Which of the following IV solutions is hypertonic?

Correct Answer: C

Rationale: The correct answer is C: 5% dextrose in 0.9% NaCl. This solution is hypertonic because it has a higher osmolarity compared to the other choices. The presence of dextrose and NaCl in this solution increases its solute concentration, causing water to move out of the cells by osmosis. Normal saline (A) and 0.45% NaCl (B) are isotonic solutions, meaning they have the same osmolarity as body fluids. 0.225% NaCl (D) is a hypotonic solution with lower osmolarity than body fluids.

Correct Answer: B

Rationale: The correct answer is B: Lung cancer. Lung cancer causes the most deaths in women due to its high mortality rate. It is often diagnosed at an advanced stage, leading to poorer outcomes. Breast cancer, although common, has a lower mortality rate compared to lung cancer. Brain cancer is relatively rare in comparison. Colon and rectal cancer, while significant, do not surpass lung cancer in terms of causing the most deaths in women.

Correct Answer: D

Rationale: The correct answer is D: Evaluation. After implementing nursing interventions based on priority diagnoses, the nurse must evaluate the effectiveness of these interventions to determine if the desired outcomes have been achieved. Evaluation is crucial to assess the progress, make necessary modifications, and ensure the effectiveness of the care provided. Assessment (A) is already completed before interventions are carried out. Planning (B) involves developing a care plan based on assessment findings. Implementation (C) is the actual carrying out of the interventions. Therefore, the next step after implementing nursing interventions is to evaluate their effectiveness.

Correct Answer: C

Rationale: The correct answer is C: He walked home in a cold rain. Walking in cold rain can lead to vasoconstriction, which impairs blood flow, increasing the likelihood of a sickle cell crisis in individuals with sickle cell disease. This can cause red blood cells to sickle and block blood vessels, leading to pain and tissue damage. Choices A, B, and D do not directly affect the physiology of sickle cell disease and are less likely to trigger a crisis.

Correct Answer: A

Rationale: The correct answer is A: Ensure client safety. This is the nurse's primary legal responsibility as it aligns with the ethical principle of beneficence, prioritizing the well-being and safety of the client. Ensuring client safety is essential to prevent harm and promote positive health outcomes. Following physician orders precisely (B) is important but not the primary legal responsibility of the nurse. Documenting care comprehensively (C) is crucial for accountability and continuity of care but is not the primary legal responsibility. Providing client-centered education (D) is essential for empowering clients but is not the primary legal responsibility in terms of legal accountability and duty of care.

Correct Answer: A

Rationale: The correct answer is A: The sympathetic nervous system saves fluid in response to the stress of surgery. The sympathetic nervous system is responsible for the "fight or flight" response, which includes the conservation of fluids during stressful situations. Dark amber and concentrated urine indicates dehydration, which can be a result of the sympathetic nervous system conserving fluids. B: The sympathetic nervous system does not "diereses" (increase urination) in response to stress. C: The parasympathetic nervous system is not involved in fluid conservation during stress. D: The parasympathetic nervous system does not "diereses" fluid in response to stress.

Correct Answer: C

Rationale: The correct answer is C: Performing a physical examination. This method allows the nurse to gather objective data directly from the patient's body, such as vital signs, skin condition, and overall health status. It provides a comprehensive overview of the patient's current health status and helps in establishing a baseline for further assessments and interventions. Reviewing literature (A) is important for evidence-based practice but does not directly establish a patient's database. Checking orders for tests (B) is essential but does not provide a holistic view of the patient. Ordering medications (D) is a treatment intervention and not a data collection method.

Correct Answer: B

Rationale: The correct answer is B: Fluorouracil (5-fluorouracil, 5 FU [Fluoroplex]). Fluorouracil is commonly used in chemotherapy for liver cancer to inhibit cancer cell growth. It is a pyrimidine analog that interferes with DNA synthesis. Fluoxymesterone (A) is an androgen used in hormone replacement therapy, not in liver cancer treatment. Tamoxifen (C) is an antiestrogen used in breast cancer treatment, not liver cancer. Megestrol (D) is a progestin used in hormone therapy for breast cancer and endometrial cancer, not liver cancer. Therefore, the correct choice is B as it directly targets cancer cell growth in liver cancer treatment.

Correct Answer: B

Rationale: The correct answer is B: radiation therapy. Radiation therapy uses high-energy radiation to target and destroy cancer cells while minimizing damage to surrounding healthy tissues. It is a localized treatment that is effective in shrinking tumors and preventing cancer cell growth. Surgery (A) involves physically removing the tumor and surrounding tissues, while chemotherapy (C) uses drugs to kill cancer cells throughout the body. Palliative treatment (D) focuses on symptom management and improving quality of life in advanced stages of cancer. In this case, the focus is on a form of cancer therapy involving high-energy electromagnetic radiation, making radiation therapy the most appropriate choice.