Correct Answer: B

Rationale: In cases where the fetus is in a posterior position causing severe pressure and pain in the lower back during labor, applying counter-pressure is the most effective nonpharmacological intervention. Counter-pressure helps lift the fetal head off the spinal nerve, offering relief to the client. This technique is evidence-based and recommended to alleviate discomfort associated with a posterior fetal position. Choices A, C, and D are not as effective in this situation. While a back rub or playing music may provide some comfort, they do not directly address the issue caused by the fetal head's position. Similarly, a foot massage may offer relaxation but may not significantly relieve the specific discomfort arising from the posterior fetal position and the associated lower back pain.

Correct Answer: C

Rationale: Unilateral breast pain can be a sign of mastitis, an infection of the breast tissue, which requires prompt evaluation and treatment. The nurse should instruct the client to report this clinical manifestation to the provider to prevent complications and promote recovery.

Correct Answer: D

Rationale: Cholecystitis is a correct answer. A history of gallbladder disease, such as cholecystitis, is a contraindication for the use of oral contraceptives. Hypertension is a correct answer. Hypertension is also a contraindication for the use of oral contraceptives due to the increased risk of complications. Migraine headaches are a correct answer. A history of migraine headaches is a contraindication for the use of oral contraceptives, especially for those with aura. Selecting 'All of the above' is correct as all the mentioned conditions (cholecystitis, hypertension, and migraine headaches) are contraindications for oral contraceptives. Human papillomavirus and anxiety disorder are incorrect choices as they are not contraindications for the use of oral contraceptives.

Correct Answer: A

Rationale: Late decelerations are indicative of uteroplacental insufficiency, which can be exacerbated by oxytocin administration, potentially compromising fetal well-being. Therefore, detecting late decelerations should prompt immediate reporting to the provider to prevent harm to the fetus. Choices B, C, and D are not contraindications for initiating oxytocin infusion. Moderate variability of the FHR is a reassuring sign of fetal well-being, cessation of uterine dilation may indicate a pause in labor progress but does not contraindicate oxytocin, and prolonged active phase of labor may necessitate oxytocin administration to augment contractions and progress labor.

Correct Answer: C

Rationale: A weight gain of 2.2 kg (4.8 lb) in a week is above the expected reference range for a client at 38 weeks of gestation and could indicate complications such as preeclampsia or gestational hypertension. Rapid weight gain at this stage requires immediate attention and should be reported to the provider for further evaluation and management. Choices A, B, and D are not the priority findings to report to the provider at this stage of gestation. Blood pressure of 136/88 mm Hg is within normal limits in pregnancy, insomnia is common in the third trimester, and Braxton-Hicks contractions are expected in the third trimester as the body prepares for labor.