Hemodynamics Flashcards
Preload
the pressure at a given space during diastole
Contractility
the force of contraction used to propel blood forward
Cardiac output
the volume of blood ejected from the heart per minute
4-8 L/min
Cardiac index
cardiac output based on a person’s weight and height
2.5-4.2 L/min
Afterload
the pressure that fluid must overcome
SVR
the arterial blood pressure
based off the diameter of the lumen
770-1500
What are noninvasive ways to measure hemodynamics?
Blood pressure
JVD
What is a normal JVD reading?
7-9mm
What is JVD associated with?
preload
What are invasive ways of measuring hemodynamics?
arterial pressure monitoring
central venous pressure/right atrial pressure
pulmonary artery catheterization
What supplies do you need for invasive monitoring?
invasive catheter noncompliant tubing transducer with stopcocks flush system bedside monitoring
Where is the level of the phlebostatic axis?
the 4th intercostal space
What are the sites of insertion for the arterial pressure monitoring?
radial artery
brachial artery
femoral artery
What do you check before using the radial artery for the site of insertion?
collateral blood flow through the ulnar artery to the hand
When measuring CVP/RAP what do you need to do to acquire an accurate reading?
stop the infusion going through the tubing
