Correct Answer: C

Rationale: Shortness of breath is a symptom that can indicate a serious side effect of oral contraceptives, such as a potential blood clot in the lungs. This condition requires immediate medical attention to prevent complications. Choices A, B, and D are not typically associated with serious side effects of oral contraceptives and are considered normal or common side effects that do not require urgent medical attention.

Correct Answer: D

Rationale: Calcium gluconate is the antidote for magnesium sulfate toxicity. In cases of magnesium sulfate toxicity, calcium gluconate is administered to counteract the effects of magnesium and restore calcium levels. Magnesium toxicity can lead to symptoms such as muscle weakness, respiratory depression, and cardiac arrhythmias. Calcium gluconate helps in reversing these effects by competing with magnesium and preventing its adverse manifestations. Nifedipine is a calcium channel blocker used for conditions like hypertension and angina, not for magnesium toxicity. Pyridoxine is vitamin B6 and is not the antidote for magnesium toxicity. Ferrous sulfate is an iron supplement and is not used to treat magnesium sulfate toxicity.

Correct Answer: B

Rationale: Corrected Question: When caring for a client receiving nifedipine for prevention of preterm labor, the nurse should monitor the client for which of the following manifestations? Rationale: Nifedipine, a calcium channel blocker, causes vasodilation, potentially leading to a decrease in blood pressure and side effects such as dizziness. Monitoring for dizziness is essential to ensure the client's safety and well-being during treatment. Choices A, C, and D are incorrect as they are not typically associated with nifedipine use for preventing preterm labor. Blood-tinged sputum may indicate other conditions like pulmonary issues, pallor could suggest anemia or circulatory problems, and somnolence is not a common side effect of nifedipine.

Correct Answer: A

Rationale: To calculate the estimated date of delivery, add 7 days to the first day of the last menstrual period (April 1st), which gives April 8th. Then, count forward 9 months from April 8th, leading to January 8th as the estimated date of delivery. Choice A is correct. Choice B is incorrect because it is exactly 9 months from the last menstrual period without accounting for the additional 7 days. Choices C and D are incorrect as they fall in February, which is beyond the 9-month period from the last menstrual period.

Correct Answer: B

Rationale: Ectopic pregnancy should be suspected in clients with abrupt, sharp, right-sided lower quadrant abdominal pain and bright red vaginal bleeding, especially if they have an intrauterine device (IUD). In this case, the client's symptoms are classic for ectopic pregnancy, where the fertilized egg implants outside the uterus, commonly in the fallopian tube. Missed abortion (choice A) refers to a nonviable embryo or fetus in the uterus, which is not consistent with the client's presentation. Severe preeclampsia (choice C) is characterized by hypertension and proteinuria, not the symptoms described. Hydatidiform mole (choice D) presents with vaginal bleeding but typically lacks abdominal pain and is not related to the presence of an IUD.