Class 10 Flashcards
What is the study of fluid mechanics of blood with respect to pressure and flow?
Hemodynamics
The heart generates pressure to maintain what?
A gradient
What is vasculature?
Transport network for distribution
What is the transport medium of the body?
Blood
What maintains the pressure gradient in the cardio system?
Autonomic nervous system
What systems regulate volume for the cardio system?
Renal and hormonal systems
What are the 4 steps of adding a catheter?
1) catheter inserted into RA chamber
2) catheter advanced into RV chamber
3) catheter advanced to PA
4) catheter advanced into smaller PA, occluding artery by inflating balloon
Where is a catheter inserted?
RA chamber
Direction of catheter travels:
RA chamber - RV chamber - PA - smaller PA
Which part of the heart can create a vaccuum?
Aorta
Right atrial pressure is related to what other pressure?
Central venous pressure
What are the 3 waves of right atrial pressure?
a, c, and v
What is the a wave rising phase?
A result of atrial systole after rapid ventricular filling phase
What is the falling phase of the a wave?
Represents the end of active ventricular filling (atrial relaxation)
What is the end of the a wave?
Beginning of right ventricular contraction
What is the c wave?
Closure of tricuspid valve with continued atrial filling
What is the rising v wave?
Indicates continuation of atrial filling while right atrium is fully relaxed
What is the falling v wave?
Indicates tricuspid valve is opened
What is pulmonary wedge pressure?
Left atrial pressure
What is pulmonary wedge used for?
Estimating left atrial pressure which is difficult to measure alone, can find pulmonary edema
How can you measure pulmonary wedge pressure?
Swan-Ganz catheter
What are the 6 factors that affect blood flow?
1) Velocity
2) Pressure
3) Viscosity
4) resistance
5) Flow rate
6) Hematocrit
At a steady state, CO should equal what?
Venous return
Flow rate is directly proportional to what?
Velocity, pressure gradient
