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Chemistry > Cardiac Markers > Flashcards

Cardiac Markers Flashcards

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1
Q

What layer of the heart contain the muscle fibers in cardiac markers it also regulates contraction and relaxation of the heart

A

Myocardium

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2
Q

What proteins are responsible for heart retraction

A

Tropinin & trypomyosin

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3
Q

What proteins are responsible for heart contractions

A

Myosin & actin

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4
Q

What part of the cardiac conduction system is located in the wall of the right atrium

A

Sinuatrial node

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5
Q

What part of the cardiac conduction system is located in the bottom right atrium

A

Atrioventricular Node

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6
Q

What is secreted to decrease nodal activity in for the heart rate

A

Acetylcholine

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7
Q

Describe the relationship between nodal activity and heart rate

A

Dec nodal activity = inc heart rate
Inc nodal activity = dec heart rate

INVERSE

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8
Q

Do you have one example for sudden lots of blood resulting in death of heart muscle

A

Blood clot blocking coronary artery

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9
Q

What heart state is a result of electrical instability? This often occurs as a result of heart muscle

A

Ventricular fibrillation

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10
Q

A heart in ventricular fibrillation can result in permanent brain damage and death can occur unless oxygenated blood is restored within how much time

A

Five minutes

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11
Q

True or false clinical symptoms and EKG can diagnose Miocardial Infarction

A

False

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12
Q

List some MI confirmation test

A

Myoglobin troponin CKMB ALT AST CK

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13
Q

What test are included in a cardiac markers panel

A

Myoglobin CKMB & tropinin-I

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14
Q

How soon after MI can myoglobin be detected

A

One hour post

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15
Q

How long after MI does myoglobin remain elevated

A

12 to 24 hours

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16
Q

What cardiac marker is the most specific for am I? Why?

A

Troponin I because it’s a muscle protein that is released during MI

17
Q

How long after MI does CKMB be detected?

A

2-4 days

18
Q

How soon after MI can CKMB be detected

A

2 hours post

19
Q

How soon after M I can troponin I be detected

A

Three hours post

20
Q

How long after MI does troponin I remain elevated?

A

4-10 days

21
Q

What is the principal for troponin testing?

A

Monoclonal antibody test (EIA)

22
Q

List the risk factors

A

Diabetes smoking high blood pressure plaque accumulation hereditary

23
Q

List the preventative measures for MI

A

Exercise don’t smoke know your risk

24
Q

What are the cardiac enzymes?

A

Lactate dehydrogenase LD
Aspartate Aminotransferase AST
Creatine Kinase CK

Chemistry (8 decks)

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