What is your preferred medical treatment of carpal tunnel syndrome that recurs after carpal tunnel release?

I am supposing that patient has initial recovery and symptoms are happening at least after a year. A good history to know is it really CTS or tenosynovitis. A repeat EMG/NCV test and compare from pre-release surgery to see how much improvement happened. If numbers are close to normal and surgery done less than a year ago, then reassure patient regarding slow recovery process and conservative treatment only. If numbers are still showing mod-severe CTS, then may try nerve blocks, wrist splints, PT...