NEET MDS

The Power Course

Which part of the ECG corresponds to ventricular repolarization



Choices

1 ) The P wave
2 ) The QRS complex
3 ) The T wave
4 ) The U wave
5 ) The PR interval

Explanation


ECG has P, QRS, T and U waves. it has PR, QT,  and ST Interval. and segments PR and ST 

ECG Waves

P wave  Atrial depolarization
QRS complex Ventricular depolarization
T wave Ventricular repolarization
U wave U inconsistent may be due to ventricular myocytes long action potential

ECG Intervals

Intervals Normal duration in seconds The corresponding event in the heart
  Average Range  
PR Interval 0.18 0.12 to 0.20 Atrioventricular conduction
QRS duration 0.08 to 0.10 Ventricular depolarization
QT interval 0.40 to 0.43 Ventricular action potential
ST interval 0.32   Plateau portion of ventricular action potential

ref Ganog page 514 edition 26th


Answer

The T wave

Last Modified : 25-Dec-2019

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