OB/GYN refers to obstetrics and gynecology. An obstetrics nurse helps women through their pregnancy, labor and delivery and may work as a labor and delivery nurse. A gynecological nurse focuses on treating women with disorders of the reproductive system, including hysterectomies, cancer and sexually transmitted diseases. OB/GYN nurses may work in either a hospital or clinic setting. The National Certification Corporation offers the Inpatient Obstetric Nursing credential (RNC-OB), the Women?s Health Care Nurse Practitioner credential (WHNP-BC) and more. The U.S. Bureau of Labor Statistics predicts excellent, overall job growth for registered nurses. The median registered nurse salary is $62,450.