Lab Tests Flashcards
1
Q
ABG is used to evaluate:
A
- Acid-base status (pH)
- Ventilation (PaCO2)
- Oxygenation of arterial blood (PaO2)
2
Q
Normal pH
A
- 4
7. 35-7.45
3
Q
Normal PaCO2
A
40 mm Hg at sea level
35-45 mm Hg range
4
Q
Normal PaO2
A
97 mm Hg at sea level
80-100 mm Hg
5
Q
Reason for measuring amount of creatine phosphokinase and troponin
CK-MB test
A
Certain enzymes leak out of heart after an MI
Appears in blood approximately 4 hrs after infarction, peaks at 12-24 hrs, and declines over 48-72 hrs
6
Q
Low hematocrit may indicate
A
Anemia
Blood loss
Vitamin or mineral deficiencies
7
Q
High hematocrit may indicate
A
Dehydration Polycythemia Vera (overproduction of RBCs)
8
Q
Normal hemoglobin: males
A
13.3-16.2 gm/dL
9
Q
Normal hemoglobin: females
A
12.0-15.8 gm/dL
10
Q
Total cholesterol: desirable
A
200 mg/dL
11
Q
Total cholesterol: high
A
Over 240 mg/dL
12
Q
LDL: optimal
A
less than 100 mg/dL
13
Q
LDL: very high
A
≥ 190 mg/dL
14
Q
HDL: low
A
Less than 40mg/dL
15
Q
HDL: high
A
≥ 60 mg/dL
