In vortex motion fluid moves in curve path and the stream lines are curved. When the fluid flows between curved stream line, the centrifugal forces are setup which is counter balanced by pressure forces acting in the radial direction. The vortex motion has two types of curved motion. The first type called free vortex type, the fluid moves due to its own natural effect but energy is not added to...

background: post-operative nausea and vomiting (ponv) following surgical operations requiring general anesthesia are common and distressing. the incidence of ponv may be as high as 70% during the first 24 hrs of tonsillectomy.   objective: this study determines the effects of intraoperative well-hydration on postoperative nausea and vomiting.   methods: 90 asa i patients with age of 6-12 years ...