Arterial blood Gases Flashcards

1
Q

What is an arterial blood gas test

A

Tells us about gas quantities in the blood

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2
Q

Compare arterial and venous blood gas tests

A

Arterial: How well were exchanging oxygen
Venous: How utilization is going (extracting at the tissue)

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3
Q

What are normative values for pH

A

7.35-7.45

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4
Q

What are normative values for PaO2

A

80-100 mmHg

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5
Q

What are normative values for PaCO2

A

35-45 mmHg

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6
Q

What are normative values for HCO3

A

22-26 mmol/L

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7
Q

What are normative values for SaO2

A

95-100%

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8
Q

What are 3 things that arterial blood gas tests tell us

A
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9
Q

Describe this image

A

Narrow range of control within the body in terms of pH -> body cannot support life too far out of those ranges

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10
Q

How much of our body is comprised of water

A
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11
Q

Characteristics of strong Acids/Base, weak acids/base and buffers

A
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12
Q

What does ATP produced

A

CO2 so we need a way to deal with CO2 to prevent acidic accumulation

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13
Q

How is CO2 transported around the body

A
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14
Q

What is normal ratio of base to acid in the blood

A
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15
Q

<7.35 pH

A

Acidemia

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16
Q

> 7.45 pH

A

Alkalemia

17
Q

What are 2 way to eliminate metabolically produced acids in the body

A
18
Q

What is the relationship between the renal and respiratory system in terms of acid-base balance

A
19
Q

What is regulated by the kidneys and lungs

A
20
Q

If HCO3 changes first that indicates a

A

Metabolic disorder (kidneys)

21
Q

If PaCO2 changes first that is a

A

Respiratory disorder (lungs)

22
Q

What is acidosis and give 2 examples (1 metabolic and one respiratory)

A
23
Q

What is alkalosis and give 2 examples (1metabolic and 1 respiratory)

A
24
Q

What is compensation in terms of pH changes

A
25
Q

What are 3 methods of pH compensation

A
26
Q

How do buffer systems act as compensators

A
27
Q

How do respiratory regulators act as compensators

A
28
Q

How does renal regulation act as a compensator

A
29
Q

Describe lungs and kidneys when acid-base balance

A
30
Q

Describe the 2 situations that cause acidosis (lungs vs kidneys)

A
31
Q

Describe the 2 situations that cause alkalosis

A
32
Q

Steps to determine blood gas

A
33
Q

Do practice examples in one note document

A
34
Q

What are the 4 mechanisms of hypoxemia

A