ABG Oxygenation | Arterial Blood Gas NCLEX & Nursing School Exams Like A Boss

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ABG OXYGENATION NCLEX QUIZ QUESTIONS

Question 1: The nurse is caring for a patient in active respiratory distress. The patient is experiencing tachypnea, hypotension, and dysrhythmias. Upon assessment, the patient arterial blood gas results are as follows: pH 7.50, PaCO2 25, HCO3 24, PaO2 70. What condition is manifesting based on the ABG results?

  1. Partially Compensated Respiratory Acidosis with hyperoxia
  2. Compensated Respiratory Acidosis with hyperoxia
  3. Partially Compensated Respiratory Alkalosis with hypoxemia
  4. Uncompensated Respiratory Alkalosis with hypoxemia

 

Question 2: The nurse is reviewing a patient’s arterial blood gas results as follows: pH 7.30, PaCO2 50 mmHg, HCO3 24 mmHg, and PaO2 75 mmHg. What early clinical manifestations might the nurse observe associated with the underlying hypoxemia? SELECT ALL THAT APPLY

  1. Restlessness
  2. Irritability
  3. Tachypnea
  4. Hypotension
  5. Violent Behavior

 

Question 3: The nurse is caring for an 87-year-old female presenting with persistent respiratory distress and worsening hypoxemia (PaO2 55 mmHg). She appears to be lethargic, weak, hypotensive, and slow respirations. She is diagnosed with mild Acute Respiratory Distress Syndrome (ARDS). What is the priority intervention for the nurse based on these findings?

  1. Provide blood transfusions for blood loss
  2. Provide oxygen via nasal cannula (2L)
  3. Prepare for mechanical ventilation
  4. Prepare to place a nasogastric tube for suctioning




 

ABG OXYGENATION NCLEX QUIZ ANSWERS

Question 1: The nurse is caring for a patient in active respiratory distress. The patient is experiencing tachypnea, hypotension, and dysrhythmias. Upon assessment, the patient arterial blood gas results are as follows: pH 7.50, PaCO2 25, HCO3 24, PaO2 70. What condition is manifesting based on the ABG results?

  1. Partially Compensated Respiratory Acidosis with hyperoxia
  2. Compensated Respiratory Acidosis with hyperoxia
  3. Partially Compensated Respiratory Alkalosis with hypoxemia
  4. Uncompensated Respiratory Alkalosis with hypoxemia

Normal ABG levels include pH is between 7.35 – 7.45, PaCO2 35 – 45, HCO3 21 – 28. The pH is greater than 7.45 making it alkalotic. The PaCO2 is less than 35 making it alkalotic. The HCO3 is normal. The PaO2 is less than 80 showing hypoxemia. The results show uncompensated respiratory alkalosis with hypoxemia.

 

Question 2: The nurse is reviewing a patient’s arterial blood gas results as follows: pH 7.30, PaCO2 50 mmHg, HCO3 24 mmHg, and PaO2 75 mmHg. What early clinical manifestations might the nurse observe associated with the underlying hypoxemia? SELECT ALL THAT APPLY

  1. Restlessness
  2. Irritability
  3. Tachypnea
  4. Hypotension
  5. Violent Behavior

Early signs of hypoxemia include mental status changes (restlessness, agitation, irritability, confusion), vital sign changes (tachypnea, tachycardia, hypertension), and patient positioning (accessory muscle use, paradoxical breathing, tripoding).

 

Question 3: The nurse is caring for an 87-year-old female presenting with persistent respiratory distress and worsening hypoxemia (PaO2 55 mmHg). She appears to be lethargic, weak, hypotensive, and slow respirations. She is diagnosed with mild Acute Respiratory Distress Syndrome (ARDS). What is the priority intervention for the nurse based on these findings?

  1. Provide blood transfusions for blood loss
  2. Provide oxygen via nasal cannula (2L)
  3. Prepare for mechanical ventilation
  4. Prepare to place a nasogastric tube for suctioning

The patient is exhibiting severe hypoxemia and is showing late signs of hypoxemia. In addition, the patient has been diagnosed with Acute Respiratory Distress Syndrome (ARDS) making it difficult for the lungs to exchange carbon dioxide and oxygen. The best treatment for developing ARDS is preparing for mechanical ventilation to facilitate gas exchange before lungs become stiff and fibrosed.