Explanation
(A) Mites are not the common vector of Lyme disease. (B) Fleas are not the common vector of Lyme disease.
(C) Ticks are the common vector of Lyme disease. (D) Mosquitoes are not the common vector of Lyme disease.

Explanation/Reference:
Explanation:
(A) Chlamydia trachomatis infection is the most common STD in the United States. The Centers for Disease Control and Prevention recommend screening of all high-risk women, such as adolescents and women with multiple sex partners. (B) Herpes simplex genitalia is estimated to be found in 5-20 million people in the United States and is rising in occurrence yearly. (C) Syphilis is a chronic infection caused by Treponema pallidum. Over the last several years the number of people infected has begun to increase. (D) Gonorrhea is a bacterial infection caused by the organism Neisseria gonorrhoeae. Although gonorrhea is common, chlamydia is still the most common STD.

Explanation
(A, B, D) These values are incorrect. Normal intake for a child of 2 years is about 1600 mL in 24 hours. (C) This value is correct. Normal intake for a child of 2 years is about 1600 mL in 24 hours.

Section: Questions Set D
Explanation:
(A) A rigid, board like abdomen is an assessment finding indicative of placenta abruptio. (B) A cause of postbirth hemorrhage is uterine atony. With placenta previa, uterine tone is within normal range. (C) The placenta is located directly over the cervical os in complete previa. Blood will escape through the os, resulting in the uterus and abdomen remaining soft and relaxed. (D) In placenta abruptio, hypertonicity of the uterus is caused by the entrapment of blood between the placenta and uterine wall, a retroplacental bleed. This does not exist in placenta previa.

Explanation
(A) Menstruation should not occur during pregnancy. (B) Abruptio placentae is marked by painful vaginal bleeding following a premature placental detachment after 20th week of gestation. (C) A low-lying placenta separates from the uterine wall as the uterus contracts and cervix dilates. This separation causes painless bleeding in the 7th-8th month. (D) Polyhydramnios is excessive amniotic fluid.