It also causes a whole host of other problems , none of which is at all pleasant . It additionally caused two visits to the emergency room because of blood glucose levels so high that they could n't be measured by either my home glucose meter or the meter at the hospital . I did n't feel particularly ill , but the doctor and nurses wasted no time pumping my full of IV liquids and insulin , and I was later told that I could have died .
According to the above context, answer the following question.
How does the narrator feel about the medical staff .


Grateful .