An experimental model for simultaneous chronic sampling of portal and systemic blood and gastrointestinal lymph via cannulae in conscious swine.
Surgical techniques are described whereby safe chronic cannulations of the portal vein, the external iliac artery and vein and the cisterna chyli of pigs were performed. The pigs tolerated the operations well and there was a short recovery period. They were unrestrained during the subsequent feeding experiments, when large sequential blood and lymph samples were withdrawn readily. The experimental periods varied from 3 to 46 days (mean : 13.4 days, SE: 2.0). All of 22 arterial cannulae remained patent (mean : 16 days, SE : 2.2), nineteen of 22 portal cannulae (mean : 15 days, SE : 1.8) and eighteen of 22 venous cannulae (mean : 14 days, SE : 1.9). The lymph cannula patency varied from 2 to 7 days, but lymph samples were easily obtained through all but one of them during the third postoperative day.
D000818:Animals; D001800:Blood Specimen Collection / Q000379:methods*; D002404:Catheterization / Q000662:veterinary*; D008196:Lymph; D011169:Portal Vein / Q000601:surgery*; D011183:Postoperative Complications; D013552:Swine / Q000097:blood / Q000601:surgery*; D013897:Thoracic Duct / Q000601:surgery*