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PLE reviewer > Physio > Flashcards

Physio Flashcards

1
Q

Cardiac Output

5L/min at rest
Max: 20L/min
Athlete: 30L/min

A

CO = SV x HR

CO = MAP - RAP
———–
TPR

BP = CO x TPR

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2
Q

Poiseullie

Blood Flow

A

Q = P1 - P2
———
R

⬆️ P1 ⬇️ P2
⬆️ resistance (vasoconstrict)

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3
Q

Resistance
= inverse to Blood Flow

⬆️P1 ⬇️P2
⬆️Pressure difference

A

R = Viscosity x Length
————
radius (to the 4th power)
vasoconstrict/vasodilate

50% narrowing = 1/16 change in BF

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4
Q

Blood Flow Velocity

A

A Cross sectional area

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5
Q

High Reynolds number > 2000

A 
                 Viscosity

Turbulent Blood Flow
> Anemia (⬇️viscosity)
> Atherosclerotic BV (⬆️velocity)

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6
Q

Afterload

A

Overcoming TPR
SVR
ARTERIOLES

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7
Q

Pulse Pressure

A

Arterial Compliance

SBP-DBP

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8
Q

MAP

A

2/3DBP + 1/3SBP

Diastole + 1/3PP

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9
Q

Capacitance
(compliance)

C ⬇️ with age,
= ⬆️ PP (sv/c)

A

C = Volume
———
Pressure

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PLE reviewer (3 decks)

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