Cardio > Electrocardiogram > Flashcards

Electrocardiogram Flashcards

(25 cards)

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1
Q

Electrocardiogram

A

graphic representation of the heart’s electrical activity that is used to assess rhythm, find location/extent of insult, and evaluate change with activity

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2
Q

Arterial depolarization

A

SA node

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3
Q

Ventricular depolarization

A

AV node

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4
Q

P wave

A

atrial depolarization

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5
Q

PR interval

A

time of atrial depolarization and conductance from SA to AV node

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6
Q

PR interval normal time

A

0.12 - 0.20 sec; more than 0.20 seconds indicates a first degree heart block

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7
Q

PR segment

A

AV node delay, around 0.08-0.12 seconds

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8
Q

QRS complex

A

ventricular depolarization and atrial repolarization (hidden d/t ventricle activity)

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9
Q

QRS complex normal time

A

0.04-0.10 seconds

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10
Q

QT interval

A

time for ventricular depolarization and repolarization

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11
Q

QT Interval normal time

A

0.32-0.40 sec

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12
Q

ST segment

A

time ventricles are depolarized (isoelectric period)

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13
Q

T wave

A

ventricular repolarization

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14
Q

Normal or abnormal during exercise

P wave increases in height

A

normal

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15
Q

Normal or abnormal during exercise

R wave decreases in height

A

Normal

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16
Q

Normal or abnormal during exercise

J point becomes depressed

17
Q

Normal or abnormal during exercise

ST segment becomes sharply up sloping

18
Q

Normal or abnormal during exercise

Q-T interval shortens

19
Q

Normal or abnormal during exercise

T wave decreases in height

20
Q

Normal or abnormal during exercise

Excessive ST-segment depression (>2mm)

21
Q

Normal or abnormal during exercise

ST elevation (>1mm) in leads without diagnostic Q waves

22
Q

Normal or abnormal during exercise

Increase PR interval

23
Q

Normal or abnormal during exercise

Missing Q wave

24
Q

Normal or abnormal during exercise

Missing P wave

26
Normal or abnormal during exercise Increased/decreased wave time
Abnormal
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