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1st Trimester SONOGRAPHY, image, image, image, image - Coggle Diagram

- - - - Routine “Detail Scan”
      - Bleeding
      - Pain
      - Leaking fluid
    - - Large for dates
      - Small for dates
      - Presentation
    - - Dating
      - Bleeding
      - Pain
      - Genetic Screening
  - - - Except in the following:
        
        to examine blood flow dynamics in the umbilical arteries
        
        to examine fetal blood vessels in high-risk situations
        
        for certain clinical indications Such as to refine risks for trisomies
        
        during fetal echocardiography
        
        to examine maternal uterine vessels
  - - - Embryo, Major organogenesis
    - - Fertilization, Implantation
    - - Follicle develop, Ovulation
    - - Fetus, Differentiation & growth
- - - - Outer ring (Chorion)(trophoblast)
        
        Chorion Frondosum (villi) (fetal portion of placenta)
        
        Chorion Laeve, smooth, bare
      - Inner cell mass (Amnion, Embryonic disc, YS)
  - - - Forms capsule around smooth part of trophoblast
    - - Remainder of the endometrium
      - The uninvolved portion
    - - point of attachment of blastocyst
      - contributes maternal portion of placenta
- - - - Miscarriage
        
        Rise, plateau then fall
      - Ectopic
        
        Rises slower than normal
      - Twins
        
        Rises more thank normal
- - - - Fundal Endometrium (Relatively central)
      - If eccentric, myometrial mantle S/B >5 mm
    - - Outer ring- Decidua Parietalis
      - Inner ring –Decidua Capsularisand Chorion/Trophoblast
      - differentiate Intrauterine Gestation from cyst
    - - Absent Double-ring sign
      - Perhaps less round/irregular contour
      - Consider extrauterine gestation
- - - - HC, BPD, Ventricles, Stomach, Lung, 4limbs each 3 segments, Cord insertion
      - (NT)
        
        nuchal edema
        
        ↑ NT = ↑ risk aneuploidy
        
        CRL 45-84mm (11-14wks)
        
        3mm ABN
        
        Don’t include the amnion
  - - - Parity: # of births >/= 20w
      - Abortions:# of spontaneous, induced or ectopic pregnancies <20w
      - Gravida (# times preg, inc.present one)
    - - Term Deliveries:# of deliveries >=37w
      - Premature Deliveries:# of deliveries between 20 -36w6d
      - Abortions: spontaneous or induced <20w
      - Gravida:# times preg, inc.present one
      - Living Children
  - - - Previous Scan in this pregnancy?
      - LMP
        
        Sure / Unsure
        
        Regular/ Irregular
        
        Long/ Short cycles
        
        if unknown: When was your 1st+ pregnancy test?
- - - - Normal
        
        Round
        
        Well defined
        
        <5.6 mm (inner –inner)
      - Abnormal
        
        too echogenic
        
        too large/small
        
        Irregular shape