title: Preoperative prognostic indicators in cattle with abomasal volvulus.
abstract: A prospective study evaluating preoperative prognostic indicators in 80 cattle with abomasal volvulus was done. Surgical correction of the abomasal volvulus was performed in all animals. After surgery, cattle were categorized into 3 groups: productive (acceptable milk production or appetite, n = 59), salvaged (poor milk production or appetite, n = 10), and nonsurvivors (n = 11). Mean values for study variables did not differ significantly between salvaged and nonsurvivor groups. Cattle in these 2 groups were combined to form a nonproductive group, which was compared with the productive group. Productive cattle had a significantly lower preoperative heart rate than nonproductive cattle, were less dehydrated, had lower serum alkaline phosphatase (ALP) activity and serum creatinine concentration, more frequent rumen contractions, higher serum Na+ and Cl- concentrations, and had been inappetent for a shorter period. Significant differences were not detected in blood pH, base excess, anion gap, PCV, and serum K+ concentrations between the 2 groups. Feces from nonproductive cattle tended to be reduced in volume and were significantly darker. A number of preoperative prognostic indices were evaluated by calculating the sensitivity, specificity, and positive predictive value (+PV) of each variable and by using logistic regression. Positive predictive values were generally higher in identifying productive cattle than nonproductive cattle.(ABSTRACT TRUNCATED AT 250 WORDS)
authors.affiliation: Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Ohio State University, Columbus 43210.
authors.forename: P D
authors.initials: PD
authors.lastname: Constable
authors.forename: G
authors.initials: G
authors.lastname: St Jean
authors.forename: B L
authors.initials: BL
authors.lastname: Hull
authors.forename: D M
authors.initials: DM
authors.lastname: Rings
authors.forename: G F
authors.initials: GF
authors.lastname: Hoffsis
mesh_terms: D000018:Abomasum / Q000601:surgery*; D000469:Alkaline Phosphatase / Q000097:blood; D000818:Animals; D001066:Appetite; D002417:Cattle; D002418:Cattle Diseases / Q000601:surgery*; D016009:Chi-Square Distribution; D002712:Chlorides / Q000097:blood; D003404:Creatinine / Q000097:blood; D003681:Dehydration; D005260:Female; D006339:Heart Rate; D008297:Male; D011237:Predictive Value of Tests; D011379:Prognosis; D011446:Prospective Studies; D012044:Regression Analysis; D012417:Rumen / Q000502:physiology; D012964:Sodium / Q000097:blood; D013277:Stomach Volvulus / Q000601:surgery / Q000662:veterinary*
chemical_list: D002712:Chlorides; D012964:Sodium; D003404:Creatinine; D000469:Alkaline Phosphatase