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Cardiovascular System > ECG > Flashcards

ECG Flashcards

1
Q

Normal amplitude of p wave

A

=<0.25 mV

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2
Q

Abnormal p wave may indicate?

A

Left or right hypertrophy
Atrial premature beat
Hyperkalemia

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3
Q

Normal duration of QRS

A

0.08s - 0.12s

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4
Q

Abnormal in QRS can indicate

A

Cardiac arrhythmia, ventricular hypertrophy, MI, electrolyte derangement

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5
Q

Q wave greater than 1/3 of height of R wave and greater 40ms indicates

A

MI

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6
Q

Wide QRS incites

A

Left or right bundle branch block, hyperkalemia

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7
Q

Tall T wave indicates

A

Hyperkalemia, left bundle branch block, MI

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8
Q

Flattened or inverted T

A

Ischemia, race, age hyperventilation, RBBB, LVH drug- digoxin, PE

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9
Q

PR duration

A

120-160 ms

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10
Q

PR represents

A

Atrial to ventricular conduction time through the bundle of His

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11
Q

Prolonged PR indicates?

A

1st degree heart block, trifasicular block (problems with right bundle branch and both fascicles of left bundle branch)

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12
Q

Short PR indicates

A

Wolf Parkinson White syndrome (heart beats abnormally fast)
Lown Ganong Levine syndrome (direct contact of atria to ventricle)

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13
Q

Normal QT duration

A

40 ms

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14
Q

Causes of long QT

A

MI, myocarditis, Romano ward syndrome

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15
Q

Duration of ST

A

80ms to 120 ms

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16
Q

Long ST

A

digoxin drug, LBBB, MI, ventricular hypertrophy, PE

17
Q

What is a flutter beat?

A

Heart rate is 200- 300 beats per minutes

18
Q

Define fibrillation

A

Uncoordinated contraction of myocardial cells resulting ineffective pumping

19
Q

Define electrical defibrillation

A

Resynchronzing heart by depolarizing all cells at the same time

20
Q

First degree nodal block?

A

Conduction time is more than 200 ms

21
Q

Second degree AV nodal block

A

When 1 of 2-4 AP passes from atria to ventricle resulting a p wave but no QRS.

22
Q

Third degree nodal block

A

No atrial AP passes to ventricles. Ventricles contraction is driven slowly by bundle of His or Purkinje fibers

Cardiovascular System (5 decks)

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