KSS, in our facility who does the scrubbing is directly related to who is administering the sedation. Our conscious sedation policy is VERY clear that the RN giving sedation must not have any other duties besides giving the sedation and monitoring the patient. period. Apparently this is based on ASA recommendations. I've worked in three different cath/angio labs over the past 25 years, and yes we did scrub AND administer IV sedation AND monitor the pt for the LONGEST time (even when we knew it wasn't supported in policy; "they" didn't get around to rearranging /hiring new staff to effect the necessary change for a long time). Considering my background, it's not surprising that I personally think it rounds one out to have that hands-on experience; think it gives you a better "feel" for what's happening, what's needed next, etc. 'Course, you may have that anyway, based on observation, training, experience and intuition (even without the hands-on). We recently trained the cath techs (both are resp. therapists) to scrub in. Now the RN monitors/sedates the pt, the cath tech scrubs
in and the rad. tech handles the Cathcor. Every now and then one of us needs to scrub while another RN monitors, if for some weird reason the two cath techs are unavailable. Only the "older" ("grandfathered," if you will) RNs scrub in with the Cardiologists. Two new RNs in training, unfortunately, will not get that hands-on training.
Radiology is a different story (we staff the Cath Lab and all aspects of Radiology too); the Rads are willing for the nurses to assist (as long as another RN handles sedation), and we're trying to allow the newbies to scrub in as much as possible, for that experience.
Check your conscious sedation policy; that, rather than territorialism, may account for the "hands off" practice. And even if it isn't, the techs may feel threatened by this change (some people are more resistant to change than others). You may need to reassure them (using the sedation policy <g>) that this is not based on a desire for a takeover.