A 35-year-old G4P3 at 18 weeks presents with sequential screening( Dual and then triple marker screening) of 1:170 for Down syndrome. You should do which of the following?
At age 35 should the patient should be offered genetic counseling and Amniocentesis. CVS is not appropriate at 18 weeks' gestation If required; the invasive test of choice here is Amniocentesis.
Offer CVS
Advise her the risk is quite small for aneuploidy
Perform a targeted ultrasound
Offer genetic counseling and perform Amniocentesis
Obstetrics