A nurse is caring for a client who has an NG tube set to low intermittent suction. The nurse irrigates the NG tube twice with 30 mL of normal saline solution during his shift. At the end of the shift, the NG canister contains 475 mL. What amount of NG drainage should the nurse record? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

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.

Choice A Reason: Nagele's rule is a formula that estimates the due date by subtracting three months from the first day of the last menstrual period and adding seven days. However, this method assumes a regular 28-day cycle and may not be accurate for women with irregular cycles or who are unsure of their last menstrual period.

Choice B Reason: Ultrasound is the most accurate method of determining the estimated due date, especially in the first trimester. Ultrasound uses sound waves to create an image of the fetus and measure its size and development. Ultrasound can also detect any abnormalities or complications that may affect the pregnancy.

Choice C Reason: Gestation wheel is a circular calendar that estimates the due date by aligning the first day of the last menstrual period with a corresponding date on the wheel. However, this method also assumes a regular 28-day cycle and may not account for variations in ovulation or implantation.

Choice D Reason: Birth calculator is an online tool that estimates the due date based on various factors such as the last menstrual period, cycle length, ovulation date, conception date, or ultrasound date. However, this method may not be reliable as it depends on the accuracy of the input data and the algorithm used by the calculator.