Abstract
To explore the effect of in vitro porcine esophageal variceal pressure on complete ligation degree for polycyclic ligators. An in vitro model of experimental porcine venous vessels was used to test various venous pressures. Three treatment groups were designated according to the preset pressure range: P1 = 25-30 cmH₂O; P₂ = 35-40 cmH₂O; P₃ = 45-50 cmH2O. The effect of pressure on ligation was assessed and compared among the groups. Complete ligation was achieved at a rate of 56.25% (18/32) in group P1, 37.5% (12/32) in group P₂, and 33.33% (11/33) in group P₃ (χ (2) = 3.6126; P = 0.0573). Higher variceal pressures impair the ligation completion rate. Therefore, measuring variceal pressure may help predict the effect of endoscopic ligation and guide treatment choice.
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