Nokea
A client with adrenal insufficiency has a potassium level of 7.2 mEq/L. Which of the following signs or symptoms might the client exhibit with this result?
- A. Peaked T waves on the ECG
- B. Muscle spasms
- C. Constipation
- D. A prominent U wave on the ECG
Correct Answer: A
Rationale: A client with hyperkalemia may exhibit peaked T waves on an electrocardiogram. This manifestation is an early sign of high potassium levels, but diagnosis should not be based on this aspect alone. Untreated, hyperkalemia can lead to progressively worsening cardiac instability. Muscle spasms (Choice B) are more commonly associated with hypocalcemia. Constipation (Choice C) is not a typical sign of hyperkalemia. A prominent U wave on the ECG (Choice D) is associated with hypokalemia, not hyperkalemia.
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Which of the following situations might warrant a laboratory magnesium level?
- A. Hyperthyroidism
- B. Arthritis
- C. Ulcerative colitis
- D. Depression
Correct Answer: C
Rationale: Ulcerative colitis can lead to symptoms such as abdominal pain, fever, diarrhea, and weight loss. This condition may impact the absorption of certain nutrients, including magnesium. Therefore, patients with chronic gastrointestinal conditions like ulcerative colitis should be screened for electrolyte imbalances related to impaired digestion. Hyperthyroidism, arthritis, and depression do not typically directly affect magnesium levels in the same way as gastrointestinal conditions like ulcerative colitis.
Which of the following situations warrants a measurement for orthostatic hypotension?
- A. A 36-year-old male with a spinal injury
- B. An 86-year-old female with significantly altered mental status
- C. A 58-year-old female with near-syncope
- D. A 41-year-old male with acute deep vein thrombosis
Correct Answer: C
Rationale: The correct answer is a 58-year-old female with near-syncope. Orthostatic hypotension is a drop in blood pressure of greater than 20 mmHg systolic when moving from a sitting or lying position to standing. Patients at higher risk include those with syncope or near-syncope, symptomatic hypovolemia, and those prone to falls. The other choices are less likely to present with orthostatic hypotension. A spinal injury, altered mental status, and acute deep vein thrombosis are not directly associated with the immediate need for orthostatic hypotension measurement.
While caring for a client who has just come from surgery and is in the recovery room with an endotracheal tube in place, the nurse deflates the cuff on the tube and removes it. The client sits up in bed, grasps his throat, and begins to make wheezing sounds. Which of the following conditions is the most likely cause of this situation?
- A. The client is choking on part of the tube
- B. The client has anxiety
- C. The client is having a laryngospasm
- D. The client is having a normal response from anesthesia
Correct Answer: D
Rationale: After surgery, some clients may experience a laryngospasm during emergence from anesthesia. A laryngospasm can lead to the closure of the laryngeal opening due to spasm of the vocal cords. In this scenario, the client's symptoms of wheezing and throat grasping are indicative of a laryngospasm rather than choking on the tube, anxiety, or a normal response from anesthesia. The nurse should act promptly to open the airway to aid breathing and consider administering muscle relaxants as necessary.
Which of the following interventions is necessary before insertion of an arterial line into the radial artery?
- A. Ensure that the client does not need surgery
- B. Assess the client's grip strength
- C. Perform an Allen test
- D. Check a serum potassium level
Correct Answer: C
Rationale: Before inserting an arterial line into the radial artery, it is crucial to perform an Allen test. The Allen test assesses the collateral circulation to the hand by compressing both the radial and ulnar arteries. By occluding the radial artery and releasing the ulnar artery, the nurse can check if the ulnar artery can adequately supply blood to the hand if the radial artery is cannulated. This step ensures that there is adequate circulation to the hand post-insertion of the arterial line.
Choice A, ensuring that the client does not need surgery, is not directly related to the insertion of an arterial line and is not a necessary step before the procedure. Choice B, assessing grip strength, is not specific to the vascular status of the hand and does not provide information about the adequacy of collateral circulation. Choice D, checking a serum potassium level, is unrelated to the assessment of radial artery patency and collateral circulation, which are the primary concerns before arterial line insertion.
A 58-year-old client is being tested for rheumatoid arthritis. Her physician orders an erythrocyte sedimentation rate (ESR). Which of the following results is most likely to be associated with arthritis?
- A. 5 mm/hr
- B. 12 mm/hr
- C. 28 mm/hr
- D. 40 mm/hr
Correct Answer: D
Rationale: The erythrocyte sedimentation rate (ESR) measures levels of inflammation in the body. Elevated ESR levels are commonly seen in autoimmune conditions like rheumatoid arthritis due to the presence of inflammation. In women over 50 years old, a normal ESR is typically below 30 mm/hr. Therefore, a result of 40 mm/hr is more indicative of arthritis in a 58-year-old individual. Choices A, B, and C are below the normal ESR range for a woman of this age and would not be as strongly associated with arthritis.