IRBBB and Lexapro

[MDFL1]

Any notede association between IRBBB and Lexapro use? My mate has recently experienced a hypomanic episode after switching from longterm Zoloft to Lexapro ( Switched due to intractible heartburn, but Zoloft had excellent antidepressant effect) During the  early (and unrecognized) phase of the hypomanic episode, a routine ( age 57) ECG was performed and noted IRBBB. This is a new finding, not appearing on any previous ECKs, and is totally asymptomatic.
Is this likely a symptom of either the hypomanic episode or the lexapro use? Since, has switched back to low-dose Zoloft and low-dose  Lamictal for mood stabilization, and is doing very well.  Supposed  "possible emergence of bi-polar disorder" has been re-diagnosed as drug-emergent hypomanic episode.
Any insight appreciated.
Thanks


This discussion is related to IRBBB.

[bbxx]

Antidepressants can cause heart rythm issues. If you type in Lexapro side effects on the heart you can learn a lot.

[curmudgen]

IRBBB   incomplete right bundle branch  -  part of the electrical pathway that coordinates your heart beat and is usually benign...that is, asymptomatic. It is unlikely that it was caused by the medication.  RBBB can develop at anytime and since it is usually asymptomatic goes undetected until an ECG is taken.  From my personal experience, I didn't have it in 1984 and it appeared in 2009.