intervals and waveforms
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11 Terms
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P wave
atrial depolarisation, begins when SA node fires
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QRS complex
ventricular depolarisation, 0.04 to 0.10 secs
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J point
where ventricular depolarisation stops, and ventricular repolarisation starts
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T wave
ventricular repolarisation
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U wave
repolarisation of the Bundle of His and Purkinje fibers
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PR interval
beginning of atrial depolarisation to beginning of ventricular depolarisation
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P-P interval
time between atrial depolarisation cycles
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R-R interval
time between ventricular depolarisation cycles
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QT interval
one complete ventricular cycle
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PR segment
end of atrial contraction and beginning ventricular contraction
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ST segment
early phase of ventricular repolarisation
Note 
Flashcards (60)