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DSCE-EKG > EKG > Flashcards

EKG Flashcards

1
Q

pacemaker of heart

A

SA node

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2
Q

communicates with right and left atria

A

Baukmens Bundle

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3
Q

length of time for QRS complex is

A

less than 120 milisec

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4
Q

QRS >120 milisec

A

BBB

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5
Q

p wave >200 milisec

A

WPW

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6
Q

characterized by presence of delta wave

A

WPW

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7
Q

Lateral=
Inferior=
Septal=
Anterior

A

lateral=AVL, I, V5, V6
inferior=II, III, AVF
septal= V1, V2
anterior= V3, V4

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8
Q

automaticity definition

A

cells are able to depolarize spontaneously

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9
Q

rule of 300 only works for

A

regular rhythms

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10
Q

10 second rule works well for

A

irregular rhythms

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11
Q

incomplete pause

A

PAC

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12
Q

atrial activity poorly defined. ventricular response is irregularly irregular. no p wave, rate >100

A

A-fib

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13
Q

saw tooth appearance. atrial rate >300.

A

Aflutter

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14
Q

temporally slow down Aflutter

A

vagal maneuvers

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15
Q

lots of p waves of different shapes and sizes. irregularly irregular. found in severe COPD. 3 or more different appearing P waves. have to appear sick. >100 bpm

A

multifocal atrial tachycardia

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16
Q

premature atrial complexes. PR interval is short. narrow complexes. tachy

A

SVT

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17
Q

treat SVT

A

adenosine

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18
Q

connection between atria and ventrial. skip AV node. WPW syndrome

A

AV reentry tachy

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19
Q

treat AV reentry tachy

A

ablation

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20
Q

use dual pathway within AV node. QRS is narrow

A

AV nodal reentry tachy

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21
Q

treat AV nodal reentry tachy

A

adenosine. prevent with CCB

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22
Q

extopic atrial focus

A

atrial tachy

23
Q

treat atrial tachy

24
Q

significant Q wave

A

previous heart attack

25
Q

when width of Q wave is greater than .04 sec or amp >1/3 height R wave

A

significant Q wave

26
Q

compensatory pause. sinus node continues to discharge. initiates ventricular depol and makes the ventricle refractory to the supraventricular impulse

27
Q

If see wide wide QRS, what else do you want to know

A

clinical Hx to know if Vtach or SVT

28
Q

delay or total failure of impulse conduction through a part of the heart

29
Q

PR interval is longer than .200 sec. need p wave before each QRS

A

1st degree AV block

30
Q

PR interval gets longer until a nonconducted P wave occurs. the RR interval of the pause is less than the two preceding RR intervals, and the RR interval after the pause is greater than the RR interval before the pause. look for group beating. goes away with activity.

A

2nd degree AV Block(Mobitz type 1, Wenckebach)

31
Q

PR interval are constant until a nonconducted P wave occurs. there must be two consecutive constant PR intervals present

A

2nd degree AV block(Mobitz type 2)

32
Q

Mobitz type 2 requires this for treatment

33
Q

complete block of signals from atria to ventricles. no synchronization between P and QRS. HR 60s or 40s

A

3rd degree AV block

34
Q

3rd degree AV block requires this for treatment

35
Q

Key is R-R’ wave. 2 superimposed QRS complexes firing separately. QRS wider than .12 sec.

36
Q

what leads show RBBB

37
Q

what leads show LBBB

A

V5, V6. s wave in lead V1

38
Q

determining axis

A

look at AVF for positive(up) and negative(down)

look at lead I for positive(left), negative(right)

39
Q

look at lead V1 for biphasic p wave or p wave >1.5 mm

A

atrial hypertrophy

40
Q

amplitude of S wave in lead V1 and R wave V5 or 6 exceed 35mm

41
Q

tall R wave in RV leads, deep S waves in LV leads. increase in QRS duration

42
Q

ST depression means

A

subendocardial death or ischemia

43
Q

ST elevation means

A

full thickness death

44
Q

T wave inversion means

45
Q 
blood supply to heart
LAD=
left circumflex=
right coronary=
AV node=
A

LAD= anterior wall
left circumflex= posterior lateral
right coronary= right ventricle, inferior
AV node= gets supply from RCA

46
Q

Rule for ischemic changes

A

have to see it in 2 or more continuous leads. 1 mm of elevation in limb leads and 2 mm in precordial leads

47
Q

ST depression in V1-3

A

posterior wall AMI

48
Q

depression in V1-3 is posterior vall MI along with II, III, AVF elevation

A

Inferoposterior AMI

49
Q

upright QRS complex in lead I and negative QRS complex in AVF

50
Q

negative QRS complex in lead I and positive QRS complex in AVF

51
Q

used in permanent pacemakers. simulates normal physiology of atrial contraction followed by ventricular depolarization

A

dual chamber atrioventricular pacing

52
Q

diffuse ST segment elevation means

A

pericarditis

53
Q

prominent U wave. U wave is typically a slight bump after T wave

A

Hypokalemia

54
Q

cove ST segment elevation in V1-3. sudden cardiac death

A

Brugada syndrome

DSCE-EKG (1 decks)

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