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MOD 1 Quiz 2 > Stanley's EKG > Flashcards

Stanley's EKG Flashcards

1
Q

HEART?

A 
Hypertrophy
Extent of intervals
Axis
QRS- ST Analysis
No T wave inversion

All signs of normal EKG

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2
Q

Hypertrophy?

A

LVH if S+T>=35 mm
S=tallest S wave of V1, V2, V3
R= tallest R wave of V4, V5, V6 and/or

Rwave >= 12 mm Lead aVL only if age >=35 yrs

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3
Q

Extent of intervals?

A

PR= .12-.20 sec

QRS < 1/2 of RR

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4
Q

Axis is normal if?

A

Leads I and aVF positive
consider LAFB if axis < -45 degrees
Left axis: Lead I positive, and Lead aVF negative

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5
Q

QRS- ST analysis, normal if?

A

No significant Q-waves
No ST segment changes
Transition zone occurs between (V2, V3, V4) inclusive
R wave propagation

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6
Q

Depolarization of the heart?

A

SA node
AV node
Bundle of HIS
Left/Right Bundles (within interventricular septum)

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7
Q

Contains automaticity?

A 
SA node
internodal pathways
AV Junction tissue 
Bundle of HIS
Left and Right Bundle
Purkinje fiber
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8
Q

Refractory period?

A

time after depolarization- repolarization where cell cannot undergo depolarization

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9
Q

P wave?

A

depolarization of the right and left atrium

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10
Q

Depolarization of SA and AV node?

A

very small voltage, not show on ECG machine

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11
Q

QRS wave?

A

depolarization of the septum, right, left ventricles

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12
Q

Repolarization of the atria?

A

not see on ECG since it is lost in QRS complex

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13
Q

T wave?

A

repolarization of ventricles

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14
Q

Why does the AV node slow?

A

prevent rapid fire signal from the SA node, prevent life threatening tachycardia

if rapid signals occur, met with refractory period of AV node

Problems- Wolff-Parkinson-White WPW, or Preexcitation Syndrome

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15
Q

12 leads on a standard 12 lead and their electrical orientation?

A 
Lead I
Lead II
Lead III
Lead aVL
Lead aVF
Lead aVR
Lead V1
Lead V2
Lead V3
Lead V4
Lead V5
Lead V6
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16
Q

Lateral leads?

A

V6, V5, V4

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17
Q

High lateral leads?

A

Lead I, aVL

18
Q

Septal leads?

A

V1, V2

19
Q

Anterior leads?

A

V2, V3, V4

20
Q

Inferior leads?

A

Lead II, Lead III, aVF

21
Q

Normal PR interval?

A

.12<=.20 sec

22
Q

Normal QRS?

A

<= .10 sec

23
Q

Normal QT?

A

<= 1/2 RR

24
Q

Prolonged QT interval?

A

greater than 1/2 the RR interval

at heart rate btw 60-100

25
Q

Limbs in the frontal plane?

A

Limb leads/ bipolar leads

26
Q

Depolarization toward a positive electrode?

A

cause an upward deflection

27
Q

Depolarization away form a positive electrode?

A

cause a downward deflection

28
Q

Leads for the right ventricle or Posterior ventricle?

A

none

29
Q

Lead that contains least useful information and discarded?

A

aVR

30
Q

Which is stronger depolarization of right or left ventricle?

A

Left

31
Q

R wave progression?

A

is normal in a normal ECG
smallest in lead V1 and largest in V6
V1 S>R
V6 R>S

32
Q

Period where the R wave is equal in voltage to the S wave?

A

This is known as the transition zone, R=S

33
Q

If Vtrans occurs before V2?

A

early transition, in V2 R>S

34
Q

If transition zone occurs after V4?

A

late transition

35
Q

What can an early transition mean?

A

Posterior MI, normal variant

36
Q

What can a later transition mean?

A

COPD, MI, R/LBBB, normal variant

37
Q

Criteria for left ventricular hypertrophy?

A

Age (>=35 yo)
R+S>=35 mm
R wave on aVL >=12 mm

38
Q

Criteria for LBBB?

A

QRS >= .12 sec
RSR’ in leads V6, V5, or V4 (slur/notch)
Lead I is all upright (slur or notch)

39
Q

Criteria for RBBB?

A

QRS duration >= .12 sec
RSR’ in Leads V1, V2, or V3 (slur or notch)
Lead I is biphasic with broad terminal S wave

40
Q

Criteria for IVCD? (Interventricular conduction delay)

A

inverted t wave (concordance with negative portion of QRS (primary))
Some

MOD 1 Quiz 2 (9 decks)

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