Hemodynamics/Labs

Question 1

Cardiac Output

Answer 1

SV x HR

4 - 8 L/min

Question 2

Cardiac Index

Answer 2

CO relative to body surface area

2.4 - 4 L/min

Question 3

Central Venous Pressure

Answer 3

Indicator of fluid volume status
measured in right atrium
2 - 8 cm/H2O

Question 4

Pulmonary Artery Pressure

Answer 4

20 - 30 / 10 - 20 mmHg

Question 5

Systemic Vascular Resistance

Answer 5

Measure of how much force the left ventricle has to overcome to pump blood (low=vasodilated)

800-1200 dynes

Question 6

CK-MB

Answer 6

is the most specific marker for an MI but levels don’t peak until 24 hours after the onset of pain

5-25 iu-l

Question 7

Troponin T

Answer 7

<0.10 ng/mL

Question 8

Troponin I

Answer 8

<0.03 ng/mL

Question 9

aPTT

Answer 9

used for Heparin
normal: 25-35
on heparin: 1.5-2.5x normal

Question 10

PT

Answer 10

10-13 sec

Question 11

INR

Answer 11

used for Warfarin
normal: < 2
on warfarin: 2-3

Question 12

Serum Digoxin level

Answer 12

0.5 - 2 ng/mL

Question 13

BUN

Answer 13

7-18 mg/dL

Question 14

Creatinine

Answer 14

0.6 - 1.2 mg/dL

Question 15

Ejection Fraction

Answer 15

Percent of blood volume ejected from the heart during systole

normal: 50-70%

40-50% could indicate HF