EXactly. You couldnt have known. I know this happened a year ago and I hope that in this year you have been able to heal a bit.
I lost my baby girl today (WARNING mentions infant death in some detail) - Page 3
I am so sorry for your loss.
I lost my second child in a very similar way over 11 years ago now. He was 5 weeks old at the time. I realized there was something wrong within minutes. The paramedics and hospital did manage to restart his heart, but that only meant that we had to decide to remove life support 5 days later. His brain stem had shut down.