Hello and thanks for your post,

You explained your recent experiences.

Unfortunately, we can't really comment in depth, not being directly involved with your clinical care. There was for a period of time, a global shortage of the BCG treatment from the manufacturers. This may have been at the time of your planned treatment, but I don't know for sure. Sometimes there are other reasons for swapping to chemotherapy drugs instead.

The decision around your spinal anaesthetic would have made by the anaesthetist and not by your main consultant. Your history of stroke and the number of previous anaesthetics would have had a bearing on their assessment of you and their decision to use a spinal. 

You need to talk this over with your team, or hospital specialist nurse when you get an opportunity. 

I hope that you get your questions addressed soon.

Best wishes,

Vanda