Welcome to HCM.
lasting for nearly 1o minutes is surely going to cause damage to brain tissue. This must be the reason that he does not have voluntary control over his bladder as well as the short memory.
Of course the doctor treating him must have done his best to manage the condition to the best of his ability.
What you can do is give him loving care and see that he doesn't feel embarrassed about his present situation.
Wishing you daddy all the best.