17. Normal ECG Flashcards

1
Q

In which leads is the P wave positive?

A

1, 2, V4, V5, V6 and aVF

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2
Q

What is the acceptable range for the P-R interval?

A

.12 to .20 seconds

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3
Q

What is the acceptable range for the QRS interval?

A

.05 to .10 seconds

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4
Q

What is the acceptable elevation for the ST segment?

A

No more than 1mm in standard leads

No more than 2mm in chest leads

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5
Q

In which leads is the T wave positive?

A

1, 2, V3, V4, V5, V6

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6
Q

What is the acceptable range for height of the T wave?

A

5mm in standard leads

10mm in precordial leads

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7
Q

What might an elongated QRS interval signify?

A

Bundle branch block

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8
Q

What are the “official” values for tachycardia and bradycardia?

A

Tachycardia = >100 bmp

Bradycardia = <60 bpm

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