The feasibility and safety of laparoscopic transcystic common bile duct exploration after prior gastrectomy.

The increased incidence of gallstones can be linked to previous gastrectomy (PG). However, the success rate of endoscopic retrograde cholangiopan-creatography after gastrectomy has significantly reduced. In such cases, laparoscopic transcystic common bile duct exploration (LTCBDE) may be an alternative.

Real-time fluorescence imaging with indocyanine green during laparoscopic duodenum-preserving pancreatic head resection.

Background: Laparoscopic duodenum-preserving pancreatic head resection (LDPPHR) is a surgical method used to treat benign and low-grade malignant pancreatic head tumors. This study aimed to determine the protective effect of common bile duct in LDPPHR using indocyanine green (ICG) fluorescence imaging.

Methods: A retrospective analysis of 30 patients treated with LDPPHR at the Second Affiliated Hospital of Nanchang University between January 2015 and November 2022 was performed.

Laparoscopic anatomical left hemihepatectomy guided by middle hepatic vein in the treatment of left hepatolithiasis with a history of upper abdominal surgery.

Background: This study aimed to investigate the safety and efficacy of laparoscopic anatomical left hemihepatectomy guided by the middle hepatic vein (MHV) for the treatment of patients with hepatolithiasis who had a history of upper abdominal surgery.

Methods: Retrospective data analysis was performed on patients who underwent laparoscopic left hepatectomy for hepatolithiasis and with previous upper abdominal surgery at the Second Affiliated Hospital of Nanchang University from January 2018 to April 2022. According to the different surgical approaches, patients were divided into laparoscopic anatomical left hepatectomy guided by the MHV group (MHV-AH group) and laparoscopic traditional anatomical left hepatectomy not guided by the MHV group (non-MHV-AH group).

Effect of different lymph node dissection methods on the number of lymph nodes detected and prognosis in gallbladder cancer.

At present, the extent of lymph node dissection (LND) for radical gallbladder cancer (GBC) is still controversial, and there is no evidence that LND improves prognosis, however, the latest guidelines for GBC recommend that removal of more than 6 lymph nodes facilitates staging of regional lymph nodes. The aim of this study is to investigate the effect of different LND methods on the number of lymph nodes detected and assess the prognostic factors during radical resection of GBC. This study retrospectively analyzed 133 patients (46 men and 87 women; average age: 64.

Comprehensive Analysis of NABP2 as a Prognostic Biomarker and Its Correlation with Immune Infiltration in Hepatocellular Carcinoma.

Background: The DNA binding protein NABP2 (nucleic acid binding protein 2) is a member of the SSB (single-stranded DNA-binding) protein family, which is involved in DNA damage repair. Its prognostic significance and relationship with immune infiltration in hepatocellular carcinoma (HCC), however, remain unknown.

Methods: The purpose of this study was to estimate the prognostic value of NABP2 and to investigate its possible immune function in HCC.

Laparoscopic Transcystic Common Bile Duct Exploration: 8-Year Experience at a Single Institution.

Background: Laparoscopic transcystic common bile duct exploration (LTCBDE) is used to treat cholecystolithiasis and choledocholithiasis. This study aimed to investigate the safety, effectiveness and generalisability of LTCBDE in patients with cholecystolithiasis and choledocholithiasis based on our LTCBDE experience within 8 years.

Methods: Four hundred patients with cholecystolithiasis and choledocholithiasis (including 62 of cholecystolithiasis and choledocholithiasis with common bile duct no-dilatation) treated with LTCBDE at a single centre from January 2014 to February 2022 were retrospectively evaluated.

Performances of Transcritical Power Cycles with CO-Based Mixtures for the Waste Heat Recovery of ICE.

In the waste heat recovery of the internal combustion engine (ICE), the transcritical CO power cycle still faces the high operation pressure and difficulty in condensation. To overcome these challenges, CO is mixed with organic fluids to form zeotropic mixtures. Thus, in this work, five organic fluids, namely R290, R600a, R600, R601a, and R601, are mixed with CO.

Mechanically Enabled Two-Axis Ultrasonic-Assisted System for Ultra-Precision Machining.

With the use of ultrasonic-assisted diamond cutting, an optical surface finish can be achieved on hardened steel or even brittle materials such as glass and infrared materials. The proposed ultrasonic vibration cutting system includes an ultrasonic generator, horn, transducer, cutting tool and the fixture. This study is focused on the design of the ultrasonic vibration cutting system with a high vibration frequency and an optimized amplitude for hard and brittle materials, particularly for moulded steel.

3D Printing of Metallic Microstructured Mould Using Selective Laser Melting for Injection Moulding of Plastic Microfluidic Devices.

A new method, a 3D printing technique, in particular, selective laser melting (SLM), has been used to fabricate moulds for the injection moulding of thermoplastic microfluidic chips that are suitable for prototyping and early stage scale-up. The micro metallic patterns are printed on to a pre-finished substrate to form a microstructured mould. The dimensional accuracy, surface morphology, bonding strength between the printed patterns and substrate, as well as the microstructure of micro features were all characterized.