A nurse is preparing to administer penicillin G benzathine 1.2 million units IM now. The amount available is penicillin G benzathine 600,000 units/mL. How many mL should the nurse administer?
(Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Choice A Reason: This is correct because Chadwick's sign is a bluish or purplish discoloration of the cervix, vagina, and vulva caused by increased blood flow to the pelvic area during pregnancy. It is one of the earliest signs of pregnancy and can be observed as early as six to eight weeks of gestation.

Choice B Reason: This is incorrect because Goodell's sign is a softening of the cervix due to increased vascularity and edema during pregnancy. It is another early sign of pregnancy and can be detected by palpation around six to eight weeks of gestation.

Choice C Reason: This is incorrect because Hegar's sign is a softening of the lower uterine segment or isthmus during pregnancy. It is also an early sign of pregnancy and can be felt by bimanual examination around six to twelve weeks of gestation.

Choice D Reason: This is incorrect because Homan's sign is a pain in the calf or popliteal region when the foot is dorsiflexed. It is a sign of deep vein thrombosis, which is a potential complication of pregnancy, but not a normal finding.

Choice A Reason: Nausea is a common presumptive sign of pregnancy, especially in the first trimester. It is caused by hormonal changes and may be accompanied by vomiting.

Choice B Reason: Abdominal enlargement is another presumptive sign of pregnancy, as the uterus grows to accommodate the developing fetus. It may be noticeable as early as 12 weeks of gestation.

Choice C Reason: A positive pregnancy test is a presumptive sign of pregnancy, as it detects the presence of human chorionic gonadotropin (hCG), a hormone produced by the placenta. However, it is not a definitive sign, as it may be affected by other factors such as medications, tumors, or false positives.

Choice D Reason: Braxton Hicks contractions are not a presumptive sign of pregnancy, but a probable sign. They are irregular and painless contractions of the uterus that occur throughout pregnancy, but become more frequent and noticeable in the third trimester. They are also known as false labor contractions.

Choice E Reason: Amenorrhea, or the absence of menstrual periods, is a presumptive sign of pregnancy, as it indicates that ovulation has ceased. However, it is not a definitive sign, as it may be caused by other factors such as stress, illness, or hormonal imbalances.