preload refers to
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Nursing Elites

NCLEX-RN

NCLEX RN Exam Prep

1. What does preload refer to?

Correct answer: B

Rationale: Preload refers to the volume of blood that enters the right side of the heart. This volume stretches the fibers in the heart before contraction. Preload is an essential factor in determining the force of ventricular contraction. Choices A, C, and D are incorrect. Choice A is incorrect because preload is specifically related to the volume of blood entering the right side of the heart. Choices C and D are incorrect as they refer to afterload, which is the pressure that the heart must overcome to pump blood out of the ventricles into the systemic or pulmonary circulation.

2. The rehabilitation nurse wishes to make the following entry into a client's plan of care: 'Client will reestablish a pattern of daily bowel movements without straining within two months.' The nurse would write this statement under which section of the plan of care?

Correct answer: D

Rationale: The correct answer is 'Long-term goals.' Long-term goals are designed to describe changes in client behavior expected over a time frame greater than one week. In this case, the goal of reestablishing a pattern of daily bowel movements without straining within two months falls under a long-term goal. Long-term goals are aimed at restoring normal functioning in a problem area and are beneficial for healthcare workers caring for the client across different settings. Choices A, B, and C are incorrect because nursing diagnosis/problem list, nursing orders, and short-term goals do not encompass the desired timeframe or level of expected change in this scenario.

3. The healthcare professional is preparing to use a stethoscope for auscultation. Which statement is true regarding the diaphragm of the stethoscope?

Correct answer: A

Rationale: The diaphragm of the stethoscope is designed for listening to high-pitched sounds like breath, bowel, and normal heart sounds. It should be firmly held against the person's skin to ensure optimal sound transmission, leaving a ring after use. On the other hand, the bell of the stethoscope is ideal for detecting soft, low-pitched sounds such as extra heart sounds or murmurs. Therefore, the diaphragm is not used to block out low-pitched sounds but rather to enhance the detection of high-frequency sounds.

4. A healthcare professional is considering which patient to admit to the same room as a patient who had a liver transplant 3 weeks ago and is now hospitalized with acute rejection. Which patient would be the best choice?

Correct answer: D

Rationale: The patient with chronic pancreatitis is the best choice to admit to the same room as a patient who had a liver transplant and is experiencing acute rejection. This is because the patient with chronic pancreatitis does not pose an infection risk to the immunosuppressed patient who had a liver transplant. On the other hand, patients receiving chemotherapy for cancer or those with wound infections are at risk for infections, which could endanger the immunosuppressed patient with acute rejection.

5. A nurse is preparing to change a client's dressing for a burn wound on his foot. Which of the following interventions is appropriate for this process?

Correct answer: A

Rationale: When changing the dressing for a burn wound, it is essential to follow appropriate interventions to prevent infection, reduce pain, and support healing. In this scenario, after removing the old dressing, it is crucial to wash the wound gently with a suitable cleanser, rinse the area thoroughly, and then pat it dry. This process helps in maintaining cleanliness, reducing the risk of infection, and providing a conducive environment for healing. Binding the wound tightly (Choice B) can impede circulation and delay healing. Contacting the physician after the dressing change (Choice C) may be necessary in specific situations but is not a standard step in routine dressing changes. Providing analgesics after the procedure (Choice D) is important for pain management but is not directly related to the dressing change itself.

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