It doesn’t mention the treatment he received or if he suffered from any other health issues. He appeared to be much like the President in his zest for the deal. Once you accumulate enough money business is no longer about making money to pay the bills. Money is just a way of keeping score.
This is a great read for those who are interested in the business world.
Based on article clues, he most likely was on a ventilator, medically induced coma.