anal fistula (fistula in aÂ´no) one opening on the cutaneous surface near the anus, which may or may not communicate with the rectum. arteriovenous fistula one between an artery and a vein, either pathologic (such as a varicose aneurysm) or surgically created to ensure an access site for hemodialysis.
1 millibar (or hectopascal/hPa), is equivalent to 0.02953 inches of mercury (Hg). It is therefore only necessary to multiply a reading in millibars by the latter figure, to achieve the required conversion. E.g. for 1023 mbar, multiply by 0.02953=30.21 inches.
PSI or inch of water column. The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.000145037738007 PSI, or 0.00401463078662 inch of water column. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between pounds/square inch and inches water column.