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 are licensed by the state or province in which they plan to practice. Generally, candidates for licensure must be graduates of an accredited dental hygiene program, must pass the National Board Dental Hygiene Examination taken near graduation and must pass a state or regional clinical examination.