Miscarriage Flashcards
What is a Miscarriage?
Loss of pregnancy before 24 weeks gestation
What is an EARLY vs LATE Miscarriage?
Early miscarriage: 13- wks
Late miscarriage: 13-24 wks
What percentage of pregnancies end up as Miscarriages?
30%
What are the RF for Miscarriages? (5 things)
- Age (both maternal + paternal like 35+)
- Black ethnicity
- Obesity
- Infection (e.g appendicitis)
- Anti-phospholipid syndrome
What is the single most common cause of Miscarriages in 1st trimester?
Chromosomal abn
What should you sus in with all women with bleeding in early pregnancy?
Miscarriage
What are the classifications of Miscarriages? (5 things)
- Missed
- Threatened
- Inevitable
- Incomplete
- Complete
What is a Missed Miscarriage?
Asymptomatic miscarriage
What is a Threatened Miscarriage?
Ongoing viable pregnancy w Bleeding
How long do symptoms of Threatened Miscarriage last?
Days / weeks
What is an Inevitable Miscarriage? (2 things)
- Non-viable pregnancy w Bleeding
- Pregnancy tissue still in uterus
What will an Inevitable Miscarriage become? (2 things)
Incomplete OR Complete miscarriage
What is the difference between INCOMPLETE and COMPLETE Miscarriage?
Incomplete: still has some products of conception left (seen in US)
Complete: all products of conception have been expelled + bleeding STOPPED
Plus Cervical Os still Open in Incomplete
What are the CF of Miscarriages? (2 things)
- Bleeding
- Abd pain
What is the blood like in Miscarriage?
Usually low volume
What are the CF of Miscarriage if there is Excessive bleeding? (4 things)
Haemodynamic instability:
- Pale
- Tachycardia
- Hypotension
- Tachypnoea
What are the CF of Miscarriage @ Abd examination? (2 things)
- Distension
- Localised tenderness
What are the CF of Miscarriage @ Speculum examination? (3 things)
- Products of conception in Cervical canal
- Bleeding
- Cervical os (Open / Closed)
What is the Cervial Os like in a MISSED Miscarriage?
Closed

What is the Cervial Os like in a THREATENED Miscarriage?
Closed

What is the Cervial Os like in an INEVITABLE Miscarriage?
Open

What is the Cervial Os like in an INCOMPLETE Miscarriage?
Open

What is the Cervial Os like in a COMPLETE Miscarriage?
Closed

When is the only times the Cervical Os is OPEN in a Miscarriage? (2 things)
- Inevitable
- Incomplete
OpeN iN iN

What are the CF of Miscarriage @ Bimanual examination? (2 things)
- Uterine tenderness
- Adnexal masses / collections
What are some other Differential Dx of Miscarriage? (3 things)
- Ectopic preg
- Hydatidiform mole
- Cancer (cervical / uterine)
Where should pt with sus Miscarriage be investigated?
EPAU
What investigation gives you a Definitive Dx of Miscarriage?
Transvaginal US
What will you NOT see in a Transvaginal US that will give you a Dx of Miscarriage?
Fetal Cardiac Activity
What weeks will you check for Fetal Cardiac Activity to check for Miscarriage Dx?
5.5 – 6 wks gestation
How can you calculate the weeks of gestation using US?
Crown Rump Length (CRL)

What are the measurements for a definitive Dx of MISSED Miscarriage? (2 things)
- CRL: 7+ mm
- NO Fetal Cardiac Activity
(both together)

Can you make a Dx of Missed Miscarriage if you have NO Fetal Cardiac Activity but the CRL is LESS than 7mm?
No, you have to repeat US 7 days later to confirm
What are the measurements for a definitive Dx of Empty Sac Miscarriage (aka Anembryonic Pregnancy? (2 things)
- Mean Sac Diameter (MSD): 25+ mm
- NO Yolk Sac / Embryonic Pole (Fetal pole in pic)
(both together)

Can you make a Dx of Empty Sac Miscarriage (aka Anembryonic Pregnancy if you have NO Yolk Sac / Embryonic Pole but the MSD is LESS than 25mm?
No, you have to repeat US 10-14 days later to confirm
What investigation can be done if US is not immediately available for Miscarriage?
Serum b-HCG blood test (helps Dx viable n non-viable pregnancy)
What other investigations can you do for bleeding women? (3 things)
- FBC
- Blood group + Rhesus status
- Triple swabs + CRP (esp if pyrexial)
What is the Tx of for Threatened Miscarriages? (2 things)
- Analgesia
- Vaginal micronised progesterone (400mg twice daily) (NICE 2021)
Who should have Vaginal Micronised Progesterone according to NICE 2021?
Woman who is:
- Pregnant (confirmed by scan)
- Bleeding
- Had a previous miscarriage
(All 3)
What does Vaginal Micronised Progesterone do?
Helps preserve Threatened Miscarriage into Live Birth
If Fetal Cardiac Activity is confirmed while on Vaginal Micronised Progesterone, what should you do?
Continue VMP until 16 wks
What should you give if any type of Miscarriage pt (even threatened) is 12+ wks and Rhesus Negative?
Anti-D immunoglobulin
What is FIRST LINE management of Miscarriages?
Expectant (conservative) management (aka jus wait n let it come out naturally)
Who should be offered Expectant management of Miscarriage?
6- wks gestation w bleeding but NO pain
How long should you trial Expectant management for Miscarriages for?
7-14 days
If you do Expectant management of a miscarriage, and symptoms resolve within 7-14 days, what should the pt do next?
Pregnancy test @ 3 wks (if positive come bk)
What are the Advantages of Expectant Management of Miscarriage? (3 things)
- Can go home
- No meds side fx
- No anaesthetic / surgery risk
What are the Disadvantages of Expectant Management of Miscarriage? (4 things)
- Unpredictable timing
- Heavy bleeding + Pain @ passing POC (products of conception)
- Might not work
- Might need transfusion
What are the CI for Expectant management for Miscarriages? (4 things)
- Infection
- Increased risk of haemorrhage (e.g coagulopathy)
- Hx of bad pregnancies
- Pt doesn’t want to
What are the MEDICAL management options for Miscarriages? (3 things)
- Misoprostol (vaginal / oral) (vaginal is preffered)
- Analgesia (PRN)
- Anti-emetics (PRN)
What is Misoprostol? (2 things)
- Synthetic prostaglandin that stimulates Cervical Ripening + Uterine contractions
- Used as Medical management for miscarriages
What should you give 24-48 hours before Misoprostol?
Mifepristone
What is Mifepristone?
Anti-progestational steroid (blocks progesterone)
(progesterone helps pregnancy, remember dat lecturer said its PRO-GEST-erone)
What should you do after giving Misoprostol?
Pregnancy test @ 3 weeks
What happens if Pregancy test @ 3 wks after Misoprostol is still Positive?
Specialist review
What are the Advantages of Medical Management of Miscarriage? (2 things)
- Can go home
- No anaesthetic / surgery risk
What are the Disadvantages of Medical Management of Miscarriage? (3 things)
- Meds side fx: D+V
- Heavy bleeding + Pain @ passing POC (products of conception)
- Might not work (might need emergency surgical intervention)
What should you do if Expectant and Medical Management of Miscarriages fail?
Surgical management
What are the 2 main options for Surgical management of Miscarriages?
- Manual vacuum aspiration (under LOCAL) (if 12- wks)
- Evacuation of Retained Products of Contraception (ERPC) (under GENERAL)
Who is Manual vacuum aspiration more suitable for?
Parous women (given birth b4)
What are the Indications for Surgical management of Miscarriage? (3 things)
- Haemodynamically unstable
- Infected tissue
- Gestational trophoblastic disease
What are the Advantages of Surgical management of Miscarriage? (2 things)
- Planned procedure (helps pt cope)
- Pt unconscious (under general)
What are the Disadvantages of Surgical management of Miscarriage? (7 things)
- Infection (endometriosis)
- Bleeding
- Ashermen’s syndrome (scar tissue aka adhesions form inside uterus)
- Uterine perforation
- Bowel / bladder damage
- Retained POC (products of contraception)
- Anaesthetic risk
What is given before Surgical management of Miscarriage and why?
Misoprostol, to soften cervix
When can sexual intercourse resume after a miscarriage?
Once symptoms have completely settled
When can a pt start trying to conceive again after a miscarriage?
@ 4-8 wks bc that’s when menstruation will resume