3 research outputs found
Comparison between catgut endoloop versus vicryl endoloop in laparoscopic appendicular stump closure
No full textBackground: Laparoscopic appendectomy has become the standard of care for acute appendicitis, offering numerous advantages over open surgery. The closure of the appendicular stump remains a critical step in this procedure, with various techniques available. This study aimed to compare the efficacy and outcomes of catgut versus vicryl endoloops in appendicular stump closure.
Methods: A prospective observational study was conducted at tertiary care hospitals in Mangalore from March 2022 to March 2024. Thirty-five patients undergoing laparoscopic appendectomy were included and divided into catgut (n=18) and vicryl (n=17) endoloop groups. Parameters evaluated included operative time, hospital stay duration, post-operative complications, and follow-up outcomes.
Results: The mean operative duration was comparable between groups (catgut: 1.2±0.4 hours, vicryl: 1.4±0.6 hours, p>0.05). The catgut group demonstrated significantly shorter hospital stays (3.0±0.8 versus 4.1±0.8 days, p<0.05). Post-operative complications were similar between groups, with pain being the most common (catgut: 50%, vicryl: 41.2%). Early oral intake was achieved in 60% of patients by post-operative day one. Follow-up showed good recovery in 71.4% of patients, with no reported cases of stump appendicitis among those who completed follow-up.
Conclusions: Both catgut and vicryl endoloops demonstrate comparable safety and efficacy in laparoscopic appendicular stump closure. While catgut endoloops showed advantages in hospital stay duration, both methods proved reliable with similar complication rates. The choice between materials can be based on surgeon preference and institutional protocols without compromising patient outcomes
Dynamic modeling of the heat pipe-assisted annealing line
No full textIn a conventional continuous annealing line, the energy supplied to steel strip during heating is not recovered while cooling it. Therefore, an alternative heat transfer technology for energy efficient continuous annealing of steel was developed. This technology enables reusing the heat extracted during cooling of the strip in the heating part of the process. This is achieved by thermally linking the cooling strip to the heating strip via multiple rotating heat pipes. In this context, the dynamic simulation of a full heat pipe assisted annealing line is performed. The dynamic simulation consists of the interaction of computational building blocks, each comprising of a rotating heat pipe and strip parts wrapped around the heat pipe. The simulations are run for different installation configurations and operational settings, with the heat pipe number varying between 50 and 100 and with varying strip line speed and dimensions. The heat pipes are sized to be 0.5 m in diameter and 3 m in length. The simulation results show that the equipment is capable of satisfying the thermal cycle requirements of annealing both at steady-state and during transition between steady-states following changes in boundary conditions. With this concept, energy savings of up to 70% are feasible.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Large Scale Energy StorageProcess and EnergyEnergy Technolog
