Abgs And Respiratory Exam Preparation Test Bank With Correct Answers

ABGS AND RESPIRATORY EXAM
PREPARATION TEST BANK WITH CORRECT
ANSWERS

●● What pH indicates acidosis?
Answer: A pH below 7.35.


●● What pH indicates alkalosis?
Answer: A pH above 7.45.


●● What is the normal PaCO2 range?
Answer: 35-45 mm Hg.


●● What is the professor-confirmed normal HCO3- range?
Answer: 22-28 mEq/L.


●● What is the normal PaO2 range?
Answer: 80-100 mm Hg.


●● Which organ system regulates PaCO2?
Answer: The lungs.

,●● Which organs regulate hydrogen ions and bicarbonate?
Answer: The kidneys.


●● What happens to pH when CO2 increases?
Answer: Hydrogen ions increase and pH falls, making the blood more
acidic.


●● What happens when ventilation increases?
Answer: More CO2 is exhaled, PaCO2 and hydrogen ions decrease, and
pH rises.


●● How quickly does respiratory compensation begin?
Answer: Within seconds to minutes.


●● How does kidney compensation compare with respiratory
compensation?
Answer: It is slower but more powerful.


●● How do the kidneys compensate for chronic CO2 retention in
COPD?
Answer: They excrete more hydrogen ions and return more bicarbonate
to the blood.

, ●● What ABG component represents the respiratory system?
Answer: PaCO2.


●● What effect does a high PaCO2 have?
Answer: An acidic effect.


●● What effect does a low PaCO2 have?
Answer: An alkaline effect.


●● What ABG component represents the metabolic system?
Answer: HCO3- (bicarbonate).


●● What effect does a low HCO3- have?
Answer: An acidic effect.


●● What effect does a high HCO3- have?
Answer: An alkaline effect.


●● What is the ABG pattern of respiratory acidosis?
Answer: pH down and PaCO2 up; HCO3- is normal if uncompensated
or increased with compensation.