The only vein the anaesthetist could find to cannulate was on the patient's inner wrist - a location that can be quite painful.
From where I stood on the other side of the bed, I noted that the patient had a small tattoo on their arm and said cheerfully, "well you're obviously not afraid of needles in your arm!"
The patient just looked at me and then turned back to the anaesthetist, who deftly threaded the cannula into the small vein and undid the torniquet.
And that's when I saw the track marks.
.