As road-staff, we regularly have to contend with doctors and nurses complaining about our choice of whether or not to cannulate a patient, which vein we use, or why we didn't bother at all sometimes.
Trying to explain at hospital that the patient was trapped in a car that was upside down and on fire, surrounded by a herd of elephants that were corralled by a pride of ravenous lions, which in turn were being shot at by hunters, doesn't seem to hold much water.
Strangely, therefore, sticking lines in people out in the field isn't always quite as simple as dealing with a patient in the relatively sane (I said relatively) of the hospital. Some IV's are easier than others, but until now, there has been no actual scale on which to compare and contrast the complex nature of one of the most basic aspects of our job.
However, a while back, The Happy Medic came up with one.
So as a weekend treat, I hereby attach a link to a "difficulty scale" for sticking needles in people.
It includes bonus points if the lighting is less than ideal, if you're hanging upside down, and various other "normal" variants to the tricks we must employ to do what in theory is a very simple task.
Simple, if your patient is four feet off the ground and horizontal in a well-lit hospital bed, and with several pairs of hands to do everything else, that is.