ATI RN
Fluid and Electrolytes ATI
1. A nurse in the medical-surgical unit is giving a patient with low blood pressure a hypertonic solution, which will increase the number of dissolved particles in his blood, creating pressure for fluids in the tissues to shift into the capillaries and increase the blood volume. Which of the following terms is associated with this process?
- A. Hydrostatic pressure
- B. Osmosis and osmolality
- C. Diffusion
- D. Active transport
Correct answer: B
Rationale: Osmosis is the movement of fluid from a region of low solute concentration to a region of high solute concentration across a semipermeable membrane. The number of dissolved particles contained in a unit of fluid determines the osmolality of a solution, which influences the movement of fluid between the fluid compartments. Giving a patient who has low blood pressure a hypertonic solution will increase the number of dissolved particles in the blood, creating pressure for fluids in the tissues to shift into the capillaries and increase the blood volume. Option A is incorrect; hydrostatic pressure refers to changes in water or volume related to water pressure. Option C is incorrect; diffusion is the movement of solutes from an area of greater concentration to lesser concentration. The solutes in an intact vascular system are unable to move, so diffusion should not normally take place. Option D is incorrect; active transport is the movement of molecules against the concentration gradient and requires ATP as an energy source. This process typically takes place at the cellular level and is not involved in vascular volume changes.
2. A client with major depressive disorder expresses feelings of hopelessness. Which nursing intervention should the nurse implement to address these feelings?
- A. Encourage the client to engage in physical activity.
- B. Provide opportunities for the client to make decisions.
- C. Help the client identify positive aspects of their life.
- D. Encourage the client to verbalize feelings of hopelessness.
Correct answer: C
Rationale: When a client with major depressive disorder expresses feelings of hopelessness, helping them identify positive aspects of their life can be an effective nursing intervention. This approach can assist in shifting their focus from negativity to positivity, promoting a sense of hope and potentially improving their overall outlook and well-being. By highlighting the positive aspects, the nurse can support the client in recognizing reasons for hope and encourage a more optimistic perspective, which can aid in addressing and alleviating feelings of hopelessness. Encouraging physical activity (Choice A) may be beneficial for overall well-being but may not directly address feelings of hopelessness. Providing opportunities for decision-making (Choice B) can empower the client but may not specifically target feelings of hopelessness. Encouraging verbalization of feelings (Choice D) is important but may not be as effective as helping the client shift their focus to positive aspects of life.
3. Theorists who contend that powerful negative events in the first few years cannot be fully overcome by later, more positive ones emphasize __________.
- A. plasticity
- B. stability
- C. nurture
- D. discontinuity
Correct answer: B
Rationale: Theorists who emphasize stability argue that powerful negative events early in life cannot be completely overcome by later, more positive experiences. They believe that early experiences have a lasting impact on development and are not easily erased or reversed by subsequent events. This perspective contrasts with the idea of plasticity, which suggests that development can be influenced by experiences at any point in life, and that individuals have the capacity for change and growth throughout the lifespan. 'Nurture' does not directly address the concept of overcoming negative events, while 'discontinuity' refers to developmental stages being separate and distinct, not the idea that negative events early in life persist despite later positive experiences.
4. A client starting highly active antiretroviral therapy (HAART) for HIV infection is being educated by a nurse on preventing medication resistance. What information should the nurse provide the client about resistance?
- A. Taking low dosages of antiretroviral medication minimizes resistance.
- B. Taking one antiretroviral medication at a time minimizes resistance.
- C. Taking medication at the same time daily without missing doses minimizes resistance.
- D. Changing the medication regimen when adverse effects occur minimizes resistance.
Correct answer: C
Rationale: To prevent the development of medication resistance, it is crucial for the client to take antiretroviral medication consistently at the same time daily without missing doses. This practice helps maintain effective drug levels in the body, reducing the risk of resistance development.
5. What is the priority intervention for a patient with a suspected pulmonary embolism?
- A. Administer oxygen
- B. Administer anticoagulants
- C. Prepare for surgery
- D. Monitor oxygen saturation
Correct answer: A
Rationale: The correct answer is A: Administer oxygen. Administering oxygen is the priority intervention for a patient with a suspected pulmonary embolism to improve oxygenation levels. In pulmonary embolism, there is a blockage in one of the pulmonary arteries, leading to decreased oxygen exchange. Administering oxygen helps increase oxygen saturation levels. Anticoagulants (Choice B) are essential in the treatment of pulmonary embolism but are not the initial priority intervention. Surgery (Choice C) is not typically the first-line treatment for pulmonary embolism. Monitoring oxygen saturation (Choice D) is important but administering oxygen takes precedence as the immediate action to address hypoxemia.
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