Video summary

Abortamento (definição, tipos e conduta) - Aula de Obstetrícia #MR

Main summary

Key takeaways

Educational

Main ideas / lessons (structured)

1) Definition of miscarriage

  • Miscarriage is defined as loss of pregnancy before viability—i.e., before 20 weeks (some references use 22 weeks).
  • It represents interruption of pregnancy prior to viability.

2) Causes / risk factors mentioned

  • Uterine anomalies → can cause incompatibility of the fetus within the uterus.
  • Endocrine disorders → can be related to miscarriage.
  • Maternal diseases, including:
    • Hypertension
    • Diabetes
    • Infections (especially early in gestation)
  • Smoking is highlighted as an important factor.
  • Most important cause (as stated):
    • Aneuploidy, particularly chromosomal/anatomical anomalies

3) Types of abortion based on cervical status (the “six types” framework)

The instructor states there are six types, grouped as:

  • 3 types with an open cervix
  • 3 types where the cervix is “not open” (closed)

Note: The subtitle text becomes incoherent in places, but the following categories and clinical logic are still conveyed.

A) Types with closed cervix (3 types described)

1. Threatened abortion (bleeding with pregnancy viable / ongoing)

Main characteristics:

  • Patient is still pregnant (or known risk) and has bleeding in the first half of pregnancy.
  • Embryo is present
  • Fetal heartbeat is present
  • Uterus size matches gestational age
  • Cervix is closed (as described)

Differential approach:

  • If the patient presents with bleeding and pregnancy is not known:
    • Always request a beta-hCG test
  • If ultrasound shows an empty uterus and concern for pregnancy:
    • Differentiate from ectopic pregnancy
    • If beta-hCG > 1000, a gestational sac should typically be visible in the uterus
    • If nothing is seen, consider pregnancy location elsewhere

Conduct / management:

  • Expectant management (observation) only.
  • Provide clear instructions; hospitalization is not needed because there’s nothing to prevent progression if it continues.

2. Missed abortion / retained products (closed cervix with no heartbeat)

Main characteristics (as stated):

  • Cervix remains closed
  • Embryo is inside the uterus
  • No fetal heartbeat
  • Uterus diameter is smaller than gestational age
    • Rationale given: the body begins to absorb the nonviable fetus → uterus becomes smaller

Management options:

  • Assess uterine contents
  • Possible interventions:
    • Uterine curettage (more invasive)
    • Inducing natural expulsion (by attempting labor induction)
  • Choice depends on patient condition and preference.

3. Incomplete / “expelled” scenario with closed cervix after passage (described generally)

The subtitle suggests a case where:

  • Patient reports passage / elimination of material from the vagina
  • Likely expulsion has already occurred
  • Cervix is already closed
  • Ultrasound may show:
    • Empty uterus but smaller than expected for gestational age
    • Mention of endometrial thickness < 15 mm (described as under expected)

Differential logic repeated:

  • Confirm pregnancy status and exclude ectopic pregnancy when uterus is empty.

B) Types with open cervix (3 types described)

1. Inevitable abortion (open cervix, ongoing process)

Main characteristics:

  • Open cervix
  • Embryo may still be alive:
    • May or may not have a fetal heartbeat
  • Uterine findings may be compatible or not with gestational age (as described)
  • The process is “inevitable,” meaning progression cannot be halted once the cervix is open.

Suggested management logic (as described):

  • If diagnosis is inevitable abortion in progress, management becomes active rather than observation (contrasted with threatened abortion).

2. Infected abortion (open cervix + infection)

Key features:

  • Open cervix
  • Infectious condition
  • Possible findings (as described):
    • Softened uterus
    • Painful uterus
    • Vaginal discharge
  • Usually associated with retained products:
    • “To remove these ovular remains … indicates an infected abortion”

Conduct / treatment for infected abortion:

  • Antibiotics
  • Dilation
  • Timing/approach for removing retained tissue:
    • Surgical management options
      • Aspiration preferred (less trauma, less risk of perforation)
      • Aspiration is stated as an option up to 12 weeks
        • Beyond 12 weeks, risk of perforation increases due to more advanced products
      • Curettage after 12 weeks (described as classic/best-known)
    • Non-surgical medication options
      • Misoprostol for >12 weeks, if there is a favorable chance to administer medication
      • Alternative mentioned: oxytocin

3. Incomplete abortion (retained products with open cervix)

Main characteristics (as conveyed):

  • Cervix open
  • Some fetal/ovular parts may have been expelled, but ovular remains remain
  • Ultrasound may show “ovular remains” → indicates incomplete abortion

Management concept:

  • Removal of retained tissue is implied, and in the infected context it is emphasized.

4) Recurrent miscarriage (repeat pregnancy loss)

Definition (as stated)

  • Recurrent miscarriage = 3 or more miscarriages.
  • From 3 onwards, evaluation/investigation is recommended to find the cause.

Causes presented (two main categories)

1. Cervical insufficiency

Mechanism:

  • Cervix shows dilation and becomes short
  • Miscarriage occurs later (as stated) when fetal weight increases

Typical history given:

  • Painless cervical dilation in the second trimester

Risk factors mentioned:

  • Prior cervical procedures such as conization (cone-shaped removal of tissue at the transition zone)
  • History of curettage

Treatment:

  • Uterine cerclage to keep the cervix closed until the appropriate time.

2. Antiphospholipid syndrome (APS)

Clinical suspicion triggers (as described):

  • Early onset of pre-existing conditions
  • Serious presentations
  • Unexplained thrombotic event in young women without other risk factors
  • Unexplained intrauterine growth restriction
  • Deaths at young ages without other explanation
  • Recurrent miscarriages

Treatment approach mentioned:

  • Anticoagulation
    • Therapeutic anticoagulation described as “only for patients who have already had thrombosis”
    • APS has prophylactic/therapeutic distinctions (subtitle unclear, but the key point is anticoagulation strategy based on whether thrombosis already occurred)

Speakers / sources featured

  • No named speakers are provided in the subtitles; narration appears to be from the course instructor.
  • No external sources are directly cited (though “some references say 22 weeks” is mentioned without naming specific references).

Original video