Cardiovascular Flashcards by Desiree Dawn Velasco

Q

P wave

A

Atrial depolarization

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Q

QRS complex

A

Ventricular depolarization

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Q

T wave

A

Ventricular repolarization

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Q

QT interval

A

Period of ventricular depolarization + repolarization

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Q

PR segment

A

AV node conduction

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Q

ST segment

A

Isoelectric

Correlates with plateau of ventricular AP

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Q

U waves

A

Hypokalemia

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Q

Tall t waves

A

Hyperkalemia

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Q

Prolonged QT interval

A

Hypocalcemia

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Q

Shortened QT interval

A

Hypercalcemia

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Q

Stable resting membrane potential

A

-90 mV

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Q

Produces changes in contractility

A

Inotropic effect

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Q

Produces changes in rate of relaxation

A

Luistrophic effect

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Q

Produces changes in rate of relaxation

A

Chronotropic effect

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Q

Produces changes in heart rate

A

Chronotropic effect

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Q

Produces changes in conduction velocity

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A

Dromotrophic effect

Q

Inotropes affect

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A

Stroke volume

Q

Chronotropes affect

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A

SA node

Q

Dromotroped affect

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A

AV node

Q

Dromotropes affected by

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A

Inward calcium current

Q

Beta-1 stimulation of the heart would cause

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A

Stronger, briefer & more frequent contractions

Q

S1

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A

AV valves close

Q

S2

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A

SL valves close