Hemodynamic Vocab Flashcards
What is cardiac output?
The volume of blood ejected by the heart in one minute into the systemic circuit.
What is cardiac index?
The cardiac output divided by an individuals body mass.
What is stroke volume?
The volume of blood ejected by the left ventricle during each systole.
What is preload?
The mount of stretch placed on the cardiac muscle fibers just before systole.
What is afterload?
The pressure that the ventricle has to pump against to eject blood into the circulation during systole.
What is contractility?
The inotropic action of the heart muscle during systole or the force of each ventricular contraction.
What are the three parts of the Autonomic Nervous System?
- Inotropic.
- Chronotropic.
- Dromotropic.
What is inotropic?
Myocardial conductivity.
What is chromotropic?
Heart rate.
What is dromotropic?
The rate of electrical conduction.
What are the three parts of the sympathetic nervous system?
- Alpha 1
- Beta 1.
- Beta 2.
What is the sympathetic nervous system consisted of?
Norephinephrine and epinephrine.
Where are alpha 1 receptors located?
Primarily in the vascular smooth muscle.
Where are the beta 1 receptors located?
Primarily in the heart.
Where are the beta 2 receptors located?
In the bronchial and vascular smooth muscle.
What does the parasympathetic system do?
Produce a negative dromotropic and chromotropic effect on the heart.
What is phlebostatic axis?
The reference level for placement of the transducer to ensure accuracy of measurements?
What two things make up arterial pressure monitoring?
- Systolic.
- Diastolic.
What does systolic mean?
Represents ejection phase of the left ventricular systole.
What does diastolic mean?
Measured at end-diastole just prior to the next systolic upstroke.
What is mean arterial pressure?
Represents average pressure through the cardiac cycle; perfusion pressure.
What is central venous pressure monitoring?
CVP measures the pressure in the right atrium or vena cava.
What is pulmonary artery pressure monitoring?
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.
