NSG 3111 Study Guide - Final Guide: Anaphylaxis, Cyanosis, Circulatory System
24 Apr 2018
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Antepartum testing in the 1st and 2nd trimester. Integrated prenatal screening: 2 step process, includes 1st and 2nd trimester serum screening with or without nt, based on the use of papp-a and nt in the 1st trimester. Coombs test: screening tool for rh incompatibility. Amniocentesis: obtains amniotic fluid; which contains fetal cells to test for chromosomal; aneuploidy, possible after week 14, fetal cells can be karotyped; determines fetal gender, sex linked disorders ect. Indications include: prenatal diagnosis of genetic disorders, assessment of pulmonary maturity. Chorionic villus sampling: can be used to test for biochemical abnormalities, single-gene conditions, and collagen abnormalities, preformed between 10-13 weeks. Involves the removal of a small tissue specimen from the fetal portion of the placenta. Percutaneous umbilical blood sampling: can be used for fetal blood sampling and transfusion. Indication for use includes prenatal diagnosis of inherited blood disorders, karyotyping of malformed fetuses, detection of fetal infection, assessment and rx of isoummunization and thrombocytopenia.
