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Introduction
Spontaneous abortion is the most common complication of early pregnancy incidence : 8 to 20 percent
History Live Birth : 5 percentafter 15 weeks is low (about 0.6 percent)
Risk Factors
advanced maternal age
previous spontaneous abortion
maternal smoking
The most important risk factor for spontaneous is maternal age
age 20 to 30 years (9 to 17 percent),
age 35 years (20 percent), age 40 years (40 percent), and age 45 years (80 percent)
History of Abortion
The risk of miscarriage in future pregnancy is approximately 20 percent after one miscarriage
28 percent after two consecutive miscarriages,
and 43 percent after three consecutive miscarriages
Other Risk Factors
Gravidity short inter pregnancy intervals in
multi gravid women
Prolonged time to conception
Smoking
Alcohol
Other Risk Factors
Cocaine Prolonged ovulation to
implantation interval :>10 days between ovulation and implantation
: result from
1-fertilization of an aging ovum,
2-delayed tubal transport,
3- abnormal uterine receptivity
Other Risk Factors
Non steroidal anti inflammatory drugs
(not acetaminophen)
Caffeine Based upon systematic reviews, very high levels (ie, 1000 mg, or 10 cups of coffee, over 8 to 10 hours).
Second-Trimester Pregnancy Loss
What do we know?
What is a late miscarriage?
miscarriage as one that happens after 12 weeks and before 24 weeks
Second-Trimester Pregnancy Loss
1-Spontaneous delivery Cervical
insufficiency/incompetence abnormal shape, fibroids (NHS
Choices 2009b) Preterm Labor/PPROM 2-Fetal Demise
Diagnosis
It’s never really easy to cope with any pregnancy loss
born alive before passing away.
Cervical insufficiency
previous cervical damage,
LEEP, laser ablation and cold knife conization.
(A standard cervical biopsy does not cause insufficiency.)
It can also occur in women with congenital uterine malformations, such as bicornuate uterus or unicornuate uterus,
DES.
Some research indicates that cervical insufficiency may be more likely in women who have had multiple D & C procedures
Symptoms:
Unfortunately, cervical insufficiency usually has no symptoms in the first affected pregnancy.
The cervix dilates without any contractions
the waters break and the baby is born
Women may have some spotting or bleeding, but usually by the time the condition is detected, it is too late to stop the preterm birth
Diagnosis Methods:
Cervical insufficiency is not common not do routinely screen for the condition during pregnancy,
except
strong risk factors (such as a known uterine malformation
previous second-trimester miscarriage
In women at high risk, doctors can monitor the cervix by using vaginal ultrasound,
but ultrasound does not always accurately detect cervical changes
Other Risk Factors
•Listeriosis from food poisoning.
group B streptococcus Toxoplasmosis
•A viral infection, fever
Other Risk Factors
chorionic villus sampling (CVS).
Amniocentesis
twin pregnancies,
Second-Trimester Pregnancy Loss
Fetal Demise Intrauterine fetal demise
(Unexplained fetal death after 10 weeks)
Fetal Demise: Fetal Risk Factors
–Anomalies •Structural
•Chromosomal–Infection/inflammation
•Ascending bacterial infection triggers cytokine cascade
–Multi fetal •Fetal death rate 18.5 vs6.2/1000
Fetal Demise: Placental/Umbilical Cord Risk factors
–Abruption –Cord accident –Utero placental insufficiency
Fetal Demise: Maternal Risk Factors
–Vascular disease
•Diabetes
•SLE
•HTN
•Renal and thyroid disease
–Thrombophilia
•Inherited
•Acquired
Fetal Demise: Maternal Risk Factors
–Social habits
•Weight (>87kg -OR 2.1)
•Smoking (OR 1.5)
•Marital status (single -OR 1.6)
–Age •>35yo (OR 3.5)
–Race •Black (OR 1.6)
Inherited Thrombophilia
•Factor V Leiden mutation
•ProthrombinG20210A gene mutation (heterozygous)
•Plasminogen activator inhibitor-1 4G/4G mutation (homozygous)
• Methylene- tetrahydrofolateReductase(C677T MTHFR) •Anti thrombin III deficiency
•Protein S deficiency
•Protein C deficiency
Second trimester pregnancy loss
Contribution of inherited thrombophiliato pregnancy loss and the role of prophylaxis to prevent recurrence is controversial
Acquired Thrombophilia :
Anti phospholipid Syndrome
•Autoimmune disorder characterized by moderate- to-high levels of circulating antiphospholipid antibodies
•Clinical features include venous or arterial thrombosis, autoimmune thrombocytopenia, and fetal loss
•It can occur as a primary condition, or with other autoimmune diseases such as lupus
In the loss of a stillbirth
pathologic examination of the fetus and placenta is advocated;
chromosomal analysis should also be performed, if possible.
Cultures should be ordered only if the patient has clinical symptoms of a specific infection.
Particularly, asymptomatic patients should not be treated for bacterial vaginosis
Pre procedure preparation
Prophlactic antibiotic >>>no Cervical preparation with
osmotic dilators>>>>no Induced fetal
demise>>>>yes Anesthesia>>>>yes
Misoprostol range of 200 – 800 micrograms
Induction to abortion interval : 12-16 hours
Better to be used with Mifepristone
- cervical dilatation
- decidua necrosis
- increased PG production
- increased sensitivity to PG
ACOG protocols
Mifepristone, 200 mg, administered orally followed by
•Misoprostol, 800 mcg, administered vaginally, followed by 400 mcg administered vaginally or sublingually every three hours for up to a maximum of five doses.
OR
•Misoprostol, 400 mcg, administered buccally every three hours for up to a maximum of five doses also may be used.
ACOG protocols
If mifepristone is not available
•Misoprostol, 400 mcg, administered vaginally or sublingually every three hours for up to five doses. Vaginal dosage is superior to sublingual dosage for nulliparous women.
OR
•A vaginal loading dose of 600 to 800 mcg of misoprostol followed by 400 mcg administered vaginally or sublingually every three hours may be more effective.
ACOG protocols
If misoprostol is not available
•Oxytocin, 20 to 100 units, infused intravenously over three hours, followed by one hour without oxytocin to allow diuresis. Oxytocin dosage may be slowly increased to a maximum of 300 units over three hours.
Complications
1. Incomplete abortion 1-7%
2. Retained placenta
3. Uterine rupture
4. Cervical laceration
5. Infection
6. hemorrhage
Hospitalization In most practices, second trimester
abortion over 16 weeks is completed with misoprostol
and12wks in spontaneous abortion
Some parents want to see their baby but are worried about what he or she might look like
Next Pregnancy
The history should include symptoms and signs of pregnancy loss,
chronic maternal medical conditions that may contribute to pregnancy loss,
family history that suggests genetic problems,
medication use as an indication of underlying illness,
environmental exposures,
substance abuse,
trauma,.
Next Pregnancy
and obstetric history.
A detailed review of the pregnancy should be performed, including
vital signs,
weight gain,
dating parameters, ultrasonography, and laboratory tests.
Next Pregnancy
diabetes, thyroid disease, or hypertension.
Nutritional education and folic acid supplementation can improve maternal illness and help prevent neural tube defects.
Patients who have had an unexplained pregnancy loss should be offered genetic counseling with an option for karyotype analysis, even though these interventions have few measurable outcomes.
Next Pregnancy
Smoking, alcohol consumption,
and substance abuse
trauma is an uncommon
Thanks for your attention
