38404440
Description
Flashcards by Angelo Gapasin, updated more than 1 year ago
|
Created by Angelo Gapasin
about 3 years ago
|
|
| Question | Answer |
| Frequencies used | 3/3.5 MHZ- normal 5 Mhz- very thin pt 2.5 - very large pt |
| arrays used | Sector curvilinear linear |
| The probe is coated with and covered with | gel and condom |
| Obstetric Scanning | Fertilization - day 15 morula >16 cells- 18-19 days blastocyst implants endometrium- day 20-21 implants myometrium- day 28 |
| GS meaning | gestational sac |
| Gestational sac appearance |
Anechoic, chrionic cavity w/ bright echogenic walls
Image:
Gsac (binary/octet-stream)
|
| describes a GS | intradecidual sign |
| fingerlike projections of trophoblast | chorionic villi |
| 2 bright concentric lines separated by anechoic fluid | double sac sign |
| pregnancies occur outside the uterus | ectopic pregnancy |
| Signs of 1st half of 1st trimester | a. double sac sign b. yolk sign c. double bleb sign |
| confirms intrauterine pregnancy | double sac sign |
| small round anechoic filled center increaes 5th-10th week | yolk sign |
| 1-2 mm embryonic disk, b/n yolk and amniotic | double bleb sign |
| Signs in 2nd half of 1st tri | a. Amniotic sac b. Embryonic heart c. Skeletal system d. Umbilical Cord e. Limbs f. Head and body become proportional |
| amniotic sac | enlarges, fuses with chorionic cavity 12-16 weeks large enough to surround embryo |
| embryonic heart | detected early as 5 weeks 11-12 weeks |
| skeletal system | 6-8 weeks |
| umbilical cord | 8 weeks assumes c shape placental development begins |
| limbs | 10th week |
| head and body become proportional | 11th and 12th week |
| DETERMINING GESTATIONAL AGE | a. Main sac diameter (MSD) 1st half length+depth+width total/3 b. Crown Rump Length- 2nd half |
| Signs of failed pregnancy | a. Empty GS, blighted ovum b. Absent embryo c. Empty Amnion d. Dead Embryo e. Abnormal in progress f. blighted twin |
| MC of ectopic pregnancy | due to infection/ congenital narrowing of ovi ducts |
| MC location | ampulla of fallopian tubes 80% |
| types of ectopic pregnancy | 1. interstitial 2. ovarian 3 cervical 4. abdominal 5. heterotropic |
| 1. empty gs | msd- > 8m tvs (transvaginal) msd0 >10 tas(transabdominal) |
| 2. absent embryo | embryonic pregnancy msd > 25mm tas msd >16 mmtvs |
| 3. Empty amnion | b/n 6.5-10 weeks msd 14-36 mm |
| 4. dead embryo | absent heart rate- >/= 6 weeks AOG Embryo >4.5 mm CRLTVS (CRL= crown rump length) >/=9mm crltas |
| 5. Abortion in progress/ inevitable abortion | Distorted gs at lus open cervix |
| 6. blighted twin | demise of one to twin |
| Gestational trophoblastic Disease | 1. Complete mole 2. Partial Mole 3. Invasive mole 4. Choriocarcinoma |
| Complete mole | mc type, 80% diploid karyotype, 46xx all chromosomes paternal in origin empty ovum |
| uts finding in complete mole | Snow storm appearance bunch of grapes |
| complete mole removed by | DILATATION AND CURETTAGE |
| DILATATION AND CURETTAGE | 1. dilation involves stretching open the cervix 2. curettage involves scraping out a sample of uterine lining |
| Partial mole | triploid 69xxx,69xxy,69xyy cause by 2 sperm |
| Invasive mole | trophoblast invade the myometrium and blood vessel |
| choriocarcinoma | heterogenous, necrotic, hemorrhagic, infiltrative mass large hemorrhagic mets (lungs 75%, brain, vagina,kidneys,bowel and liver) |
Want to create your own Flashcards for free with GoConqr? Learn more.