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Antenatal Care and Prenatal Screening - Coggle Diagram

- - - - Crown Rump Length
    - - Biparietal Diameter, Femur lenght, abdominal cirucmference, head circumference
  - - - Consider if uncertain LMP, irregular menses, planning for NIPT, confirm viability (current threatened miscarriage or previous miscarriage), r/o ectopic
    - - 11-13 weeks
    - - 18-20 weeks
    - - Specific Clinical Concern
- - - - Pre-existing medical condition, obseity, low body weight, Grand multipara, Subtance abusem, smoking, domestic abuse, infectious disease (gonorrhea, chloamydia, HIV, Syphilis, Hep B, TB), inherited disroders, anatomical, genetic disease, previous stillbirth, advanced age, IVY, multiple gestation, Rh immunization
- - - - Symptoms vary from none to paralysis, intellecutual disabilities
    - - Second trimester anatomical ultrasound at 18-20 weeks gestation
      - Invasive Screenign
        
        Indications
        
        Positive screening test, FHx, age >40, specific utlrasound finding
        
        CVS
        
        Sample taken from placental Villi
        
        Amniocentesis
        
        15-17 weeks
        
        Sample taken from amniotic fluid
- - - - Importnt to product/maintain cells gorwth and division, prevents neural tube defects,a dn risk of otrher congenital disorders