A woman diagnosed with marginal placenta previa gave birth vaginally 15 minutes ago. At the present time she is at the greatest risk for:

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: This is incorrect because primary dysmenorrhea is menstrual pain that is not associated with any underlying condition. It usually begins with the onset of menstruation and lasts for a few days. It does not cause pain during intercourse or infertility.

Choice B reason: This is correct because endometriosis is a condition where the endometrial tissue that normally lines the uterus grows outside the uterus, such as on the ovaries, fallopian tubes, or pelvic organs. It causes chronic inflammation, scarring, and adhesions that can result in severe pain during menstruation and intercourse, as well as infertility.

Choice C reason: This is incorrect because secondary dysmenorrhea is menstrual pain that is caused by an underlying condition, such as fibroids, pelvic inflammatory disease, or adenomyosis. It usually develops later in life and lasts longer than primary dysmenorrhea. It may or may not cause pain during intercourse or infertility, depending on the condition.

Choice D reason: This is incorrect because PMS stands for premenstrual syndrome, which is a group of physical and emotional symptoms that occur before menstruation. It may include mood swings, irritability, bloating, headaches, or breast tenderness. It does not cause severe pain during menstruation or intercourse, or infertility.