PUL Flashcards
•The most common final outcome among women diagnosed with PUL is ……..
spontaneous resolution of pregnancy without the need for treatment (50–70%)
A serum hCG increase over 48 hours of more than….. (the hCG ratio >…) is a good predictor of an intrauterine pregnancy.
66%, 1.66
A decrease in hCG of >13% or a hCG ratio of <0.87 has been found to have a sensitivity of 92.7% and a specificity of 96.7% for the prediction of a failing PUL.
What is the minimal rise to predict normal viable IUP ?
However, 15% of normal IUPs show a suboptimal increase and the minimum rise to predict normal viable IUP is 53%
The chance of a repeat ectopic pregnancy in a woman with a history of one ectopic pregnancy is approximately
10%
In a woman with two or more prior ectopic pregnancies, the risk of recurrence increases to more than
25%
scar ectopic pregnancy incidence
occurred in 52 % of cases following prior one caesarean section, 36 % in prior two caesarean section and 12 % after three or more prior Caesarean section
Methotrexate selection criteria:
included hemodynamically stable women with ß-hcg level of ≤5000 mIU/ml, adnexal mass ≤4 cm, absent cardiac activity and hemoperitoneum less than 100 ml.
The success rate of single dose methotrexate therapy
was 65%
what is percentage of tubal ectopic pregnancies? and each part from the most common to the least.
Nearly 95%, The ampulla (70 percent) is the most frequent site, followed by isthmic (12 percent),
fimbrial (11 percent), and interstitial tubal pregnancies (2 percent)
The natural incidence of these heterotopic
pregnancies approximates
1 per 30,000 pregnancies, with assisted reproductive technologies (ART), their incidence is 9 in 10,000
pregnancies
After one previous ectopic pregnancy, the chance of
another is increased ……fold
x five
one episode of salpingitis can be followed by a subsequent ectopic pregnancy in up to … percent of women
9 percent of women
Potential Outcomes of ectopic pregnancy
tubal rupture, tubal abortion, or
pregnancy failure with resolution.
hematosalpinx, rarely an aborted fetus will implant on a peritoneal surface and become an abdominal pregnancy
chronic ectopic pregnancy B-hcg:
abnormal trophoblast dies early, and thus negative or
low, static serum β-hCG levels are found.
typically rupture late, if at all, but commonly form a complex pelvic mass, which often is the reason prompting diagnostic surgery.
differential diagnosis for abdominal pain coexistent with pregnancy
Pain may derive from uterine conditions such as miscarriage, infection, degenerating or enlarging leiomyomas, or round-ligament pain. Adnexal disease
may include ectopic pregnancy; hemorrhagic, ruptured, or torsed ovarian masses; salpingitis; or tuboovarian abscess. Last, appendicitis, cystitis, renal stone, and
gastroenteritis are more common nongynecological sources of lower abdominal pain in early pregnancy.
an intrauterine gestational sac is usually visible
between 4½and 5 weeks
The yolk sac appears between
5 and 6 weeks
a fetal pole with cardiac activity is first detected at
5½ to 6 weeks
a trilaminar endometrial pattern can be
diagnostic for
ectopic pregnancy
(Its specificity is 94 percent, but with a sensitivity of only 38 percent)
remember that
Anechoic fluid collections, which might normally suggest an early intrauterine gestational sac, may also be seen with ectopic pregnancy. These include pseudogestational sac and decidual cyst.
a pseudosac is
a fluid collection between the endometrial layers and conforms to the cavity shape. If a pseudosac is noted, the risk of ectopic pregnancy is increased.
a decidual cyst is identified as
an anechoic area lying within the endometrium but remote from the canal and often at the endometrialmyometrial border.
The sonographic diagnosis of ectopic pregnancy (adnexal findings)
If fallopian tubes and ovaries are visualized and an extrauterine yolk sac, embryo, or fetus is identified, then an ectopic pregnancy is confirmed. In other cases, a hyperechoic halo or tubal ring surrounding an anechoic sac is seen.
the single best prognostic indicator of successful treatment with single-dose MTX
initial serum β-hCG level.
reported failure rates are 1.5 percent if the initial serum β-hCG concentration is <1000 mIU/mL; 5.6 percent at 1000 to 2000 mIU/mL; 3.8 percent at 2000 to 5000
mIU/mL; and 14.3 percent when levels range between 5000 and 10,000 mIU/mL
ectopic pregnancy size and medical management:
93-percent success rate with single-dose MTX when the ectopic mass was <3.5 cm. This compared with success rates between 87 and 90 percent when the mass was >3.5 cm. Last, failure rates rise if cardiac activity is seen, with an 87-percent success
rate in such cases.
Criteria that may aid differentiation btw interstitial pregnancy and eccentric IUP include:
an empty uterus, a gestational sac seen separate from the endometrium and >1 cm away from the most lateral edge of the uterine
cavity, and a thin, <5-mm myometrial mantle surrounding the sac
CESAREAN SCAR PREGNANCY INCIDENCE
Its incidence approximates 1 in 2000 normal pregnancies and has increased along with the cesarean delivery rate
4 criteria for Caesarean scar pregnancy DX:
in CSP An empty uterine cavity is identified by a bright hyperechoic endometrial stripe.
An empty cervical canal is similarly identified.
Last, an intrauterine mass is seen in the anterior part of the uterine isthmus. Myometrium between the bladder and gestational sac is absent or thinned (1 to 3
mm).
potential long-term complication of caesarean section
Uterine arteriovenous malformations
CERVICAL PREGNANCY risk factors:
Predisposing risks include ART and prior uterine curettage
SONOGRAPHIC FINDINGS OF cervicoisthmic intrauterine pregnancy:
(1) an hourglass uterine shape and ballooned cervical canal; (2) gestational tissue at the level of the cervix.
(3) absent intrauterine gestational tissue; (4) a portion of the endocervical canal seen interposed between the gestation and the endometrial canal.
CLUE TO HELP IN DIAGNOSIS OF ABDOMINAL PREGNANCY:
maternal serum alpha-fetoprotein levels
can be elevated.
Clinically, abnormal fetal positions may be palpated, or the cervix is displaced
Sonographically, the diagnosis is often missed Oligohydramnios is common but nonspecific. Other clues include a fetus seen separate from the uterus or eccentrically positioned within the pelvis; lack of
myometrium between the fetus and the maternal anterior abdominal wall or bladder; extrauterine placental tissue; or bowel loops surrounding the gestational sac.
MR imaging can help confirm the diagnosis and provide maximal information concerning placental implantation