Venous blood pressure relative to the development of bovine udder edema.
Cranial superficial epigastric (milk vein) and jugular venous blood pressure were measured in 8 cows with udder edema and in 3 normal control cows at least 2 weeks before parturition, at parturition, and 2 weeks after parturition. Cows with udder edema had a significant mean increase (P less than or equal to 0.05) in cranial superficial epigastric venous pressure at parturition when compared with pressures 2 weeks prepartum and 2 weeks postpartum. Unaffected control cows had an insignificant increase in cranial superficial epigastric venous pressure during these 3 periods of measurement. There was an insignificant increase in jugular venous blood pressure during the 3 periods of measurement in affected and control cows. A correlation was observed between mammary blood flow and cranial superficial epigastric blood pressure at parturition (r = -0.659, P less than or equal to 0.05).
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000503:physiopathology*; D004487:Edema / Q000503:physiopathology / Q000662:veterinary*; D005260:Female; D007601:Jugular Veins / Q000503:physiopathology; D007743:Labor, Obstetric; D008321:Mammary Glands, Animal / Q000098:blood supply; D049590:Postpartum Period; D011247:Pregnancy; D012039:Regional Blood Flow; D014680:Veins / Q000503:physiopathology; D014690:Venous Pressure