Complicated OB Flashcards
Ectopic pregnancy
- define
- risk
- Developing blastocyst implants at a site other than endometrium
- hemorrhage from ectopic preg is leading cause of preg related maternal death in first trimester
Ectopic Pregnancy
- risk factors
- *anything that messes with the tube**
- previous ectopic
- tubal pathology/sx
- prev genital infections
- IUD
- infertility
- multiple sex partners
- smoking
- in-vitro fertilization
- vaginal douching
- extremes of age
Ectopic Pregnancy
- locations including MC
- MC: fallopian tubes (70%)
- cervix
- ovary
- cornea (where fallopian tube enters uterus, doesn’t stretch)
- hysterotomy scar
- abdomen
what is a heterotopic pregnancy?
rare - ectopic AND viable intrauterine pregnancy at the same time
Ectopic Pregnancy
- Dx
if pt presents with suspicious history and/or clinical picture:
- quantitative b-hCG
AND
- findings on high resolution TVUS
Ectopic Pregnancy
- hCG behavior
- rises much slower in most (but not all) ectopic and nonviable IUP than in viable IUP
- falling hCG is sign of failing pregnancy (regardless of its location)
*in 85% of viable IUP, concentrations rise by 66% Q48 hours during first 40 days
Sx that indicate ectopic preg until proven otherwise
- positive preg test
- abdominal/pelvic pain
- +/- bleeding
Ectopic Pregnancy
- sx
Classic (ruptured and non-ruptured):
- abd pain (99%)
- amenorrhea (74%) bc pregnant…
- vaginal bleeding (56%)
- If hemodynamically unstable and/or acute abdomen - means lots of blood loss
- may be able to palpate pelvic mass
Ectopic Pregnancy
- ddx
- UTI
- Kidney stones
- diverticulitis
- appendicitis
- ovarian neoplasm
- endometriosis
- Leiomyomas
- PID/endometriosis
- preg-related: abortion, ruptured corpus luteal cysts, torsed ovary, degenerating fibroids
Ectopic Pregnancy
- medical management
- Methotrexate
- folic acid antagonist, inhibits DNA synthesis and cell reproduction, especially in proliferating cells
- rapidly cleared by kidneys
- dose based on surface area
Ectopic Pregnancy
- indications for sx management
- hemodynamically unstable/ruptured
- CI to methotrexate
- Heterotropic pregnancy
- poor medical candidate
- desire for permanent sterilization
- known tubal disease, planned in vitro fert for future pregnancy
- failed medical therpay
Ectopic Pregnancy
- sx options
Laparoscopic vs. laparotomy
- depends on many factors
- laparoscopic is standard approach
Salpingostomy (open, remove, close) vs. salpingectomy (remove tube with ectopic)
Ectopic Pregnancy
- post sx f/u
- ensure recover
- follow hCG to ensure complete success (all the way to zero!)
- can attempt conception once recovered and hCG is zero
Gestational Trophoblastic Disease
- overview
- Proliferative disorder of trophoblastic cells
- Maternal tumor arises from gestational tissue (not maternal)
- Defined by beta-hCG
Gestational Trophoblastic Disease
- list the four types
- Hydatidiform mole (complete or partial)
- Persistent/invasive gestational trophoblastic neoplasia (GTN)
- Choriocarcinoma
- Placental site trophoblastic tumors
Gestational Trophoblastic Disease
- Risk factors
- extremes of age
- Hx of GTD
- smoking >15 cig a day
- Maternal blood AB, A, B (not O)
- Nulliparity
- Hx infertility
- Use of OCP (very small risk)
Gestational Trophoblastic Disease
- Clinical sx
- vaginal bleeding
- enlarged uterus (rapid proliferation)
- Theca lutein cysts
- anemia
- hyperemesis gravidarum (high level hCG)
- hyperthyroid (hCG mimics TSH)
- preeclampsia before 20 weeks gestation
- vaginal passage of hydronic vesicles
Gestational Trophoblastic Disease
- complete vs. partial mole
Complete
- complete set of chromosomes. 46XX (MC) or 46XY
- more likely to be persistent and turn into cancer
Incomplete
- triploid set of chromosomes (partially molar)
- more likely to have actual fetus
Gestational Trophoblastic Disease
- management of Hydatidiform mole
- Preoperative baseline hCG
- Lab to rule out concomitant morbidity
- D&C evacuation, send tissue to pathology to confirm dx
- Serial hCG until 0
- can attempt conception after hCG 0 for 12 months
Spontaneous Abortion
- Overview
- preg that ends spontaneously before viable gestational age (20 weeks)
- most common complication of early pregnancy
- frequency decreases with increased gestational age
Spontaneous Abortion
- Risk Factors
- age
- previous SAB
- smoking
- cocaine
- NSAIDs (high dose)
- Caffeine (>200 mg a day)
- Prolonged ovulation to implantation
- prolonged time to pregnancy
- low folate
- BMI >18.5
- Untx celiac dz
Spontaneous Abortion
- 5 Etiologies
- Chromosomal abnl
- Congenital abnl
- Trauma (CVS and amniocentesis)
- Host factors
- Unexplained
Spontaneous Abortion
- Chromosomal abnormalities
- 50% SAB
- Most frequent
Autosomal trisomies
polyploidies
Monosomy X - Most arise de novo, rarely d/t inherited karyotypic abnl
Spontaneous Abortion
- 5 Host factors
- Maternal uterine abnl (uterine septum, submucosal leiomyoma, intrauterine adhesions)
- Acute maternal infection (listeria, toxoplasmosis, CMV, rubella, herpes simplex, parvovirus B19)
- Maternal (uncontrolled) endocrinopathies (Thyroid, Cushings, PCOS, DM, corpus luteum dysfunction)
- Teratogens (drug, physical stress like fever, env chemicals)
- Hypercoagulable state (SLE, antiphospholipid syndrome, thrombophilias)
Spontaneous Abortion
- Sx
- amenorrhea
- vaginal bleeding
- pelvic pain
- loss of fetal cardiac activity on US
- cervix may or may not be dilated
Spontaneous Abortion
- List the 5 categories of
- Missed
- Complete
- Incomplete
- Threatened
- Inevitable
Spontaneous Abortion
- Missed
had no idea, in for routine exam and pregnancy no longer viable
- no vaginal bleeding, cervical dilation, or cardiac activity
Spontaneous Abortion
- Complete
- fetal tissue already gone
- yes vaginal bleeding
- no cervical dilation or cardiac activity
Spontaneous Abortion
- Incomplete
- had sig bleeding, part of tissue still remains in uterus
- yes vaginal bleeding and cervical dilation
- no cardiac activity
Spontaneous Abortion
- Threatened
- any vaginal bleeding in first trimester of pregnancy
- yes vaginal bleeding and cardiac activity
- no cervical dilation
Spontaneous Abortion
- Inevitable
- hasn’t occurred yet but def will happen
- Yes vaginal bleeding, cervical dilation
- Yes/No cardiac activity
Spontaneous Abortion
- septic
- fever, chills, other signs of infection
- lower abd tenderness
- boggy, tender uterus w/ dilated cervix
Spontaneous Abortion
- organisms that cause septic
- staph aureus
- gram neg bacilli
- gram pos cocci
- mixed
- anaerobic orgs
- fungi
Spontaneous Abortion
- management
- Expectant: let it pass on its own, usually within first 2 weeks
- Medical: expedite or control over when will occur. U
- Surgical: suction D&C (dilation and curettage) or D&E (dilation and evacuation)
Spontaneous Abortion
- medical management uses what med
Misoprostol
- prostaglandins E1 analog
Spontaneous Abortion
- What must not forget to assess
RH status - will affect future pregnancies
Recurrent pregnancy loss (RPL)
- definition
- three or more consecutive losses of clinically recognized pregnancies prior to 20 weeks gestation
- Excludes ectopic, molar, biochemical pregnancies
- can be primary (never have had live birth) or secondary (had normal first preg and now this)
Recurrent pregnancy loss (RPL)
- risk factors (6)
- previous preg loss
- uterine factors
- immunologic factors
- Endocrine factors
- Genetic
- Thrombophilia and fibrinolytic factors
Recurrent pregnancy loss (RPL)
- Uterine factors
- impaired uterine distention or abnl implantation d/t decreased vascularity, increased inflammation, reduction in sensitivity to steroid hormones
- fibroids (leiomyomas)
- endometrial polyps
- intrauterine adhesions (prior curettage)
- uterine septum
Recurrent pregnancy loss (RPL)
- endocrine factors
- poorly controlled DM
- PCOS
- Hyper- or hypothyroidism
- HyperPRL
Recurrent pregnancy loss (RPL)
- evaluation first step
- Extensive history and PE is paramount
Recurrent pregnancy loss (RPL)
- useful tests
- karyotyping
- uterine assessment
- anticardiolipin abs and lupus anticoagulant
- thyroid tests
- PRL levels
- hgb A1C
Placental Infections
- Two vulnerable portals
- fetal membranes overlying cervix: direct access to pathogens ascending from vagina and cervix
- Placental intervillous space and fetal villi - hematogenous access
Placenal Infections
- Chorioamnionitis overview
- inflammation of chorion and or amnion
- can be sx or silent