Correct Answer: D

Rationale: After receiving the varicella vaccine, applying a cool pack to the injection site can help reduce discomfort. This intervention is a simple and effective way to manage local reactions at the site of the vaccination, providing comfort to the child and potentially reducing swelling or pain.

Choices A, B, and C are incorrect because chewable children's aspirin is not typically recommended after vaccination, keeping the child home is not necessary unless advised by a healthcare provider, and monitoring fever alone is not the primary instruction post-varicella vaccination.

Correct Answer: B

Rationale: N¤gele's rule is used to estimate the date of delivery. It involves adding 7 days to the first day of the last menstrual period (August 2), which gives August 9.
Then, subtracting 3 months from August 9, we arrive at May 9 of the following year as the estimated date of delivery. This makes choice B, 'May 9, 2007,' the correct answer.

Choices A, C, and D are incorrect as they do not follow the correct calculation based on N¤gele's rule.

Correct Answer: A

Rationale:
To calculate the infusion rate in mL/hour, first, convert 2 milliunits/minute to milliunits/hour by multiplying by 60 to get 120 milliunits/hour.
Then, calculate the mL/hour using the formula: milliunits/hour (120) total volume (1000 mL) · units in IV solution (10 units) = 1200 mL/hour.
Therefore, the nurse should program the infusion pump to deliver 12 mL/hour to provide the prescribed dose of oxytocin.
Choice B is incorrect as it does not reflect the correct calculation.
Choice C is incorrect as it is not derived from the correct formula.
Choice D is incorrect as it is not the result of the accurate calculation based on the provided information.

Correct Answer: C

Rationale: During the first trimester of pregnancy, it is crucial to advise pregnant clients to avoid alcohol, caffeine, and smoking. These substances can worsen nausea and harm fetal development. By eliminating these substances, the client can help alleviate nausea and create a healthier environment for the developing fetus.

Choices A, B, and D are not as critical in managing nausea during the first trimester. While relaxation techniques may help, avoiding harmful substances like alcohol, caffeine, and smoking takes precedence. Increasing fluid intake can be beneficial but not as crucial as avoiding harmful substances. Eliminating snacks between meals may not be necessary for all clients and is not directly related to managing nausea in the first trimester.

Correct Answer: C

Rationale: A blood pressure of 149/90 is an indication to withhold Methergine due to its potential to further increase blood pressure. Methergine is a medication that can cause vasoconstriction, leading to elevated blood pressure. In this case, administering Methergine could exacerbate the elevated blood pressure, posing a risk to the patient.
Therefore, it is crucial to withhold the medication in the presence of hypertension to prevent adverse effects. The other options are not directly related to the administration of Methergine. A respiratory rate of 22 breaths/min is within the normal range. A large amount of lochia rubra may indicate normal postpartum bleeding. A positive Homan's sign is associated with deep vein thrombosis, which is not a contraindication for administering Methergine.