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OB/GYN Student Study Guide
Abbreviation and Definitions
LMP: last menstrual period
PMP: previous menstrual period
EDC: estimated date of confinement
GP: gravida, para: Gravida is how many pregnancies; Para is the number of
times the uterus is emptied
TPAL: (“Tennessee Power and Light”): Term (#) (the number
of term pregnancies twins count as 1 pregnancy!) Preterm
(#) Abortions (elective or spontaneous #) Living # (all children
counted here)
G1P1002 = Twins
CKC: cold knife conization LEEP: loop electrocautery excision procedure
BTL: bilateral tubal ligation D&C: dilation and currettage POC: products of conception
Hystero: uterus TVH: transvaginal hysterectomy TAH: transabdominal hysterectomy
LAVH: laparoscopic assisted vaginal hysterectomy TLH: total laparoscopic hysterectomy
BSO: bilateral salpingoopherectomy
Oligo: few trachelo: cervix
Hyper: too much culpo: vagina
Hypo: not enough ectomy: removal of
Meno: menses ootomy: incision
Metr: uterus ostomy: making a new opening
Rrhea: flow centesis: needle into something
Rrhagia: excess flow polymenorrhea: cycle every 20 days
PROM: premature rupture of membranes PPROM: preterm premature rupture of membranes
SVD: spontaneous vaginal delivery LTCS: low transverse cesarean section
R LTCS: repeat LTCS FAVD: forceps assisted vaginal delivery VBAC: vaginal birth after c/s
VAVD: vacuum assisted vaginal delivery VMI: viable male infant VFI: viable female infant
SAB: spontaneous abortion (miscarriage) EAB: elective abortion
IUFD: Intrauterine fetal demise
ASCUS: atypical squamous cells of undetermined significance
LGSIL: low grade squamous intra epithelial lesion
HGSIL: high grade squamous intra epithelial lesion
1
st
Trimester: w0 w12 gestational age
2
nd
Trimester: w12 28
3
rd
Trimester: w28 40
Previable: less than 20 weeks; if delivered considered Abortion, not SVD
Preterm: 24-37 w
Term: 37 42 w
Embryo: fertilization to 8 weeks
Fetus: 8 weeks to birth
Infant: delivery to 1 year
Post Dates: > 41-42 weeks

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Pregnancy and Prenatal Care
Diagnosis: home UPT: highly sensitive at the time of missed cycle (positive at 8-9 d); bHCG
rises to 100,000 by 10 weeks and levels off at10,000 at term; can get gestational sac as early as
5 weeks. At that point your bHCG should be 1500 to 2000.
Discriminatory Zone: This means that when BHCG is 1200-1500, evidence of a pregnancy
should be seen on transvaginal ultrasound. When the BHCG is 6000, you can see evidence on a
transabdominal ultrasound.
FHT: seen at ~6 weeks on US; Doppler FHT at 12 w
Gestational Age: days and weeks from LMP
Dating Age (not used except on tests!): weeks and days from fertilzation; GA 2 weeks greater
than DA
Naegle’s Rule: For EDC: LMP 3 months + 7 days + 1 year
Ultrasound: can be 1 week off in the first trimester, 2 weeks off in the second trimester, 3 weeks
in the third trimester so… if your US differs from the EDC by LMP more than this, accept the US
dating over the LMP dating. In the first half of the first trimester, use the Crown Rump Length
(CRL) which is within 3 5 days of accuracy.
Doppler: can get FHT (fetal heart tones) at 12 weeks
Quickening: at 16 20 weeks (mom feels the baby move)
Signs and Sx of Pregnancy:
a. Chadwick’s Sign-blue hue of cervix
b. Goodell’s Sign softening and cyanosis of cx at 4 weeks
c. Laddin’s Sign – softening of uterus after 6 weeks
d. Breast swelling and tenderness
e. Linea nigra
f. Palmar erythema
g. Telangiectasias
h. Nausea
i. Amenorrhea, obviously
j. Quickening

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 OB/GYN Student Study Guide Abbreviation and Definitions LMP: last menstrual period PMP: previous menstrual period EDC: estimated date of confinement GP: gravida, para: Gravida is how many pregnancies; Para is the number of times the uterus is emptied TPAL: (“Tennessee Power and Light”): Term (#) (the number of term pregnancies – twins count as 1 pregnancy!) Preterm (#) Abortions (elective or spontaneous #) Living # (all children counted here) G1P1002 = Twins CKC: cold knife conization LEEP: loop electrocautery excision procedure BTL: bilateral tubal ligation D&C: dilation and currettage POC: products of conception Hystero: uterus TVH: transvaginal hysterectomy TAH: transabdominal hysterectomy LAVH: laparoscopic assisted vaginal hysterectomy TLH: total laparoscopic hysterectomy BSO: bilateral salpingoopherectomy Oligo: few trachelo: cervix Hyper: too much culpo: vagina Hypo: not enough ectomy: removal of Meno: menses ootomy: incision Metr: uterus ostomy: making a new opening Rrhea: flow centesis: needle into something Rrhagia: excess flow polymenorrhea: cycle every 20 days PROM: premature rupture of membranes PPROM: preterm premature rupture of membranes SVD: spontaneous vaginal delivery LTCS: low transverse cesarean section R LTCS: repeat LTCS FAVD: forceps assisted vaginal delivery VBAC: vaginal birth after c/s VAVD: vacuu ...
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