Nokea
Which of the following IV solutions is hypertonic?
- A. Normal saline
- B. 0.45% NaCl
- C. 5% dextrose in 0.9% NaCl
- D. 0.225% NaCl
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.
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Rodolfo, an 85 year old, is admitted for comtinuous cramping pain as the result of intermittent claudication. When conducting an initial physical assessment, the nurse is unable to palpate the pedal pulses. Which of the following actions should the nurse take first?
- A. notify the physician and anticipate emergency surgery
- B. assess the apical and radial pulses for any irregularity and notify the physician
- C. elevate the foot of the bed and apply warm compress
- D. obtain a Doppler and recheck the pedal pulses
Correct Answer: D
Rationale: The correct action for the nurse to take first is to obtain a Doppler and recheck the pedal pulses. This is the correct choice because it allows the nurse to further assess the circulation in the lower extremities. By using a Doppler, the nurse can accurately detect the presence or absence of pedal pulses, which is crucial in evaluating the severity of the patient's condition. This step provides objective data that can guide the next course of action.
Choice A is incorrect because emergency surgery should not be anticipated without further assessment. Choice B is incorrect as assessing apical and radial pulses is not relevant in this situation. Choice C is incorrect as elevating the foot of the bed and applying warm compress may not address the underlying circulation issue.
Autoimmunity is defined as a phenomenon involving which of the following?
- A. Production of endotoxins that destroy B
- B. Overproduction of reagin antibody
- C. Depression of the immune response
- D. Inability to differentiate self from nonself
Correct Answer: D
Rationale: Autoimmunity is when the immune system mistakenly attacks the body's own cells. Choice D is correct because it reflects this key feature - the inability to differentiate self from nonself. This leads to the immune system targeting healthy tissues. Choices A, B, and C are incorrect as they do not accurately describe autoimmunity. Choice A refers to endotoxins destroying B cells, which is not the definition of autoimmunity. Choice B mentions overproduction of reagin antibody, which is not related to autoimmunity. Choice C is incorrect as autoimmunity does not involve depression of the immune response but rather an inappropriate immune response.
Which method of data collection will the nurse use to establish a patient’s database?
- A. Reviewing the current literature to determine evidence-based nursing actions
- B. Checking orders for diagnostic and laboratory tests
- C. Performing a physical examination
- D. Ordering medications
Correct Answer: C
Rationale: The correct answer is C: Performing a physical examination. This method allows the nurse to collect objective data directly from the patient, which is crucial in establishing a comprehensive patient database. By assessing the patient's physical condition, the nurse can gather vital information such as vital signs, overall health status, and potential areas of concern. Reviewing literature (A) and checking orders for tests (B) may provide additional insights but are not direct data collection methods. Ordering medications (D) is a treatment intervention, not a data collection method.
Why must a nurse measure the intake and output and recommend a daily fluid intake of approximately 3000 to 4000 mL for a client with pyelonephritis?
- A. To determine the clients response to the therapy
- B. To flush out the infectious microorganisms from the urinary tract
- C. To determine the location of discomfort
- D. To detect any evidence of changes
Correct Answer: B
Rationale: Correct Answer: B
Rationale: Measuring intake and output and recommending increased fluid intake for a client with pyelonephritis is crucial to help flush out infectious microorganisms from the urinary tract. By increasing fluid intake, the client will urinate more frequently, aiding in the removal of bacteria causing the infection. This helps in reducing the bacterial load in the urinary tract and promoting faster recovery. Monitoring intake and output also helps ensure the client is adequately hydrated.
Summary of Other Choices:
A: Monitoring intake and output is more about assessing hydration status and kidney function rather than the response to therapy.
C: Intake and output measurement does not directly determine the location of discomfort in pyelonephritis.
D: Monitoring intake and output is not primarily for detecting changes but for ensuring proper fluid balance and aiding in infection clearance.
Emil, just had a thyroidectomy this morning. Upon awakening, he complains of circumoral tingling, has a positive Chvostek’s sign and positive Trousseau’s sign. Nurse Ofel assesses this to be an indication of:
- A. Overstimulation of the parathyroid hormone
- B. Insufficient iodine intake
- C. inadvertent removal of the parathyroid
- D. Overuse of radioactive iodine gland
Correct Answer: A
Rationale: Rationale: The correct answer is A, overstimulation of the parathyroid hormone. After a thyroidectomy, there is a risk of unintentional damage to the parathyroid glands, leading to hypoparathyroidism. Circumoral tingling, positive Chvostek’s sign, and positive Trousseau’s sign are classic signs of hypocalcemia resulting from parathyroid insufficiency. Choices B, C, and D are incorrect because they do not explain the specific symptoms observed in Emil, which are indicative of low calcium levels due to parathyroid dysfunction.