Intro to OB Flashcards

1
Q
FHT/ FHR
SVE
SSE
PIH
DT
FS
FOC
A
FHT or FHR = fetal heart tones / rate
SVE = sterile vaginal exam
SSE = sterile speculum exam
PIH = pregnancy-induced hypertension
DT = Doptone (doppler)
FS = fetoscope
FOC = father of child    MOC = mother of child
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2
Q
ROM
AROM
PROM
PPROM
SROM
BOW
IBOW
BBOW
A
ROM = rupture of membranes
AROM = artificial ROM
PROM = premature (prior to onset of labor) ROM
PPROM = Pre-term PROM (<37 weeks)
SROM = spontaneous ROM
BOW = “bag of waters”
IBOW = intact BOW
BBOW = “bulging” BOW
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3
Q
FH
GDM
IDM
UC
GBS
TOCO
A
FH = fundal height (in cm – SP to top of fundus) – only valid after 20 weeks
GDM = gestational diabetes
IDM = infant of a diabetic mother
UC = uterine contraction
GBS = group B beta-hemolytic streptococcus
TOCO = tocodynamometer – records UC’s
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4
Q
CX
NST
CST
VTX
BPD
EFW
A
CX or Cx = cervix
NST = non-stress test
CST = contraction stress test
VTX or Vtx = baby’s occipital region
Vtx can also mean baby is coming “head first”
BPD = biparietal diameter
EFW = estimated fetal weight
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5
Q
EDC
EGA
QHCG
LBW
IOL
LGA/ SGA
A

EDC = estimated date of “confinement” = the “due date”
EGA = estimated gestational age (in weeks)
QHCG = quantitative human chorionic gonadotropin
LBW = low birth weight (<2500 gm)
IOL = induction of labor
LGA, SGA = large/small for gestational age

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6
Q

SOOL
FLM
IAI

A
SOOL = spontaneous onset of labor
FLM = fetal lung maturity
IAI = intraamniotic infection - chorioamnionitis
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7
Q

The days and weeks

A

Weeks gestation = COMPLETED weeks from the first day of the LNMP

Accepted notation is to use a “sevenths” fraction: 31 weeks, 5 days = 31 5/7 weeks

Verbally, this is usually stated as “31 and 5”

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8
Q

Leopold’s

A

Leopold’s maneuvers
Used to determine LIE and PRESENTATION

(palpation of the baby)

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9
Q

Clinical jargon - station

A
“Station” = baby’s head relative to ischial spine
0 = at the spine
-1, -2, -3, -4 = cm ABOVE the spine
\+1, +2, +3, +4 = cm BELOW the spine
“Descent” = of baby’s head
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10
Q

Clinical jargon - cervix

A
Dilation or “dilatation” = 0 to 10 cms
10 cm = “fully dilated”
Practice in paper bag w/ plastic model
Measure your own fingers
(mine – index + middle = 3 cms)

“Effacement” = expressed as a %
Degree of thinning or shortening of cervix
Normally, not in labor, cx = 2+ cms in “length” (= 0 % effaced)
“Effaces” all the way to “paper thin”

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11
Q

Jargon - positioning

A

LIE = vertical, oblique, transverse – it’s about the whole baby
PRESENTATION = what part is “presenting” = “coming first”. Vtx = usual. Also: breech, hand, brow, face
POSITION = orientation of presenting part – if Vtx, is baby “facing” up, down, sideways, e.g.
ROA, LOA, OA, ROP, LOP, ROT, LOT

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12
Q

Baby head landmarks

A

anterior fontanelle:

  • metopic suture (north)
  • coronal suture (east)
  • sagittal suture (south)
  • coronal suture (west)

posterior fontanelle:
- sagittal suture- north
lambdoid sutures- east/west

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13
Q

birth planning statistics

A

< 50% are “intended”
Fewer still are truly “planned”
50+% of births in Colo are under Medicaid

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14
Q

questions to ask at first encounter

A

Is patient sexually active? “Are you involved with a sexual partner?”
Using a birth control method (“BCM”)?
If no BCM – “Do you want to become pregnant?”
If no – assist with decision on BCM
If “yes” or “I’m fine with it if it happens” –

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15
Q

Pre-Conception Appointment

A

OK to do with another service, BUT a separate appt is MUCH BETTER
This is a consult only – no exam. Billable!
Invite the (proposed) father!!!!
Providing this service is YOUR RESPONSIBILITY if you are a PCP or an Ob/Gyn.
March of Dimes will be HAPPY.
Trial lawyers will be UNHAPPY.

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16
Q

Standardized Format

A

Same discussion takes place with all encounters. Extras are added on individual basis. Use a questionnaire and a pre-developed document. (ACOG)
This becomes part of the Medical Record. “You see here, Mr. Lawyer, I did, in fact, tell your client to stop smoking – and why.”

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17
Q

Review the past (and male stuff)

A

Current state of health – BOTH partners
Past health issues – BOTH
Male – mumps early teens, trauma, meds, substances, his family history
Sorry, dude, smoking weed DOES interfere with your swimmers!

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18
Q

Review the past- female

A

Trouble getting Pg in past?
Prior OB history?
Include miscarriages and terminations. If she is a G4P0040 (4 miscarriages) - red light.
OB complications? (pre, delivery, PP)
Health – thyroid, obesity, diabetes, hypertension, lupus, renal disease, heart, pulmonary – this is basically a “ROS” with these highlights.
Is she seeing another physician for chronic condition? If yes – consult him/her ALSO.
Diet
Exercise (avoid high-impact)
Substances (tobacco, rec drugs, ALCOHOL)
Meds: Rx, supplem, OTC
Plans to travel? (a very BAD IDEA)

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19
Q

ethnicity and birth issues

A
Ashkenazi Jews (Tay-Sachs)
African-American (sickle cell anemia)
Northern European (cystic fibrosis)
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20
Q

preconception Lab work

A
TSH
Rubella immunity
CF carrier status
Hgb electrophoresis (HgbS in A.A. popul)
Consider doing HIV Ab
Other, specific to patient – e.g. if diabetic you need a HgbA1C, FBS, renal functions
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21
Q

Substances, Meds- preconception

A

Discontinue EVERYTHING, PREFERABLY PRIOR TO CONCEPTION.
Exception is a needed Rx provided by you or another physician. Counsel as to risk. Is there an alternative? Example is anti-seizure meds.

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22
Q

FOLIC ACID (FA)

A

Supplement of 400 mcg daily
Reduces risk of certain anomalies by as much as 50%. (spina bifida)
Begin BEFORE CONCEPTION - these anomalies occur within DAYS of conception.
FA = water soluble – can’t have “too much”.
OTC PNV’s (OTC prenatal vitamins).

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23
Q

Keep a calendar

A

Record “Day ONE” of each menses.
Dating is EDC = 40 “completed” weeks from day one of LNMP.
Self-pregnancy test – record date/result.

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24
Q

Stopping BCPills (BCP)

A

Ideally, stop BCP @ end of package and have that period (called a “pill period”) AND TWO MORE “natural” periods and THEN conceive.
May help restore endometrium – and may reduce miscarriage risk.
A recorded and “reliable” LNMP makes it far easier to calculate a preliminary EDC.

25
Q

Removal of IUD

A

Remove on last day of a normal period.

Have one more period and then conceive.

26
Q

Numbering the days of the cycle

A

Days are numbered. “Day 1” = first day of a normal menses.

When next period begins, the “count” starts over – first day of that period = “day 1”.

27
Q

Conception – FUN facts

A

The ovum is “fertilizable” for only about 22-23 HOURS after ovulation.
Ideally, ovulation takes place into a “rich sperm environment” (ampulla of tube) → 0 hours from ovulation to fertilization.
Sperm likely “live” in oviduct for ~72 hours.
Sperm are “in” the oviduct within minutes.

28
Q

Conception - timing

A

Daily ejaculation, for most men, will gradually reduce overall sperm count.
Ovulation, in the “ideal” cycle = day 14, but few women have “perfectly-timed” cycles.
Therefore (!)………. Recommend: Coitus every OTHER day from about days 10-20.
This (1) enhances chances of conception AND (2) reduces risk of an “OLD EGG” being fertilized. (OLD → greater miscarriage risk.)

29
Q

Conception - misc.

A

Lube kills sperm.

“Male retention” – after ejaculation, he “stays inside” for short interval.

30
Q

Want a Girl – or Boy ?

A

Shettles’ criteria
Alter vaginal environment to “favor” one type of sperm over the other – “tilt” odds by 5-10%

Agar gel “swim-up”
Special cases – for example…
FHx hemophilia – try to avoid male baby

31
Q

Pregnancy testing?

A

OK to do OTC – but no insurance coverage.
OTC – wait until about 5-7 days “late”.
Better = have patient come to office/clinic for testing ~~ 7 days “late”.
This gives opportunity for office staff (even physician if available) to assess early risk factors and be sure patient is on FA.

32
Q

“New OB” = NOB appointment

A

If had preconception appointment, at 6-7 weeks.
If unplanned or no pre-appointment, at 5-6 weeks or ASAP after + Pg test.
If risk factors – ASAP after + test.
NOB appt should take ~~ one HOUR: Comprehensive H&P, labs, counseling, answering questions, start “prenatal record”, risk assessment. (OK, if low-risk, for “extender” [= NP, PA] to do this, with physician appointment ~~ 1 week later.)

33
Q

DIABETES & ALCOHOL

A

Both MUST be dealt with Pre-conception.
“Safe” dose of EtOH = NONE. This is your BEST CHANCE to prevent FAS = Fetal Alcohol Syndrome!
HgbA1C should be ~~ 5-6% before conception
> 7-8 % = doubles risk of anomalies
11-12% = very high risk

34
Q

COMPLICATED HX??

A

Consult with Bd Cert Medical Geneticist

35
Q

ULTRA HIGH RISK OB HX??

A

REFER TO “NEXT UP” LEVEL OF CARE:
YOU = PCP………………REFER TO OB/GYN
YOU = OB/GYN………..REFER TO MFM

(MFM – Maternal Fetal Medicine, aka a “Perinatologist”)

36
Q

stuff to do at normal case First or “New OB” = NOB = 8 weeks

A

8 weeks US – ensure single, viable (gives also the most-reliable EDC)
The most “complete” history you’ve ever done
Physical exam
Lab work – ABO, Rh, Ab sceen, rubella titer, RPR, CBC, Urine C&S, GC & chlamydia, Pap, TSH, HIV, HBsAg
Start PN record
Risk assessment
Q&A

37
Q

12 weeks appt

A

BP, weight, UA (S,P,N)
** Use Doppler to find FHT’s
Fundus is @ SP
Genetics background finalized

38
Q

16 weeks appt

A
BP, weight, UA
Fundus ½ way between SP and umbilicus
FHT’s with DT
Hematocrit (Hct) or hemoglobin
Order US for ~~ 19 weeks
39
Q

20 weeks appt

A
BP, weight, UA
** Review US from 19 wks
Counsel pt to choose physician for baby
FHT’s with DT and FS
Begin FH measurements
Fundus @ umbilicus, FH = ~~20 cms
Cms = weeks (+ or – 2cm) until ~~ 34 weeks
40
Q

“DATING” IS IMPORTANT!

A

You need a “good” EDC to work from
Calculate the “final EDC” from the ~ 8 week US in most cases - use the “CRL”
LMP, LNMP, 19 week (or later) US = OK, but not as good
“The later the worse” for US to tell EDC
“Clinical sizing” can be WAY OFF
NEVER change the EDC w/o compelling reason

41
Q

24 weeks appt

A
BP, weight, UA
Measure FH
FHT’s w/ DT
Register for prenatal classes
**Vaccines?  (influenza + pertussis)
42
Q

28 weeks appt

A
BP, weight, UA
FHT’s w/ DT
FH = ~28 cm
Consider SVE - ? Prem. Dilation
**Test for GDM (1 hr BS)
Hct
Begin L&amp;D counseling
43
Q

30 week appt

A
Optional in normal case
BP, weight, UA
FHT’s w/ DT
FH ~ 30 cms
L&amp;D counseling
44
Q

32 week appt

A
BP, weight, UA
FHT’s w/ DT
FH = ~~ 32 cms
Begin Leopold’s maneuvers
L&amp;D counseling
45
Q

34 week appt

A
BP, weight, UA
FHT’s w/ DT
FH begins to “lag”
Leopold’s to check lie/presentation
L&amp;D counseling, Q&amp;A
46
Q

36 week appt

A
BP, weight, UA
FHT’s with DT
FH lags
** Leopold’s
Hct
** GBS culture
SVE to check cervix status
L&amp;D discussion
47
Q

37 week appt

A
BP, weight, UA
FHT’s w/ DT
FH – lags
Leopold’s
SVE
L&amp;D discussion
Discuss future BCM (birth control method)
48
Q

38 weeks appt

A
BP, weight, UA
FHT’s w/ DT
FH – lags
Leopold’s
SVE
L&amp;D discussion
WTC (when to call)
49
Q

39 weeks appt

A
BP, weight, UA
FHT’s w/ DT
FH – lags
Leopold’s
SVE
Q&amp;A
50
Q

40 weeks appt

A
BP, weight, UA
FHT’s w/ DT
FH – lags
Leopold’s
SVE
“Post-dates” planning
Q&amp;A
51
Q

Normal weight gain?

A

10 lbs before 20 weeks and one pound per week from 20 – 40 weeks
Total = 30 lbs

Advice varies, depending on where patient started
Weight loss is NEVER advised

52
Q

Ultrasound abbreviations

A

= Sonogram

Abbreviate as “US”

May be “TVUS” = transvaginal US

OR, “transabdominal US”

53
Q

Routine” US

A

~~ TVUS @ 8 weeks for viability, dates, fetal number

“Transabdominal” @ 19 weeks for “anatomy scan” – may tell fetal gender

Any others, in normal case, are for “marketing” purposes/souvenirs

54
Q

US – threatened AB

A

Sac + embryo + FHT’s = likely viable
Misshapen sac, no embryo, no FHT’s = likely non-viable
May be used serially in conjunction with QHCG levels
TVUS – standard of care

55
Q

US – for cervical length

A
For the “at-risk” patient
TVUS @ 12 – 22 weeks
Look for shortening or “funneling”
MAY (MAY) show risk for preterm birth
Cerclage - debatable
56
Q

US for growth

A

Transabdominal method
IUGR (intrauterine growth RESTRICTION)
Used serially
Watch abdominal circumference, AFV = amniotic fluid volume

Macrosomia (large!)? Near EDC. OK to do it, but notoriously unreliable for EFW.

57
Q

US for twins

A
TVUS if < 12 weeks, then transabdominal
Diagnosis
Growth concordancy  (are we learning to share?)
58
Q

US for bleeding – 3rd trimester

A
(transabdominal, TVUS in 2nd trimester)
Abruption of the placenta = “Abruptio”
May show if very large separation
Not reliable
Placenta previa
- May “migrate”
- Can follow serially
- Assess that it’s “only” a previa