Increasing fluid and oxygen administration may increase the overall oxygenation of the fetus and result in greater variability in heart rate. It is advisable to change the position of the patient, however, a supine position is not compatible with pregnancy. Contacting the provider is an acceptable intervention given concern for fetal well-being.

The most common cause of mucopurulent cervicitis is chlamydia trachomatis, followed by neisseria gonorrhea. Human papillomavirus, while it is associated with increased risk of development of cervical cancer, does not cause mucopurulent cervicitis, nor does herpes simplex.

Placental aromatase deficiency is a condition that prevents testosterone from being aromatized into estrogen during pregnancy. This results in a temporary masculinization of the mother that does not continue past delivery. Neither chloasma nor growth hormone deficiency result in masculinization, and masculinizing symptoms of polycystic ovarian syndrome often improve during pregnancy, rather than getting worse. 

Lichen sclerosus is a condition that presents as vulvar pruritus and pain with porcelain-white vaginovulvular atrophy. It is most common in post-menopausal women, though it does occur on occasion in younger women and girls. While all of the other conditions listed can cause puritis and pain, none of them are associated with frank atrophy.   

The Amsel criteria for bacterial vaginosis are as follows: clue cells seen on microscopic examination, a positive "whiff" test on addition of potassium hydroxide to the vaginal discharge, a vaginal pH > 4.5, and thin gray or white vaginal discharge.

The main risk factors for uterine leiomyoma are family history, obesity, and red meat consumption. Smoking is not a risk factor.

75 to 90% of cases of pelvic inflammatory disease are caused by neisseria gonorrhoeae and/or chlamydia trachomatis infections. This condition, typified by adhesion formation in the uterus and fallopian tubes, can result in serious issues such as infertility, ectopic pregnancy, or reproductive cancer. 

The criteria for diagnosis of PID are as follows: fever, cervical motion tenderness, abdominal pain, leukocytosis, elevated ESR, and purulent cervical discharge.

The primary risk in rubella infection during pregnancy is to the fetus. The rubella virus is able to cross the placenta, and acts as a teratogen by inducing apoptosis in fetal cells. This is termed congenital rubella syndrome. Birth defects can include deafness, ocular damage, cataracts, congenital heart defects, hepatomegaly, and developmental disability or delays. 

Infants who are exposed to rubella during weeks 0-12 of gestation have a 51% chance of developing congenital rubella syndrome. If the fetus is exposed to the virus between 12 and 26 weeks, the incidence of defects drops to 23%. Congenital rubella syndrome is rare in infants whose mothers were initially exposed to the virus after 26 weeks of gestation. Interestingly, the fetus is more likely to have birth defects if the mother contracted rubella before conception - infants whose mothers contracted the virus 0-4 weeks before conception have as much as 43% incidence of congenital rubella syndrome, due to it's long incubation period.