Dialysis is defined as the process of removing excess water, solutes, and toxins from the blood through an artificial manner that is with use of some medical equipment or machinery. It is generally implied to those persons who are suffering from kidney ailments or their kidneys has stopped natural functioning. A dialysis technician who works with patients is in charge of assembling the machine, making sure it is in working order and ensuring it is sterile. The technician checks a patient's chart, administers local anaesthesia and inserts the needle, starting dialysis according to the prescription. During dialysis, the technician checks the anticoagulant and fluid rates and adjusts them as needed. The patient must be in the proper position and the technician must respond to any alarms or emergencies. After dialysis, the technician disconnects the machine and cleans it, and records a patient's vital signs. Other technicians may work only with machines, not with patients directly.