Control your emotions in crisis...
In critical settings, diseases are not too many but there are many clinical situations even in one disease. It's not always a clear decision with an experienced doctor. Doctors are always contemplating regarding the root cause of the illness and the best way to deal with it, he is more concerned. So it is better to give him space, and no point in asking too many questions or provide his phone number to relatives to ask him current situation time and again. This only disturbs his decision-making...
The worry of parents and family is truly understandable, it's good to trust the almighty because he is the ultimate saviour...