ABGs
Master Your ABGs: A Comprehensive Quiz
Welcome to the ABGs quiz! Test your knowledge on arterial blood gases and sharpen your clinical skills. This quiz consists of 10 multiple-choice questions that cover essential concepts related to ABGs, including interpretation, causes of acid-base imbalances, and specific clinical scenarios.
Whether you're a healthcare professional or a student, this quiz will help you:
- Understand key concepts in blood gas analysis
- Identify common patterns in ABG results
- Enhance your diagnostic skills in clinical practice
Regarding blood gases
PH is directly measured
Standard base excess is measured at an Hb of 5g/dL
Cooling causes an increase in PaCO2
Cooling causes an increase in PaO2
How is oxygen measured in an ABG machine?
Fuel Cell
Paramagnetic Analyser
Severinghaus Electrode
Clark Electrode
What findings would you expect in a patient with metabolic acidosis without compensation?
Decrease pH, decrease HCO3, normal CO2
Decrease pH, increase HCO3, normal CO2
Decrease pH, decrease HCO3, decrease CO2
Decrease pH, decrease HCO3, increase CO2
What FiO2 do nasal cannulae provide at a flow rate of 2litres/minute?
24%
28%
32%
36%
Type 1 respiratory failure will present with
PaO2 < 8kPa and PaCO2 > 6kPa
PaO2 < 8kPa and PaCO2 < 6kPa
PaO2 > 8kPa and PaCO2 > 6kPa
PaO2 > 8kPa and PaCO2 < 6kPa
The following are causes of respiratory acidosis
Respiratory depression eg. Opiates
Asthma
Incorrect ventilator settings
All of the above
Causes of a high anion gap metabolic acidosis include all except
DKA
Lactic acidosis
Addisons disease
Paracetamol overdose
What does a delta ratio of less than 0.4 indicate?
HAGMA
Metabolic alkalosis
Hyperchloremic NAGMA
Mixed metabolic and respiratory acidosis
How would you calculate the expected HCO3 in a patient with an acute respiratory acidosis?
1mmol/L increase in HCO3 for every 10mmHg increase in PaCO2
4mmol/L increase in HCO3 for every 10mmHg increase in PaCO2
2mmol/L decrease in HCO3 for every 10mmHg decrease in PaCO
5mmol/L decrease in HCO3 for every 10mmHg decrease in PaCO2
In a pregnant female, what seemingly normal abg finding would actually be concerning?
HCO3 20mml/L
Ph 7.40
PaCO2 42mmHg
PaO2 105mmHg
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