I have been reading your blogs and would like to help in some way. However, all i can do is tell you what i have done to get through my panic attacks or what has reassured my during a panic attack. It has not always helped and I have called 999 on several occasions.
When I have a panic attack i lean against my warm radiator(cautiously) at home whilst sitting on the floor. The warmth tends to relax me. I also have a cup of tea.
I have also listened to a video of professor Paul Salkovskis who is an expert on anxiety disorders( kings college, London). You can find him by typing in 'panic disorder-nhs choices' and going for the top adres that appears. The introduction has his video. It also has other information.
I hope this helps. I am new to panic disorders.