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7110 > Cardiac > Flashcards

Cardiac Flashcards

1
Q

1st degree HB: AV node conduction

A

Prolonged but intact

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2
Q

ECG for 1st degree HB

A

Prolonged PR consistently, otherwise regular

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3
Q

What HB can be treated with atropine

A

First, Second type 1, block must be above bundle of his

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4
Q

2nd degree HB

A

One or more but not all sinus impulses blocked

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5
Q

2nd degree HB type I (site of dispruption

A

AV node

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6
Q

PR interval: 2nd degree HB type 1

A

lengthens until lost in QRS or blocked impulse

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7
Q

Type II 2nd degree HB site of disruption

A

AV node or lower

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8
Q

PR interval in type II 2nd degree HB

A

constant except when blocked. Some P waves with no QRS

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9
Q

2:1 2nd degree HB

A

2 p waves for every QRS

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10
Q

Third degree HB

A

Complete block with no conduction

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11
Q

Rhythm in 3rd degree HB

A

Junctional or Ventricular escape rhythm

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12
Q

P wave and QRS in 3rd degree HB

A

have no relationship, independent of each other, at rates of pacing cells

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13
Q

Tx for 3rd degree HB

A

Pacing, Dopamine, E

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14
Q

S/S bradycardia (5)

A 
hypotension
Alt Mental status
Shock
Ischemic chest pain
Acute HF
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15
Q

Tx for bradycardia

A

Pacing, atropine

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16
Q

Bradycardia on CO

A

Decreased HR = Decreased CO = decreased perfusion

17
Q

Tachycardia on CO

A

inc O2 demands increase HR

18
Q

Equation for CO

A

HRxSV

19
Q

SV

A

amount of blood ejected with each contraction

20
Q

what is HR determined by

A

ANS/PNS/SNS

21
Q

what HR decreases CO

A

> 200

22
Q

3 components of SV

A

Preload
Afterload
Contractility

23
Q

Preload

A

Blood volume returning to heart

24
Q

more preload = ___ SV

A

more

25
Q

what affects preload

A

venous return

26
Q

Afterload

A

Opposition of blood leaving heart

27
Q

more afterload = ___ SV

A

less

28
Q

What does angiotension do

A

Vasoconstriction

29
Q

purpose of angiotension inhibitor

A

decrease BP through vasodilation, reduce Na/water retention

30
Q

effect of calcium on heart muscle

A

decreases contractility

31
Q

purpose of Ca channel blockers

A

slow conduction to increase contractility

32
Q

How do vasodilators decrease CO

A

decrease cardiac workload so decreased HR/CO

33
Q

How do diuretics work

A

block Na absorption

34
Q

Rhythms to cardiovert

A 
Atrial tachycardia
SVT
Aflutter
Afib
VTach with pulse
35
Q

Rhythms for Defib

A

Vtach no pulse

Vfib

36
Q

Rhythms that need pacing

A 
Sinus arrest
Junctional escape
Ventricular escape
AV block
Asystole

7110 (5 decks)

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