Ovarian fetal imaging

Question 1

How do we date on ultra sound?

Answer 1

date back from last menstrual period (2 weeks before fertilisiation)

Question 2

Transvaginal scan (insert probe into vagina) 
or scan 

Can also scan thru bladder - can see water filled (black)

Answer 2

• transvaginal - gives the best approach, can see a fluid filled strucutre = gestation sac
• begining of yolk sac

see black - blader, then below it see gestaiton sac - black filled with fluid - if empty - no baby going to grow , will be feeleing pregnant as trophoblasts are still making hormones

Question 3

Appearance on ultrasoudn - white circle around a black dot

Answer 3

synctiotrophoblasts that invade the uterus

Question 4

what week does it look like a human?

Answer 4

9 weeks (7 weeks post fertilisation)

Question 5

CRL

Answer 5

crown rump length - 4mm at 6 weeks - live embreyo

7 weeks - doubles and goes to 8mm –> if havnt doubled by this time then it pregnacy is terminated -

Question 6

threatened abortion

bleeding

Answer 6

• defined as bleeding and cramping in the first 20 weeks of pregnancy
• can be seen as dark patch next to gestation sac

Question 7

anembreynoic pregnancy

fetal demise

Answer 7

• empty sac

- missed abortion use colour to see heartbeat