NR572
ConceptsMidterm Exam:
and Correct Key
Answers,
Latest 2025/2026
Nursing|Graded Exams of
A+ Certified
Pass
What is pH? (ABG) - ANSWERS-The pH is the concentration of hydrogen ions and
determines the acidity or alkalinity of body fluids.
-pH of 7.35 indicates acidosis
-pH greater than 7.45 indicates alkalosis.
What is PaCO2? (ABG) - ANSWERS-PaCO2 or partial pressure of carbon dioxide
shows the adequacy of the gas exchange between the alveoli and the external
environment (alveolar ventilation)
What is the normal range for pH? (ABG) - ANSWERS-The normal ABG level for pH
is 7.35 to 7.45.
What is the normal range for PaCO2? (ABG) - ANSWERS-For PaCO2, the normal
range is 35 to 45 mmHg (respiratory determinant).
What is PaO2? (ABG) - ANSWERS-PaO2 or partial pressure of oxygen or PAO2
indicates the amount of oxygen available to bind with hemoglobin.
The pH plays a role in the combining power of oxygen with hemoglobin: a low pH
means there is less oxygen in the hemoglobin.
For PaO2, the normal range is 75 to 100 mmHg
What is HCO3? (ABG) - ANSWERS-HCO3 or bicarbonate ion is an alkaline
substance that comprises over half of the total buffer base in the blood.
, A deficit of bicarbonate and other bases indicates metabolic acidosis.
When there is an increase in bicarbonates present, then metabolic alkalosis
results.
What is the normal range for HCO3? (ABG) - ANSWERS-the normal range is 22 to
26 mEq/L (metabolic determinant)
what are the 3 areas of determination for ABG analysis? - ANSWERS-1. Acidosis vs.
alkalosis
2. metabolic vs. respiratory
3. fully compensated, partially compensated, or uncompensated.
fully compensated if: (TicTacToe) - ANSWERS-It is FULLY COMPENSATED if pH is
normal.
partially compensated if: (TicTacToe) - ANSWERS-It is PARTIALLY COMPENSATED if
all three (3) values are abnormal.
Uncompensated if: (TicTacToe) - ANSWERS-It is UNCOMPENSATED if PaCO2 or
HCO3 is normal and the other is abnormal.
Acidosis, Normal or Alkalosis? blood pH is between 7.35 to 7.39 - ANSWERS-the
interpretation is NORMAL but SLIGHTLY ACIDOSIS, place it under the NORMAL
column.
Acidosis, Normal or Alkalosis? blood pH is between 7.41 to 7.45 - ANSWERS-
interpretation is NORMAL but SLIGHTLY ALKALOSIS, place it under the NORMAL
column.
ConceptsMidterm Exam:
and Correct Key
Answers,
Latest 2025/2026
Nursing|Graded Exams of
A+ Certified
Pass
What is pH? (ABG) - ANSWERS-The pH is the concentration of hydrogen ions and
determines the acidity or alkalinity of body fluids.
-pH of 7.35 indicates acidosis
-pH greater than 7.45 indicates alkalosis.
What is PaCO2? (ABG) - ANSWERS-PaCO2 or partial pressure of carbon dioxide
shows the adequacy of the gas exchange between the alveoli and the external
environment (alveolar ventilation)
What is the normal range for pH? (ABG) - ANSWERS-The normal ABG level for pH
is 7.35 to 7.45.
What is the normal range for PaCO2? (ABG) - ANSWERS-For PaCO2, the normal
range is 35 to 45 mmHg (respiratory determinant).
What is PaO2? (ABG) - ANSWERS-PaO2 or partial pressure of oxygen or PAO2
indicates the amount of oxygen available to bind with hemoglobin.
The pH plays a role in the combining power of oxygen with hemoglobin: a low pH
means there is less oxygen in the hemoglobin.
For PaO2, the normal range is 75 to 100 mmHg
What is HCO3? (ABG) - ANSWERS-HCO3 or bicarbonate ion is an alkaline
substance that comprises over half of the total buffer base in the blood.
, A deficit of bicarbonate and other bases indicates metabolic acidosis.
When there is an increase in bicarbonates present, then metabolic alkalosis
results.
What is the normal range for HCO3? (ABG) - ANSWERS-the normal range is 22 to
26 mEq/L (metabolic determinant)
what are the 3 areas of determination for ABG analysis? - ANSWERS-1. Acidosis vs.
alkalosis
2. metabolic vs. respiratory
3. fully compensated, partially compensated, or uncompensated.
fully compensated if: (TicTacToe) - ANSWERS-It is FULLY COMPENSATED if pH is
normal.
partially compensated if: (TicTacToe) - ANSWERS-It is PARTIALLY COMPENSATED if
all three (3) values are abnormal.
Uncompensated if: (TicTacToe) - ANSWERS-It is UNCOMPENSATED if PaCO2 or
HCO3 is normal and the other is abnormal.
Acidosis, Normal or Alkalosis? blood pH is between 7.35 to 7.39 - ANSWERS-the
interpretation is NORMAL but SLIGHTLY ACIDOSIS, place it under the NORMAL
column.
Acidosis, Normal or Alkalosis? blood pH is between 7.41 to 7.45 - ANSWERS-
interpretation is NORMAL but SLIGHTLY ALKALOSIS, place it under the NORMAL
column.
