Describe and interpret this ECG.
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Rate:
Atrial = 73 min-1
Ventricular = 73 min-1
Rhythm:
Sinus
P waves:
Duration = 80 ms
Amplitude = 1 mV
PR interval:
Duration = 70 ms
Morphology = Normal
QRS complex:
Duration = 156 ms
Axis = -43°
Q Waves:
Nil
R wave progression:
Normal
LV Hypertrophy [Sokolow; SV1 + (RV5 or RV6) > 35mm) or RI + SIII > 25mm]?
Yes
RV Hypertrophy [R/S ratio V5 or V6 < 1 or R/S ratio V1 > 1 or S1S2S3 pattern]?
No
ST segments:
Duration = 120 ms
Morphology = elevation III, V1-3; sagging depression I, aVL, V4-6
T waves:
Duration = 180 ms
Morphology = inversion I, aVL, V4-6
QT interval:
QT duration = 460 ms
QTc duration = 506 ms
Additional comments:
Nil
Interpretation: This 12-lead electrocardiogram demonstrates a short PR interval with a LBBB pattern due to Wolff-Parkinson-White pre-excitation syndrome type B (indicates a right sided accessory pathway). The voltage criteria for LVH are part of the WPW disease and NOT reflective of LVH.
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