Background: Intra-abdominal hypertension (IAH) is a critical condition that can be induced by incarcerated indirect inguinal hernia (IIIH). There are currently no specific guidelines for laparotomy in children. To determine whether laparotomy should be performed during the management in pediatric patients with IIIH combined with IAH.Methods: This is a retrospective study of pediatric patients with IIIH and IAH who were admitted and treated at the Department of General Surgery of Jiangxi Provincial Children’s Hospital from 01/2010 to 06/2020. The patients were divided into Group A (intra-abdominal pressure (IAP) of 10-20 mmHg) and Group B (IAP ≥ 21 mmHg). Each group was further subdivided into Group 1 (decompression) and Group 2 (no decompression) depending on whether decompressive laparotomy was performed or not. The last follow-up was three months after discharge.Results: A total of 49 patients were enrolled, and divided into group A1 (n = 21), A2 (n = 10), B1 (n = 4), B2 (n = 14). Compared with patients in group A1, those who had decompression (group A2) has longer hospital stay (7.5 ± 1.9 vs. 5.2 ± 2.1, p = 0.01), higher 24h-postoperative IAP (11.3 ± 2.4 vs 9.5 ± 2.1, p = 0.03), longer PICU stay (2.1 ± 0.9 vs. 1.1 ± 0.5, p = 0.001), and more perioperative complications. In contrast, among patients with IAP higher than 20mmHg, those who had decompresion via laparotomy (group B2) had comparable hospital stay (7.1 ± 5.1 vs. 8.5 ± 4.1, p = 0.57), a shorter PICU stay (3.0 ± 1.4 vs. 4.7 ± 1.3, p = 0.04) and lower mortality rate (7.1% vs. 50%, p = 0.04) than patients in group B1.Conclusions: The selection of appropriate surgical methods according to IAP and based on clinical diagnosis can relieve the pain of children, shorten hospital stay, and reduce the mortality rate.
In this paper, the structural optimization of high-rise guyed tower is carried out for the guyed wire and tower column schemes. The schemes are compared from the four guyed wires and eight guyed wires, the width of the tower column, the uniform cross-section tower column and the variable cross-section tower column, etc. And the single-column tower with eight guyed wires and variable cross-section is recommended for the high-rise guyed tower. Through the full-scale test study of the high-rise guyed tower, the safety of the high-rise guyed tower structural optimization and the feasibility of engineering application are verified. According to the technical and economic analysis of traditional self-supporting towers and high-rise guyed towers recommended in this paper, it can be seen that the weight and total cost of the high-rise guyed towers are 75.3% and 88.5% of the traditional self-supporting towers respectively, demonstrating the technical and economic advantages of the high-rise guyed towers. The advantages and disadvantages of high-rise guyed towers and self-supporting towers are summarized for reference in engineering design.
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