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Early Pregnancy Problems Jacqueline Woodman
M.B.,Ch.B.; Dipl Obst; MRCOG; D.Phil (Oxon)
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Introduction Bleeding in early pregnancy and miscarriage
Ectopic Pregnancy Gestational Trophoblastic Disease Hyperemesis Gravidarum
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Bleeding in Early Pregnancy
& Miscarriage
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Definitions Remember – MISCARRIAGE not ABORTION
Threatened miscarriage Vaginal bleeding at < 24 weeks gestation (cervix closed) Inevitable miscarriage Bleeding, pregnancy still in uterus (cervix open) Incomplete miscarriage Retained products of conception in uterus (cervix open) Complete miscarriage Uterus empty (cervix closed) Delayed miscarriage Gestational sac with/without fetus present (but no FH), cervix closed
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Miscarriage Approximately 30% of pregnant women will experience bleeding in early pregnancy At least 50% of women with threatened miscarriage will have continuing pregnancy Miscarriage occurs in 15-20% of clinically diagnosed pregnancies
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Causes of miscarriage Genetic abnormalities Progesterone deficiency?
Maternal illness e.g. diabetes Uterine abnormalities ‘Cervical incompetence’
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History LMP Bleeding: amount (spotting/gush), clots
Pain: type – crampy/sharp/dull location: lower abdomen, shoulder tip, back pain Passed products?
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Examination ABC (vital signs) stable or cervical shock Abdominal
tender/ rebound tenderness Vaginal (speculum) Cervix: open/closed Amount of bleeding Products visible? TAKE IT OUT!
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Speculums Cusco speculum Sims speculum
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Investigations Ideally in dedicated ‘Early Pregnancy Assessment Unit’
Ultrasound Measurement of serum βhCG Determination of blood & Rhesus group FBC, G&S and admit if significant bleeding Psychological support
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Ultrasound Expect to see viable fetus from around 6.5 weeks transabdominally, 5.5 weeks transvaginally Other possible appearances ‘POC’ Incomplete miscarriage Empty uterus Not pregnant Too early gestation Extrauterine pregnancy Complete miscarriage Empty sac Non-viable pregnancy Fetal pole with no FH If tiny, may be very early gestation Delayed miscarriage
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Gestational sac
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Very early..
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Normal 8-9 wk pregnancy
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Empty sac
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Measurement of βhCG Not necessary if diagnosis unequivocal on scan
Useful as part of investigations to diagnose/exclude extrauterine pregnancy/miscarriage Doubling time approx 2 days in viable pregnancy Halving time 1-2 days in complete miscarriage Should see fetal pole with βhCG of
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Management of Incomplete Miscarriage
Conservative Risk of bleeding, infection, retained POC needing ERPC, unpredictable Medical (Prostaglandin e.g. Misoprostol) Risk of bleeding, retained POC, need for ERPC Surgical [Evacuation of retained products of conception (ERPC)] Suction curettage usually under GA, risk of bleeding, infection, perforation of uterus, longer term complications (e.g. Ashermans syndrome)
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Ectopic Pregnancy
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Definition Pregnancy occurring outside uterine cavity
Approx 0.5-1% of pregnancies – rate increasing Maternal mortality in 1/2500 ectopic pregnancies (13 deaths in UK)
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Site Fallopian tube Ovary Abdominal cavity Cervix
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Risk factors Previous PID Previous ectopic pregnancy
Previous tubal surgery (e.g. sterilisation, reversal) Pregnancy in the presence of IUCD
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Symptoms Acute Chronic (Atypical)
Low abdominal pain – peritoneal irritation by blood Vaginal bleeding – shedding of decidua Shoulder tip pain – referred from diaphragm Fainting - hypovolaemia Chronic (Atypical) Asymptomatic, gastrointestinal symptoms, back pain
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Signs Shock – tachycardia, hypotension, pallor Abdominal tenderness
Adnexal tenderness Adnexal mass None
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Diagnosis Ultrasound Serum βhCG Laparoscopy
Empty uterus, adnexal mass, free fluid in POD, rarely live pregnancy outside of uterus Serum βhCG Suboptimal rise, plateau Laparoscopy
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Ultrasound
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Left Ectopic on laparoscopy
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Management Medical Surgical ‘Conservative’ Methotrexate
Laparoscopic salpingectomy / salpingotomy Laparotomy ‘Conservative’ Self resolving with close watch
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Gestational Trophoblastic Disease
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Hydatidiform Mole 1 in 1000 pregnancies Partial Complete
Associated with fetus, triploid Complete No fetal pole, diploid chromosomes paternally derived
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Presentation Asymptomatic – incidental finding at dating or anomaly USS Vaginal bleeding Hyperemesis gravidarum Uterus large for dates
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Diagnosis Ultrasound (Snow storm appearance)
Histology after surgical evacuation
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Snowstorm appearance
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Hydatidiform Mole after hysterectomy
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Follow-up Monitor via regional centres – London, Sheffield, Dundee
3% risk choriocarcinoma following complete mole, less following partial mole Choriocarcinoma may follow any subsequent pregnancy – miscarriage, TOP, term delivery Choriocarcinoma is curable Monitor βhCG levels to check resolution – for 6 months to 2 years Avoid pregnancy for minimum 6 months or until all clear
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Hyperemesis Gravidarum
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Hyperemesis Gravidarum
Nausea/vomiting in pregnancy is normal – ‘morning sickness’ Rarely excessive – hyperemesis gravidarum Related to level of βhCG
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Associated Factors UTI Multiple pregnancy Molar pregnancy
Socio-economic factors
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Investigations Renal function Liver function FBC Urinalysis and MSU
Ultrasound
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Consequences & Management Dehydration Electrolyte imbalance
Metabolic alkalosis, hypokalaemia, hypernatremia Oesophageal tears (Mallory Weiss) Thrombosis DVT/PE/Cerebral sinus Weight loss Vitamin deficiency (vit B1- thiamine) Wernicke's encephalopathy Psychological impact IV fluids Electrolyte replacement Antiemetics Thromboprophylaxis Dietary advice Vitamin supplementation Steroids Antibiotics if UTI Termination of pregnancy
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in CONCLUSION GYNAECOLOGICAL EMERGENCIES 1. MISCARRIAGE 2. ECTOPIC
3. PELVIC SEPSIS 4. OVARIAN TORSION
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