hCG levels return to normal. The copper IUD is contra-indicated until this time due to the risk of uterine perforation at insertion.
By how much on average, does chemotherapy expedite menopause by?
Single Agent Multiple Agent
a. No change 1 year
b. 1 year 3 years
c. 3 years 3 years
d. 1 year 1 year
e. No change No change
B - Single agent: 1 year; Multiple agent: 3 years
Women who receive chemotherapy for GTN are likely to experience an earlier menopause – advanced by 1 year with single drug, and 3 years with multi-drug regimens.
Amongst women of which ethnic background is gestational trophoblastic disease most common?
a. Eastern European
b. South American
c. North African
d. Asian
e. Afro-Caribbean
D - Asian
Among women in the UK, rates of GTD are almost twice as high in women from Asian backgrounds compared with women of other origins.
What is the approximate rate of gestational trophoblastic disease expressed per number of live births in the UK?
a. 1 in 500
b. 1 in 700
c. 1 in 1500
d. 1 in 2500
e. 1 in 5000
B - 1 in 700
The overall incidence of gestational trophoblastic disease in the UK is approximately 1 in 714 live births.