MEDRADSC 3Y03 Lecture Notes - Lecture 18: Renal Agenesis, Tricuspid Insufficiency, Fetal Distress
14 Sep 2017
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Document Summary
Provide a safe & efficacious means of identifying affected pregnancies for those women or couples who wish to exercise reproductive choice or to plan for the care of an affected child. Identifies disease or birth defect by application of tests, examinations or other procedures. Advantages: decreases number of procedures done, decreases number of related complications. Disadvantages: no diagnostic, may miss target. Serious: mental or physical disabilities, even death. Leading cause: premature death, chronic illness and long-term disability. Amniocentesis: first in 1877, chromosomal studies in 1966, common since 1970s. Chorionic villus sampling: first in 1968, greater acceptance in 1980s-90s. Rapid expansion of serum & us screening options. Finding conditions that may affect future pregnancies. Test that definitively identify a disease or defect. Prenatal dx test: chromosomal abnormality aneuploidy, gene change sickle cell. Disadvantages: risks linked with procedure: chorionic villus sampling: 10-13 weeks, trophoblasts cultured, advantages: early dx, disadv. Requires development of the mind to accommondate the subjectivity of pain.
