OB Flashcards
Determining the estimated date of delivery
• Use the Naegele rule—take first day of last menstrual period (LMP), add 7 days and subtract 3 months from it
if the last menstrual period of a pt was between June 10 and 15…
The estimated date of delivery = March 17
Weight gained during pregnancy
• 1st trimester (12 weeks)
o 1 lb per month = Total of 3 lbs
Weight gained during pregnancy
• 2nd and 3rd trimesters
o Add 1 lb every week
• The ideal weight gained during pregnancy
o 28 lbs, plus or minus 3
o Between 25 to 31 lbs
If weight gained is within +/–3 lbs …
Assess her
If weight gained is within +/–4 lbs or more…
There is trouble.. perform a BPP on the fetus
Alternative method
A quick and dirty way to come up with the ideal weight gained during pregnancy is to..
• Take the number of weeks gestation minus 9
Fundal height cannot be palpated until
week 12 - That when the fundus is midway between the umbilicus and the pubic symphysis
• The fundus can be palpated at the umbilicus between..
20 and 22 weeks
Positive Signs of Pregnancy (4)
- Fetal skeleton on x-ray
- Presence of fetus on ultrasound
- Auscultation of fetal heart (Doppler)
- Examiner palpates fetal movement (outline)
fetal HR can be heard first between…
8 to 12 weeks gestation
Quickening (baby Qicks) may be first felt between…
16 to 20 weeks gestation
Maybe Signs of Pregnancy
- Positive urine/blood hCG tests
2. Chadwick sign, Goodell sign, Hegar sign
Chadwick sign
cervical color change to cyanosis (Cs)
• Bluish discoloration of the vulva, vagina and cervix
Goodell sign
good and soft
• Softening of the cervix
Hegar sign
uterine softening
• Softening of lower uterine segment
During pregnancy, pt is advised to go for prenatal visits as follows…
- Once a Month until week 28
- Every other week between 28 and 36
- Once a week after week 36 until delivery or week 42, whichever comes first
Hemoglobin (Hb) level will fall during pregnancy
Hemoglobin (Hb) level will fall during pregnancy
- First Trimester: Hb can fall to 11 and be perfectly normal
- Second Trimester: Hb can fall to 10.5 and be perfectly normal
- Third Trimester: Hb can fall to 10 and be perfectly normal
How do you treat morning sickness?
- Morning sickness is usually seen during the 1st trimester
* Treatment: Dry carbohydrates—not before breakfast but—before pt gets out of bed
How do you deal with urinary incontinence?
- Urinary incontinence is seen in the 1st and 3rd trimesters
* Pt needs to void every 2 hours from the day she gets pregnant until 6 weeks postpartum
A pregnant pt complains of difficulty breathing. What should you advise her to do?
• Advise pt to assume to tripod position
A pregnant pt complains of back pain. What should you advise her to do?
- Back Pain is seen during the 2nd and 3rd trimester
* Advise pelvic tilt exercises to pt
Dilation
is opening cervix from 0 to 10 cm
Effacement
thinning of the cervix. It goes from thick to 100% efface (thin like paper)
Station
the relation between fetal presenting part and the mother’s ischial spines (know
this)—the narrowest part of the pelvis
o Positive numbers mean the baby has made it through this tight squeeze—good to go
o Positive numbers = Positive news
o If a baby stays at a –3, –2, –1, it can’t get through vaginally. It needs C-section for delivery