A 25-year-old single woman comes to the gynecologist's office for a follow-up visit related to her abnormal Papanicolaou (Pap) smear. The test revealed that the patient has human papillomavirus (HPV). The patient asks, "What is that? Can you get rid of it?" Your best response is:

Choice A reason: Herpes simplex virus is incorrect because it is not the infection described in the question. It is transmitted through direct contact with the skin or mucous membranes of someone who is infected, usually through oral or genital sex. Symptoms include painful blisters and sores in the mouth or genitals. It does not cause life-threatening infections, but it can increase the risk of other sexually transmitted infections.

Choice B reason: Human papillomavirus is incorrect because it is not the infection described in the question. It is transmitted through direct contact with the skin or mucous membranes of someone who is infected, usually through genital sex. Symptoms include genital warts and cervical cancer. It does not cause life-threatening infections, but it can increase the risk of other cancers.

Choice C reason: Human immunodeficiency virus is correct because it is the infection described in the question. It is transmitted through direct contact with the blood or body fluid of someone who is infected, usually through unprotected sex, sharing needles, or passed from a mother to a baby at birth. Symptoms may take 10 years or more to show. Once they appear, the person is susceptible to life-threatening infections, such as pneumonia, tuberculosis, or cancer. This condition is also known as acquired immunodeficiency syndrome (AIDS).

Choice D reason: Cytomegalovirus is incorrect because it is not the infection described in the question. It is transmitted through direct contact with the saliva, urine, or breast milk of someone who is infected, usually through kissing, sexual contact, or breastfeeding. Symptoms are usually mild or absent in healthy people, but they can be serious in people with weakened immune systems or unborn babies. It does not cause life-threatening infections, but it can cause birth defects, hearing loss, or vision problems.

Choice A reason: Poor maternal weight gain is a risk factor for IUGR, as it indicates inadequate nutrition and fetal growth.

Choice B reason: Premature rupture of membranes is not a risk factor for IUGR, as it does not affect the placental function or blood flow. It is a complication of pregnancy that can lead to infection, preterm labor, or cord prolapse.

Choice C reason: Smoking is a risk factor for IUGR, as it reduces the oxygen and nutrient delivery to the fetus and causes vasoconstriction of the placental vessels.

Choice D reason: Gestational hypertension is a risk factor for IUGR, as it impairs the placental perfusion and causes fetal hypoxia and acidosis.