Hemodynamic Vocab

Question 1

What is cardiac output?

Answer 1

The volume of blood ejected by the heart in one minute into the systemic circuit.

Question 2

What is cardiac index?

Answer 2

The cardiac output divided by an individuals body mass.

Question 3

What is stroke volume?

Answer 3

The volume of blood ejected by the left ventricle during each systole.

Question 4

What is preload?

Answer 4

The mount of stretch placed on the cardiac muscle fibers just before systole.

Question 5

What is afterload?

Answer 5

The pressure that the ventricle has to pump against to eject blood into the circulation during systole.

Question 6

What is contractility?

Answer 6

The inotropic action of the heart muscle during systole or the force of each ventricular contraction.

Question 7

What are the three parts of the Autonomic Nervous System?

Answer 7

1. Inotropic.
2. Chronotropic.
3. Dromotropic.

Question 8

What is inotropic?

Answer 8

Myocardial conductivity.

Question 9

What is chromotropic?

Answer 9

Heart rate.

Question 10

What is dromotropic?

Answer 10

The rate of electrical conduction.

Question 11

What are the three parts of the sympathetic nervous system?

Answer 11

1. Alpha 1
2. Beta 1.
3. Beta 2.

Question 12

What is the sympathetic nervous system consisted of?

Answer 12

Norephinephrine and epinephrine.

Question 13

Where are alpha 1 receptors located?

Answer 13

Primarily in the vascular smooth muscle.

Question 14

Where are the beta 1 receptors located?

Answer 14

Primarily in the heart.

Question 15

Where are the beta 2 receptors located?

Answer 15

In the bronchial and vascular smooth muscle.

Question 16

What does the parasympathetic system do?

Answer 16

Produce a negative dromotropic and chromotropic effect on the heart.

Question 17

What is phlebostatic axis?

Answer 17

The reference level for placement of the transducer to ensure accuracy of measurements?

Question 18

What two things make up arterial pressure monitoring?

Answer 18

1. Systolic.
2. Diastolic.

Question 19

What does systolic mean?

Answer 19

Represents ejection phase of the left ventricular systole.

Question 20

What does diastolic mean?

Answer 20

Measured at end-diastole just prior to the next systolic upstroke.

Question 21

What is mean arterial pressure?

Answer 21

Represents average pressure through the cardiac cycle; perfusion pressure.

Question 22

What is central venous pressure monitoring?

Answer 22

CVP measures the pressure in the right atrium or vena cava.

Question 23

What is pulmonary artery pressure monitoring?

Answer 23

Used to obtain intra cardiac data to diagnose/evaluate heart disease, shock states, and any medical or surgical condition that compromises cardiac function and output.