Chamber Hypertrophy and Enlargment: Difference between revisions

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The ECG shows a negative QRS complex in I (and thus a right [[heart axis]]) and a positive QRS complex in V1.
The ECG shows a negative QRS complex in I (and thus a right [[heart axis]]) and a positive QRS complex in V1.


*R > S in V1 (R must be > 0.5 mV)
*QRS duration < 120ms
*Right [[heart axis]]
*Right [[heart axis]] (> 110 degrees)
* Dominant R wave:
** R/S ratio in V1 or V3R > 1, or R/S ratio in V5 or V6 <= 1
** R wave in V1 >= 7 mm
** R wave in V1 + S wave in V5 or V6 > 10.5 mm
** rSR= in V1 with R'= > 10 mm
** qR complex in V1
* Secondary ST-T changes in right precordial leads
* Right atrial abnormality
* Onset of intrinsicoid deflection in V1 between 0.035 and 0.055 s
 
{{clr}}
{{clr}}