Polypropylene (PP) mesh is commonly used in abdominal wall repair due to its ability to reduce the risk of organ damage, infections and other complications. However, the PP mesh often leads to adhesion formation and does not promote functional tissue repair. In this study, we synthesized one kind of aldehyde Bletilla striata polysaccharide (BSPA) modified chitosan (CS) hydrogel based on Schiff base reaction. The hydrogel exhibited a porous network structure, a highly hydrophilic surface and good biocompatibility. We wrapped the PP mesh inside the hydrogel and evaluated the performance of the resulting composites in a bilateral 1 × 1.5 cm abdominal wall defect model in rats. The results of gross observation, histological staining and immunohistochemical staining demonstrated the positive impact of the CS hydrogel on anti-adhesion and wound healing effects. Notably, the addition of BSPA to the CS hydrogel further improved the performance of the composites in vivo, promoting wound healing by enhancing collagen deposition and capillary rearrangement. This study suggested that the BSPA-modified CS hydrogel significantly promoted the anti-adhesion, anti-inflammatory and pro-angiogenesis properties of PP meshes during the healing process. Overall, this work offers a novel approach to the design of abdominal wall repair patches.

OBJECTIVE: Abdominal wall closure in patients with giant omphalocele (GOC) and complicated gastroschisis (GS) remains to be a surgical challenge. To facilitate an early complete abdominal wall closure, we investigated the combination of a staged closure technique with continuous traction to the abdominal wall using a newly designed vertical traction device for newborns.
METHODS: Four tertiary pediatric surgery departments participated in the study between 04/2022 and 11/2023. In case primary organ reduction and abdominal wall closure were not amenable, patients underwent a traction-assisted abdominal wall closure applying fasciotens®Pediatric. Outcome parameters were time to closure, surgical complications, infections, and hernia formation.
RESULTS: Ten patients with GOC and 6 patients with GS were included. Complete fascial closure was achieved after a median time of 7 days (range 4-22) in GOC and 5 days (range 4-11) in GS. There were two cases of tear-outs of traction sutures and one skin suture line dehiscence after fascial closure. No surgical site infection or signs of abdominal compartment syndrome were seen. No ventral or umbilical hernia occurred after a median follow-up of 12 months (range 4-22).
CONCLUSIONS: Traction-assisted staged closure using fasciotens®Pediatric enabled an early tension-less fascial closure in GOC and GS in the newborn period.

OBJECTIVE: Split abdominal wall muscle flap (SAWMF) is a technique to repair large defects in congenital diaphragmatic hernia (CDH). A possible objection to this intervention could be any associated abdominal muscle weakness. Our aim is to analyze the evolution of this abdominal muscle wall weakness.
METHODS: Retrospective review of CDH repair by SAWMF (internal oblique muscle and transverse) from 2004 to 2023 focusing on the evolution of muscle wall weakness.
RESULTS: Eighteen neonates of 148 CDH patients (12,1%) were repaired using SAWMF. Mean gestational age and birth weight were 35.7 ± 3.5 weeks and 2587 ± 816 g. Mean lung-to-head ratio was 1.49 ± 0.28 and 78% liver-up. Seven patients (38%) were prenatally treated by tracheal occlusion. Ninety-four percent of the flaps were used for primary repair and one to repair a recurrence. One patient (5.6%) experienced recurrence. Abdominal muscle wall weakness was present in the form of a bulge. Resolution of weakness at 1, 2 and 3 years was 67%, 89% and 94%, respectively. No patient required treatment for weakness or died.
CONCLUSIONS: Abdominal muscular weakness after a split abdominal wall muscle flap repair is not a limitation for its realization since it is asymptomatic and presents a prompt spontaneous resolution.
METHODS: IV.

OBJECTIVE: Incisional herniation (IH) is a frequent complication following midline abdominal closure with significant associated morbidity. Randomized controlled trials have demonstrated that the small bites technique (SBT) and prophylactic mesh augmentation (PMA) may reduce IH compared to mass closure techniques, but data are lacking on their implementation in contemporary surgical practice. This survey aimed to evaluate the use of the SBT and PMA and to identify factors associated with their adoption.
METHODS: Between 22 January 2023 and 16 March 2023, consultant surgeons across the UK were asked to complete a 25-question survey on closure of an elective primary midline incision.
RESULTS: Responses were received from 267 of 675 eligible surgeons (39.6%) in 38 NHS Trusts. Respondents were evenly split between tertiary centres (47.6%) and district general hospitals (49.4%). SBT and PMA were used by 19.9% and 3.0% of respondents, respectively. Compared to other techniques, surgeons using the SBT were more likely to close the anterior aponeurotic layer only, use single suture filaments, 2-0 gauge sutures and sharp needle points and routinely dissect abdominal layers to aid closure (all p < 0.001). Attendance at lectures/conferences on SBT (p = 0.043) and basing practice on available evidence (p < 0.001) were independently associated with use of the SBT. The commonest barriers to adopting SBT were a perceived lack of evidence (23.8%) and belief that personal IH rates were low (16.8%).
CONCLUSIONS: A minority of UK consultant surgeons have adopted the SBT or PMA. Practice change should be driven by more widespread dissemination of current evidence and procedural information.

暂无摘要。

OBJECTIVE: Endoscopic surgery is widely accepted for both elective and emergent abdominal surgery. This study was performed to assess the accuracy of preoperative adhesion mapping by abdominal ultrasonography (US).
METHODS: Intra-abdominal intestinal adhesions on the abdominal wall in 50 patients with a history of abdominal surgery were prospectively assessed by the visceral slide test with US before laparoscopic surgery from 2019 to 2022. Adhesion was assessed in six separate abdominal zones during US. Actual adhesion on the abdominal wall was confirmed during laparoscopic surgery.
RESULTS: The sliding distances in upper right, upper central, upper left, lower right, lower central, and lower left zones in patients with versus without intestinal adhesion were 4.4 versus 1.4 cm (P = .004), 3.4 versus 2.5 cm, 4.3 versus 1.3 cm (P = .011), 3.1 versus 1.5 cm (P = .0014), 3.3 versus 1.1 cm (P = .013), and 3.4 versus 0.8 cm (P = .0061), respectively. Receiver operating characteristic analysis revealed the optimal value of sliding distance as 2.5 cm and the area under the curve as 0.86. The specificity of US assessment of adhesion was lower in the central zone than in lateral zones. Loose adhesion mostly seen around the scar was attributed to either filmy tissue or omental adhesion, leading to visceral sliding during US.
CONCLUSIONS: This study revealed the reason for insufficient accuracy of preoperative US assessment of intestinal adhesion around the scar area because of loose adhesion. The upper lateral area might be optimal for first port insertion.

A 76-year-old woman was investigated for epigastric pain on a background of a laparoscopic distal pancreatectomy and splenectomy for pancreatic ductal adenocarcinoma 4 years prior. Imaging revealed an isolated 32 mm fluorodeoxyglucose avid lesion contacting both the anterior abdominal wall and greater curvature of the stomach. Immunohistochemistry and fine needle biopsy confirmed a phenotype consistent with metastatic pancreatic adenocarcinoma. Laparoscopic excision of the mass and partial gastrectomy for clearance of margins was performed. Histopathology demonstrated a poorly differentiated pancreatic ductal adenocarcinoma, and the patient received adjuvant gemcitabine/capecitabine following an uncomplicated postoperative course. This article presents a rare case of isolated abdominal wall recurrence of pancreatic ductal adenocarcinoma, which was successfully treated with surgical resection and adjuvant chemotherapy.

目的： 评估腹腔镜造口旁疝修补联合腹壁及腹膜外造口重建——“D式造口旁疝修补术”在永久性乙状结肠造口后造口旁疝中的可行性。 方法： 采用回顾性观察性研究的方法，纳入疝脱出物还纳困难、有发生急性嵌顿和绞窄性肠梗阻危险以及严重影响患者的美观和生活质量、严重影响造口护理的患者。排除随访期内肿瘤复发和（或）新发以及失访者。回顾性分析2020年6月至2022年8月江苏省苏北人民医院连续收治的25例永久性乙状结肠造口后造口旁疝患者的临床资料，其中男性9例，女性16例，年龄（66.7±8.6）岁。D式造口旁疝修补术操作步骤：腹腔镜下回纳疝内容物，清除疝囊并在保护系膜血管弓的情况下游离脾区肠管；原造口开腹下操作，松懈肠管并清除腹腔镜下无法操作的疝囊组织；于原造口外上行腹膜外造口；关闭原造口。观察患者术中、术后及随访情况。 结果： 全组25例患者均顺利完成手术，无术中严重并发症的发生，手术时间为（128.4±32.3）min，术中失血量（58.0±13.6）ml，术后首次肛门排气时间（21.8±4.7）h。术后住院时间（7±2）d，住院费用（2.4±0.2）万元。术后共出现3例（12.0%）短期并发症：其中切口感染、造口回缩和缺血各1例。6例（24.0%）发生长期并发症，其中术后慢性疼痛5例（20.0%），部分肠梗阻1例（4.0%），均经保守治疗后改善。 结论： D式造口旁疝修补术用于造口旁疝修补联合腹壁及腹膜外造口重建安全可行。.

BACKGROUND: valproic acid (VPA), an epigenetic drug, has potential for the treatment of neoplasms. Its effects on the healing of the peritoneal-musculo-aponeurotic plane (PMA) of the abdominal wall are studied.
METHODS: sixty Wistar rats were allocated into two groups: experimental (VPA) and control (0.9% sodium chloride), treated daily, starting three days before the intervention and until euthanasia. Under anesthesia, a median laparotomy was performed and repaired with two synthetic layers. Assessments took place 3, 7 and 14 days after surgery. The integrity of the wounds, the quality of the inflammatory reaction, the intensity of the leukocyte infiltrate, collagen synthesis, the intensity of angiogenesis and the presence of myofibroblasts were studied.
RESULTS: there was dehiscence of the PMA plane in 11 of the 30 animals (p=0.001) in the experimental group. There was no difference in the quality and intensity of the inflammatory reaction. Immunohistochemistry revealed, in the experimental group, less collagen I (p3=0.003, p7=0.013 and p14=0.001) and more collagen III (p3=0.003, p7=0.013 and p14= 0.001). Collagen evaluated by Sirus Supra Red F3BA showed, in the experimental group, less collagen at all three times (p<0.001) with less collagen I and collagen III (p<0.001). A lower number of vessels was found on the 3rd day (p<0.001) and on the 7th day (p=0.001) and did not affect the number of myofibroblasts.
CONCLUSIONS: VPA showed dehiscence of the PMA plane, with less deposition of total collagen and collagen I, less angiogenic activity, without interfering with the number of myofibroblasts.

Abdominal hernia mesh is a common product which is used for prevention of abdominal adhesion and repairing abdominal wall defect. Currently, designing and preparing a novel bio-mesh material with prevention of adhesion, promoting repair and good biocompatibility simultaneously remain a great bottleneck. In this study, a novel siloxane-modified bacterial cellulose (BC) was designed and fabricated by chemical vapor deposition silylation, then the effects of different alkyl chains length of siloxane on surface properties and cell behaviors were explored. The effect of preventing of abdominal adhesion and repairing abdominal wall defect in rats with the siloxane-modified BC was evaluated. As the grafted alkyl chains become longer, the surface of the siloxane-modified BC can be transformed from super hydrophilic to hydrophobic. In vivo results showed that BC-C16 had good long-term anti-adhesion effect, good tissue adaptability and histocompatibility, which is expected to be used as a new anti-adhesion hernia repair material in clinic.