The role of HbA1c in identifying dogs at high risk for diabetes despite normal blood glucose levels.

The objective of this study was to determine whether ligation security in a standardized in-vitro vascular model is primarily influenced by tying force or filament configuration when comparing 2 commonly used suture materials: monofilament polydioxanone and pseudomonofilament polyamide. A standardized latex vascular model subjected to controlled intraluminal pressure (150 mmHg) was used. USP 2-0 sutures were applied using a 4-throw surgeon's knot at 5 predefined tying-force levels (6, 8, 10, 12, and 14 N). Three time intervals between the first and second throw (0, 10, and 20 s) were evaluated. A total of 300 ligations were tested. Leakage was defined as a detectable increase in distal pressure during a 30-second observation period. The effects of tying force, time interval, and suture material were analyzed using multivariate logistic regression. Tying force was significantly associated with leakage (P < 0.001). Leakage was eliminated only at 14 N for both materials, whereas high leakage rates occurred at lower force levels regardless of suture material. Time interval and suture material were not independently associated with leakage. These findings indicate that ligation security in this model is determined primarily by tying force rather than by filament configuration.