What is the CDC recommended medication for the treatment of chlamydia?

Choice A reason: Infection is not the greatest risk for a woman with marginal placenta previa, as it is not directly related to the condition. Marginal placenta previa is a type of placenta previa where the edge of the placenta is near the cervical os but does not cover it. It can cause painless bleeding during pregnancy or labor, but it does not increase the risk of infection.

Choice B reason: Hemorrhage is the greatest risk for a woman with marginal placenta previa, as it can occur due to the separation of the placenta from the uterine wall during labor or delivery. The bleeding can be profuse and life-threatening, and it requires prompt intervention and monitoring.

Choice C reason: Urinary retention is not the greatest risk for a woman with marginal placenta previa, as it is not directly related to the condition. Urinary retention is the inability to empty the bladder completely, and it can occur due to various factors such as anesthesia, trauma, or medication. It can cause discomfort, infection, or bladder distension, but it is not as serious as hemorrhage.

Choice D reason: Thrombophlebitis is not the greatest risk for a woman with marginal placenta previa, as it is not directly related to the condition. Thrombophlebitis is the inflammation of a vein due to a blood clot, and it can occur due to prolonged bed rest, dehydration, or injury. It can cause pain, swelling, or redness in the affected area, and it can lead to pulmonary embolism if the clot dislodges and travels to the lungs. However, it is not as common or as severe as hemorrhage.

Choice A reason: Nonreactive is not the correct result, as it indicates that the FHR does not show adequate accelerations with fetal movement. A nonreactive NST means that the FHR does not increase by at least 15 beats/min for at least 15 seconds in a 20-minute period. A nonreactive NST may suggest fetal hypoxia (low oxygen) or fetal sleep.

Choice B reason: Reactive is the correct result, as it indicates that the FHR shows adequate accelerations with fetal movement. A reactive NST means that the FHR increases by at least 15 beats/min for at least 15 seconds twice or more in a 20-minute period. A reactive NST is reassuring and suggests that the fetus is well-oxygenated and healthy.

Choice C reason: Positive is not the correct result, as it is not used to describe the NST. Positive is a term used for the contraction stress test (CST), which is a different test that measures the FHR in response to uterine contractions. A positive CST means that the FHR shows late decelerations (decreases in the FHR that begin after the peak of a contraction and return to the baseline after the contraction ends) with at least 50% of the contractions. A positive CST indicates uteroplacental insufficiency (a condition where the placenta does not deliver enough oxygen and nutrients to the fetus) and fetal distress.

Choice D reason: Negative is not the correct result, as it is also not used to describe the NST. Negative is another term used for the CST, which is a different test that measures the FHR in response to uterine contractions. A negative CST means that the FHR does not show any late decelerations during at least three contractions in a 10-minute period. A negative CST is reassuring and suggests that the fetus is well-oxygenated and can tolerate labor.