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The nurse is reviewing the results of a sweat test performed on a child diagnosed with cystic fibrosis (CF). Which finding should the nurse identify as supporting this diagnosis?
- A. An evening sweat potassium concentration greater than 60 mEq/L
- B. A sweat chloride concentration that is consistently greater 60 mEq/L
- C. An early morning sweat chloride concentration of less than 40 mEq/L
- D. A sweat potassium concentration that is consistently less than 40 mEq/L
Correct Answer: B
Rationale: Cystic fibrosis is a chronic multisystem disorder characterized by exocrine gland dysfunction. A consistent finding of abnormally high chloride concentrations in the sweat is a unique characteristic of CF. Normally the sweat chloride concentration is less than 40 mEq/L. A sweat chloride concentration greater than 60 mEq/L is diagnostic of CF. Potassium concentration is unrelated to the sweat test.
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The nurse is caring for a client with a nasogastric tube that is attached to low suction. If the client's HCO3- is 30, which additional value is most likely to be noted in this client?
- A. pH 7.52
- B. pH 7.36
- C. pH 7.25
- D. pH 7.20
Correct Answer: A
Rationale: Loss of gastric fluid via nasogastric suction or vomiting causes metabolic alkalosis because of the loss of hydrochloric acid (HCl), an acid secreted in the stomach. This occurs as HCO3 rises above normal. Thus, the loss of hydrogen ions in the HCl results in alkalosis. A pH above 7.45 would be noted.
A client seeks medical attention for intermittent signs and symptoms that suggest a diagnosis of Raynaud's disease. The nurse should assess the trigger of these signs/symptoms by asking which question?
- A. Does being exposed to heat seem to cause the episodes?
- B. Do the signs and symptoms occur while you are asleep?
- C. Does drinking coffee or ingesting chocolate seem related to the episodes?
- D. Have you experienced any injuries that have limited your activity levels lately?
Correct Answer: C
Rationale: Raynaud's disease is vasospasm of the arterioles and arteries of the upper and lower extremities. It produces closure of the small arteries in the distal extremities in response to cold, vibration, or external stimuli. Episodes are characterized by pallor, cold, numbness, and possible cyanosis of the fingers, followed by erythema, tingling, and aching pain. Attacks are triggered by exposure to cold, nicotine, caffeine, trauma to the fingertips, and stress. Prolonged episodes of inactivity are unrelated to these episodes.
A client is admitted to the hospital with a diagnosis of Cushing's syndrome. The nurse monitors the client for which problem that is likely to occur with this diagnosis?
- A. Hypovolemia
- B. Hypoglycemia
- C. Mood disturbances
- D. Deficient fluid volume
Correct Answer: C
Rationale: Cushing's syndrome is a metabolic disorder resulting from the chronic and excessive production of cortisol. When Cushing's syndrome develops, the normal function of the glucocorticoids becomes exaggerated and the classic picture of the syndrome emerges. This exaggerated physiological action can cause mood disturbances, including memory loss, poor concentration and cognition, euphoria, and depression. It can also cause persistent hyperglycemia along with sodium and water retention (hypernatremia), producing edema (hypervolemia; fluid volume excess), and hypertension.
The nurse performs the Glasgow Coma Scale while assessing a client with a brainstem injury. Which additional interventions should the nurse be prepared to implement? Select all that apply.
- A. Assisting with arterial blood gases
- B. Assisting with a lumbar puncture
- C. Assessing cranial nerve functioning
- D. Assessing respiratory rate and rhythm
- E. Assessing pulmonary wedge pressure
- F. Assessing cognitive abilities, including memory
Correct Answer: C,D
Rationale: Assessment should be specific to the area of the brain involved. Assessing the respiratory status and cranial nerve function is a critical component of the assessment process in a client with a brainstem injury because the respiratory center is located in the brainstem. Options 1, 2, 5, and 6 are not necessary based on the data in the question.
During the postoperative period, the client who underwent a pelvic exenteration reports pain in the calf area. What action should the nurse take?
- A. Ask the client to walk and observe the gait.
- B. Lightly massage the calf area to relieve the pain.
- C. Check the calf area for temperature, color, and size.
- D. Administer PRN morphine sulfate as prescribed for postoperative pain.
Correct Answer: C
Rationale: The nurse monitors the postoperative client for complications such as deep vein thrombosis, pulmonary emboli, and wound infection. Pain in the calf area could indicate a deep vein thrombosis. Change in color, temperature, or size of the client's calf could also indicate this complication. Options 1 and 2 could result in an embolus if in fact the client had a deep vein thrombosis. Administering pain medication for this client is not the appropriate nursing action since further assessment needs to take place.