When multiserver administration is implemented, target servers periodically contact the master server to upload information on jobs that have been executed, and download new jobs. The process of contacting the master server is called server polling, which takes place at regular polling intervals. Polling Intervals. The polling interval (one minute by default) controls how frequently the target server connects to the master server to download instructions and upload the results of job execution.
In all cases of idiopathic or secondary adult TTP, plasma exchange is the basic treatment of choice. Plasma exchange involves the use of automated machinery which permits the removal of the patient's plasma and replacement with donor plasma during a 3 to 4 hour treatment.
Thrombotic thrombocytopenic purpura (TTP) is a rare blood disorder. In TTP, blood clots form in small blood vessels throughout the body. The clots can limit or block the flow of oxygen-rich blood to the body's organs, such as the brain, kidneys, and heart. As a result, serious health problems can develop. The increased clotting that occurs in TTP also uses up platelets (PLATE-lets) in the blood. Platelets are blood cell fragments that help form blood clots. These cell fragments stick together to seal small cuts and breaks on blood vessel walls and stop bleeding.