HESI LPN
Adult Health 2 Exam 1
1. What is the homeostatic cellular transport mechanism that moves water from a hypotonic to a hypertonic fluid space?
- A. Filtration
- B. Diffusion
- C. Osmosis
- D. Active transport
Correct answer: C
Rationale: The correct answer is C: Osmosis. Osmosis is the homeostatic cellular transport mechanism that moves water from a hypotonic to a hypertonic fluid space to maintain cellular balance. In osmosis, water moves across a semi-permeable membrane from an area of low solute concentration (hypotonic) to an area of high solute concentration (hypertonic). This process helps regulate the water content inside cells. Choices A, B, and D are incorrect. Filtration involves the movement of solutes and solvents through a membrane due to a pressure difference, diffusion is the movement of solutes from an area of high concentration to low concentration, and active transport requires energy to move substances against their concentration gradient.
2. A client is being treated for heart failure. What should the nurse monitor to evaluate treatment effectiveness?
- A. Daily weight
- B. Electrolyte levels
- C. Urine output
- D. All of the above
Correct answer: D
Rationale: Monitoring daily weight, electrolyte levels, and urine output is crucial in evaluating treatment effectiveness for heart failure. Daily weight monitoring helps assess fluid retention or loss, changes in electrolyte levels can indicate imbalances affecting heart function, and urine output monitoring provides insights into kidney function and fluid balance. Therefore, all options are essential components in assessing the patient's fluid status and response to treatment, making 'All of the above' the correct answer. Choices A, B, and C are incorrect individually as they only represent partial aspects of monitoring heart failure treatment effectiveness.
3. The client with a new diagnosis of type 2 diabetes is being taught about diet management by the nurse. Which statement by the client indicates effective learning?
- A. I should not avoid all carbohydrates
- B. I can eat whatever I want as long as I take my medication
- C. I need to eat regular meals and snacks to maintain my blood sugar levels
- D. I will decrease my intake of sugary foods to prevent low blood sugar
Correct answer: C
Rationale: Choice C is the correct answer because eating regular meals and snacks is crucial for maintaining stable blood sugar levels in individuals with diabetes. This approach helps prevent spikes and drops in blood sugar, promoting better management of the condition. Choices A, B, and D are incorrect. Avoiding all carbohydrates is not recommended as they are a major energy source and can be part of a balanced diet; eating whatever one wants while relying solely on medication can lead to uncontrolled blood sugar levels and complications; decreasing sugary foods intake can actually contribute to high blood sugar levels rather than preventing low blood sugar.
4. When counting a client's radial pulse, the nurse notes the pulse is weak and irregular. To record the most accurate heart rate, what should the nurse do?
- A. Recheck the radial pulse in thirty minutes
- B. Palpate the radial pulse for thirty seconds and double the rate
- C. Count the apical pulse rate for sixty seconds
- D. Compare the radial pulse rate bilaterally and record the higher rate
Correct answer: C
Rationale: The correct answer is to count the apical pulse rate for sixty seconds. The apical pulse is more accurate, especially when peripheral pulses are weak or irregular. Counting the apical pulse for a full minute provides a more precise heart rate measurement. Option A is incorrect because waiting for thirty minutes is unnecessary and could delay potential interventions. Option B is incorrect because doubling the radial pulse rate may not provide an accurate representation of the heart rate. Option D is incorrect because comparing radial pulses bilaterally does not give the most accurate heart rate measurement; the apical pulse is preferred in this situation.
5. To assess pedal pulses, which arterial sites should the nurse palpate? (Select all that apply)
- A. Posterior tibial artery
- B. Radial artery
- C. External iliac artery
- D. Dorsalis pedis artery
Correct answer: D
Rationale: The correct answer is D: Dorsalis pedis artery. When assessing pedal pulses, the nurse should palpate the dorsalis pedis artery and the posterior tibial artery. The radial artery is located in the wrist and is not a site for assessing pedal pulses. The external iliac artery is not a correct site for assessing pedal pulses in the lower extremities, making it the correct answer.
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