PaCO2 level indicates the effectiveness of:
Kidney function
Bicarbonate buffers
Phosphate buffers
Lung ventilation
The Correct Answer is D
Choice A reason: Kidney function is not indicated by the PaCO2 level, but rather by the creatinine and blood urea nitrogen (BUN) levels. The kidneys are responsible for regulating the HCO3- level, which is the other component of the carbonic acid-bicarbonate buffer system.
Choice B reason: Bicarbonate buffers are not indicated by the PaCO2 level, but rather by the HCO3- level. Bicarbonate buffers are substances that can accept or donate hydrogen ions to maintain the pH of the blood. They are part of the carbonic acid-bicarbonate buffer system, which is the main buffer system in the body.
Choice C reason: Phosphate buffers are not indicated by the PaCO2 level, but rather by the PO4^3^- level. Phosphate buffers are substances that can accept or donate hydrogen ions to maintain the pH of the intracellular fluid and the urine. They are part of the phosphoric acid-phosphate buffer system, which is the second most important buffer system in the body.
Choice D reason: Lung ventilation is indicated by the PaCO2 level, which is the partial pressure of carbon dioxide in the blood. Lung ventilation is the process of moving air in and out of the lungs, which affects the amount of carbon dioxide exhaled. The lungs are responsible for regulating the PaCO2 level, which is the other component of the carbonic acid-bicarbonate buffer system.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: Respiratory alkalosis is caused by hyperventilation, which lowers the carbon dioxide levels in the blood and raises the pH. This is not likely to occur in a client with a nasogastric tube on low suction.
Choice B reason: Metabolic acidosis is caused by an excess of acids or a loss of bases in the body, which lowers the pH. This can occur in conditions such as diabetic ketoacidosis, renal failure, or diarrhea. This is not likely to occur in a client with a nasogastric tube on low suction.
Choice C reason: Respiratory acidosis is caused by hypoventilation, which raises the carbon dioxide levels in the blood and lowers the pH. This can occur in conditions such as chronic obstructive pulmonary disease, asthma, or sedative overdose. This is not likely to occur in a client with a nasogastric tube on low suction.
Choice D reason: Metabolic alkalosis is caused by a loss of acids or an excess of bases in the body, which raises the pH. This can occur in conditions such as vomiting, gastric suction, or diuretic use. This is the most likely acid-base disorder to occur in a client with a nasogastric tube on low suction, as the tube removes gastric acid from the stomach.
Correct Answer is A
Explanation
Choice A reason: This is correct because an electrolyte is a substance that dissociates into ions when dissolved in water, and can conduct electricity. Some examples of electrolytes in the body are sodium, potassium, calcium, chloride, and bicarbonate.
Choice B reason: This is incorrect because an electrolyte is not a solid or a gas, but a dissolved substance. Electrolytes are essential for maintaining fluid balance, nerve impulses, muscle contractions, and acid-base balance in the body.
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