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.
Dental hygienists remove deposits, such as plaque and tartar, from patients' teeth, take x-rays and apply fluoride treatments. The training required to become a dental hygienist typically includes a certificate or an associate's degree program in dental hygiene. Licensed dental hygienists may also obtain advanced education in order to broaden their careers in the field. Source: *U.S.