Correct Answer: B

Rationale: The correct question the nurse should ask to identify risk factors associated with the use of an oral contraceptive is whether the client smokes cigarettes. Oral contraceptives are associated with an increased risk of thromboembolic phenomena, particularly when combined with other risk factors like smoking and a history of thrombosis. Other risk factors include hypertension, cerebrovascular disease, coronary artery disease, and postoperative thrombosis risk. Choices A, C, and D are not directly related to the increased risks associated with oral contraceptive use. Menstrual cramps, dieting, and strenuous exercise are not significant risk factors for thromboembolic events.

Correct Answer: A

Rationale: The correct answer is that the female condom offers protection against sexually transmitted infections (STIs). Unlike the male condom, the female condom is a loose-fitting tubular polyurethane pouch that is anchored over the labia and cervix. It is used once and then discarded, making choice C incorrect. Female and male condoms should not be used together, so choice B is incorrect. Additionally, no contraceptive method is 100% effective in preventing pregnancy, making choice D incorrect.

Correct Answer: C

Rationale: To confirm pregnancy, the presence of palpable fetal movement is a positive indicator. Palpable fetal movement is a certain sign of pregnancy, known as a fetal movement felt by the examiner. Amenorrhea is a presumptive sign of pregnancy as it is reported by the woman but is not confirmatory. Thinning of the cervix (Hegar sign) is a probable sign of pregnancy, which is not confirmatory. A positive result on a home urine test for pregnancy is also a probable indicator. However, a positive pregnancy test result can sometimes yield false-positive results due to various factors like medication, recent pregnancy, or errors in reading.

Correct Answer: A

Rationale: The head circumference growth rate during the first year is approximately 0.4 inches (1 cm) per month. By 10 to 12 months of age, the infant's head and chest circumferences are equal. In this case, where the head circumference matches the chest circumference, it is a normal finding in infants around 10-12 months. Therefore, the most appropriate action is to document these measurements in the infant's health care record. Suspecting hydrocephalus or suggesting a skull x-ray would be premature and not indicated based on this measurement. Similarly, telling the mother that the infant is growing faster than expected is not accurate and could cause unnecessary concern.

Correct Answer: C

Rationale: Medication bound to protein leads to less availability to produce desired medicinal effects because only unbound drugs can interact with active receptor sites. If a drug is bound to protein, it cannot bind with a receptor site, reducing its effectiveness. Choice A is incorrect because binding to protein reduces drug availability. Choice B is incorrect because distribution to receptor sites is ineffective if the drug is bound to protein. Choice D is incorrect because metabolism does not occur until the drug is removed from the protein molecule by the liver, allowing the protein to return to circulation.