lab Flashcards by مشعل الحميدي

Q

duration of P-R interval?

A

120-200 msc

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Q

P wave is biphasic in
…… lead?

A

V1

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Q

duration of QRS complex?

A

<120 msc

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Q

Q wave normally present in lead?

A

I, aVL, V5,V6

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Q

what is the transition zone of RS wave ratio?

A

ratio of R wave to S wave becomes 1 in V3,V4 lead

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Q

duration of ST segment?

A

+-1mm

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Q

T wave is upright everted in all leads except?

A

aVR, V1(flat or inverted)

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Q

what is the amplitude of T wave in limb and chest lead?

A

<=0.5mv in limb lead
<=1mv in chest lead

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Q

shape of U wave is?

A

rounded, upright

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Q

amplitude of U wave is

A

0.1 T wave

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