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De Simone B, Chouillard E, Ramos AC, Donatelli G, Pintar T, Gupta R, Renzi F, Mahawar K, Madhok B, Maccatrozzo S, Abu-Zidan FM, Moore EE, Weber DG, Coccolini F, Di Saverio S, Kirkpatrick A, Shelat VG, Amico F, Pikoulis E, Ceresoli M, Galante JM, Wani I, De'Angelis N, Hecker A, Sganga G, Tan E, Balogh ZJ, Bala M, Coimbra R, Damaskos D, Ansaloni L, Sartelli M, Pararas N, Kluger Y, Chahine E, Agnoletti V, Fraga G, Biffl WL, Catena F. Correction: Operative management of acute abdomen after bariatric surgery in the emergency setting: the OBA guidelines. World J Emerg Surg 2022; 17:58. [PMID: 36344991 PMCID: PMC9641895 DOI: 10.1186/s13017-022-00460-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Elective surgery system strengthening: development, measurement, and validation of the surgical preparedness index across 1632 hospitals in 119 countries. Lancet 2022; 400:1607-1617. [PMID: 36328042 PMCID: PMC9621702 DOI: 10.1016/s0140-6736(22)01846-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 08/18/2022] [Accepted: 09/20/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND The 2015 Lancet Commission on global surgery identified surgery and anaesthesia as indispensable parts of holistic health-care systems. However, COVID-19 exposed the fragility of planned surgical services around the world, which have also been neglected in pandemic recovery planning. This study aimed to develop and validate a novel index to support local elective surgical system strengthening and address growing backlogs. METHODS First, we performed an international consultation through a four-stage consensus process to develop a multidomain index for hospital-level assessment (surgical preparedness index; SPI). Second, we measured surgical preparedness across a global network of hospitals in high-income countries (HICs), middle-income countries (MICs), and low-income countries (LICs) to explore the distribution of the SPI at national, subnational, and hospital levels. Finally, using COVID-19 as an example of an external system shock, we compared hospitals' SPI to their planned surgical volume ratio (SVR; ie, operations for which the decision for surgery was made before hospital admission), calculated as the ratio of the observed surgical volume over a 1-month assessment period between June 6 and Aug 5, 2021, against the expected surgical volume based on hospital administrative data from the same period in 2019 (ie, a pre-pandemic baseline). A linear mixed-effects regression model was used to determine the effect of increasing SPI score. FINDINGS In the first phase, from a longlist of 103 candidate indicators, 23 were prioritised as core indicators of elective surgical system preparedness by 69 clinicians (23 [33%] women; 46 [67%] men; 41 from HICs, 22 from MICs, and six from LICs) from 32 countries. The multidomain SPI included 11 indicators on facilities and consumables, two on staffing, two on prioritisation, and eight on systems. Hospitals were scored from 23 (least prepared) to 115 points (most prepared). In the second phase, surgical preparedness was measured in 1632 hospitals by 4714 clinicians from 119 countries. 745 (45·6%) of 1632 hospitals were in MICs or LICs. The mean SPI score was 84·5 (95% CI 84·1-84·9), which varied between HIC (88·5 [89·0-88·0]), MIC (81·8 [82·5-81·1]), and LIC (66·8 [64·9-68·7]) settings. In the third phase, 1217 (74·6%) hospitals did not maintain their expected SVR during the COVID-19 pandemic, of which 625 (51·4%) were from HIC, 538 (44·2%) from MIC, and 54 (4·4%) from LIC settings. In the mixed-effects model, a 10-point increase in SPI corresponded to a 3·6% (95% CI 3·0-4·1; p<0·0001) increase in SVR. This was consistent in HIC (4·8% [4·1-5·5]; p<0·0001), MIC (2·8 [2·0-3·7]; p<0·0001), and LIC (3·8 [1·3-6·7%]; p<0·0001) settings. INTERPRETATION The SPI contains 23 indicators that are globally applicable, relevant across different system stressors, vary at a subnational level, and are collectable by front-line teams. In the case study of COVID-19, a higher SPI was associated with an increased planned surgical volume ratio independent of country income status, COVID-19 burden, and hospital type. Hospitals should perform annual self-assessment of their surgical preparedness to identify areas that can be improved, create resilience in local surgical systems, and upscale capacity to address elective surgery backlogs. FUNDING National Institute for Health Research (NIHR) Global Health Research Unit on Global Surgery, NIHR Academy, Association of Coloproctology of Great Britain and Ireland, Bowel Research UK, British Association of Surgical Oncology, British Gynaecological Cancer Society, and Medtronic.
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Cheng AL, Lee Juin Hsien B, Shelat VG. Letter to the Editor: Epstein-Barr Virus-Associated Liver Smooth Muscle Tumor Treated by Radiofrequency Ablation. Surg Infect (Larchmt) 2022; 23:858-859. [PMID: 35925770 DOI: 10.1089/sur.2022.221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
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Lyu Q, Lin D, Tang M, Liu D, Zhang J, Wang Y, Shelat VG, Raissi D, Ostwal V, Chen X, Li S. 18F-FDG PET/CT and MR imaging features of liver metastases in gastrointestinal stromal tumors: a cross-sectional analysis. ANNALS OF TRANSLATIONAL MEDICINE 2022; 10:1220. [PMID: 36544642 PMCID: PMC9761173 DOI: 10.21037/atm-22-5181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 11/09/2022] [Indexed: 11/23/2022]
Abstract
BACKGROUND Early detection of gastrointestinal stromal tumor (GIST) liver metastases is crucial for the management and prognosis. In our experience, GIST liver metastases can display hypermetabolism on 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) and marked enhancement on magnetic resonance imaging (MRI), which are uncommon in other tumors before treatment. Most literature focus on the imaging evaluation, prognosis after treatment and less is known about imaging features on both imaging methods before treatment. This study analyzes the imaging features of newly diagnosed GIST liver metastases on 18F-FDG PET/CT and MRI, with goal of improving diagnostic accuracy. METHODS This retrospective study included 55 patients with pathological or radiographical confirmed GIST liver metastases who underwent PET/CT (n=29), MRI (n=22), or both methods (n=4). PET/CT and MRI interpretation including lesion's morphologic features, number, density or signal intensity, hemorrhage, cystic changes or necrosis, maximum standardized uptake value (SUVmax) of liver metastases and liver background on PET imaging, degree and pattern of enhancement on MRI were obtained by two experienced nuclear medicine physicians and two radiologists respectively. Data are presented as numbers, percentages, means ± standard deviations or median (interquartile range). The correlation between diameter and SUVmax of metastases, and primary tumor SUVmax and synchronous liver metastases SUVmax were analyzed by Spearman's rank test. RESULTS On PET/CT visual analysis, 38.9%, 23.9%, and 37.2% of lesions showed significant hypermetabolism, slightly higher metabolism, and equal or lower metabolism than liver, respectively. There was a weak correlation between the diameter and SUVmax of liver metastases (rs =0.370, P<0.001), and a moderate correlation between SUVmax of synchronous liver metastases and the primary tumors (rs =0.492, P<0.001). On contrast-enhanced MRI, 90.8% of lesions showed heterogeneous enhancement in the arterial phase with the variable presentation, and 74.3% had different enhancement patterns between margins and intratumoral parenchyma. CONCLUSIONS Liver lesions in GIST displaying significant, slight hypermetabolism on 18F-FDG PET/CT, marked or heterogeneous gradual enhancement within the intratumoral parenchyma with ring-like enhancement on MRI may denote the diagnosis of liver metastasis. However, GIST liver metastases may also display equal or lower metabolism than liver parenchyma on PET, making small lesions more difficult to diagnose.
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Chan KS, Shelat VG, Chia FLA. Psychological impact of the COVID-19 pandemic on training of postgraduate year 1 doctors in Singapore. Singapore Med J 2022; 63:691-694. [PMID: 33866707 PMCID: PMC9815167 DOI: 10.11622/smedj.2021032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Bala M, Catena F, Kashuk J, De Simone B, Gomes CA, Weber D, Sartelli M, Coccolini F, Kluger Y, Abu-Zidan FM, Picetti E, Ansaloni L, Augustin G, Biffl WL, Ceresoli M, Chiara O, Chiarugi M, Coimbra R, Cui Y, Damaskos D, Di Saverio S, Galante JM, Khokha V, Kirkpatrick AW, Inaba K, Leppäniemi A, Litvin A, Peitzman AB, Shelat VG, Sugrue M, Tolonen M, Rizoli S, Sall I, Beka SG, Di Carlo I, Ten Broek R, Mircea C, Tebala G, Pisano M, van Goor H, Maier RV, Jeekel H, Civil I, Hecker A, Tan E, Soreide K, Lee MJ, Wani I, Bonavina L, Malangoni MA, Koike K, Velmahos GC, Fraga GP, Fette A, de'Angelis N, Balogh ZJ, Scalea TM, Sganga G, Kelly MD, Khan J, Stahel PF, Moore EE. Acute mesenteric ischemia: updated guidelines of the World Society of Emergency Surgery. World J Emerg Surg 2022; 17:54. [PMID: 36261857 PMCID: PMC9580452 DOI: 10.1186/s13017-022-00443-x] [Citation(s) in RCA: 69] [Impact Index Per Article: 34.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Accepted: 06/17/2022] [Indexed: 02/08/2023] Open
Abstract
Acute mesenteric ischemia (AMI) is a group of diseases characterized by an interruption of the blood supply to varying portions of the intestine, leading to ischemia and secondary inflammatory changes. If untreated, this process may progress to life-threatening intestinal necrosis. The incidence is low, estimated at 0.09-0.2% of all acute surgical admissions, but increases with age. Although the entity is an uncommon cause of abdominal pain, diligence is required because if untreated, mortality remains in the range of 50%. Early diagnosis and timely surgical intervention are the cornerstones of modern treatment to reduce the high mortality associated with this entity. The advent of endovascular approaches in parallel with modern imaging techniques is evolving and provides new treatment options. Lastly, a focused multidisciplinary approach based on early diagnosis and individualized treatment is essential. Thus, we believe that updated guidelines from World Society of Emergency Surgery are warranted, in order to provide the most recent and practical recommendations for diagnosis and treatment of AMI.
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Tan EWK, Shelat VG, Monteiro AY, Low JK. Spontaneous retroperitoneal haemorrhage from pancreatoduodenal artery (PDA) rupture and associated complications. BMJ Case Rep 2022; 15:15/10/e250383. [PMID: 36253011 PMCID: PMC9577903 DOI: 10.1136/bcr-2022-250383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Spontaneous retroperitoneal haemorrhage (SRH) is rare. It may present with abdominal or back pain with or without haemodynamic instability. Aggressive resuscitation while investigating the cause of bleeding and providing haemostasis are the standard of care. Subsequent close monitoring is necessary to identify early complications.This study reports three patients who presented to our institution within the last 5 years with SRH from a ruptured pancreaticoduodenal artery (PDA) aneurysm. Each patient had a unique presentation, complications and treatment demonstrating the variability and complexity of SRH. One patient presented with sudden abdominal pain and hypovolaemic shock, underwent angioembolisation and had an eventful recovery. Another patient presented similarly and was treated via angioembolisation but experienced gastric outlet obstruction and obstructive jaundice requiring surgical haematoma evacuation. Another patient had an incidental finding of haemoperitoneum during laparoscopic cholecystectomy that was subsequently diagnosed as SRH resulting from a PDA aneurysm rupture secondary to medial arcuate ligament syndrome.
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Lee BJH, Yap QV, Low JK, Chan YH, Shelat VG. Cholecystectomy for asymptomatic gallstones: Markov decision tree analysis. World J Clin Cases 2022; 10:10399-10412. [PMID: 36312509 PMCID: PMC9602237 DOI: 10.12998/wjcc.v10.i29.10399] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Revised: 05/13/2022] [Accepted: 09/01/2022] [Indexed: 02/05/2023] Open
Abstract
Gallstones are a common public health problem, especially in developed countries. There are an increasing number of patients who are diagnosed with gallstones due to increasing awareness and liberal use of imaging, with 22.6%-80% of gallstone patients being asymptomatic at the time of diagnosis. Despite being asymptomatic, this group of patients are still at life-long risk of developing symptoms and complications such as acute cholangitis and acute biliary pancreatitis. Hence, while early prophylactic cholecystectomy may have some benefits in selected groups of patients, the current standard practice is to recommend cholecystectomy only after symptoms or complications occur. After reviewing the current evidence about the natural course of asymptomatic gallstones, complications of cholecystectomy, quality of life outcomes, and economic outcomes, we recommend that the option of cholecystectomy should be discussed with all asymptomatic gallstone patients. Disclosure of material information is essential for patients to make an informed choice for prophylactic cholecystectomy. It is for the patient to decide on watchful waiting or prophylactic cholecystectomy, and not for the medical community to make a blanket policy of watchful waiting for asymptomatic gallstone patients. For patients with high-risk profiles, it is clinically justifiable to advocate cholecystectomy to minimize the likelihood of morbidity due to complications.
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Shelat VG. Letter to the Editor: Extraintestinal Clostridioides difficile Abscess after Synchronous Colon and Liver Resection. Surg Infect (Larchmt) 2022; 23:763-764. [PMID: 35766937 DOI: 10.1089/sur.2022.194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
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Chan KS, Junnarkar SP, Low JK, Huey CWT, Shelat VG. Aging is Associated with Prolonged Hospitalisation Stay in Pyogenic Liver Abscess-A 1:1 Propensity Score Matched Study in Elderly Versus Non-Elderly Patients. Malays J Med Sci 2022; 29:59-73. [PMID: 36474543 PMCID: PMC9680999 DOI: 10.21315/mjms2022.29.5.7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 03/03/2022] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Mortality of pyogenic liver abscess (PLA) is high ranging 10%-40%. Old age predicts outcomes in many diseases but there is paucity of data on PLA outcomes. We aim to compare the morbidity and mortality between elderly and non-elderly in PLA. METHODS This is a retrospective study from 2007-2011 comparing elderly (≥ 65 years old) and non-elderly (< 65 years old) with PLA. A 1:1 propensity score matching (PSM) was performed. Baseline clinical profile and outcomes were compared. RESULTS There were 213 patients (elderly patients = 90 [42.3%], non-elderly patients = 123 [57.7%]). Overall median age is 62 (interquartile range [IQR] = 53-74) years old. PSM resulted in 102 patients (51 per arm). Length of hospitalisation stay (LOS) was significantly longer in elderly patients in both unmatched (16 [IQR = 10-24.5] versus 11 [IQR = 8-19] days; P < 0.001) and matched cohorts (17 [IQR = 13-27] versus 11 [IQR = 7-19] days; P = 0.001). In-hospital mortality was significantly higher in elderly patients in the unmatched cohort (elderly patients = 21.1%, non-elderly patients = 7.3%; P = 0.003) but was insignificant following PSM (elderly patients = 15.7%, non-elderly patients = 9.8%; P = 0.219). Duration of antibiotic therapy and need for percutaneous drainage (PD) were comparable before and after PSM. CONCLUSION Age ≥ 65 years old is associated with longer LOS. In-hospital mortality though higher in elderly patients, was not statistically significant.
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De Simone B, Chouillard E, Ramos AC, Donatelli G, Pintar T, Gupta R, Renzi F, Mahawar K, Madhok B, Maccatrozzo S, Abu-Zidan FM, E Moore E, Weber DG, Coccolini F, Di Saverio S, Kirkpatrick A, Shelat VG, Amico F, Pikoulis E, Ceresoli M, Galante JM, Wani I, De' Angelis N, Hecker A, Sganga G, Tan E, Balogh ZJ, Bala M, Coimbra R, Damaskos D, Ansaloni L, Sartelli M, Pararas N, Kluger Y, Chahine E, Agnoletti V, Fraga G, Biffl WL, Catena F. Operative management of acute abdomen after bariatric surgery in the emergency setting: the OBA guidelines. World J Emerg Surg 2022; 17:51. [PMID: 36167572 PMCID: PMC9516804 DOI: 10.1186/s13017-022-00452-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 08/16/2022] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Patients presenting with acute abdominal pain that occurs after months or years following bariatric surgery may present for assessment and management in the local emergency units. Due to the large variety of surgical bariatric techniques, emergency surgeons have to be aware of the main functional outcomes and long-term surgical complications following the most performed bariatric surgical procedures. The purpose of these evidence-based guidelines is to present a consensus position from members of the WSES in collaboration with IFSO bariatric experienced surgeons, on the management of acute abdomen after bariatric surgery focusing on long-term complications in patients who have undergone laparoscopic sleeve gastrectomy and laparoscopic Roux-en-Y gastric bypass. METHOD A working group of experienced general, acute care, and bariatric surgeons was created to carry out a systematic review of the literature following the Preferred Reporting Items for Systematic Review and Meta-analysis Protocols (PRISMA-P) and to answer the PICO questions formulated after the Operative management in bariatric acute abdomen survey. The literature search was limited to late/long-term complications following laparoscopic sleeve gastrectomy and laparoscopic Roux-en-Y gastric bypass. CONCLUSIONS The acute abdomen after bariatric surgery is a common cause of admission in emergency departments. Knowledge of the most common late/long-term complications (> 4 weeks after surgical procedure) following sleeve gastrectomy and Roux-en-Y gastric bypass and their anatomy leads to a focused management in the emergency setting with good outcomes and decreased morbidity and mortality rates. A close collaboration between emergency surgeons, radiologists, endoscopists, and anesthesiologists is mandatory in the management of this group of patients in the emergency setting.
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Chen S, Smith H, Bartlam B, Low-Beer N, Chow A, Rosby LV, Shelat VG, Cleland J. Role of social comparison in preparedness for practice as a junior doctor in Singapore: a longitudinal qualitative study. BMJ Open 2022; 12:e061569. [PMID: 36691130 PMCID: PMC9454008 DOI: 10.1136/bmjopen-2022-061569] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 08/20/2022] [Indexed: 01/26/2023] [Imported: 07/18/2023] Open
Abstract
OBJECTIVES To date, most research on medical graduates' preparedness for practice has conceptualised preparedness as something possessed by the individual. However, new doctors work within social settings with other people and, given this, we argue that preparedness has a social and comparative dimension. The aim of this paper is to explore medical students'/graduates' self-assessments of their preparedness for practice using the lens of social comparison theory. SETTING We invited medical students from one of Singapore's three medical schools who were in their final-year Student Assistantship Programme to participate in semi-structured interviews, and follow-up interviews 6 months later when they were working as junior doctors. Data was collected from two cohorts, in 2018 and 2019. Initial analysis of interview transcripts was inductive and thematic. Social comparison theory was used for subsequent theory-driven analysis. PARTICIPANTS 31 participants took part, of whom 21 also engaged in follow-up interviews. RESULTS We identified three uses of social comparison: as coping strategy to manage uncertainties in transitions where there was no formal, objective testing of their performance; as a means to confirm their self-perceived preparedness (upwards or downwards, eg, being better or worse prepared than comparator others); and as the basis for decision-making (eg, changing career choices). CONCLUSIONS Senior medical students and newly-graduated doctors compare themselves with peers and near-peers in terms of prior learning and current performance to evaluate and understand their own performance at work. Future studies need to examine further how the feeling of preparedness or unpreparedness generated from social comparisons may affect subsequent clinical performance and professional development.
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Obstacles for T-lymphocytes in the tumour microenvironment: Therapeutic challenges, advances and opportunities beyond immune checkpoint. EBioMedicine 2022; 83:104216. [PMID: 35986950 PMCID: PMC9403334 DOI: 10.1016/j.ebiom.2022.104216] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 07/25/2022] [Accepted: 07/28/2022] [Indexed: 02/08/2023] Open
Abstract
The tumour microenvironment (TME) imposes a major obstacle to infiltrating T-lymphocytes and suppresses their function. Several immune checkpoint proteins that interfere with ligand/receptor interactions and impede T-cell anti-tumour responses have been identified. Immunotherapies that block immune checkpoints have revolutionized the treatment paradigm for many patients with advanced-stage tumours. However, metabolic constraints and soluble factors that exist within the TME exacerbate the functional exhaustion of tumour-infiltrating T-cells. Here we review these multifactorial constraints and mechanisms – elevated immunosuppressive metabolites and enzymes, nutrient insufficiency, hypoxia, increased acidity, immense amounts of extracellular ATP and adenosine, dysregulated bioenergetic and purinergic signalling, and ionic imbalance - that operate in the TME and collectively suppress T-cell function. We discuss how scientific advances could help overcome the complex TME obstacles for tumour-infiltrating T-lymphocytes, aiming to stimulate further research for developing new therapeutic strategies by harnessing the full potential of the immune system in combating cancer.
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Chan KS, Mohan S, Shelat VG. Outcomes of patients with post-hepatectomy hypophosphatemia: A narrative review. World J Hepatol 2022; 14:1550-1561. [PMID: 36157866 PMCID: PMC9453469 DOI: 10.4254/wjh.v14.i8.1550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 05/31/2022] [Accepted: 07/31/2022] [Indexed: 02/06/2023] Open
Abstract
Phosphate is an essential electrolyte for proper mineralisation of bone, buffering of urine, and diverse cellular actions. Hypophosphatemia (HP) is a clinical spectrum which range from asymptomatic to severe complications such as neuromuscular and pulmonary complications, or even death. Post-hepatectomy HP (PHH) has been reported to be 55.5%-100%. Post-hepatectomy, there is rapid uptake of phosphate and increased mitotic counts to aid in regeneration of residual liver. Concurrently, PHH may be due to increased urinary phosphorous from activation of matrix extracellular phosphoglycoprotein in the injured liver, which decreases phosphate influx into hepatocytes to sustain adenosine triphosphate synthesis. A literature review was performed on PubMed till January 2022. We included 8 studies which reported on impact of PHH on post-operative outcomes. In patients with diseased liver, PHH was reported to have either beneficial or deleterious effects on post-hepatectomy liver failure (PHLF), morbidity and/or mortality in various cohorts. In living donor hepatectomy, PHLF was higher in PHH. Benefits of correction of PHH with reduced post-operative complications have been shown. Correction of PHH should be done based on extent of PHH. Existing studies were however heterogenous; further studies should be conducted to assess PHH on post-operative outcomes with standardized phosphate replacement regimes.
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Chan KS, Chia CTW, Shelat VG. Demographics, Radiological Findings, and Clinical Outcomes of Klebsiella pneumonia vs. Non- Klebsiella pneumoniae Pyogenic Liver Abscess: A Systematic Review and Meta-Analysis with Trial Sequential Analysis. Pathogens 2022; 11:pathogens11090976. [PMID: 36145408 PMCID: PMC9505935 DOI: 10.3390/pathogens11090976] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/21/2022] [Accepted: 08/25/2022] [Indexed: 02/05/2023] Open
Abstract
Pyogenic liver abscess (PLA) is a common cause of hepatobiliary sepsis. Klebsiella pneumoniae (KP) is the most common organism causing PLA. Evidence is scarce on the demographics, radiological findings, and outcomes of KPPLA versus non-KPPLA (N-KPPLA). PubMed, Embase, The Cochrane Library, and Scopus were systematically searched until 14 May 2022 for studies comparing KPPLA and N-KPPLA. Exclusion criteria were single-arm studies. Primary outcomes were mortality (30-day/in-hospital) and metastatic complications. There were 16 studies, including 5127 patients (KPPLA n = 3305, N-KPPLA n = 1822). Patients with KPPLA were younger (mean difference: −2.04 years, p = 0.02). History of hepatobiliary disease (Odds ratio (OR) 0.30, 95% CI: 0.20, 0.46) and malignancy (OR 0.26, 95% CI: 0.16, 0.42) were less common in KPPLA. KPPLA was associated with lower incidence of multiple abscesses (OR 0.52, 95% CI: 0.35, 0.76, p < 0.001) and bilobar abscesses (OR 0.60, 95% CI: 0.49, 0.74, p < 0.001). KPPLA has higher overall metastatic complications (KPPLA 9.7% vs. N-KPPLA 4.8%, OR 3.16, 95% CI: 2.00, 4.99, p < 0.001), but lower mortality (KPPLA 3.9% vs. N-KPPLA 7.6%, OR 0.51, 95% CI: 0.34, 0.78, p < 0.001). Trial sequential analysis showed conclusive evidence that KPPLA has lower mortality than N-KPPLA. In conclusion, KPPLA has lower mortality than N-KPPLA.
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Cobianchi L, Dal Mas F, Massaro M, Biffl W, Catena F, Coccolini F, Dionigi B, Dionigi P, Di Saverio S, Fugazzola P, Kluger Y, Leppäniemi A, Moore EE, Sartelli M, Velmahos G, Woltz S, Angelos P, Ansaloni L. Diversity and ethics in trauma and acute care surgery teams: results from an international survey. World J Emerg Surg 2022; 17:44. [PMID: 35948947 PMCID: PMC9364511 DOI: 10.1186/s13017-022-00446-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 07/11/2022] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Investigating the context of trauma and acute care surgery, the article aims at understanding the factors that can enhance some ethical aspects, namely the importance of patient consent, the perceptiveness of the ethical role of the trauma leader, and the perceived importance of ethics as an educational subject. METHODS The article employs an international questionnaire promoted by the World Society of Emergency Surgery. RESULTS Through the analysis of 402 fully filled questionnaires by surgeons from 72 different countries, the three main ethical topics are investigated through the lens of gender, membership of an academic or non-academic institution, an official trauma team, and a diverse group. In general terms, results highlight greater attention paid by surgeons belonging to academic institutions, official trauma teams, and diverse groups. CONCLUSIONS Our results underline that some organizational factors (e.g., the fact that the team belongs to a university context or is more diverse) might lead to the development of a higher sensibility on ethical matters. Embracing cultural diversity forces trauma teams to deal with different mindsets. Organizations should, therefore, consider those elements in defining their organizational procedures. LEVEL OF EVIDENCE Trauma and acute care teams work under tremendous pressure and complex circumstances, with their members needing to make ethical decisions quickly. The international survey allowed to shed light on how team assembly decisions might represent an opportunity to coordinate team member actions and increase performance.
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Phoa S, Chan KS, Lim SH, Oo AM, Shelat VG. Comparison of glue versus suture mesh fixation for primary open inguinal hernia mesh repair by Lichtenstein technique: a systematic review and meta-analysis. Hernia 2022; 26:1105-1120. [PMID: 35113292 DOI: 10.1007/s10029-022-02571-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 01/13/2022] [Indexed: 02/05/2023]
Abstract
BACKGROUND The use of glue as a mesh fixator in open Lichtenstein inguinal hernia repair (IHR) has gained popularity to reduce recurrence and postoperative complications. This meta-analysis aims to provide an up-to-date review to compare glue versus suture fixation in primary open Lichtenstein IHR. METHODS PubMed, Embase, The Cochrane Library, Web of Science, and Springer were systematically searched till June 2021 for randomized controlled trials (RCTs) comparing glue versus suture fixation in open Lichtenstein IHR. Primary outcomes were early (at 1 year) and late recurrence (5 years or more). Secondary outcomes were the length of operation, postoperative haematoma and seroma, and chronic pain at 1 year. RESULTS A total of 17 RCTs with 3150 hernias (glue n = 1582, suture n = 1568) were included. Only three studies reported late recurrence. Glue fixation was associated with shorter operative duration (MD - 4.17, 95% CI - 4.82, - 3.52; p < 0.001 and a lower incidence of haematoma formation (OR 0.51, 95% CI 0.32, 0.81; p = 0.004). There was no significant difference in postoperative seroma (OR 0.72, 95% CI 0.35, 1.49; p = 0.38), chronic pain after 1 year (OR 1.10, 95% CI 0.73, 1.65; p = 0.65), early recurrence (OR 1.11, 95% CI 0.45, 2.76; p = 0.81, I2 = 0%), and late recurrence (OR 1.23, 95% CI 0.59, 2.59; p = 0.59, I2 = 0%). CONCLUSION Early and late recurrence were comparable between glue and suture fixation in open Lichtenstein IHR patients. Glue fixation had shorter operating time and lower haematoma formation than suture fixation. Chronic pain and seroma formation were comparable. More RCTs should report long-term outcomes.
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Goh SSN, Shelat V. Prednisolone induced pneumatosis coli and pneumoperitoneum. World J Gastroenterol 2022; 28:3739-3742. [PMID: 36161037 PMCID: PMC9372814 DOI: 10.3748/wjg.v28.i28.3739] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 05/04/2022] [Accepted: 07/11/2022] [Indexed: 02/06/2023] Open
Abstract
Pneumatosis intestinalis (PI) is defined as the presence of gas within the submucosal or subserosal layer of the gastrointestinal tract. It is a radiologic sign suspicious for bowel ischemia, hence non-viable bowel must be ruled out in patients with PI. However, up to 15% of cases with PI are not associated with bowel ischemia or acute abdomen. We described an asymptomatic patient with prednisolone-induced PI and modified the Naranjo score to aid in a surgeon’s decision-making for emergency laparotomy vs non-operative management with serial assessment in patients who are immunocompromised due to long-term steroid use.
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Coccolini F, Sartelli M, Kluger Y, Osipov A, Cui Y, Beka SG, Kirkpatrick A, Sall I, Moore EE, Biffl WL, Litvin A, Pisano M, Magnone S, Picetti E, de Angelis N, Stahel P, Ansaloni L, Tan E, Abu-Zidan F, Ceresoli M, Hecker A, Chiara O, Sganga G, Khokha V, di Saverio S, Sakakushev B, Campanelli G, Fraga G, Wani I, Broek RT, Cicuttin E, Cremonini C, Tartaglia D, Soreide K, Galante J, de Moya M, Koike K, De Simone B, Balogh Z, Amico F, Shelat V, Pikoulis E, Di Carlo I, Bonavina L, Leppaniemi A, Marzi I, Ivatury R, Khan J, Maier RV, Hardcastle TC, Isik A, Podda M, Tolonen M, Rasa K, Navsaria PH, Demetrashvili Z, Tarasconi A, Carcoforo P, Sibilla MG, Baiocchi GL, Pararas N, Weber D, Chiarugi M, Catena F. The LIFE TRIAD of emergency general surgery. World J Emerg Surg 2022; 17:41. [PMID: 35879801 PMCID: PMC9317062 DOI: 10.1186/s13017-022-00447-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 06/17/2022] [Indexed: 02/08/2023] Open
Abstract
Emergency General Surgery (EGS) was identified as multidisciplinary surgery performed for traumatic and non-traumatic acute conditions during the same admission in the hospital by general emergency surgeons and other specialists. It is the most diffused surgical discipline in the world. To live and grow strong EGS necessitates three fundamental parts: emergency and elective continuous surgical practice, evidence generation through clinical registries and data accrual, and indications and guidelines production: the LIFE TRIAD.
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Reichert M, Sartelli M, Weigand MA, Hecker M, Oppelt PU, Noll J, Askevold IH, Liese J, Padberg W, Coccolini F, Catena F, Hecker A. Correction to: Two years later: Is the SARS-CoV-2 pandemic still having an impact on emergency surgery? An international cross-sectional survey among WSES members. World J Emerg Surg 2022; 17:39. [PMID: 35804425 PMCID: PMC9270731 DOI: 10.1186/s13017-022-00442-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/30/2022] [Indexed: 02/08/2023] Open
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Chan KS, Shelat VG. Klebsiella pneumoniae Bacteremia is Associated with Higher Mortality in Acute Calculous Cholangitis as Compared to Escherichia coli Bacteremia. World J Surg 2022; 46:1678-1685. [PMID: 35419623 DOI: 10.1007/s00268-022-06559-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/25/2022] [Indexed: 02/05/2023]
Abstract
BACKGROUND Acute cholangitis (AC) is a potentially life-threatening infection involving the biliary system. The two commonest bacteria involved are Escherichia coli (EC) followed by Klebsiella pneumoniae (KP). Microbiology is a prognostic factor for several pathologies but not for AC. We aim to investigate clinical outcomes between KP bacteremia vs. EC bacteremia in AC. METHODS This is a retrospective cohort study of patients diagnosed with calculous AC (January-December 2016). Study outcomes include the length of hospitalization stay, in-hospital mortality, 30-day, and 90-day mortality. Univariate and multivariate logistic regression was used to establish correlations. RESULTS We included 141 patients (KP (n = 29), EC (n = 112)) with overall median age of 82.2 and similar gender distribution. Most patients had Grade II AC (n = 59, 41.8%). Patient demographics were comparable. KP bacteremia had lower median platelet count (KP:168 × 109/L vs. EC:200 × 109/L; p = 0.025). Overall 30-day and 90-day mortality were 9.2 and 10.6%, respectively. Multivariate analysis showed KP bacteremia had higher 30-day (Odds ratio (OR) 6.09, (95% Confidence Interval (CI):1.27-29.10), p = 0.024) and 90-day mortality (OR 6.10, 95% CI: 1.39-26.76, p = 0.017). The length of hospitalization stay was comparable. Subgroup analysis of endoscopic retrograde cholangiopancreatogram patients showed comparable outcomes. CONCLUSION KP bacteremia is associated with lower platelet count and higher 30-day and 90-day mortality than EC. More studies are required to establish if inferior outcomes of KP bacteremia are associated with antimicrobial resistance.
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Tan M, Low HM, Shelat V, Tan CH. Imaging patterns in non-traumatic spleen lesions in adults-a review. Jpn J Radiol 2022; 40:664-677. [PMID: 35099683 DOI: 10.1007/s11604-022-01250-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Accepted: 01/17/2022] [Indexed: 02/05/2023]
Abstract
The spleen is a complex organ involved in multiple physiological processes in the human body. Elective splenectomy is an uncommon operation, and the precise characterization of the lesion should be achieved to determine the risks and benefits of this operation accurately. Given the significant role of the spleen in homeostasis and the potential risks of the surgery itself and following sequelae such as infection susceptibility, accurate recognition, and classification of splenic lesions is required before surgery. This review provides an overview of malignant (e.g., lymphoma, angiosarcoma) and benign (e.g., cysts, hemangioma, hamartoma) splenic lesions that may warrant an elective splenectomy. Images from a cohort of adult patients undergoing isolated splenectomy for non-traumatic indications in a single center are provided. This review highlights the considerable overlap in imaging patterns between splenic lesions, splenic lesions masquerading as lesions in other organs, increased detection of asymptomatic splenic incidentalomas due to improvements in imaging modalities. This review also provides clinical correlations for each lesion, providing additional information to help clinicians differentiate between lesions and accurately identify diseases amenable to surgical management.
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Chan KS, Kwan JR, Shelat VG. Awareness, perception, knowledge, and attitude toward robotic surgery in a general surgical outpatient clinic in Singapore, Asia. J Clin Transl Res 2022; 8:224-233. [PMID: 35813899 PMCID: PMC9260340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 04/29/2022] [Accepted: 05/01/2022] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND AND AIM Robotic surgery is an advancing technology and patients may not be fully aware of these advancements. Social media and advertisements may falsely skew patients' understanding. This study aims to seek awareness, understanding. and attitude toward robotic surgery in Singapore. MATERIALS AND METHODS A cross-sectional study of 472 patients and/or their relatives (response rate 94.4%) in a specialist outpatient clinic chosen through convenience sampling from May to July 2017 was performed. All healthcare workers or participants <21 years of age were excluded. A 19-point survey questionnaire including patient sociodemographics and awareness and attitudes toward robotic surgery was administered. Univariate and multivariate analysis was performed to assess participants' preference for robotic surgery. RESULTS Two hundred and sixty (55.1%) of the participants were female and the majority were aged 21-40 years old (55.5%). 250 participants (53.0%) reported having heard of robotic surgery; majority (n=205, 82.0%) were from the media. Two hundred and six (43.6%) participants had the misconception that robotic surgery involved an automated robot. Multivariate analysis showed that perception that robotic surgery yielded better results was independently associated with preference for robotic surgery (prefers robotic surgery: n=56/159 (35.2%), do not prefer robotic surgery: n=81/313 (25.9%), odds ratio (OR) 1.61, 95% confidence interval (CI): 1.06-2.45, P=0.026). Having concerns that wrong surgery may be performed by robotic surgery were also independently associated with disinclination toward robotic surgery (OR 0.51 [95% CI: 0.35-0.76], P=0.001). CONCLUSION Understanding of robotic surgery was poor with several misconceptions. It is paramount to clarify these misconceptions to advocate for informed decision-making. RELEVANCE FOR PATIENTS Measures need to be taken to ensure adequacy of pre-operative counseling in patients undergoing robotic surgery. Misconceptions on benefits and risks of robotic surgery should be cleared before decision on the surgical access and approach.
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Reichert M, Sartelli M, Weigand MA, Hecker M, Oppelt PU, Noll J, Askevold IH, Liese J, Padberg W, Coccolini F, Catena F, Hecker A. Two years later: Is the SARS-CoV-2 pandemic still having an impact on emergency surgery? An international cross-sectional survey among WSES members. World J Emerg Surg 2022; 17:34. [PMID: 35710386 PMCID: PMC9202986 DOI: 10.1186/s13017-022-00424-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 04/15/2022] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND The SARS-CoV-2 pandemic is still ongoing and a major challenge for health care services worldwide. In the first WSES COVID-19 emergency surgery survey, a strong negative impact on emergency surgery (ES) had been described already early in the pandemic situation. However, the knowledge is limited about current effects of the pandemic on patient flow through emergency rooms, daily routine and decision making in ES as well as their changes over time during the last two pandemic years. This second WSES COVID-19 emergency surgery survey investigates the impact of the SARS-CoV-2 pandemic on ES during the course of the pandemic. METHODS A web survey had been distributed to medical specialists in ES during a four-week period from January 2022, investigating the impact of the pandemic on patients and septic diseases both requiring ES, structural problems due to the pandemic and time-to-intervention in ES routine. RESULTS 367 collaborators from 59 countries responded to the survey. The majority indicated that the pandemic still significantly impacts on treatment and outcome of surgical emergency patients (83.1% and 78.5%, respectively). As reasons, the collaborators reported decreased case load in ES (44.7%), but patients presenting with more prolonged and severe diseases, especially concerning perforated appendicitis (62.1%) and diverticulitis (57.5%). Otherwise, approximately 50% of the participants still observe a delay in time-to-intervention in ES compared with the situation before the pandemic. Relevant causes leading to enlarged time-to-intervention in ES during the pandemic are persistent problems with in-hospital logistics, lacks in medical staff as well as operating room and intensive care capacities during the pandemic. This leads not only to the need for triage or transferring of ES patients to other hospitals, reported by 64.0% and 48.8% of the collaborators, respectively, but also to paradigm shifts in treatment modalities to non-operative approaches reported by 67.3% of the participants, especially in uncomplicated appendicitis, cholecystitis and multiple-recurrent diverticulitis. CONCLUSIONS The SARS-CoV-2 pandemic still significantly impacts on care and outcome of patients in ES. Well-known problems with in-hospital logistics are not sufficiently resolved by now; however, medical staff shortages and reduced capacities have been dramatically aggravated over last two pandemic years.
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Chua BQY, Chong VWS, Teng TZJ, Chia CTW, Aung MO, Shelat VG. Does technology-enhanced communication improve Helicobacter pylori eradication outcomes?-A meta-analysis. Helicobacter 2022; 27:e12890. [PMID: 35363943 DOI: 10.1111/hel.12890] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 03/15/2022] [Accepted: 03/17/2022] [Indexed: 02/06/2023]
Abstract
BACKGROUND Helicobacter pylori (H. pylori) is a highly prevalent organism that can induce an inflammatory state in the upper gastrointestinal tract and lead to complications such as peptic ulcer and gastric cancer. The treatment regime is complicated, and mild-to-moderate adverse effects are common, making patient compliance a key determinant of successful eradication. One attractive strategy is to leverage on technology-enhanced communication (TEC) strategies. However, the current data on the efficacy of TEC modalities in improving H. pylori eradication are limited. This is the first meta-analysis evaluating its effectiveness to the best of our knowledge. Thus, it is essential to evaluate the current body of evidence to learn the impact of TEC initiatives. METHODS A literature search was done on PubMed, World of Science, and Embase. A total of 9 studies variably reported on compliance rate, eradication rate, adverse effect rate, symptom relief, patient satisfaction, treatment cost, patient disease awareness, and follow-up rates. RESULTS This meta-analysis showed that TEC initiatives significantly improve patient compliance (OR 4.52, 95% CI 2.09 - 9.77, p < .01) and eradication rate (OR 1.98, 95% CI 1.34 - 2.93, p < .01) but not adverse effect rate (OR 0.65, 95% CI [0.27 - 1.57], p = .34). Due to the small number of studies and population sample, patient satisfaction, symptom relief, treatment costs, disease awareness, and follow-up rates were assessed qualitatively. CONCLUSION TEC initiatives effectively improve compliance to the H. pylori eradication regime and increase the eradication rate.
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