◄ Arcade
Venous Return
Pressure gradient · Flow · Guyton model
VR ∝
(
MSFP
−
CVP
)
Pressure Gradient → Flow
FLOW (L/min)
0
3
6
9
12
15
PRESSURE (mmHg)
0
2
4
6
8
CVP
MSFP
5.0
ΔP = 9
CVP · Right Atrium
3
mmHg
MSFP · Mean Systemic Filling
12
mmHg
ΔP · Driving Gradient
9
mmHg
Venous Return
5.0
L/min
Controls
●
CVP · Right Atrial Pressure
3
mmHg
-4
0
7
15
●
MSFP · Mean Systemic Filling
12
mmHg
0
7
14
20
Clinical Scenarios
Normal Physiology
Baseline gradient of ~9 mmHg drives normal venous return of ~5 L/min.
Guyton Venous Return Curve · VR vs Right Atrial Pressure
-8
-4
0
4
8
12
RIGHT ATRIAL PRESSURE (mmHg)
0
2
4
6
VR (L/min)
MSFP
COLLAPSE
PLATEAU
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