Three body systems work at different speeds to keep the pH in the narrow range of normal, The order of effectiveness for these three systems is:
kidneys, lungs, blood/chemical buffers
chemical buffers, kidneys, lungs
lungs, kidneys, and blood/chemical buffers
blood/chemical buffers, lungs, kidneys
The Correct Answer is D
Rationale:
A. Kidneys are the slowest to respond, so this order is incorrect.
B. Kidneys are slower than lungs, so this order is incorrect.
C. Lungs respond faster than kidneys but slower than chemical buffers, so this order is incorrect.
D. Chemical buffers act immediately to neutralize pH changes (first line), lungs adjust CO₂ levels within minutes (second line), and kidneys regulate acid-base balance over hours to days (third line), making this the correct order.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["B","C","D"]
Explanation
Rationale:
A. Flushing is not a typical sign of metabolic alkalosis; pallor may occur, but flushing is more associated with fever or vasodilation.
B. Hyperactive reflexes can occur due to increased neuromuscular excitability associated with alkalosis.
C. Metabolic alkalosis can lead to shallow, slow respirations as a compensatory response to retain CO₂.
D. Cardiac dysrhythmias may occur due to hypokalemia and electrolyte imbalances often present in metabolic alkalosis.
E. Abdominal pain is not a hallmark feature of metabolic alkalosis — it is more associated with gastrointestinal disorders like peritonitis or infections.
Correct Answer is D
Explanation
Rationale:
A. Cabbage is low in potassium and not ideal for correcting hypokalemia.
B. White rice is low in potassium and does not help increase potassium levels.
C. Cheddar cheese contains minimal potassium and is not effective for raising serum potassium.
D. Bananas are rich in potassium and are appropriate to help correct hypokalemia caused by furosemide use.
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