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Cardio > CAD > Flashcards

CAD Flashcards

1
Q

Myocardial oxygen demand is a function of:

A

HR

SBP

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1
Q

Read this:

A

normal

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1
Q

Read this:

A

v-fib

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2
Q

What is a good EF? Bad EF?

A

good = >50%

bad = <50%

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3
Q

Read this:

A

v-fib

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5
Q

How is EF calculated?

A

Stroke volume divided by EDV in LV

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6
Q

Afterload is directly affected by

A

ventricular dilation

SBP in LV

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6
Q

What type of CAD: rush this mayne to the cath lab

A

STEMI

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6
Q

What percentage of blockage is considered problematic?

A

70%

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7
Q

3 factors affecting SV?

A

preload

afterload

contractility

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8
Q

If a patient had a RV infart, what is a symptom you’d expect to (specific for RV)?

A

JVD

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9
Q

How is acute coronary syndrome different from STEMI?

A

ACS: incomplete occlusion and no EKG changes

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11
Q

How do platelets affect plaque rupture?

A

TXA2 causes vasoconstriction

ADP recruits more platelets

they can reactivate for several weeks

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12
Q

What 2 factors do dr’s manipulate to correct a bad, bad BP?

A

flow resistant (P=QR)

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13
Q

What type of CAD: dyspnea on exertion, pain on exertion (i.e. walking up the stairs carrying my 34lb backpack) relieved by rest

A

chronic stable angina

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14
Q

What type of CAD: EKG is unimpressive, patient is pale, diaphoretic, short of breath with substernal CP that woke him from sleep

A

ACS

15
Q

ST elevation on an EKG means…

A

vessel fully occluded

17
Q

In ACS, why does a patient with ~40% blockage suddenly have a serious obstruction?

A

transient vasospasm causes ~80% obstruction (the demand is constant but the oxygen supply is down)

18
Q

How does preload affect BP?

A

an increase in preload causes an increase in BP (because it increases SV)

19
Q

Read this:

A

STEMI

21
Q

Coronary oxygen supply is a function of

A

coronary blood flow

22
Q

How do you know it’s heart pain (not just chest wall pain, etc)?

A

>5 min but <30

23
Q

What causes angina pain?

A

the plaque is growing!

24
Q

What causes an increased oxygen demand?

A

increased BP

increased HR

25
Q

Inadequate oxygen supply is due to:

A

blockage

vasoconstriction

26
Q

MI complications include:

A

myocardial rupture (can occur a few different places)

LV aneurysm

pericarditis

venous thrombosis

27
Q

Read this:

A

STEMI

Cardio (26 decks)

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