18 Questions
What do arterial blood gases (ABG) measure?
Acidity, oxygen, and carbon dioxide levels
Which blood gas test is considered the gold standard in sick patients with respiratory issues?
ABG testing
In what clinical settings are ABGs commonly performed?
ICU and ER settings
What does the venous blood gas (VBG) accurately determine?
Carbon dioxide levels
Why is arterial testing preferred over venous testing in certain patients?
Because arterial blood reflects oxygenation more accurately
What are the two important measures of a patient’s clinical status that an ABG can provide?
Oxygenation and blood acid levels
What is the main role of the bicarbonate buffer system?
Regulate the pH of body fluids
In the Henderson-Hasselbalch Equation, what does 'pK' represent?
Acid dissociation constant
How does hypoventilation impact the acid-base balance in the body?
Increases H+ and lowers pH
Which condition is associated with respiratory alkalosis?
Reduced CO2 levels
What is a common cause of metabolic acidosis?
Ethanol ingestion
How do the kidneys contribute to regulating pH in the body directly?
By excreting or reabsorbing H+ ions
What does a negative Base Excess (BE) in blood indicate?
Blood has an excess of acids
How is oxygen primarily transported in the blood?
Bound to hemoglobin
What parameter determines the oxygen saturation (sO2) in the blood?
Partial pressure of oxygen (pO2)
What is the normal range for Hemoglobin concentration in males?
13.5-17.5 g/dL
What effect do changes in pH have on protein function?
Alters their tertiary structure
How is the pH of a solution typically represented?
[H+]
Learn about blood gases and pH patterns in respiratory physiology, including the interpretation of arterial blood gases (ABG). Explore concepts from Acid-Base Physiology, Foundation Concepts, and Gas Exchange in the Thorax.
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