Question 59

Amniocentesis is used to help diagnose a birth defect.

Amniocentesis is a medical procedure used primarily to diagnose genetic conditions and congenital abnormalities in the fetus, making it crucial for identifying potential birth defects.

A) To determine the age of the fetus

This option is incorrect as amniocentesis is not primarily used to determine fetal age. While the volume of amniotic fluid can provide some information about the gestational age, this is not the main purpose of the procedure.

B) To determine the location of the placenta

This option is also incorrect. Amniocentesis does not provide information on the placenta's location; rather, it focuses on sampling amniotic fluid for genetic testing and diagnosing potential issues with the fetus.

C) To help diagnose pregnancy

This choice is incorrect as amniocentesis is not used to diagnose pregnancy. Pregnancy is typically confirmed through other methods, such as urine tests or blood tests, rather than through amniocentesis.

D) To help diagnose a birth defect

This option is correct. Amniocentesis involves extracting amniotic fluid to test for chromosomal abnormalities and other genetic disorders, thereby playing a critical role in diagnosing potential birth defects before birth.

Conclusion

The purpose of amniocentesis is fundamentally to aid in the diagnosis of birth defects, which distinguishes it from other options that do not accurately reflect its use. Options A, B, and C misrepresent the function of the procedure, emphasizing that D is the only correct choice in this context.