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 practice as a registered dental hygienist, a person must complete at least 2 years of postsecondary education in an accredited community or dental college or university and be approved by a state or regional board of dental and dental hygiene examiners.