A patient presents with a small, painless, well-defined nodule on the lateral aspect of the neck, just above the clavicle. Fine-needle aspiration cytology reveals clusters of polygonal cells with abundant granular cytoplasm. Which of the following conditions is most likely responsible for this presentation?

Correct Answer: D

Rationale: The presentation described is characteristic of a parathyroid adenoma. Parathyroid adenomas are benign neoplasms that can present as painless, well-defined nodules usually located in the lower pole of the thyroid gland or in close proximity, such as the lateral aspect of the neck above the clavicle. Fine-needle aspiration cytology of a parathyroid adenoma typically reveals polygonal cells with abundant granular cytoplasm, often referred to as chief cells. This is key in differentiating it from other conditions mentioned in the question.

Correct Answer: C

Rationale: In a postpartum client exhibiting signs of anxiety, restlessness, and palpitations, it is essential to prioritize notifying the healthcare provider immediately. These symptoms could indicate a serious condition such as postpartum preeclampsia, postpartum hemorrhage, or postpartum cardiomyopathy, which require urgent medical attention. It is crucial to rule out any life-threatening conditions and ensure the client receives appropriate treatment promptly. While relaxation techniques and deep breathing exercises can be helpful for anxiety management in some cases, in this situation, the priority is to ensure the client's safety and well-being by seeking medical evaluation and intervention. Administering a benzodiazepine without consulting the healthcare provider first could potentially mask symptoms or interact with other medications the client may be taking, making it unsafe to proceed without professional guidance.

Correct Answer: C

Rationale: The patient is likely infected with Cryptosporidium parvum based on the symptoms of watery diarrhea, abdominal cramps, and nausea after consuming contaminated water. Cryptosporidium is a protozoan parasite that can be transmitted through contaminated water sources, such as streams. Laboratory tests revealing oocysts in the stool sample further support the diagnosis of Cryptosporidium infection, as these oocysts are characteristic of this parasite. Giardia lamblia is another common protozoan parasite that can cause similar symptoms but is usually associated with more foul-smelling, greasy diarrhea. Entamoeba histolytica causes amoebic dysentery, which presents with bloody diarrhea and abdominal pain. Cyclospora cayetanensis also causes watery diarrhea, but it is usually associated with foodborne outbreaks rather than waterborne transmission.

Correct Answer: A

Rationale: Rheumatoid arthritis is a common cause of secondary osteoporosis. Chronic inflammation in rheumatoid arthritis can lead to bone loss due to increased osteoclast activity and decreased bone formation. Patients with rheumatoid arthritis are at an increased risk for developing osteoporosis, resulting in decreased bone density and increased fracture risk. Monitoring and managing bone health is an important aspect of care for individuals with rheumatoid arthritis to help prevent osteoporosis-related complications.

Correct Answer: A

Rationale: Encouraging frequent position changes, including the hands-and-knees position, is the most appropriate nursing intervention in this scenario. This position is known to help rotate the baby from a persistent posterior position to an optimal anterior position for delivery. The hands-and-knees position can help take pressure off the mother's back, alleviate back pain, and facilitate the rotation of the baby's head to engage in the mother's pelvis, thus promoting labor progress. It is a non-invasive and effective way to promote fetal rotation without the need for immediate instrumental delivery or intravenous analgesics. Continuous fetal monitoring is important for assessing fetal well-being but would not directly address the issue of posterior fetal position and the associated prolonged labor.

Correct Answer: B

Rationale: Cardiogenic shock is a life-threatening condition where the heart is unable to pump enough blood to meet the body's demands. Monitoring the patient's cardiac index, which is a measure of cardiac output adjusted for body surface area, can help detect the risk of developing cardiogenic shock. A decrease in cardiac index would indicate a decrease in the heart's ability to effectively pump blood, putting the patient at risk for cardiogenic shock. Monitoring cardiac index is essential in assessing cardiac function and guiding interventions to prevent the progression to cardiogenic shock. The other factors listed may provide important information in assessing the patient's condition, but specifically in detecting the risk of developing cardiogenic shock, monitoring the cardiac index is crucial.

Correct Answer: C

Rationale: Feces, urine, blood, and other body fluids are considered as vehicles of transmission in the context of communicable diseases. These substances can carry and transmit disease-causing microorganisms such as bacteria, viruses, and parasites from infected individuals to others. Through close contact or exposure to these contaminated body fluids, the pathogens can enter the body of another person and cause infection. Nurses like Nurse Keena must exercise caution and use appropriate infection control measures to prevent transmission of communicable diseases through these vehicles.

Correct Answer: B

Rationale: Radiologic procedures are typically not used as the least screening assessment by nurses in a perinatal unit. The nurse's initial screening assessments usually focus on gathering information through techniques such as physical examination, interviews, and reviewing laboratory results. Radiologic procedures, such as X-rays or CT scans, are usually ordered by physicians once a more specific diagnostic need has been identified, based on the initial screening assessments performed by the nurse. Therefore, in this scenario, the least screening assessment to be used by the nurse would be radiologic procedures.

Correct Answer: B

Rationale: In the situation of an obstetric emergency requiring immediate delivery, the priority nursing action is to prepare the delivery room for the birth. This involves ensuring that all necessary supplies and equipment are readily available, the bed is adjusted to the appropriate position, and the healthcare team is prepared to assist with the birth. By expeditiously preparing the delivery room, the healthcare team can facilitate a safe and timely delivery for both the mother and the baby. Notifications to the healthcare provider, administering intravenous fluids, and continuous fetal monitoring can be done simultaneously but preparing the delivery room takes precedence to ensure a prompt response to the emergent situation.