Excelonline

CURRENT ABG INTERPRETATION EXAM QUESTIONS AND ANSWERS 2025

What is the 1st step in ABG interpretation? Allen's test 2. What is hypoxemia? Low oxygen in the blood 3. What is acidaemia [pH value, H+ ions]? pH < 7.35 Increase in H+ ions 4. What is alkalaemia [pH value, H+ ions]? pH > 7.45 Decrease in H+ ions 5. PaCO2 is regulated by what organ? Lungs

pH normal range 7.35-7.45 2. PCO2 normal range 35-45 3. HCO3 normal range 22-26 4. B.E. normal range + or -2 5. PO2 normal range 80-100 mmHg 6. O2 Sat normal Range > 95%

Interpretation: pH: 7.34 pCO2: 33.9 pO2: 85.2 HCO3: 18.2 B.E: -6.2

normal body pH 7.35-7.45 2. perfect pH is 7.4 3. below 7.35, pH is acidosis 4. above 7.5, pH is alkaline 5. when body is acidic it tries to... compensate to bring pH back up & become balanced

What is the normal pH range in an ABG? 7.35 - 7.45 What is the normal pCO2 range in an ABG? 35 - 45 mmHg What is the normal HCO3 (bicarbonate) range in an ABG? 22 - 26 mEq/L What is the normal PaO2 in an ABG? 80 - 100 mmHg What does a high pCO2 indicate? Respiratory acidosis (pCO2 is an acid). What does a low pCO2 indicate? Respiratory alkalosis. What does a high HCO3 indicate?

Why is a normal PaCO2 a concern in a hypoxic asthmatic patient? A sign that they are tiring and need ITU intervention If there is a very low PaO2 in a patient who looks completely well, what might've happened? Might be a venous sample What is normal PaO2 (room air)? >10kPa (75mmHg) 10kPa lower than the % inspired concentration FiO2 What is normal PaO2 on oxygen? E.g. 40% oxygen should have PaO2 approx. 30kPa What is the approx. FiO2 for 1L/min nasal cannula? 24% What is the approx....

1. Step 1: What is the normal pH range? 7.35-7.45 2. Step 2: What does pH < 7.35 indicate? Acidosis 3. Step 3: What does pH > 7.45 indicate? Alkalosis 4. Step 4: What if pH is normal but CO₂ or HCO₃⁻ is abnormal? Fully compensated 5. Step 5: What is the normal PaCO₂ range? 35-45 mmHg 6. Step 6: What does PaCO₂ > 45 mean? Respiratory acidosis (CO₂ is acidic) 7. Step 7: What does PaCO₂ < 35 mean? Respiratory alkalosis (CO₂ is basic) 8. Step 8: What is...

acid base balance= gold standard metabolic and respiratory are the systems lungs and kidneys are the organs Bicarbonate abbreviation HCO3 normal bicarbonate levels 22-26 mEq/L what muscles make up the neck scalenus anterior, scalenus medius, and diaphragm, external intercostals, pecwhat are the muscles of inspiration toralis major and minor, scalenes, sternocleidomastoid, and trapezius external intercostals between the ribs what is the major respiratory muscle diaphragm

List the indications for an ABG. Describe the methodology for looking at ABGs What is type 1 respiratory failure? What is type 2 respiratory failure? Hypoxia = SpO2 <94%, shock, reduced consciousness, respiratory distress, smoke inhalation, chronic respiratory disease, acutely unwell patient and assessment for long term oxygen therapy. 1) check patient details 2)check PaO2 - are they hypoxic? Type 1 or 2 RF? 3) check pH - acidotic (pH<7.35/H+>45) or alkalotic (pH>7.35/H+&l...