Arterial Blood Gases

Question 1

Saturation of peripheral Oxygen: Norm values

when is supplemental O2 indicated?

Answer 1

SpO2 = 95-100% (of arterial hemoglobin is saturated with O2)

<88%

Question 2

Partial pressure of Oxygen in arterial blood: Norm

when is supplemental O2 indicated?

Answer 2

PaO2 = 80-100 mmHg

<55 mmHg

Question 3

Partial pressure of CO2 in arterial blood: Norm

What kind of relationship with pH?

Answer 3

PaCO2 = 35-45 mmHg

INVERSE

Question 4

How does COPD effect PaO2 and PaCO2?

Answer 4

PaO2 will be lower; PaCO2 will be higher

Question 5

Normal range for blood pH

Norm value of Bicarb and relationship w/ pH?

Answer 5

norm pH = 7.35-7.45
norm Bicarbonate ion = 22-28
DIRECT

Question 6

Respiratory Acidosis: symptoms and causes

Answer 6

confusion, headache, dyspnea. COPD, myasthenia

Question 7

Respiratory Alkalosis: symptoms and causes

Answer 7

dizziness, syncope,parastesia. hyperventilation, sepsis, fever, liver disease.

Question 8

Metabolic Acidosis: symptoms and causes

Answer 8

Nausea, lethargy. Bicarbonate deficient, renal failure, diabetes, alcohol, starvation, loss of alkaline body fluids.

Question 9

Metabolic Alkalosis: symptoms and causes

Answer 9

weakness. Vomiting, hypokalemia, diuretics, fluid loss.