Cardiac Flashcards

1
Q

What is an inotrope?

A

Changes the force of contractility

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2
Q

What is a chronotrope?

A

Changes the heart rate

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3
Q

What would you use to treat sepsis?

A

Inotropes

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4
Q

Is adrenaline/noradrenaline a Beta 1, alpha 1, beta 2 adrenoceptor agonist or antagonist?

A

Agonist

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5
Q

What effect does adrenaline/noradrenaline have on beta 1 adrenoceptors?

A

Increase heart rate

Increase contractility

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6
Q

What effect does an agonist have on alpha 1 adrenoceptors?

A

Vasoconstriction

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7
Q

What are the down sides to adrenaline/ noradrenaline as a treatment?

A

They aren’t selective

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8
Q

What is Dopamine?

A

A Beta 1 selective adrenoceptor agonist

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9
Q

What effect does dobutamine have? And when would you use it?

A

Increases heart rate and contractility

Acute heart failure, surgical shock, sepsis

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10
Q

What drug is common heart failure treatment?

A

Digoxin

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11
Q

Is Digoxin a inotrope or chronotrope?

A

Inotrope

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12
Q

How does Digoxin work?

A

Stops ATPase = increase Ca in cell = inotrope

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13
Q

What is angina?

A

Lack of oxygen to heart

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14
Q

What would you use in acute angina?

A

GTN

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15
Q

What is an issue with GTN?

A

Tolerance

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16
Q

What would you use as a prophylaxis for angina?

A
Beta blocker 
(propranolol non selective)
Atenolol beta 1 selective
17
Q

In what condition should beta blockers not be used?

A

Asthma

18
Q

What are examples of calcium channel entry blockers for angina?

A

Amlodipine, diltiazem, verapamil

19
Q

Where are Beta 1 adrenoceptors?

A

Heart

Kidney

20
Q

Where are Beta 2 adrenoceptors?

A

Lung
Skeletal muscle
GI tract

21
Q

Where are Beta 3 adrenoceptors?

A

Bladder