Publications by authors named "Andrew Siang-Yih Wong"

Background: It is known that many surgeons encounter intraoperative adverse events which can result in Second Victim Syndrome (SVS), with significant detriment to their emotional and physical health. There is, however, a paucity of Asian studies in this space. The present study thus aimed to explore the degree to which the experience of an adverse event is common among surgeons in Singapore, as well as its impact, and factors affecting their responses and perceived support systems.

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Background: Percentage excess weight loss (%EWL) and percentage total weight loss (%TWL) are used for reporting outcomes after bariatric surgery. However, they are not ideal for comparing outcomes on populations of varied initial body mass index (BMI). This study aimed to validate a recently introduced metric - percentage alterable weight loss (%AWL), after laparoscopic sleeve gastrectomy (LSG) and Roux-en-Y gastric bypass (LRYGB).

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Introduction: H. pylori eradication reduces the risk of gastric malignancies and peptic ulcer disease. First-line therapies include 14-day PAC (proton pump inhibitor [PPI], amoxicillin, clarithromycin) and PBMT (PPI, bismuth, metronidazole, tetracycline).

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Background: In addition to increased cardiovascular risk, patients with primary aldosteronism (PA) also suffer from impaired health-related quality of life (HRQoL) and psychological symptoms. We assessed for changes in HRQoL and depressive symptoms in a cohort of Asian patients with PA, after surgical and medical therapy.

Methods: Thirty-four patients with PA were prospectively recruited and completed questionnaires from 2017 to 2020.

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Objective: The aim of the study was to compare the clinical symptoms between Billroth II (B-II) and Roux-en-Y (R-Y) reconstruction after distal subtotal gastrectomy (DG) for gastric cancer.

Background: Surgery is the mainstay of curative treatment for gastric cancer. The technique for reconstruction after DG remains controversial.

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Background: The adoption of robot-assisted laparoscopic colorectal surgery has been hampered by issues with docking, operative duration, technical difficulties in multi-quadrant access, and cost. The da Vinci® Xi has been designed to overcome some of these limitations. We describe our experience with the system and offer technical insights to its application in left-sided colorectal procedures.

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Background: Although adhesions account for more than 70% of small bowel obstruction (SBO), they are thought to be less likely aetiologies in patients without previous abdominal surgery. Expedient surgery has historically been advocated as prudent management in these patients. Emerging evidence appears to challenge such a dogmatic approach.

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Introduction: Arterial base excess is an established marker of shock and predictor of survival in trauma patients. However, venous blood is more quickly and easily obtained. This study aimed to determine if venous base excess could replace arterial base excess as a marker in trauma patients at presentation and if venous base excess is predictive of survival at 24 hours and one week.

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Article Synopsis
  • The prevalence of hiatal hernias and para-oesophageal hernias (PEHs) is notably lower in Asian populations compared to Western populations, yet giant PEHs can lead to serious health issues.
  • During a 10-year study at Changi General Hospital in Singapore, ten patients underwent surgical repair for giant PEH or parahiatal hernia, with a mix of emergency and elective procedures, showing positive outcomes and no complications.
  • The findings suggest that giant PEHs and parahiatal hernias are often underdiagnosed in Asia, and emphasize the importance of early detection and planned surgical intervention to improve patient outcomes.
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Introduction: Natural orifice techniques have been developed to reduce incision-related morbidity in laparoscopic colorectal surgery. We describe our method of performing transanal specimen extraction in laparoscopic colorectal surgery, addressing bacteriological and oncological concerns in its implementation.

Methods: Data of consecutive patients undergoing natural orifice specimen extraction (NOSE) laparoscopic colorectal surgery in our institution were retrospectively analysed.

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Herein, we report a case of early in-stent occlusion due to the ingrowth of soft oedematous mucosal tissue through the lattices of an uncovered stent, which was used for palliation of a postoperative gastrojejunal anastomotic stricture. The in-stent occulsion was treated with the deployment of a second stent, which was covered, within the first stent. This led to successful resolution of the occlusion.

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We report a case of a primary parahiatal hernia that was repaired laparoscopically with a composite mesh. A 51-year-old woman presented with vomiting and epigastric pain. CT scan showed a giant paraesophageal hernia with intrathoracic gastric volvulus.

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Background: The acute abdomen accounts for up to 40% of all emergency surgical hospital admissions and a large proportion are secondary to gastrointestinal perforation. Studies have shown the superiority of the abdominal CT over upright chest radiographs in demonstrating free intraperitoneal air. Spontaneous perforated pyometra is a rare cause of the surgical acute abdomen with free intraperitoneal air.

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