ABORTION AND POST ABORTION CARE Flashcards
Definition of abortion
the expulsion or extraction of product of conception (fetus) weighing <500g. – WHO
•Expulsion or extraction of a fetus <28weeks GA (in Nigeria)
AETIOLOGY
Chromosomal abnormalities: responsible for at least 50% of abortions.
Defects like Trisomy( trisomy 16 most common) , Polyploidy, Monosomy.
Structural defects like Translocation, Deletion, Inversion
Maternal infections:
Viral: Rubella, Cytomegalovirus
Parasitic: Toxoplasmosis, Malaria
Acute fever for whatever the cause can induce abortion
Trauma: External trauma to the abdomen or during abdominal or pelvic operations
Endocrine and metabolic factors:
Progesterone deficiency (causes abortion between 8-12weeks)
Diabetes mellitus
Hypothyroidism
Uterine defects:
Congenital/ Uterine anomalies: arcuate uterus, uterine didelphys, bicornuate uterus unicornuate uterus
Acquired: Asherman’s syndrome/ Uterine synechie (intrauterine adhesions)
Drugs and Environmental causes: mifepristone, tobacco, alcohol, arsenic, lead, formaldehyde, bezene and radiation
Immunological causes: Antiphospholipid syndrome, Systemic lupus erythematous,
Cervical incompetence
Idiopathic
Risk factors
Increasing maternal Age, risk increases after 35yrs
Previous miscarriage(s)
Obesity
Chronic (uncontrolled) medical condition – DM, HTN, CKD etc
Social drug use
High impact exercise.
Classification
SPONTANEOUS
INDUCED
- Therapeutic
- Criminal
Spontaneous abortion subtypes?
CoMSIT
COMPLETE MISCARRIAGE
MISSED MISCARRIAGE
SEPTIC MISCARRIAGE
INEVITABLE MISCARRIAGE
INCOMPLETE MISCARRIAGE
THREATENED MISCARRIAGE
RECURRENT MISCARRIAGE
BLIGHTED OVUM/ ANAEMBRYONIC PREGNANCY
UNSAFE ABORTION
Threatened abortion ..diagnosis
Vaginal bleeding is slight or mild, “spotting”.
Pain is typically absent (or slight)
Cervical os is closed
Pregnancy test is positive
USS shows a living fetus.
Inevitable abortion diagnosis
Vaginal bleeding is significant and may be accompanied with clots.
Pain is typically colicky
Cervical os is dilated and the products of conception my be felt through it.
Rupture of membrane prior to the age of viability is also inevitability of abortion
USS shows a living fetus
Incomplete abortion diagnosis
Passage of part of the conception product (fleshy materials, fetus) with some products retained
Bleeding is continuous
Pain is colicky
Uterine size may be less than gestational age
Cervix is opened and retained contents may be felt through it. (It may be plugging the os)
Ultrasonography shows retained contents.
Complete abortion diagnosis
All products of conception have been expelled from the uterus.
Bleeding subsides and gradually diminishes
Pain ceases
Cervical os is closed
Ultrasonography shows empty uterine cavity.
Missed abortion diagnosis
It is defined as “a gestational sac containing a dead embryo or foetus before the age of viability without clinical symptoms of expulsion”.
Bleeding is absent/ spotting
No pain
Cervical os is closed
USS shows either a collapsed gestational sac or absent foetal heart movement.
Septic abortion diagnosis
When any type of abortion complicated by infection.
A common feature of unsafe abortion.
In addition to the clinical picture of the type of miscarriage, there are presence of infecrions – fever, tachycardia, +/- abd pain/ tenderness, foul smelling vaginal discharge etc
Recurrent abortion diagnosis
Recurrent/Habitual Abortion- 3 or more consecutive spontaneous pregnancy losses before the age of viability,
1- 2% of all pregnancies.
If it occurs >20weeks, cervical weakness (cervical incompetence)
Distressing and frustrating condition for both the patient and Dr.
Residive: 2 consecutive spontaneous abortion
Blighted ovum diagnosis
Anaembryonic pregnancy
The embryo stopped or never developed.
Presence of gestational sac without an embryo. mean GSD =/>25mm
A radiological diagnosis (1st trimester)
Vaginal bleeding is absent/ spotting
No Pain
Cervix is closed
Unsafe abortion
Termination of an unintended pregnancy by a person lacking the necessary
Methods of unsafe abortion
Methods for TOP in unsafe abortion
Ingestion - Quinine, blue dye, concoction, postinor2, ampiclox
Injection – quinine, oxytocin, ergot
Insertion – potash, herbs, coat hanger, bicycle spoke, sticks, misoprostol etc
Trauma – blunt abdominal trauma, uterine massage, fall from height