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自贡市第四人民医院普外科,四川 自贡 643000
兰柯,E-mail:hdkd25@163.com
收稿:2025-09-01,
纸质出版:2026-05-25
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兰柯,杨华,舒仕龙等.保留左结肠动脉对直肠吻合口血流动力学的影响[J].局解手术学杂志,2026,35(05):432-436.
LAN Ke,YANG Hua,SHU Shi-long,et al.Effect of preserving left colic artery on the hemodynamics of the rectal anastomosis[J].JOURNAL OF REGIONAL ANATOMY AND OPERATIVE SURGERY,2026,35(05):432-436.
兰柯,杨华,舒仕龙等.保留左结肠动脉对直肠吻合口血流动力学的影响[J].局解手术学杂志,2026,35(05):432-436. DOI: 10.11659/jjssx.09E025002.
LAN Ke,YANG Hua,SHU Shi-long,et al.Effect of preserving left colic artery on the hemodynamics of the rectal anastomosis[J].JOURNAL OF REGIONAL ANATOMY AND OPERATIVE SURGERY,2026,35(05):432-436. DOI: 10.11659/jjssx.09E025002.
目的
2
利用术中超声测量吻合口附近结肠边缘动脉(MAD)的血流速度,辅助判断吻合口的血供,从而探索保留左结肠动脉(LCA)对吻合口近端血供的影响。
方法
2
纳入2021年1月至2023年1月于我院接受腹腔镜直肠癌前切除术的患者40例。统计肠系膜下动脉(IMA)分支的类型。测量IMA根部到第1分支的长度,以及IMA、LCA、MAD的直径。术中超声测量IMA夹闭前后吻合口附近MAD的血流速度,并记录超声波形。利用Tardus-Parvus波形评估吻合口的低灌注状态。采用单因素
Logistic
回归分析评估各临床及影像学变量与Tardus-Parvus波形发生的相关性,并观察患者围术期情况。
结果
2
IMA最常见的分支类型为Ⅰ型(82.5%),其余依次为Ⅱ型(2.5%)、Ⅲ型(15.0%)、Ⅳ型(0)。IMA长度为(3.3±0.8)cm,LCA、MAD、IMA的直径分别为(3.0±1.1) mm、(2.2±0.5)mm、(5.0±0.8)mm。IMA夹闭前MAD平均血流速度高于夹闭后(
P
0.05)。13例(32.5%)患者在IMA夹闭后出现Tardus-Parvus波形。单因素
Logistic
回归分析显示,Tardus-Parvus波形的出现与高龄、LCA直径及LCA直径/MAD直径显著相关(
P
0.05)。术中成功完成了253淋巴结的清扫,仅在2例(5.0%)患者清扫的淋巴结中发现癌细胞。患者均保留LCA,未出现吻合口漏。有4例(10.0%)患者吻合口处存在一定张力,6例(15.0%)患者在拔除导尿管后出现尿潴留,出院前均已恢复。
结论
2
保留LCA可改善直肠癌手术中吻合口附近的灌注。术中超声可以评估吻合口附近的灌注情况,高龄和LCA直径可作为IMA结扎后肠系膜低灌注状态的预测指标。
Objective
2
To use intraoperative ultrasound for measuring the blood flow velocity of the colonic marginal artery of Drummond (MAD) near the anastomosis to assist in assessing the blood supply to the anastomosis, thereby exploring the effect of preserving left colic artery (LCA) on the blood supply to the proximal anastomosis.
Methods
2
Forty patients who underwent laparoscopic anterior resec
tion for rectal cancer at our hospital from January 2021 to January 2023 were enrolled. The branching patterns of the inferior mesenteric artery (IMA) were collected. The length from the root of IMA to its first branch,as well as the diameters of the IMA,LCA,and MAD were measured. The blood flow velocity of the MAD near the anastomosis was detected by intraoperative ultrasound before and after IMA clamping, and the ultrasound waveforms were recorded. The hypoperfusion of anastomosis was determined by Tardus‑Parvus waveforms. Univariate
Logistic
regression was used to assess the association between clinical/imaging variables and the presence of Tardus‑Parvus waveforms, and perioperative status of patients were monitored.
Results
2
The most common branching pattern of the IMA was type Ⅰ (82.5%), followed by type Ⅱ (2.5%), type Ⅲ (15.0%), and type Ⅳ (0). The length of the IMA was (3.3±0.8)cm.The diameters were (3.0±1.1)mm for LCA, (2.2±0.5)mm for MAD, and (5.0±0.8)mm for IMA. The mean blood flow velocity of the MAD before IMA clamping was higher than that after clamping (
P
0.05).Thirteen patients (32.5%) exhibited Tardus-Parvus waveforms after IMA clamping. Univariate
Logistic
regression analysis showed that the occurrence of the Tardus‑Parvus waveform was significantly correlated with advanced age, LCA diameter, and the LCA diameter/MAD diameter (
P
0.05). During surgery, a total of 253 lymph nodes were successfully dissected, and cancer cells were found in the dissected lymph nodes of only 2 patients (5.0%). The LCA was preserved in all patients, while no anastomotic leakage developed. There was certain tension at the anastomosis in 4 patients (10.0%), and 6 patients (15.0%) developed urinary retention after catheter removal, all of whom recovered before discharge.
Conclusion
2
Preserving LCA improves perfusion near the anastomosis in rectal cancer surgery. Intraoperative ultrasound can assess the perfusion near the anastomosis, and advanced age along with LCA diameter may serve as predictors of mesenteric hypoperfusion after IMA ligation.
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