A patient has end-stage chronic obstructive pulmonary disease (COPD). Which acid-base imbalance would be predictable in a patient with COPD?
Respiratory acidosis
Respiratory alkalosis
Metabolic alkalosis
Metabolic acidosis
The Correct Answer is A
Choice A reason: This is correct because respiratory acidosis is a condition where the blood pH is lower than the normal range of 7.35 to 7.45, due to impaired gas exchange or hypoventilation, which causes carbon dioxide to accumulate in the blood. COPD is a chronic lung disease that obstructs the airways and reduces the oxygen intake and carbon dioxide output. This leads to respiratory acidosis in the patient.
Choice B reason: This is incorrect because respiratory alkalosis is a condition where the blood pH is higher than the normal range of 7.35 to 7.45, due to hyperventilation, which lowers the carbon dioxide in the blood. COPD does not cause hyperventilation, but rather hypoventilation.
Choice C reason: This is incorrect because metabolic alkalosis is a condition where the blood pH is higher than the normal range of 7.35 to 7.45, due to a loss of acids or an excess of bases in the body. COPD does not affect the metabolic system directly, but rather the respiratory system.
Choice D reason: This is incorrect because metabolic acidosis is a condition where the blood pH is lower than the normal range of 7.35 to 7.45, due to an excess of acids or a loss of bases in the body. COPD does not affect the metabolic system directly, but rather the respiratory system.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: Sodium (Na+) imbalance can cause neurological symptoms such as confusion, seizures, or coma, but not abdominal pain or urinary retention.
Choice B reason: Calcium (Ca2+) imbalance can cause abdominal pain, urinary retention, and confusion, as well as muscle weakness, bone pain, and cardiac arrhythmias. These signs are the result of an inadequate supply of calcium, which is essential for nerve and muscle function, as well as bone health.
Choice C reason: Chloride (Cl-) imbalance can cause acid-base disorders such as metabolic acidosis or alkalosis, but not abdominal pain, urinary retention, or confusion.
Choice D reason: Phosphates (PO4^3^-) imbalance can cause bone and muscle problems, such as rickets, osteomalacia, or tetany, but not abdominal pain, urinary retention, or confusion.
Choice E reason: Potassium (K+) imbalance can cause cardiac and neuromuscular symptoms, such as arrhythmias, palpitations, muscle weakness, or paralysis, but not abdominal pain, urinary retention, or confusion.
Correct Answer is C
Explanation
Choice A reason: One slice of wheat bread is not the best source of potassium, as it contains only about 70 mg of potassium per serving. The recommended daily intake of potassium for adults is 4,700 mg.
Choice B reason: One wedge of cantaloupe is a good source of potassium, as it contains about 430 mg of potassium per serving. However, it is not the best source of potassium among the choices given.
Choice C reason: One banana is the best source of potassium among the choices given, as it contains about 420 mg of potassium per serving. Bananas are also rich in fiber, vitamin C, and antioxidants.
Choice D reason: One slice of cheddar cheese is not the best source of potassium, as it contains only about 28 mg of potassium per serving. Cheese is also high in sodium, fat, and calories, which can have negative effects on blood pressure and cholesterol levels.
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