What is the current evidence-based or best protocol for removing air and discontinuing use of a transradial hemostasis device (TR band) to prevent complications?
There are several protocols readily accessible on the I'net. A really nice article can be accessed at: http://bmctoday.net/citoday/pdfs/CIT0410_f3simon.pdf
We also use the pleth waveform to monitor perfusion to the hand--place the pulse oximeter probe on the thumb. Reference: http://circinterventions.ahajournals.org/content/5/1/127
I can answer based on my centre (Szpital Wielospecjalistyczny w Inowowrocławiu, Poland ) experience - approx 7000 patients up to now - with Terumo TR band. We start to use it in 2013. Initially minimal air injection that is effective for haemostasis (usually approx 12-14ml) , then after 1 hour same moneouver (usually less compression - about 2 ml of air less) and removal after 4 hours (3 hours after revision). Number of serious complications is unexpectedly low; >95% of patients heve still patent radial artery after 2-3 interventions but we use also glidesheat slender downsized terumo radial sheats.