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.
(2) The conventional millimetre of mercury (mmHg) and the conventional inch of mercury (inHg) are defined in terms of the pressure generated by a mercury column of unit length and of assigned density 13595.1 kg/m3 at 0 Â°C under standard gravity of 9.80665 m/s2.