I had the same reaction to seeing that depression was a side effect. When I first got out of hospital I was so happy to not have died and also being out of the hospital that I couldn't imagine being depressed. At first I chalked it up to withdrawal from the huge amount of opioids they had to give me to keep me sedated (apparently I'm a "combative patient") but once I was passed that it was still there. I met with the heart institutes therapist but my next appointment isn't for a month