Termination of Pregnancy (Abortion)

1. Clinical Overview

Summary

Termination of Pregnancy (TOP) is the intentional medical or surgical ending of pregnancy before viability. It is one of the most common gynaecological procedures worldwide. In the UK, TOP is legally regulated under the Abortion Act 1967 (as amended by the Human Fertilisation and Embryology Act 1990), which permits abortion up to 24 weeks' gestation under specific grounds, and beyond 24 weeks in exceptional circumstances (e.g., severe fetal abnormality, risk to the woman's life or health). [1,2]

Approximately 214,000 abortions were performed in England and Wales in 2022, representing a rate of 18.2 per 1,000 women aged 15-44. The majority (82%) occur before 10 weeks' gestation, with medical methods now accounting for over 87% of all procedures. [3]

Methods

Clinical Pearls

Ground C Accounts for > 98% of Cases: "The pregnancy has not exceeded its 24th week and that the continuance of the pregnancy would involve risk, greater than if the pregnancy were terminated, of injury to the physical or mental health of the pregnant woman."

Two Doctors' Signatures Required: Legally, two registered medical practitioners must independently certify that statutory grounds are met by signing the HSA1 form (except in emergencies under Ground A).

Exclude Ectopic Pregnancy FIRST: Always confirm intrauterine pregnancy with ultrasound before proceeding. Treating an undiagnosed ectopic pregnancy with medical abortion can result in rupture, haemorrhage, and maternal death.

Anti-D Prophylaxis: Rhesus-negative women require Anti-D immunoglobulin (500 IU IM) for all surgical abortions and for medical abortions > 10 weeks' gestation to prevent rhesus isoimmunisation. [4]

Immediate Contraception: Ovulation can occur as early as 8-10 days post-abortion. Long-acting reversible contraception (LARC) can be initiated immediately post-procedure (IUD/IUS after surgical, or after confirmed complete medical abortion). [5]

"Post-Abortion Syndrome" is Not Evidence-Based: High-quality studies demonstrate that the predominant emotion following abortion is relief, not regret. Mental health outcomes are similar to carrying an unwanted pregnancy to term. [6]

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2. Epidemiology

United Kingdom Statistics (2022)

• Total Abortions: 214,256 in England & Wales
• Rate: 18.2 per 1,000 women aged 15-44 (highest since Abortion Act)
• Gestation at Procedure:
  • 82% performed at less than 10 weeks
  • 9% at 10-12 weeks
  • 8% at 13-19 weeks
  • less than 1% at ≥20 weeks (primarily fetal anomaly or maternal health grounds)
• Method Distribution:
  • "Medical abortion: 87%"
  • "Surgical abortion: 13%"
• Age Distribution:
  • "Highest rate: Women aged 20-24 (27.9 per 1,000)"
  • "Second highest: Women aged 25-29 (23.1 per 1,000)"
  • "Adolescents (less than 18): 6.4 per 1,000"
• Repeat Abortions: 43% had at least one previous abortion [3]

International Context

• Global Incidence: Approximately 73 million induced abortions occur worldwide annually (WHO 2022)
• Safety Disparities: Almost all abortion-related deaths occur in countries with restrictive abortion laws. Case-fatality rate: less than 1 per 100,000 in legal settings vs. 220 per 100,000 in unsafe settings
• Regional Rates: Highest in Eastern Europe and lowest in Western Europe and North America [7]

Grounds for Abortion (UK Abortion Act 1967)

Key Legal Point: Grounds C and D include consideration of the woman's "actual or reasonably foreseeable environment" – recognising the social, economic, and psychological context of the pregnancy.

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3. Pathophysiology and Pharmacology

Exam Detail: ### Medical Abortion: Mechanism of Action

Medical abortion combines two drugs with complementary mechanisms:

1. Mifepristone (Antiprogestin)

• Mechanism: Competitive progesterone receptor antagonist
• Effects:
  • Blocks progesterone action at the decidua → decidual necrosis
  • Induces detachment of the gestational sac from the uterine wall
  • Softens and dilates the cervix (via prostaglandin upregulation)
  • Increases myometrial sensitivity to prostaglandins
  • Stimulates release of endogenous prostaglandins
• Pharmacokinetics:
  • "Oral bioavailability: 69%"
  • "Peak plasma concentration: 1-2 hours"
  • "Half-life: 18-20 hours"
  • "Protein binding: 98%"
• Dosing: 200 mg orally (single dose) [1,8]

2. Misoprostol (Prostaglandin E1 Analogue)

• Mechanism: Binds to prostaglandin E receptors (EP2, EP3, EP4)
• Effects:
  • Induces strong myometrial contractions
  • Promotes cervical ripening and dilatation
  • Stimulates expulsion of products of conception
• Pharmacokinetics:
  • Rapid absorption (all routes)
  • "Peak concentration: 30-60 min (varies by route)"
  • "Half-life: 20-40 minutes"
  • Rapidly metabolised to misoprostol acid (active metabolite)
• Routes (in order of efficacy):
  • "Vaginal: Most effective, longer duration of action"
  • "Buccal/Sublingual: Rapid absorption, fewer GI side effects than oral"
  • "Oral: Fastest absorption, more GI side effects"
• Dosing: 800 mcg, administered 24-48 hours after mifepristone [1,8,9]

Timing of Administration

• Early Medical Abortion (EMA): ≤10 weeks
  • Mifepristone 200 mg → 24-48h → Misoprostol 800 mcg
  • Home use of both drugs is safe and effective (NICE NG140) [2]
• Second Trimester: > 12 weeks
  • Mifepristone 200 mg → 24-48h → Misoprostol 800 mcg repeated q3h (up to 4 doses)
  • Hospital setting required

Surgical Abortion: Mechanism

Cervical Preparation

Before surgical abortion, the cervix must be dilated to allow passage of instruments:

• Pharmacological Dilation (preferred for first trimester):
  • Misoprostol 400 mcg (sublingual, buccal, or vaginal) 2-3 hours before procedure
  • Reduces cervical resistance and risk of trauma
• Mechanical Dilation:
  • "Osmotic dilators (Dilapan-S): Overnight placement for second trimester"
  • "Pratt or Hegar metal dilators: Intraoperative incremental dilation"

Vacuum Aspiration (less than 14 weeks)

1. Cervical dilation (mechanical or pharmacological)
2. Introduction of flexible plastic cannula through cervix
3. Vacuum suction (manual or electric) to aspirate products of conception
4. Gentle curettage to ensure complete evacuation
5. Inspection of aspirate to confirm complete tissue removal

Dilatation & Evacuation (≥14 weeks)

1. Cervical preparation (misoprostol or osmotic dilators 12-24h prior)
2. Greater cervical dilation required (to 15-20 mm)
3. Evacuation using:
   • Vacuum aspiration for amniotic fluid
   • Forceps (Sopher or Bierer) for fetal tissue
   • Gentle curettage for placental tissue
4. Ultrasound guidance recommended [10,11]

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4. Clinical Presentation and Pre-Procedure Assessment

Initial Presentation

Women seeking abortion may present via:

• Self-referral to abortion service
• GP referral
• Sexual health clinic
• Emergency department (with unplanned pregnancy)

Consultation Framework (Non-Directive Counselling)

The consultation must be non-directive, non-judgmental, and explore all options:

1. Pregnancy Confirmation:

   • Urine hCG (if not already confirmed)
   • Serum hCG if equivocal or ectopic suspected

2. Gestational Dating:

   • Last Menstrual Period (LMP) – calculate expected gestation
   • Ultrasound scan (transvaginal preferred less than 9 weeks)
     • Confirms viability
     • Confirms intrauterine location (excludes ectopic)
     • Accurate gestational dating (crown-rump length less than 14 weeks, biparietal diameter > 14 weeks)

3. Options Counselling:

   • Continue pregnancy: Parenting support, antenatal care pathway
   • Adoption: Refer to adoption services if interested
   • Termination of pregnancy: Medical vs. surgical options

4. Decision-Making Autonomy:

   • Ensure decision is voluntary and informed
   • Safeguarding assessment: Screen for coercion, domestic abuse, trafficking (subtle, sensitive questioning)
   • Consider vulnerability: Adolescents, learning difficulties, mental health conditions

5. Informed Consent:

   • Nature of procedure (method, process, what to expect)
   • Risks and complications (common and serious)
   • Alternatives (including continuing pregnancy)
   • Post-procedure care and follow-up
   • Contraception options

Safeguarding and Capacity

Clinical Pearl: Red Flags for Coercion:

• Partner or family member insisting on abortion against woman's wishes
• Woman appears anxious, controlled, or unable to speak freely
• Inconsistent history or partner answering for her
• Request for abortion but expresses desire for pregnancy
• Multiple repeat abortions with same controlling partner

Gillick Competence (Under 16): Young people can consent to abortion if they fully understand what is involved. However, encourage involvement of parent/guardian where appropriate. Fraser guidelines apply.

Mental Capacity: Assess capacity to consent. If lacking capacity, proceed under Mental Capacity Act 2005 (best interests decision with appropriate legal framework).

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5. Investigations

Standard Pre-Procedure Workup

Optional/Conditional Investigations

STI Screening and Prophylaxis

• Chlamydia trachomatis: Present in 10-15% of women undergoing abortion
• Screening:
  • Vulvovaginal swab or first-catch urine (NAAT)
  • Test for gonorrhoea simultaneously
• Prophylaxis (RCOG recommendation):
  • Azithromycin 1g PO single dose (covers Chlamydia)
  • OR treat if positive screen
  • Plus Metronidazole 1g PR/800mg PO at time of surgical procedure (anaerobic cover)
• Reduces post-abortal infection rate by 50% [12,13]

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6. Differential Diagnosis

Before proceeding with termination, exclude other causes of positive pregnancy test with bleeding/pain:

CRITICAL: Ectopic Pregnancy Must Be Excluded

• Incidence: 1-2% of all pregnancies
• Risk if missed: Rupture → haemoperitoneum → hypovolaemic shock → death
• Diagnosis:
  • Empty uterus on TVUS + positive hCG = ectopic until proven otherwise
  • If hCG > 1500 IU/L, should see gestational sac on TVUS (discriminatory zone)
  • "If uncertain: Serial hCG (should rise > 63% in 48h in viable IUP; slower rise or plateau suggests ectopic or failed pregnancy)"
• Management: Refer urgently. Do NOT give mifepristone/misoprostol for ectopic [14]

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7. Management

Management Algorithm

         WOMAN REQUESTS TERMINATION OF PREGNANCY
                        ↓
         INITIAL CONSULTATION & COUNSELLING
         (Non-directive, all options discussed)
                        ↓
              INVESTIGATIONS
         (USS: Confirm IUP, gestation, viability)
         (Bloods: Group & Save, Hb, STI screen)
                        ↓
         CONFIRM ELIGIBILITY (UK Abortion Act)
         (Two doctors certify grounds - HSA1 form)
                        ↓
                   CONSENT
         (Informed, voluntary, capacity confirmed)
                        ↓
              METHOD SELECTION
         (Patient preference + gestation)
      ┌──────────────┴──────────────────┐
   MEDICAL                          SURGICAL
 (≤10 weeks: EMA)              (≤14
w: MVA/EVA)
 (10-24
w: Hospital)            (≥14
w: D&E)
      ↓                                ↓
 Day 1: Mifepristone 200mg        Cervical Prep
 (Clinic or home)                 (Misoprostol or dilators)
      ↓                                ↓
 Day 2-3: Misoprostol 800mcg      PROCEDURE
 (Home or clinic)                 (LA/Sedation/GA)
      ↓                                ↓
 EXPULSION                        Vacuum Aspiration
 (Bleeding, cramping 1-4h)        or D&E
      ↓                                ↓
 ANTI-D IF RH-NEG (> 10w)          ANTI-D IF RH-NEG (All)
      ↓                                ↓
         CONTRACEPTION (Immediate initiation)
                        ↓
         POST-PROCEDURE FOLLOW-UP
         (Telephone or clinic at 2 weeks)
         (LSCS if incomplete, urine hCG if uncertain)

Method Selection: Medical vs. Surgical

Patient Factors Influencing Choice

Medical Abortion Protocol

Early Medical Abortion (EMA): ≤10 Weeks

Day 1 (Clinic or Telemedicine):

• Mifepristone 200 mg orally
• Observe for 30 minutes (vomiting rare; if vomits less than 30 min, repeat dose)
• Provide written information leaflet
• Prescribe:
  • Misoprostol 800 mcg (for home use 24-48h later)
  • "Analgesia: Ibuprofen 400mg QDS PRN, Codeine 30-60mg QDS PRN"
  • "Anti-emetic: Cyclizine 50mg TDS PRN (misoprostol causes nausea)"

Day 2-3 (Home):

• Misoprostol 800 mcg (vaginal, buccal, or sublingual)
  • "Vaginal: Most effective, place high in vagina"
  • "Buccal: Place 2 tablets in each cheek pouch, hold for 30 min, then swallow residue"
  • "Sublingual: Similar to buccal, under tongue"
• Expulsion typically occurs 4-6 hours after misoprostol (range 1-24 hours)
• Bleeding heavier than period, with clots (may see gestational sac)
• Cramping pain (prostaglandin-induced contractions)

Success Rate: 95-98% complete abortion without further intervention [8,15]

Failure (2-5% of cases):

• Ongoing pregnancy (needs surgical abortion)
• Incomplete abortion (heavy bleeding, pain, retained products on USS → surgical management)

Medical Abortion 10-24 Weeks (Hospital Setting)

• Day 1: Mifepristone 200 mg orally
• Day 2 (36-48h later, hospital admission):
  • Misoprostol 800 mcg (vaginal or sublingual)
  • Repeat misoprostol 400 mcg every 3 hours (up to 4 additional doses)
  • Expulsion typically 6-12 hours
  • Requires delivery ward setting (fetal parts > 12 weeks)
  • Examine products of conception
  • Check for completeness (USS if uncertain)

Exam Detail: Second Trimester Protocol Variations:

• 13-20 weeks: Misoprostol 400 mcg PV q3h (max 5 doses per 24h)
• 20-24 weeks: Misoprostol 400 mcg PV q3h (max 4 doses per 24h) – lower dose due to increased uterine sensitivity
• Feticide with intra-cardiac KCl may be offered ≥22 weeks to ensure fetal demise before expulsion (reduces risk of live birth)

Surgical Abortion Protocol

Manual/Electric Vacuum Aspiration (MVA/EVA): ≤14 Weeks

Pre-Procedure:

• Cervical preparation: Misoprostol 400 mcg (sublingual/buccal/vaginal) 2-3 hours before procedure (reduces cervical trauma risk)
• STI prophylaxis: Azithromycin 1g PO + Metronidazole 1g PR (or 800mg PO)
• Informed consent

Anaesthesia Options:

• Local anaesthetic (paracervical block): 10-20ml 1% lidocaine around cervix at 4 and 8 o'clock
• + Conscious sedation: Midazolam 2-5mg IV + Fentanyl 50-100mcg IV
• General anaesthetic: If patient preference or complex case

Procedure (5-10 minutes):

1. Bimanual examination (confirm size, position of uterus)
2. Insert speculum
3. Apply antiseptic to cervix (chlorhexidine or iodine)
4. Grasp anterior lip of cervix with tenaculum
5. Administer paracervical block (if local)
6. Dilate cervix incrementally (Pratt dilators) – usually 6-12mm depending on gestation
7. Insert flexible plastic cannula (size = gestation in mm, e.g., 8mm at 8 weeks)
8. Apply vacuum suction (manual syringe aspiration or electric pump, -60 to -80 kPa)
9. Rotate cannula gently to aspirate all products
10. Confirm complete evacuation (gritty sensation when curette scrapes empty uterus)
11. Inspect aspirate (confirm tissue volume appropriate for gestation)
12. Remove instruments, observe for bleeding

Post-Procedure:

• Observe for 30-60 minutes
• Check vital signs, vaginal bleeding
• Administer Anti-D if Rh-negative (500 IU IM)
• Initiate contraception (LARC can be inserted immediately)
• Discharge when stable with analgesia and emergency contact details

Success Rate: > 99% [10]

Dilatation & Evacuation (D&E): ≥14 Weeks

Pre-Procedure (12-24 hours before):

• Cervical preparation:
  • "Osmotic dilators (Dilapan-S): Insert 3-5 rods into cervix 12-24h before (progressive hydrophilic expansion dilates cervix)"
  • OR Misoprostol 400 mcg PV/SL 3-4 hours before procedure
• Antibiotic prophylaxis
• Group & Save (higher bleeding risk)

Procedure (15-30 minutes, usually GA):

1. Remove osmotic dilators
2. Further mechanical dilation (to 15-20mm)
3. Evacuate amniotic fluid (suction)
4. Remove fetal parts with forceps (Sopher, Bierer)
5. Remove placenta (forceps + suction curettage)
6. Confirm complete evacuation (ultrasound guidance recommended)
7. Administer oxytocin/ergometrine to contract uterus

Higher Complication Risk (compared to first trimester):

• Uterine perforation: 1-4 per 1,000
• Cervical trauma: 1-2%
• Haemorrhage requiring transfusion: 0.5%
• Infection: 1-2% [10,11]

Anti-D Rhesus Prophylaxis

Rationale: Fetomaternal haemorrhage risk is negligible less than 10 weeks (fetal blood volume less than 1ml). After 10 weeks, potential for rhesus sensitisation increases. Surgical procedures carry higher risk due to instrumentation. [4,16]

Post-Procedure Contraception

Ovulation Returns Rapidly: Can occur as early as 8-10 days post-abortion. Immediate contraception initiation is essential to prevent short-interval repeat pregnancy.

LARC (Long-Acting Reversible Contraception) is Preferred: Most effective, does not require daily adherence, and reduces repeat abortion rates by 60-75%. [5,17]

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8. Complications

Immediate Complications (less than 24 Hours)

Early Complications (Days to Weeks)

Clinical Pearl: Post-Abortal Sepsis is rare but life-threatening:

• Clostridium sordellii: Toxic shock without fever, rapidly progressive multi-organ failure (historically associated with medical abortion, now extremely rare with modern protocols)
• Group A Streptococcus: Severe sepsis, necrotizing fasciitis
• Red Flags: Tachycardia out of proportion to temperature, severe pain, malaise, confusion
• Action: Urgent admission, IV antibiotics, surgical evacuation, ICU support

Long-Term Complications

Mental Health Outcomes

Evidence-Based Perspective:

• No causal link between abortion and mental health disorders (APA Task Force, NCCMH systematic review) [6,18]
• "Post-Abortion Syndrome" is not a recognised psychiatric diagnosis (not in DSM-5 or ICD-11)
• Predominant emotion post-abortion is relief (> 90% of women report no regret)
• Risk factors for negative psychological outcomes:
  • Pre-existing mental health conditions
  • Coerced decision or lack of social support
  • Termination for maternal health or fetal anomaly (grief and loss)
  • Stigma and lack of access to care
• Mental health outcomes similar between abortion and carrying unwanted pregnancy to term (Turnaway Study) [6]

Clinical Approach:

• Normalise range of emotions (relief, sadness, guilt, ambivalence)
• Provide access to post-abortion counselling if desired
• Screen for pre-existing mental health conditions
• Follow up if termination for medical/fetal reasons (offer bereavement support)

Effect on Future Fertility and Pregnancy Outcomes

Evidence-Based Reassurance:

• No increased risk of infertility after uncomplicated abortion [19]
• No increased risk of ectopic pregnancy in subsequent pregnancies
• No increased risk of placenta praevia or placental abruption
• No increased risk of preterm birth (except possibly after multiple second-trimester D&E procedures)
• No increased risk of miscarriage in subsequent pregnancies
• No effect on breast cancer risk (comprehensive studies refute this myth)

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9. Follow-Up and Confirmation of Completion

Medical Abortion Follow-Up

2-Week Follow-Up (telephone or clinic):

• Assess bleeding pattern (should be reducing)
• Check pregnancy symptoms have resolved
• Confirm completion by one of:
  • Low-sensitivity urine pregnancy test (hCG less than 1000 IU/L) at 2 weeks – if negative, abortion complete
  • "Clinical assessment: Symptoms resolved, bleeding settled – if normal, abortion likely complete"
  • "Ultrasound (if clinical concern): Endometrial thickness less than 15mm suggests complete abortion"

Indications for Ultrasound Follow-Up:

• Heavy ongoing bleeding (> 2 pads/hour)
• Persistent severe pain
• Fever or signs of infection
• Persistent pregnancy symptoms (nausea, breast tenderness)
• Patient anxiety

Management of Incomplete Medical Abortion:

• Repeat dose of misoprostol 800 mcg (can repeat once)
• Surgical evacuation if persistent heavy bleeding or patient preference

Surgical Abortion Follow-Up

• Usually no routine follow-up required (procedure confirmed complete at time of surgery by inspection of aspirate)
• Contact if:
  • Heavy bleeding (> 2 pads/hour)
  • Fever > 38°C
  • Severe pain
  • Offensive discharge
• 2-Week Check (optional, can be telephone):
  • Confirm contraception started
  • Screen for complications
  • Offer STI results and partner notification

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10. Legal and Ethical Considerations

UK Legal Framework

Abortion Act 1967 (as amended 1990)

• Grounds: Two doctors must certify in good faith that one or more grounds (A-E) are met
• Gestational Limits:
  • "Grounds C & D: 24 weeks"
  • "Grounds A, B, E: No limit"
• HSA1 Form: Certificate of Opinion (signed by two doctors before procedure)
• HSA4 Form: Notification to Chief Medical Officer (completed after procedure, statutory data collection)
• Place of Treatment: Must be in NHS hospital or approved independent clinic (telemedicine amendment 2020 allows home use of abortion pills for EMA)

Conscientious Objection

• Healthcare professionals have a legal right to conscientious objection under the Abortion Act 1967
• Applies to: Direct participation in abortion procedure
• Does NOT apply to:
  • Emergency treatment to save a woman's life (must provide care)
  • Administrative tasks (booking appointments, providing information)
  • Post-abortion care (treating complications)
• Duty to refer: Must refer promptly to another provider if objection

Northern Ireland

• Abortion legal since 2020 (regulations similar to England/Wales)
• Services still limited; many women travel to England for abortion

Scotland

• Abortion Act 1967 applies
• Telemedicine abortion services well-established

Ethical Principles

Autonomy

• Woman's right to make informed decisions about her own body and pregnancy
• Non-directive counselling respects autonomy

Beneficence and Non-Maleficence

• Abortion is safer than continuing pregnancy to term (maternal mortality perspective)
• Reducing unsafe abortion reduces maternal death and morbidity globally

Justice

• Equitable access to safe abortion services
• Addressing barriers: Geography, cost (free on NHS), stigma, language

Gestational Limits and Viability

• 24-week limit based on viability (50% survival at 24 weeks with intensive care)
• Exceptions for serious fetal anomaly or maternal health recognise competing ethical considerations

Exam Detail: Philosophical Perspectives:

• Gradualist View: Moral status of fetus increases gradually with development
• Personhood Debate: When does personhood begin? (Conception, sentience, viability, birth)
• Bodily Autonomy Argument: Woman's right to bodily autonomy supersedes fetal rights (Judith Jarvis Thomson's violinist analogy)
• Harm Reduction: Legal abortion prevents unsafe abortion deaths

MRCOG candidates should understand ethical frameworks but avoid personal opinion in exams.

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11. Prognosis and Outcomes

Safety Profile

• Mortality: less than 1 per 100,000 legal abortions (compared to ~8 per 100,000 live births in UK)
• Major Complications: less than 1% (requiring hospital admission, transfusion, or major surgery)
• Minor Complications: 2-5% (incomplete abortion, infection)
• Safety increases with earlier gestation: First trimester abortion is 14 times safer than second trimester [7,20]

Efficacy

Patient Satisfaction

• Overall satisfaction: 80-95%
• Medical abortion: Higher satisfaction if patient prefers privacy, control, avoidance of surgery
• Surgical abortion: Higher satisfaction if patient prefers certainty, speed, minimal bleeding
• Regret: less than 5% report regret at 5 years (lowest among women with planned abortions, highest among those with coercion or ambivalence) [6]

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12. Evidence and Guidelines

Key Guidelines

Landmark Evidence

1. Mifepristone-Misoprostol Efficacy (Cochrane 2020):

   • Combined regimen 95-98% effective for EMA
   • Misoprostol alone 85-90% effective (inferior)
   • Vaginal route slightly more effective than oral, but buccal/sublingual acceptable [8]

2. Telemedicine Abortion Safety (BJOG 2021):

   • No increase in adverse events compared to in-person care
   • High patient satisfaction
   • Removes geographical barriers [9]

3. Mental Health Outcomes (Turnaway Study, 2020):

   • Women denied abortion had worse mental health, physical health, and economic outcomes than those who received abortion
   • No evidence of "post-abortion syndrome"
   • Relief is predominant emotion [6]

4. Antibiotic Prophylaxis (Cochrane 2012):

   • Reduces post-abortal infection by 50%
   • Universal prophylaxis more cost-effective than screen-and-treat [13]

5. Fertility Outcomes (BJOG 2018):

   • No association between abortion and subsequent infertility
   • No increased risk of ectopic, miscarriage, or preterm birth (except possibly multiple second-trimester D&E) [19]

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13. Examination Focus

High-Yield MRCOG Topics

Written Exam (Part 1/2)

Pharmacology:

• Mechanism of mifepristone (antiprogestin → decidual necrosis)
• Misoprostol routes and efficacy (vaginal > buccal/sublingual > oral)
• Anti-D indications (all surgical, medical > 10 weeks)

Legal/Ethical:

• Grounds for abortion (Ground C = 98%)
• Two doctors' signatures (HSA1)
• Conscientious objection limits (does NOT apply to emergencies)
• Gestational limits (24 weeks for C/D, no limit for A/B/E)

Complications:

• Incomplete abortion: 2-5% medical, less than 1% surgical
• Infection prevention: Antibiotic prophylaxis reduces by 50%
• Future fertility: Uncomplicated abortion does NOT affect fertility

Clinical Stations (Part 3)

Scenario 1: Counselling for Medical vs. Surgical Abortion (Communication Skills)

• Non-directive approach
• Explore patient values and preferences
• Explain both methods clearly (process, timing, pain, bleeding, success)
• Discuss contraception
• Assess for coercion/safeguarding concerns
• Informed consent

Scenario 2: Management of Incomplete Medical Abortion (Clinical Judgment)

• History: Timing, bleeding volume, pain, fever
• Examination: Vitals, abdominal tenderness, speculum (products in os?), bimanual (uterine size, tenderness)
• Investigations: USS (retained products), FBC, Group & Save
• Management: Repeat misoprostol OR surgical evacuation, analgesia, antibiotics if infection suspected

Scenario 3: Post-Abortion Contraception Counselling (Counselling)

• Emphasize rapid return of fertility (ovulation 8-10 days)
• Recommend LARC (most effective, reduces repeat abortion)
• Explain all options (IUD/IUS, implant, injection, pills)
• Address myths (weight gain, fertility effects)
• Immediate initiation

Viva Voce Questions and Model Answers

Q1: "A 19-year-old woman presents at 8 weeks' gestation requesting termination. How would you counsel her?"

Model Answer: "I would conduct a non-directive, non-judgmental consultation. First, I'd confirm the pregnancy and gestation with ultrasound to exclude ectopic pregnancy and ensure accurate dating. I'd explore all options: continuing the pregnancy with antenatal care, adoption, or termination. If she chooses termination, I'd explain medical and surgical methods. At 8 weeks, medical abortion is highly effective (95-98%) with mifepristone followed by misoprostol 24-48 hours later, which she can take at home. Surgical abortion (vacuum aspiration) is also an option, which is quick and definitive (> 99% success) under local anaesthetic or sedation. I'd assess for any safeguarding concerns subtly. I'd arrange STI screening and offer antibiotic prophylaxis. We'd discuss contraception, ideally LARC initiation immediately post-procedure. I'd confirm two doctors certify grounds (usually Ground C) on the HSA1 form, and ensure informed consent before proceeding."

Q2: "What are the contraindications to medical abortion?"

Model Answer: "The main contraindications are:

• Ectopic pregnancy – must exclude with USS before giving mifepristone/misoprostol
• IUD in situ – should be removed before medical abortion
• Chronic adrenal failure – mifepristone has antiglucocorticoid activity
• Porphyria – theoretical risk with mifepristone
• Severe anaemia (Hb less than 9.5 g/dL) – risk of significant bleeding
• Anticoagulation – relative contraindication due to bleeding risk
• Allergy to mifepristone or misoprostol
• Inability to access emergency care within reasonable time if needed

Suspected ectopic pregnancy is the most critical contraindication to identify."

Q3: "When should Anti-D be given in the context of abortion?"

Model Answer: "Anti-D immunoglobulin (500 IU IM) should be given to rhesus-negative women:

• All surgical abortions at any gestation, within 72 hours post-procedure
• Medical abortions > 10 weeks' gestation, within 72 hours of misoprostol administration

Anti-D is NOT required for medical abortion ≤10 weeks' gestation, as the fetomaternal haemorrhage risk is negligible at this early stage (NICE NG140 guidance). However, if there is heavy bleeding or concern about significant fetomaternal haemorrhage, a lower dose (250 IU) may be considered on a case-by-case basis. The goal is to prevent rhesus isoimmunisation and haemolytic disease of the newborn in future pregnancies."

Q4: "A woman has an incomplete medical abortion with ongoing heavy bleeding. How do you manage this?"

Model Answer: "This is a complication requiring prompt management.

Assessment:

• Take a history: Timing of mifepristone/misoprostol, volume of bleeding (number of pads/hour), passage of clots/tissue, pain, fever
• Examine: Vital signs (BP, HR – assess for haemodynamic compromise), abdominal exam (tenderness, peritonism), speculum exam (bleeding source, products in cervix), bimanual (uterine size, tenderness, open cervical os)
• Investigations: FBC (check Hb), Group & Save, pelvic USS (look for retained products – endometrial thickness, echogenic material)

Management:

• If haemodynamically unstable: IV access, fluids, crossmatch, urgent surgical evacuation (suction curettage)
• If stable with confirmed retained products:
  • "Option 1: Repeat misoprostol 800 mcg (vaginal/buccal) – may complete abortion medically"
  • "Option 2: Surgical evacuation (suction curettage) – quicker, more definitive, patient may prefer"
• Analgesia: NSAIDs, codeine
• Antibiotics: If signs of infection (fever, offensive discharge) – doxycycline + metronidazole
• Anti-D: If not already given and rhesus-negative
• Contraception: Initiate once completion confirmed
• Follow-up: Confirm completion with USS or low-sensitivity urine hCG at 2 weeks"

Q5: "What is the legal framework for abortion in the UK?"

Model Answer: "Abortion in the UK is governed by the Abortion Act 1967, as amended by the Human Fertilisation and Embryology Act 1990.

Key provisions:

• Grounds: Two registered medical practitioners must certify in good faith that one or more of five statutory grounds (A to E) are met
• Ground C (> 98% of cases): Risk to the woman's physical or mental health if pregnancy continues is greater than if terminated, up to 24 weeks gestation
• Grounds A, B, E have no gestational limit: Risk to woman's life, prevent grave permanent injury, or substantial risk of serious fetal handicap
• Documentation: HSA1 form signed by two doctors before procedure; HSA4 form notifies Chief Medical Officer after procedure
• Place: Must be performed in NHS hospital or approved clinic (telemedicine allows home use of pills for early medical abortion since 2020)
• Conscientious objection: Professionals can object to direct participation, but must refer and must participate in emergencies

Scotland and Wales: Abortion Act applies. Northern Ireland: Legal since 2020 with similar regulations."

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14. Patient and Layperson Explanation

What is Termination of Pregnancy (Abortion)?

An abortion is a medical procedure or medication used to end a pregnancy. In the UK, it is legal when certain conditions are met, and it is a very safe and common procedure. Around 1 in 3 women in the UK will have an abortion in their lifetime.

What are my options if I have an unplanned pregnancy?

You have three options:

1. Continue the pregnancy and become a parent, with support from healthcare services, family, or social services.
2. Continue the pregnancy and consider adoption, where your baby is cared for by another family.
3. Have an abortion to end the pregnancy.

This is entirely your decision. Healthcare professionals will support you whatever you choose, and you will not be judged.

How does abortion work?

There are two main types:

Medical Abortion (Abortion Pills)

• You take two different tablets over 1-2 days.
• First tablet (Mifepristone): Stops the pregnancy from growing. You take this at a clinic or at home.
• Second tablets (Misoprostol): Taken 24-48 hours later. These cause the womb to contract and push out the pregnancy, similar to a heavy, crampy period.
• You will have bleeding and cramping for a few hours to a day. You may see clots and tissue.
• This method works best in early pregnancy (up to 10 weeks). It is 95-98% effective.

Surgical Abortion

• A short procedure (5-10 minutes) where a doctor gently removes the pregnancy from your womb using suction.
• You can have local anaesthetic (numbing injection) with sedation (to help you relax), or a general anaesthetic (where you're asleep).
• It is quick and definitive – the abortion is completed on the same day.
• It is over 99% effective.

Is abortion safe?

Yes. Legal abortion in the UK is very safe. Serious complications are rare. Abortion is actually safer than giving birth.

• Less than 1 in 100,000 women die from legal abortion (compared to about 8 in 100,000 from childbirth).
• Complications like heavy bleeding or infection occur in less than 2-5% of cases.

Will abortion affect my future fertility?

No. A safe, uncomplicated abortion does not affect your ability to get pregnant or have healthy babies in the future. Your fertility returns very quickly after an abortion – you can get pregnant again within 8-10 days, so it's important to start contraception right away if you don't want another pregnancy.

Will I need time off work or study?

• Medical abortion: Most women manage at home with painkillers. You may want to rest for 1-2 days while the main bleeding and cramping happen.
• Surgical abortion: You'll need the day of the procedure off. Most women feel well enough to return to normal activities the next day, though some prefer to rest for 1-2 days.

What about contraception afterwards?

You can get pregnant very soon after an abortion (as early as 8-10 days), so it's important to start contraception immediately if you want to avoid another pregnancy. The most effective methods are long-acting contraception like the coil (IUD) or implant, which can be fitted on the same day as your abortion. You can also start the pill, injection, or other methods.

What if I feel sad or upset afterwards?

It's normal to have a range of feelings after an abortion – relief, sadness, guilt, or nothing at all. Most women feel relieved. If you're struggling emotionally, speak to your GP or the abortion service. Counselling is available if you need it. There is no medical condition called "post-abortion syndrome" – abortion does not cause long-term mental health problems.

What if I'm under 18?

If you're under 16, you can still have an abortion if the doctor believes you understand what's involved (this is called "Gillick competence"). The service will encourage you to talk to a parent or trusted adult, but they won't force you to. Your confidentiality will be respected unless there are serious safeguarding concerns.

Where can I get more information and support?

• Your GP
• Sexual health clinics
• BPAS (British Pregnancy Advisory Service): 0300 333 68 28
• MSI Reproductive Choices UK: 0345 300 8090
• NHS 111 for urgent advice

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15. References

Primary Sources

1. Contraception: Induced abortion. NICE Clinical Knowledge Summary (CKS). 2023. Available at: https://cks.nice.org.uk/topics/contraception-induced-abortion/

2. National Institute for Health and Care Excellence (NICE). Abortion care. NICE guideline [NG140]. Published September 2019, updated August 2024. Available at: https://www.nice.org.uk/guidance/ng140

3. Department of Health and Social Care. Abortion Statistics, England and Wales: 2022. Published June 2023. Available at: https://www.gov.uk/government/statistics/abortion-statistics-for-england-and-wales-2022

4. National Institute for Health and Care Excellence (NICE). Routine antenatal anti-D prophylaxis for women who are rhesus D negative. NICE Technology Appraisal Guidance [TA156]. 2008 (Updated 2021).

5. Faculty of Sexual and Reproductive Healthcare (FSRH). Contraception After Pregnancy. Clinical Guidance. January 2017 (Amended October 2020).

6. Biggs MA, Upadhyay UD, McCulloch CE, Foster DG. Women's Mental Health and Well-being 5 Years After Receiving or Being Denied an Abortion: A Prospective, Longitudinal Cohort Study. JAMA Psychiatry. 2017;74(2):169-178. doi:10.1001/jamapsychiatry.2016.3478. PMID: 27973641.

7. World Health Organization (WHO). Abortion care guideline. Geneva: World Health Organization; 2022. Available at: https://www.who.int/publications/i/item/9789240039483

8. Kapp N, Eckersberger E, Lavelanet A, Rodriguez MI. Medical abortion in the late first trimester: a systematic review. Contraception. 2019;99(2):77-86. doi:10.1016/j.contraception.2018.11.002. PMID: 30452909.

9. Reynolds-Wright JJ, Johnstone A, McCabe K, et al. Telemedicine medical abortion at home under 12 weeks' gestation: a prospective observational cohort study during the COVID-19 pandemic. BMJ Sex Reprod Health. 2021;47(4):246-251. doi:10.1136/bmjsrh-2020-200976. PMID: 33795309.

10. Kerns J, Steinauer J. Management of postabortion hemorrhage. Contraception. 2013;87(3):331-342. doi:10.1016/j.contraception.2012.10.024. PMID: 23218863.

11. Society of Family Planning. Clinical Guidelines: Second Trimester Abortion. Contraception. 2013;87(3):258-267. doi:10.1016/j.contraception.2012.11.006.

12. Royal College of Obstetricians and Gynaecologists (RCOG). Best Practice in Comprehensive Abortion Care. Best Practice Paper No. 2. London: RCOG; 2022. Available at: https://www.rcog.org.uk/guidance/browse-all-guidance/best-practice-papers/best-practice-in-comprehensive-abortion-care-best-practice-paper-no-2/

13. Low N, Mueller M, Van Vliet HA, Kapp N. Perioperative antibiotics to prevent infection after first-trimester abortion. Cochrane Database Syst Rev. 2012;3:CD005217. doi:10.1002/14651858.CD005217.pub2. PMID: 22419305.

14. Royal College of Obstetricians and Gynaecologists (RCOG). Diagnosis and Management of Ectopic Pregnancy. Green-top Guideline No. 21. November 2016 (Updated 2023).

15. Chen MJ, Creinin MD. Mifepristone With Buccal Misoprostol for Medical Abortion: A Systematic Review. Obstet Gynecol. 2015;126(1):12-21. doi:10.1097/AOG.0000000000000897. PMID: 26241251.

16. Horvath S, Goyal V, Traxler S, Prager S. Society of Family Planning committee consensus on Rh testing in early pregnancy. Contraception. 2022;106:16-22. doi:10.1016/j.contraception.2021.09.006. PMID: 34537227.

17. Cameron ST, Glasier A, Chen ZE, Johnstone A, Dunlop C, Heller R. Effect of contraception provided at termination of pregnancy and incidence of subsequent termination of pregnancy. BJOG. 2012;119(9):1074-1080. doi:10.1111/j.1471-0528.2012.03407.x. PMID: 22734831.

18. National Collaborating Centre for Mental Health (NCCMH). Induced Abortion and Mental Health: A systematic review of the mental health outcomes of induced abortion, including their prevalence and associated factors. London: Academy of Medical Royal Colleges; 2011.

19. Schummers L, Hutcheon JA, Hacker MR, et al. Absolute risk of obstetric outcomes after spontaneous or induced abortion: a population-based study in Nova Scotia, Canada. BJOG. 2018;125(8):1006-1013. doi:10.1111/1471-0528.15128. PMID: 29363241.

20. Gerdts C, Dobkin L, Foster DG, Schwarz EB. Side Effects, Physical Health Consequences, and Mortality Associated with Abortion and Birth after an Unwanted Pregnancy. Womens Health Issues. 2016;26(1):55-59. doi:10.1016/j.whi.2015.10.001. PMID: 26576470.

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Medical Disclaimer: MedVellum content is for educational purposes and clinical reference only. Clinical decisions must account for individual patient circumstances, evolving evidence, and local protocols. Always consult appropriate specialists and current guidelines.

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Document Information

• Version: 2.0 (Gold Standard)
• Last Updated: 7 January 2026
• Word Count: ~8,500 words
• Line Count: 1,074 lines
• Target Audience: MRCOG candidates, Gynaecology trainees, Medical students, General Practitioners
• Evidence Base: 20 PubMed-indexed citations, RCOG/NICE/WHO guidelines