Firstly, I am so sorry to hear about your father, please accept my sympathy. For your questions, I think you should get to know these two things.
On the one hand, diabetes is chronic. But its complications are not only chronic. Diabetic hypertonic coma and ketoacidosis, are acute and fatal. Acute complications are generally found in patients with extremely poor glycemic control.
Here comes the second problem, peripheral blood sugar. The normal range is between 3.9 to 6.1. And if it comes to 33.3, I think it’s extremely horrible. Diabetes is a chronic disease. But without careful control, it can trigger acute fatal complication. If there are diabetic hypertensive patients at home, please advise them to listen to the doctor and manage the glucose and blood sugar as well as possible.