| A/V | ampere/volt; arteriovenous |
|---|---|
| AVA | activity vector analysis; antiviral antibody; aortic valve area; aortic valve atresia; arteriovenous... |
| AVDO2 | arteriovenous oxygen saturation difference |
| AVDO2B | arteriovenous oxygen saturation difference, basal |
| AVM | arteriovenous malformation; atrioventricular malformation; aviation medicine |
| vitelline fistula | A fistula between the umbilicus and the terminal ileum along the course of a persistent vitelline cord. See: Meckel's diverticulum. (05 Mar 2000) |
|---|---|
| respiratory tract fistula | An abnormal passage communicating between any parts of the respiratory tract or between any part of the respiratory system and other organs. (12 Dec 1998) |
| reverse Eck fistula | Side-to-side anastomosis of the portal vein with the inferior vena cava and ligation of the latter above the anastomosis but below the hepatic veins; the blood from the lower part of the body is thus directed through the hepatic circulation. (05 Mar 2000) |
| perineovaginal fistula | A fistula through the perineum, opening into the vagina. (05 Mar 2000) |
| cholecystoduodenal fistula | Communication between gallbladder and duodenum secondary to severe cholecystitis with perforation and abscess formation; stones erode through adjacent duodenal wall, and large stones may cause gallstone ileus. (05 Mar 2000) |
| metroperitoneal fistula | A fistulous tract through the uterine wall opening into the peritoneal cavity. Synonym: metroperitoneal fistula. (05 Mar 2000) |
| pharyngeal fistula | A form of fistula colli congenita. (05 Mar 2000) |
| coccygeal fistula | A fistulous opening of a dermoid cyst in the coccygeal region. (05 Mar 2000) |
| pilonidal fistula | A dimple in the crease between the buttocks. (12 Dec 1998) |
| colocutaneous fistula | A fistula between the colon and the skin. (05 Mar 2000) |
| coloileal fistula | A fistula between the colon and the ileum. (05 Mar 2000) |
| colonic fistula | Internal, a fistula between the colon and a hollow viscus, external, a fistula between the colon and the skin. (05 Mar 2000) |
| colovaginal fistula | A fistula between colon and vagina. (05 Mar 2000) |
| colovesical fistula | A fistula between colon and urinary bladder. Synonym: vesicocolic fistula. (05 Mar 2000) |
| complete fistula | A fistula that is open at both ends. (05 Mar 2000) |