Arterial Blood Gas Flashcards

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0
Q

Characteristics of metabolic alkalosis

A

High pH
Normal pCO2
High HCO3

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1
Q
What are the correct normal values for:
pH
PaO2
PaCO2
HCO3
Base excess
Lactate
A
pH = 7.35-7.45
PaO2 = 12-16 kPa
PaCO2 = 4.5-6.0 kPa
HCO3 = 22-28 mmol/l
Bass excess = -2 - +2
Lactate = 0.7-1.9 mmol/l
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2
Q

Causes of metabolic alkalosis

A

Vomiting, diuretics, antacids

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3
Q

Characteristics of metabolic acidosis

A

Low pH
Normal/low pCO2
Low HCO3

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4
Q

Causes of metabolic acidosis

A

Diabetes, renal failure, starvation, diarrhoea

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5
Q

Characteristics of respiratory alkalosis

A

High pH
Low pCO2
Normal HCO3

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6
Q

Causes of respiratory alkalosis

A

Hyperventilation, anxiety, aspirin OD

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7
Q

Characteristics of respiratory acidosis

A

Low pH
High pCO2
Normal/high HCO3

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8
Q

Causes of respiratory acidosis

A

ARDS, chronic airway limitation, head injury, cardiac arrest

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