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Cardiovascular > ECG > Flashcards

ECG Flashcards

1
Q

what leads show the anteroseptal region of the heart?

A

V1-V4

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2
Q

what leads show the inferior region of the heart?

A

II,III and aVF

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3
Q

what leads show the anterolateral region of the heart?

A

V4-V6,I and aVL

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4
Q

what leads show the lateral region of the heart?

A

I, aVL +/- V5-6

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5
Q

what leads show the posterior region of the heart?

A

tall R waves V1-2

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6
Q

what coronary artery corresponds to the anteroseptal region of the heart on an ECG?

A

left anterior descending

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7
Q

what coronary artery corresponds to the inferior region of the heart on an ECG?

A

right coronary

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8
Q

what coronary artery corresponds to the anterolateral region of the heart on an ECG?

A

left anterior descending or left circumflex

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9
Q

what coronary artery corresponds to the lateral region of the heart on an ECG?

A

left circumflex

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10
Q

what coronary artery corresponds to the posterior region of the heart on an ECG?

A

usually left circumflex, also right coronary

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11
Q

when depolarisation moves towards the recording electrode what will this look like on the ECG?

A

upward deflection

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12
Q

when depolarisation moves away from the recording electrode what will this look like on the ECG?

A

downward deflection

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13
Q

what does the P wave symbolise?

A

atrial depolarisation

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14
Q

how long is the normal p wave duration?

A

less than 0.12s

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15
Q

what does the QRS complex represent?

A

ventricular activation or depolarisation

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16
Q

what is the normal duration of the QRS complex?

A

0.1s or less

17
Q

what does the T wave represent?

A

ventricular repolarisation

18
Q

what does the PR interval reflect?

A

the time for the SA node impulse to reach the ventricles

19
Q

where does the PR interval start/end?

A

start of P wave to the start of QRS complex

20
Q

how long is the normal duration of the PR interval?

A

0.12-0.2secs

21
Q

where is the ST segment?

A

end of the QRS complex to the start of the T wave

22
Q

where is the QT interval?

A

start of QRS complex to end of T wave

23
Q

what does the QT interval reflect?

A

time for ventricular depolarisation and repolarisation

24
Q

what is the normal duration of the QT interval?

A
  1. 44Secs in males

0. 46secs in females

25
Q

what happens during the ST segment?

A

ventricles contract (systole)

26
Q

what happens during the TP segment?

A

ventricles relax (diastole)

Cardiovascular (16 decks)

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