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.
And because of the relation between inch and mm (1 inch = 25.4 mm), the following conversion coefficients are provided: 1 hPa = 0.029530 inHg; 1 inHg = 33.8639 hPa; 1 mmHg = 0.03937008 inHg. Pressure data measured with the barometer should preferably be expressed in hectopascals (hPa).