I tried ECT about four years ago when NOTHING (medication, theapy, etc) was working and my depression was diagnosed as "chronic severe." I was hospitalized eight times in two years during that period of time.
Finally the psyc at themental health hospital that I went to recommended unilateral ECTs. They did them there. I had four rounds and my depression was gone and I was a bit manic. I suffered short term memory and can't remember to this day much of what happened for quite a while after the treatments.
Then the depression came back with vengeance and back to the hospital I went. I had two rounds and during the second round I spiked a fever, a side effect that tells them to back off. I had no more and they suggest that I have no more in the future.
I told my psychiatrist that everyone hates me. He said, "That cannot be true. You haven't met everyone yet!"