AniCura Kleintierspezialisten Augsburg, Augsburg, Germany.
Institute of Mechanical Technology, Poznan University of Technology, Poznan, Poland.
J Feline Med Surg. 2024 Sep;26(9):1098612X241271871. doi: 10.1177/1098612X241271871.
The aim of this study was to evaluate, in vitro, the load and type of failure of the sutured ventral abdominal fascia of cats with different sizes of suture material made of polydioxanone (PDX) (2-0, 3-0, 4-0, 5-0 USP).
A total of 32 samples of the ventral abdominal wall from 16 cadaveric cats were harvested using an hourglass-shaped template. The samples were sectioned longitudinally along the linea alba and then sutured together in a continuous pattern using four different randomly assigned sizes of pdx suture material (2-0, 3-0, 4-0, 5-0 USP). A universal testing machine was used for linear distraction of the samples. The tensile strength and type of failure were recorded and analysed. Three types of failure were defined: suture material failure (S), suture line failure (T1) and failure of the abdominal wall further away from the linea alba (T2).
The frequency of suture material failure decreased with increasing suture size. Suture size 5-0 failed due to a S failure in 6/8 samples, PDX 4-0 failed in 2/8 samples and PDX 3-0 failed in only 1/8 samples. However, PDX 2-0 failed due to only T1 or T2 failures, with both failures being almost equally represented. No statistically significant differences in the load to failure between PDX 2-0, 3-0 and 4-0 were noted ( >0.05). The risk of suture failure increased with decreasing suture size diameter.
PDX 2-0 and 3-0 can be used without reservation for the closure of ventral midline coeliotomy in cats. Although there was no statistically significant difference between PDX 2-0, 3-0 and 4-0, PDX 4-0 showed a higher probability for suture breakage and should be used only after careful consideration of the patient while clinical evaluation is pending. Pdx 5-0 cannot be recommended as a safe suture size for this type of surgical closure.
本研究旨在评估不同规格聚二氧杂环已酮（PDX）缝线（2-0、3-0、4-0、5-0USP）缝合猫腹侧筋膜的承载能力和失效类型。
使用沙漏形模板从 16 只剖解猫的腹侧腹壁采集 32 个样本。样本沿白线进行纵向切开，然后使用 4 种不同随机分配规格的 PDX 缝线材料进行连续缝合。使用万能试验机对样本进行线性分离。记录并分析拉伸强度和失效类型。定义了 3 种失效类型：缝线材料失效（S）、缝线线失效（T1）和远离白线的腹壁失效（T2）。
缝线规格越大，缝线材料失效的频率越低。5-0 缝线规格的缝线材料失效 6/8 例，4-0 缝线规格的缝线材料失效 2/8 例，3-0 缝线规格的缝线材料失效 1/8 例。然而，2-0 缝线规格的缝线材料仅因 T1 或 T2 失效，两种失效几乎各占一半。2-0、3-0 和 4-0 缝线的失效负载无统计学差异（>0.05）。缝线尺寸越小，缝线失效的风险越大。
PDX 2-0 和 3-0 可毫无保留地用于猫的腹侧中线剖腹缝合。尽管 2-0、3-0 和 4-0 缝线之间没有统计学差异，但 4-0 缝线的缝线断裂概率更高，在临床评估进行的同时，应在仔细考虑患者的情况下使用。5-0PDX 缝线不能作为这种手术缝合的安全缝线尺寸推荐。
