Specifications provide a written description of the project that compliments the graphic drawings, describing the physical properties and performance characteristics of the materials to be used in the project.
PEG: Stands for percutaneous endoscopic gastrostomy, a surgical procedure for placing a feeding tube without having to perform an open laparotomy (operation on the abdomen). The aim of PEG is to feed those who cannot swallow. PEG may be done by a surgeon, otolaryngologist (ENT specialist) or gastroenterologist (GI specialist). It is done in a. hospital or outpatient surgical facility. Local anesthesia (usually lidocaine or another spray) is used to anesthetize the throat.
Pegylated interferon, usually called peginterferon, is a chemically modified form of the standard interferon that treats hepatitis C and rarely hepatitis B. 1  The difference between interferon and peginterferon is the PEG, which stands for a molecule called polyethylene glycol. The PEG does nothing to fight the virus. But by attaching it to the interferon (which does fight the virus), the interferon will stay in the body (specifically the blood) much longer. This process benefits hepatitis patients taking interferon because rather than needing to inject interferon up to three times a week, only one weekly injection is needed.