A dialysis catheter is a catheter used for exchanging blood to and from a hemodialysis machine and a patient. The dialysis catheter contains two lumens: venous and arterial. This terminology is confusing, because both lumens are in the vein.
In order to practice as a dental hygienist, one needs a degree from a dental hygiene school and a state license. To become licensed, dental hygienists need to pass a clinical and written exam.
To become licensed, dental hygienists must: 1  Graduate from a formal dental hygienist training program (see step 3 above) 2  Pass a national dental hygienist board examination. 3  Pass the state-level dental hygienist board examination for the state in which they wish to practice.