RNSG 1251 - Exam 2 Study Guide.

RNSG 1251 - Exam 2 Study Guide/RNSG 1251 - Exam 2 Study Guide. 1. Know the primary purposes for doing an ultrasound during different trimesters of pregnancy and how to prepare clients for the procedure.(p.167) a. 1st trimester-Transvaginal o Confirm pregnancy o Cerify location of pregnancy o Detect multifetal gestations o Determine gestational age o Confirm # and viability o Determine location of uterus, cervix, and placenta for procedures such at Chorionic villus sampling (CVS) o Identify markers that suggest abnormality. i. Procedure-Done in the lithotomy position with a transvaginal probe. b. 2nd & 3rd trimester-Transabdominal o Confirm fetal viability o Determine gestation age o Assess fetal growth o Evaluate fetal anomalies