After having a second opinion, he recommended to have an groin arterial angiogram to see the state of the artery.
Wow......its an invasive procedure and from the view it looked as if all might be ok. My hopes rose and I was planning to go back to the gym the following week!!!
THey then recommended to go for a TOS blood flow test. I didnt even know such machines existed. The results clearly showed that with the arm raised very little blood is flowing to the right wrist.
At least the artery is in good repair and wont need to be replaced. That afternoon, back to the thoracic surgeon and in for surgery on Tuesday for a scalenectomy and 50% chance of rib removal.

I dont think there there is any other test to be done that I havent had in the last week. I can honestly say they have done everything to assess my situation and now I am resigned to just get on with it.

I have been staggered by how thorough and fast assessments are done here in Singapore, its not unusual to see 3 specialists in one day, they just seem to make time. My Thoracic surgeon has been brilliant hand holding me through the tests and as soon as he makes a decision, he is on the phone there and then arranging the next specialist, giving directions to the office and even ringing on a Sunday to make arrangements for the next day. If he is not available when I ring him its because he is in surgery he hasnt failed to ring back straight away when he is out. Have certainly learnt a different side to Singapore.

So been told to expect 4-7 days in hospital and folllowed by 12 weeks of intense physio. Am confident in the team (looking at the estimated bill am sure it will be ferraris all round!) and my problem will be solved soon