Is there chamber enlargement on this EKG?
Sinus at 100/minute
Axis: right axis deviation
Intervals: QRS prolonged at 160ms with a tall R in V1 – RBBB
Now, chamber enlargement?
With a RBBB the usual criteria for both right and left ventricular chamber enlargement are somewhat altered.
LVH criteria become less sensitive (eg not seen as reliably), but if voltage criteria for LVH are met with a RBBB they are quite specific.
In this week’s tracing, the very tall T in V1 is 18mm, and with the right axis deviation is diagnostic of right ventricular hypertrophy.