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Psurg > Contractility > Flashcards

Contractility Flashcards

1
Q

Stroke Volume is

A

the volume ejected by each heart beat; CO / HR

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2
Q

Contractility is

A

the force with which the heart propels the stroke volume forward

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3
Q

Contractility variables

A

Starling’s law the greater the stretch = the greater the contraction; catecholamines; Inotropes agents that change muscular contractions; stroke volume; electrical activity that initiate HR; myocardial wall movement (damaged by MI can’t move); physiologic demand (exercise)

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4
Q

Positive Inotropes

A

catecholamine; Ca+; dopamine; digoxin; glucagon insulin

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5
Q

Negative Inotropes

A

Beta blockers

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Psurg (15 decks)

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