The Heart and the Circulation Flashcards
MAP-CVP =
- CVP is 0 unless stated otherwise (all cases)
CO (Cardiac O)*(TPR) peripheral resistance.
*pressure is getting smaller as blood flows
T/F Cardiac output is the same on both sides
T
Changes in:
Diastolic Fiber Length
Diastolic Volume
Diastolic Pressure
Atrial Pressure
Changes Stroke Volume
SV is determined by
Preload,
Afterload,
Inotropic State
MAP-CVP =
CO (Cardiac O)*
TPR
1) = V
2) = I
3) = R
Peripheral Venous
Central
Venules / Veins
Vena Cava/ Atrium
P»_space; C –> presures
T/F Flow (Q) = Cardiac Output (CO)
T
Venous Return
Blood flowing back to heart
Increase CVP means
Increased filling of right ventricle..
Increased filling of left ventricle..
increased Preload & SV –> CO
Steady State
Mean Circulation time
Mean Circulartory Pressure
CO = VR (Venus Return)
MCT - Circulation time
When you die and heart stops
1) Flow continues
2) Veins gain, Arterial lose blood
3) Pressure gradient collapse
4) Flow stops when equal right?
WRONG, veins 19x more compliant.
MAP-CVP =CO (Cardiac O)*(TPR) peripheral resistance
When you die CVP = 7 explain
MAP?
CO = 0
so MAP - CVP = 0
MAP = 0
What happens to MAP/CVP as you restart a dead heart?
from 7mmhg CVP – Drops
from 7mmhg MAP - Rises
- to pressure at the heart
Resistance of the system is _____
constant with not physical changes.
you can use this to solve problems
Steady state is reached when what equation is Satisfied?
CVP vs. CO relationship* Graph with line (w/ no reflexes)
MAP-CVP = CO (Cardiac O)*(TPR) peripheral resistance
Vascular function curve. You can use a non 0 point to determine variables
