The Heart and the Circulation Flashcards

1
Q

MAP-CVP =

  • CVP is 0 unless stated otherwise (all cases)
A

CO (Cardiac O)*(TPR) peripheral resistance.

*pressure is getting smaller as blood flows

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2
Q

T/F Cardiac output is the same on both sides

A

T

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3
Q

Changes in:

Diastolic Fiber Length
Diastolic Volume
Diastolic Pressure
Atrial Pressure

A

Changes Stroke Volume

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4
Q

SV is determined by

A

Preload,
Afterload,
Inotropic State

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5
Q

MAP-CVP =
CO (Cardiac O)*
TPR

A

1) = V
2) = I
3) = R

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6
Q

Peripheral Venous

Central

A

Venules / Veins
Vena Cava/ Atrium

P&raquo_space; C –> presures

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7
Q

T/F Flow (Q) = Cardiac Output (CO)

A

T

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8
Q

Venous Return

A

Blood flowing back to heart

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9
Q

Increase CVP means

A

Increased filling of right ventricle..
Increased filling of left ventricle..
increased Preload & SV –> CO

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10
Q

Steady State
Mean Circulation time
Mean Circulartory Pressure

A

CO = VR (Venus Return)

MCT - Circulation time

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11
Q

When you die and heart stops

A

1) Flow continues
2) Veins gain, Arterial lose blood
3) Pressure gradient collapse
4) Flow stops when equal right?
WRONG, veins 19x more compliant.

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12
Q

MAP-CVP =CO (Cardiac O)*(TPR) peripheral resistance

When you die CVP = 7 explain
MAP?

A

CO = 0

so MAP - CVP = 0

MAP = 0

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13
Q

What happens to MAP/CVP as you restart a dead heart?

A

from 7mmhg CVP – Drops
from 7mmhg MAP - Rises

  • to pressure at the heart
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14
Q

Resistance of the system is _____

A

constant with not physical changes.

you can use this to solve problems

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15
Q

Steady state is reached when what equation is Satisfied?

CVP vs. CO relationship* Graph with line (w/ no reflexes)

A

MAP-CVP = CO (Cardiac O)*(TPR) peripheral resistance

Vascular function curve. You can use a non 0 point to determine variables

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16
Q

Clinical Correlation: Distended Jugualer?

A

CHF - C. heart Falure

17
Q

Clinical Correlation: When you stop heart? Hemorrhage and Transfusion, increases Resistance

CVP vs. CO relationship* Graph with line (w/ no reflexes)

A

CVP goes down.
H: Shift to left

CVP goes up.
L: Shift to right

CVP Same
L: Shift to left