A client comes to the prenatal clinic for her first visit. When determining the client's estimated due date, the nurse understands that which method is the most accurate?

Choice A Reason: This is incorrect because gastrointestinal bleeding is not an adverse effect of hydralazine, which is a vasodilator that lowers blood pressure by relaxing the smooth muscles of the blood vessels. Gastrointestinal bleeding can be caused by other conditions such as ulcers, gastritis, or hemorrhoids.

Choice B Reason: This is incorrect because sweating is not an adverse effect of hydralazine, but a normal response to vasodilation and heat loss. Sweating can also be caused by other factors such as fever, anxiety, or exercise.

Choice C Reason: This is correct because tachycardia is an adverse effect of hydralazine, which can occur as a reflex response to vasodilation and hypotension. Tachycardia can increase the cardiac workload and oxygen demand, which can be harmful for pregnant women with preeclampsia who already have impaired placental perfusion and fetal hypoxia.

Choice D Reason: This is incorrect because blurred vision is not an adverse effect of hydralazine, but a symptom of severe preeclampsia that indicates cerebral edema or ischemia. Blurred vision can also be caused by other conditions such as diabetes, glaucoma, or cataracts.

Choice A reason: Hemorrhage is the most life-threatening complication of a ruptured ectopic pregnancy, as it can lead to hypovolemic shock and death. The nurse should monitor the client's vital signs, blood loss, and level of consciousness, and administer fluids and blood products as ordered.

Choice B reason: Edema is not a common sign of a ruptured ectopic pregnancy, and it is not a priority over hemorrhage. Edema may be caused by other conditions, such as heart failure, kidney disease, or venous insufficiency.

Choice C reason: Infection is a possible complication of a ruptured ectopic pregnancy, but it is not as urgent as hemorrhage. Infection may manifest as fever, chills, malaise, or foul-smelling vaginal discharge. The nurse should administer antibiotics as ordered and monitor the client's temperature and white blood cell count.

Choice D reason: Jaundice is not a typical symptom of a ruptured ectopic pregnancy, and it is not a priority over hemorrhage. Jaundice may indicate liver dysfunction or hemolytic anemia, which are unrelated to ectopic pregnancy. The nurse should assess the client's skin and sclera color, and check the liver enzymes and bilirubin levels.