Laboratory Assessment

Question 1

Cholesterol

Answer 1

Range: <200 mg/dL

Elevation indicates increase risk for CAD

Question 2

Triglycerides

Answer 2

Female: 35-135 mg/dL
Male: 40-160 mg/dL

Elevation indicates increase risk for CAD

Question 3

High-Density Lipoproteins (Good cholesterol)

Answer 3

Male: More than 45 mg/dL
Female: More than 55 mg/dL

Elevations protect against CAD

Question 3

Low-Density Lipoproteins (Bad cholesterol)

Answer 3

Range: Less than 130 mg/dL

Elevation indicated increase risk for CAD

Question 4

Troponin T

Troponin I

Answer 4

Range: <0.1 ng/mL

Range: <0.03 ng/mL

Elevations indicate myocardial injury or infarction

Question 5

C-reactive protein (CRP)

Answer 5

Low risk - < 1 mg/L
High risk - > 3 mg/L

Elevation may indicate tissue infarction or damage

Question 6

PT/PTT/INR

Answer 6

INR – 0.8 – 1.1

Question 7

Hypokalemia

Answer 7

Effects:
1. Increased Electrical instability
2. Ventricular dysrhthmias
3. Increased risk for digitalis toxicity

Question 8

Hyperkalemia

Answer 8

Effects:
1. Slowed ventricular conduction
2. Peaked T-waves on ECG
3. Contraction followed by asystole

Question 9

Hypocalcemia

Answer 9

Effects:
1. Ventricular Dysrhythmias
2. Prolonged QT intervals
3. Cardiac arrest

Question 10

Hypercalcemia

Answer 10

Effects:
1. Shortens the QT interval
2. Atriocentricular Block
3. Digitalis Hypersensitivity
4. Cardiac Arrest

Question 11

Hypomagnesemia

Answer 11

Effects:
1. Torsades de Pointes