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R wave in V1
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The examination of the QRS complex ought to be finished with a specific look at V1, which should be mainly S waveform
If R is dominant then this may be caused by:
- right bundle branch block
- right ventricular hypertrophy
- posterior MI
- Wolf Parkinson White syndrome (type A). The latter condition is also characterised by delta waves, a shoulder or slurred upstroke in the QRS complex (1)
- dextrocardia
- Duchenne's muscular dystrophy
- normal variant
Click here for example ECGs and further information
Reference:
- Joshi P (1990).Multiple Choice Questions for MRCP.2nd Edn. Butterworths.
Last reviewed 01/2018
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