He continues in another post on Twitter:
Last week's check showed inflammation around the heart, which now requires a few more months of rest and steady recovery.
Even though it is not what I was hoping for, I know that all this is part of the process of getting back to 100 percent ", he writes.
Future decisions are delayed
The heart operation in early January seemed to be the end of his career.
Then Henrik Lundqvist, who belongs to the NHL club Washington, started going out for runs and when he then did ice skating - then the speculation about a possible comeback took off.
He himself has previously announced that decisions about the future are delayed:
"Getting back to the rink this week has been a reward.
Of course, my health has the highest priority.
It will take months before I can make a decision about the future, and more tests and discussions with doctors are required.
What I know with one hundred percent certainty is that I still love ice hockey ", Lundqvist wrote on Twitter at the end of February.