EKG Flashcards

1
Q

what heart rate is considered tachycardia?

A

100 BPM

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2
Q

what heart rate is considered bradycardia

A

< 60 bpm

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3
Q

what is the intervals between each dark line on an ECG

A

.2 seconds

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4
Q

what is the interval between each of the tiny boxes on an ECG

A

.04 seconds

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5
Q

What are the BPM intervals between .2 second lines on an ECG

A

300

150

100

75

60

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6
Q

What are the corresponding lead angles for lead I

A

0, 180

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7
Q

What are the corresponding lead angles for lead II

A

+60, -120

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8
Q

What are the corresponding lead angles for lead III

A

+120, -60

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9
Q

what are the lead angles for lead AVL

A

-30, +150

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10
Q

What are the lead angles for lead AVF

A

-90, +90

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11
Q

What are the lead angles for lead AVR

A

-150, +30

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12
Q

What should the basis of treatment be for sinus tachycardia?

A

Look for cause and treat that!

Caffiene, stress, anxiety, Dr. hillard

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13
Q

What features of the sinus node makes it the dominant cardiac pacemaker?

A

Highest intrinsic discharge rate

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14
Q

You have a young athetic person who likes BDSM. They are a sub and wear a really tight collar. What physiologic heart rhythm are they most likely to have

A

bradycardia

caused by anything that massages carotid, obstructive jaundice, sliding hiatial hernia, valsalva maneuver

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15
Q

What prevelent drugs can cause bradycardia?

A

Digitalis

drugs that inhibit sympathetic tone

Beta blockers

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16
Q

If bradycarida becomes severe enough needing treatment, what is the first line treatment

A

Atropine .3 -> .5 | 1 mg -> 2mg IV

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17
Q

What three types of premature contraction can a person experience

A

Premature Atrial Contraction

Premature Junctional Beat

Premature Ventricular Contraction

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18
Q

What type of arythmia is seen in people without significant heart disease but can be associated with stress, alchohol, tobacco, coffee, COPD, and CAD?

A

Premature Atrial Contraction

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19
Q

What is the key ECG feautre of Premature Atrial Contaction

A

a second P wave before the QRS

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20
Q

What are the 2 types of PAC you can see on ECG

A

Normally conducted

Blocked PAC

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21
Q

What is the treatment of symptomatic PAC

A

reverse causes

Beta Blockers - metoprolol

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22
Q

What is paroxysmal atrial tachycardia

A

Suddent HR above 100 (150-200)

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23
Q

What are the key ECG findings of PAT with AV block

A

Rapid rate, spiked P’ waves

2:1 ratio of P’:QRS

Cause: digitalis toxicity

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24
Q

What are the key findings on ECG for Multifocal Atrial Tachycardia

A
  • 3 or mor different P waves
  • P-R interval variable
  • Associated with lung disease (Right sided deviation)
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25
Q

What is the treatment for multifocal atrial tachycardia?

A
  • Calcium channel blocker
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26
Q

Describe ECG of Atrial Flutter and the best leads to check

A

Saw tooth appearance

Leads II, III, AVF, V

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27
Q

Describe the ECG of paroxysmal junctional (nodal) rhythms

A
  • 150 - 200 BPM tachy
  • Pwave lost or inverted before or after each QRS
28
Q

What are the characteristics of an ECG with Preventricular Contractions?

A
  • Premature, bizarre, wide QRS
  • No preceding P wave
  • ST-T wave moves opposite direction of QRS
  • Full compensatory pause
29
Q

What is it called when some one throws more than 6 preventricular contractions?

A

V-Tach (ventricular tachycardia)

30
Q

What situation in a PVC can predispose someone to vtach?

A

if th PVC lands on a T wave

31
Q

Someone just has an ischemic attack on their ol ticker. However, they got to the hospital and got that good clotbuster and his heart is being reperfused. what arrythmia must we be concerned about?

A

Accelerated idioventricular rhythm

(i think this is still V-Tach)

32
Q

What is hallmark of a Torsades de Pointes

A

QRS swings from positive to negative direction

inherited: prolonged QT
aquired: Class I II antiarrhythmetics, Alcohol, TCA

33
Q

What is the treatment for torsades de pointes

A

MgSO4, 1-2 g IV bolus

Override pacing

Isoproternol

34
Q

What is VFib

A

Disorganized contractility. This is what Coding is.

NOT ASYSTOLE

35
Q

What is an AV block?

A

a block in the cardiac conduction system that causes a disruption of atrial to ventricular conduction

36
Q

What is hallmarck of a first degree AV block?

A

PR interval >.2 seconds (normal .12 - .2 sec)

37
Q

What disease processes can precipatate 1 degree AV block

A

Athersclerosis

HTN

Dibeetus

Fibrosis - Ischemia

38
Q

What are the 2 types of second degree A-V block

A

Mobitz I (Wencke Bach)

Mobitz II

39
Q

What is hallmark of Mobitz I type 2 degree AV block?

A

Progressive PR-interval prologation prior to droped QRS

Grouped beats

can be seen in INFERIOR MI

40
Q

What causes Mobitz type II AV block

A

Ischemic heart disease, ANTERIOR MI

41
Q

Describe Mobitz II 2 AV block

A

uniform PR interval

Dropped QRS

42
Q

Describe a third degree (complete) heartblock

A

P waves dont relate to QRS

if occurs above AV node - narrow QRS (40-55)

If occurs below AV node - wide QRS (20-40)

43
Q

What are the common features of BBB

A
  • Wide QRS Complex (.12 sec or greater)
  • ST segments - T wave slope opposite QRS
44
Q

What is characteristic of a right bundle branch block?

A

QRS segment with R’ present in V1 and V2

45
Q

What is characteristic of Left bundle branch block?

A

R’ locsted in leads I, AVL, V5, V6

46
Q

What disease process is associated with LBBB

A

HTN

Ischemia

Aortic Stenosis

Cardiomyopathy

47
Q

What is a hemiblock or fascicular block?

A

Block of a division of a bundle branch

Left - anterior(more common)/posterior

48
Q

What are the characteristics of a LAH

A

Left axis deviation

small Q in I;AVL

Small R in II, III, AVF

49
Q

What is the criteria of LPH

A
  • Right axis deviation
  • Small R leads I and AVL
  • Small Q in II, III, AVF

S1Q3

50
Q

what changes occur in Right Atrial Enlargement?

A

looks like a ski slope in II and VI

51
Q

What disease processes are associated with RAE

A

Pulmonary diseases - PH. COPD, Mitral stenosis, Mitral regurgitation

52
Q

Describe the characteristics of a Left Atrial Enlargement

A

P mitral M shaped wave or has P wave with immediate inversion.

53
Q

As a consequence of increasing force needed to eject blood from enlarged ventricles, what changes do you expect to be observed in Left Ventricular Hypertrophy

A

-QRS complex increases

– deeper S waves over RV

– Taller R waves over LV

54
Q

What are the Romhilt-Estes Scoring System Criteria

A

R or S in limb lead 20 MM or more

S in V1 V2 V3 25 mm or more

R in V5 V6 30 mm or more

and ST shift

55
Q

What are the Sokolow Lyon Criteria

A

R in I + S in III > 25 mm

R in AVL > 11

R in V6 > 26 mm

56
Q

What are the clues suggesting RVH

A

RAD 90 degrees or more

R in V1 7 mm or more

R in V1 + S in V6 10 MM or more

R/S ratio V1 >1

S/R ratio in V6 > 1

57
Q

What effect will low potassium have on ECG

A

Smaller QRS

58
Q

What effect will high potassium have on ECG

A

wider QRS

59
Q

What does low calcium do to ECG

A

prolong QT interval

60
Q

What is the hallmark finding of hyperkalemia on ECG

A

peaked T wave, wide QRS, increased PR interval

61
Q

What is the hall mark of hypothermia

A

Bradycardia and J wave (osborne wave)

62
Q

What are the ECG findings associated with PE

A

S1 Q3 T3

T wave inversion in V1-4

Transient RBBB

63
Q

What are the ECG findings associated with Wolff-Parkinson -White syndrome

A

Short P-R interval

Slurred upstroked - (delta wave)

64
Q

In which populations is Brugada’s disease most prominent

A

Asian Men

Sloped ST segments V1-3

65
Q

What do dual pace maker EKG look like?

A

Twin Towers in lead III