32 results on '"Linn, YL"'
Search Results
2. Registry to investigate the efficacy and safety of the VenaBlock © VeIn SEaling system for VaRicose veins in SingApore – Six months results of the RIVIERA trial.
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Linn, YL, Yap, CJQ, Soon, SXY, Chan, SL, Khoo, VBX, Chong, TT, and Tang, TY
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SAPHENOUS vein , *ACADEMIC medical centers , *TREATMENT effectiveness , *VARICOSE veins , *DESCRIPTIVE statistics , *QUESTIONNAIRES , *QUALITY of life , *ETHNIC groups , *BODY mass index , *VASCULAR closure devices , *PATIENT safety , *LONGITUDINAL method - Abstract
Background: The Venablock© Venous Closure System (Invamed, Ankara, Turkey) is a novel cyanoacrylate-based non-thermal non-tumescent embolization device to block refluxing truncal veins for chronic venous insufficiency and varicose veins. The aim was to prospectively evaluate the safety and 6 months efficacy of Venablock© for the treatment of primary great saphenous vein (GSV) and small saphenous vein (SSV) incompetency in a multi-ethnic cohort from Singapore. Methods: This was a single arm, single investigator prospective study of 29 patients (39 limbs, 39 truncal veins) recruited over a 5-month period (August 2019 to February 2020), who were treated with the Venablock© device at a tertiary vascular unit in Singapore. Patients with symptomatic varicose veins (C2–6) and had truncal reflux > 0.5 second on venous Duplex ultrasound were included. Follow-up occurred at 2 weeks, 3 and 6 months with dedicated quality of life questionnaires and a targeted Duplex ultrasound performed to check for continued venous occlusion. Result: Mean age was 61.4 (±11.0) years and mean BMI was 26.2 (±5.7) kg/m2. 11/29 (37.9%) were males. Most common CEAP class treated was 2 (12/29, 41.3%). Mean diameter of treated GSV was 5.7 (±2.0) mm, 4.8 (±1.7) mm and 4.2 (±1.3) mm for the proximal, mid and distal above knee segments respectively. Mean time from access puncture to sheath removal was 23.4 (±10.0) mins. Vein occlusion at 2 weeks, 3 and 6 months was 39/39 (100%), 39/39 (100%) and 36/37 (97.2%) respectively. 5/29 (17.2%) developed puncture site infections, of which 3/29 (7.7%) required formal surgical drainage. 3/29 (7.7%) developed phlebitis. At 6 months, revised Venous Clinical Severity Score improved from 5.2 (±3.5) to 2.1 (±2.9; p <.001); EuroQol-5 Dimension score, from 7.4 (±2.1) to 5.7 (±1.4; p <.001); Aberdeen Varicose Vein Questionnaire score, from 18.1 (±15.5) to 7.9 (±8.9; p =.007); and Chronic Venous Insufficiency Questionnaire, from 18.6 (±16.2) to 4.5 (±6.3; p <.001). Conclusion: Venablock© is a safe and efficacious option of treating truncal venous insufficiency in a multi-ethnic Asian cohort from Singapore in the short term. There is a significant improvement in QoL. Longer follow-up is required to assess the durability of this technique, in particular the higher puncture site infection rates observed compared to other glue-based therapies. [ABSTRACT FROM AUTHOR]
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- 2021
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3. PhenoBench: A Large Dataset and Benchmarks for Semantic Image Interpretation in the Agricultural Domain.
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Weyler J, Magistri F, Marks E, Chong YL, Sodano M, Roggiolani G, Chebrolu N, Stachniss C, and Behley J
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The production of food, feed, fiber, and fuel is a key task of agriculture, which has to cope with many challenges in the upcoming decades, e.g., a higher demand, climate change, lack of workers, and the availability of arable land. Vision systems can support making better and more sustainable field management decisions, but also support the breeding of new crop varieties by allowing temporally dense and reproducible measurements. Recently, agricultural robotics got an increasing interest in the vision and robotics communities since it is a promising avenue for coping with the aforementioned lack of workers and enabling more sustainable production. While large datasets and benchmarks in other domains are readily available and enable significant progress, agricultural datasets and benchmarks are comparably rare. We present an annotated dataset and benchmarks for the semantic interpretation of real agricultural fields. Our dataset recorded with a UAV provides high-quality, pixel-wise annotations of crops and weeds, but also crop leaf instances at the same time. Furthermore, we provide benchmarks for various tasks on a hidden test set comprised of different fields: known fields covered by the training data and a completely unseen field.
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- 2024
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4. Early experience with pure laparoscopic donor hepatectomy: comparison with open donor hepatectomy and non-donor laparoscopic hepatectomy.
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Linn YL, Chong Y, Tan EK, Koh YX, Cheow PC, Chung AYF, Chan CY, Jeyaraj PR, and Goh BKP
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- Humans, Hepatectomy, Living Donors, Liver, Operative Time, Length of Stay, Retrospective Studies, Postoperative Complications, Liver Transplantation, Laparoscopy
- Abstract
Background: Pure laparoscopic donor hepatectomy (L-DH) has seen a rise in uptake in recent years following the popularization of minimally invasive modality for major hepatobiliary surgery. Our study aimed to determine the safety and compare the perioperative outcomes of L-DH with open donor hepatectomy (O-DH) and laparoscopic non donor hepatectomy (L-NDH) based on our single institution experience., Methods: Eighty of 113 laparoscopic hemi-hepatectomies performed between 2015 and 2022 met study inclusion criteria. Of these, 11 were L-DH. PSM in a 1:2 ratio of L-DH versus L-NDH and 1:1 ratio of L-DH versus O-DH were performed, identifying patients with similar baseline clinicopathological characteristics., Results: After 2:1 matching, the L-DH cohort were significantly younger (P < 0.001) and had lower ASA scores (P < 0.001) than the L-NDH cohort. L-DH was associated with a longer median operating time (P < 0.001) and shorter median postoperative stay (P < 0.001) than L-NDH. After 1:1 matching, there were no significant differences in baseline demographic between the L-DH and O-DH cohorts. L-DH was associated with lower median blood loss (P = 0.040) and shorter length of stay compared to O-DH (P = 0.004). There were no significant differences in recipient outcomes for both cohorts., Conclusion: L-DH can be adopted safely by surgeons experienced in L-NDH and ODH. It is associated with decreased blood loss and shorter length of stay compared to O-DH., (© 2023 Royal Australasian College of Surgeons.)
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- 2024
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5. Management of Spontaneous Aortic Thrombus Following Cisplatin-Based Chemotherapy in Urothelial Cancer: A Case Report.
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Zheng VM, Linn YL, Ch'ng JK, and Chng SP
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Spontaneous aortic thrombosis is exceedingly rare, and optimal treatment remains uncertain. We present an unusual case of a spontaneous aortic thrombus at the renal artery level in a patient undergoing active cisplatin treatment for urothelial carcinoma. Management included catheter-directed thrombolysis followed by thrombectomy. An open cutdown was performed on the left common femoral artery (CFA), with right groin access via a 6-Fr sheath. Clamping of the left superficial and deep femoral arteries, along with balloon occlusion of the right common iliac artery, prevented distal embolization. A Coda balloon introduced via direct left CFA puncture with a 20-Fr sheath was positioned above the aortic thrombus. After inflation, clots were trawled to the sheath, "sandwiching" the clots before removal of the balloon and sheath via the left groin. Post-operatively, the patient recovered well and received continued therapeutic anticoagulation.
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- 2023
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6. Utility of paclitaxel-coated balloons for the treatment of infrainguinal disease in the Asian population - 24-month outcome data from the BIOLUX P-III Global Registry 24-month Asian outcomes of BIOLUX P-III.
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Linn YL, Wang JC, Pua U, Yahaya SA, Choke ET, Chong TT, Brodmann M, and Tang TY
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- Humans, Popliteal Artery, Treatment Outcome, Paclitaxel adverse effects, Vascular Patency, Registries, Coated Materials, Biocompatible, Femoral Artery, Angioplasty, Balloon, Peripheral Arterial Disease diagnostic imaging, Peripheral Arterial Disease therapy
- Abstract
Background: Results from the BIOLUX P-III registry have demonstrated favourable outcomes of Passeo-18 Lux™ (Biotronik®, Buelach, Switzerland) drug-coated balloon in treating obstructive infrainguinal peripheral artery disease, but it has not been established if Asians would benefit to the same extent as non-Asians., Methods: A subgroup analysis was performed on the 24-month data comparing the Asian cohort (AC) to non-Asian cohort (NAC)., Results: AC included 49 patients with 77 lesions. AC was significantly younger (65.6 vs 70.3 years, p < 0.05), had more diabetes (87.8% vs 45.3%, p < 0.05), and was more likely to present with CLTI (73.5% vs 35.3%, p < 0.001) compared to NAC. They had significantly longer mean target lesions (115 vs 86.9 mm, p = 0.006), and received significantly higher paclitaxel doses (10.7 vs 7.2 mg, p = 0.0005). Device, technical and procedural successes were 125/125(100%), 95/97(97.5%) and 45/49(91.8%), respectively. There was no significant difference in target lesion revascularization rates between groups (10.5% vs 12%, p = 0.91). However, the AC had more major adverse events (30.2% vs 16.1%, p = 0.001), amputations (26.3% vs 6.2%, p < 0.05) and mortality (37.9% vs 10.6%, p < 0.05) at 24 months., Conclusion: Passeo-18 Lux™ use was efficacious in Asians, but was associated with higher adverse events, amputations and mortality rates, likely attributable to poorer patient comorbidities and more extensive PAD.
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- 2023
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7. Preoperative Predictors of Early Recurrence After Liver Resection for Multifocal Hepatocellular Carcinoma.
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Guo Y, Linn YL, Koh YX, Tan EK, Teo JY, Cheow PC, Jeyaraj PR, Chow PKH, Ooi LLPJ, Chung AYF, Chan CY, and Goh BKP
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- Humans, alpha-Fetoproteins, Neoplasm Recurrence, Local surgery, Neoplasm Recurrence, Local pathology, Retrospective Studies, Hepatectomy, Carcinoma, Hepatocellular pathology, Liver Neoplasms pathology, Hepatitis B
- Abstract
Background: Liver transplantation remains the optimal treatment for multifocal hepatocellular carcinoma (HCC). However, due to resource constrains, other therapeutic modalities such as liver resection (LR), are frequently utilized. LR, however, has to be balanced against potential morbidity and mortality along with the risks of early recurrence leading to futile surgery. In this study, we evaluated preoperative factors, including inflammatory indices, in predicting early (< 1 year) recurrence in patients who underwent LR for multifocal HCC., Methods: This was a post hoc analysis of 250 consecutive patients with multifocal HCC who underwent LR., Results: After exclusion of 10 patients with 30-day/in-hospital mortality, 240 were included of which 134 (55.8%) developed early recurrence. Hepatitis B/C aetiology, 3/ > more hepatic nodules and elevated alpha-fetoprotein (AFP) ≥ 200 ng/ml were significant independent preoperative predictors of early recurrence. The early recurrence rate was 72.1% when 2 out of 3 significant predictive factors were present. The conglomerate of all 3 factors predicted early recurrence of 100% with a statistically significant association between number of predictive factors and early recurrence (p < 0.001)., Conclusion: Better patient selection via the use of preoperative predictive factors of early recurrence such as hepatitis B/C aetiology, ≥ 3 nodules and elevated AFP ≥ 200 ng/ml may assist in identifying patients in whom LR is deemed futile and improve resource allocation., (© 2023. The Society for Surgery of the Alimentary Tract.)
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- 2023
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8. A Very Unusual Complication of Groove Pancreatitis.
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Linn YL and Lim EKW
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- Humans, Cholecystitis etiology, Pancreatitis, Chronic diagnosis, Pancreatitis, Chronic diagnostic imaging
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- 2023
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9. Treatment of a Delayed Type IIIb Endoleak 20 Years Post EVAR With Inverted Contralateral Limb Custom-Made Device: A Case Report.
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Linn YL, Tay KH, Ng NZP, Lee SQ, Tang TY, and Chong TT
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- Male, Humans, Aged, Aged, 80 and over, Endoleak diagnostic imaging, Endoleak etiology, Endoleak surgery, Blood Vessel Prosthesis adverse effects, Treatment Outcome, Stents adverse effects, Retrospective Studies, Blood Vessel Prosthesis Implantation adverse effects, Aortic Aneurysm, Abdominal diagnostic imaging, Aortic Aneurysm, Abdominal surgery, Aortic Aneurysm, Abdominal complications, Endovascular Procedures adverse effects
- Abstract
Purpose: Type III endoleak can be difficult to distinguish from Type I endoleak. Depending on the stent graft anatomy, the use of standard bifurcated endografts may not be technically feasible, and patients may have to be subject to an aorto-uni-iliac repair with femoral-femoral bypass or open surgery., Case Report: We report a case of an 86-year-old male who had a Type IIIb endoleak 20 years post EVAR which was characterized on angiography to be from a hole close to the bifurcation limb origin. The initial Talent (Medtronic, Santa Rosa, California) device had a 50 mm main body common trunk, which was not amenable to treatment with standard devices. He was successfully treated with a custom-made device with an inverted contralateral limb., Conclusions: Our case highlights the need for lifelong surveillance post EVAR as endoleak may present decades post initial EVAR. It also demonstrates that many Type III endoleak which were otherwise deemed unsuitable for treatment with standard devices may potentially be treatable with custom-made device (CMD). This solution preserves a percutaneous option in a now older person which avoids surgical bypass. Further studies are required to establish the durability of this treatment and survey for recurrence.
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- 2023
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10. Systematic review and meta-analysis of difficulty scoring systems for laparoscopic and robotic liver resections.
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Linn YL, Wu AG, Han HS, Liu R, Chen KH, Fuks D, Soubrane O, Cherqui D, Geller D, Cheung TT, Edwin B, Aldrighetti L, Abu Hilal M, Troisi RI, Wakabayashi G, and Goh BKP
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- Humans, Hepatectomy, Outcome Assessment, Health Care, Liver, Retrospective Studies, Length of Stay, Robotic Surgical Procedures, Laparoscopy, Liver Neoplasms surgery
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Introduction: The ability to stratify the difficulty of minimally invasive liver resection (MILR) allows surgeons at different phases of the learning curve to tackle cases of appropriate difficulty safely. Several difficulty scoring systems (DSS) have been formulated which attempt to accurately stratify this difficulty. The present study aims to review the literature pertaining to the existing DSS for MILR., Methods: We performed a systematic review and metanalysis of the literature reporting on the formulation, supporting data, and comparison of DSS for MILR., Results: A total of 11 studies were identified which reported on the formulation of unique DSS for MILR. Five of these (Ban, Iwate, Hasegawa, Institut Mutaliste Montsouris [IMM], and Southampton DSS) were externally validated and shown to predict difficulty of MILR via a range of outcome measures. The Ban DSS was supported by pooled data from 10 studies (9 LLR, 1 RLR), Iwate by 10 studies (8 LLR, 2 RLR), Hasegawa by four studies (all LLR), IMM by eight studies (all LLR), and Southampton by five studies (all LLR). There was no clear superior DSS., Conclusion: The existing DSS were all effective in predicting difficulty of MILR. Present studies comparing between DSS have not established a clear superior system, and the five main DSS have been found to be predictive of difficulty in LLR and two of these in RLR., (© 2022 Japanese Society of Hepato-Biliary-Pancreatic Surgery.)
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- 2023
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11. Sigmoid stricture complicating ileostomy reversal: gastrointestinal COVID-19 or biologics? A diagnostic dilemma.
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Linn YL, Rajaguru K, Goh S, and Seow CS
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- Humans, Ileostomy adverse effects, Constriction, Pathologic etiology, Colon, Sigmoid, COVID-19 Testing, Biological Products, COVID-19
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- 2023
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12. Altered frontal electroencephalography as a potential correlate of acute dissociation in dissociative disorders: novel findings from a mirror confrontation study.
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Schäflein E, Mertens YL, Lejko N, Beutler S, Sattel H, and Sack M
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People suffering from chronic dissociation often experience stress and detachment during self-perception. We tested 18 people with dissociative disorders not otherwise specified (DDNOS; compared with a matched sample of 18 healthy controls) undergoing a stress-inducing facial mirror confrontation paradigm, and measured acute dissociation and frontal electroencephalography (measured with a four-channel system) per experimental condition (e.g. confrontation with negative cognition). Linear mixed models indicated a significant group×time×condition effect, with DDNOS group depicting less electroencephalography power than healthy controls at the beginning of mirror confrontation combined with negative and positive cognition. This discrepancy - most prominent in the negative condition - diminished in the second minute. Correlational analyses depicted a positive association between initial electroencephalography power and acute dissociation in the DDNOS group. These preliminary findings may indicate altered neural processing in DDNOS, but require further investigation with more precise electroencephalography measures.
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- 2022
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13. Laparoscopic versus open caudate lobe liver resections: a 1:2 propensity score-matched controlled study based on a single institution experience.
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Wang Z, Linn YL, Chong Y, Chung AY, Chan CY, and Goh BKP
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- Hepatectomy methods, Humans, Length of Stay, Operative Time, Postoperative Complications epidemiology, Postoperative Complications surgery, Propensity Score, Retrospective Studies, Treatment Outcome, Laparoscopy methods, Liver Neoplasms surgery
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Background: Despite the wide use of laparoscopy for liver resection, laparoscopic caudate lobe resections(L-CLR) remain technically challenging, only attempted by experts in the field. The primary objective of this study was to determine the safety and compare the perioperative outcomes of L-CLR with O-CLR based on our single institution experience in a 1:2 propensity score-matched controlled study based on our single institution experience., Methods: Between 2004 and 2020, 67 consecutive patients who underwent CLR at Singapore General Hospital were identified. Propensity score matching (PSM) of laparoscopic versus open caudate lobe resections(O-CLR) was performed in a 1:2 ratio with no replacements using nearest neighbour matching method., Results: L-CLR was associated with a significantly decreased median blood loss (150 mL versus 500 mL, P = 0.001) and a decreased median post-operative stay (3 days versus 7.5 days, P = <0.01) in the unmatched cohorts. After 1:2 propensity score matching, these results were again demonstrated with a significantly lower blood loss (150 mL versus 400 mL, P = 0.016) and a shorter postoperative stay (3 days versus 7 days, P = <0.01) in favour of L-CLR. 30-day readmission and major morbidity (Clavien-Dindo grade > 2) rates were all in favour of L-CLR as well but could not reach statistical significance., Conclusion: L-CLR can be safely performed by experienced surgeons. It is associated with decreased blood loss and shorter perioperative stay compared to O-CLR., (© 2022 Royal Australasian College of Surgeons.)
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- 2022
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14. Comparison of the use of allogenic acellular dermal matrix on rates of Frey syndrome post parotidectomy: A systematic review and meta-analysis.
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Linn YL, Khoo MSQ, Sultana R, Iyer NG, and Dharmawan R
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- Humans, Acellular Dermis, Adenoma, Pleomorphic surgery, Sweating, Gustatory etiology, Sweating, Gustatory prevention & control
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Objective: The aim of this study was to evaluate the efficacy of acellular dermal matrix (ADM) use in reducing Frey syndrome (FS) rates in patients postparotidectomy., Study Design: We performed a systematic review and meta-analysis of existing literature comparing rates of FS with and without ADM use., Results: Eight studies were shortlisted for qualitative study, of which 7 compared rates of FS with and without the use of ADM. A total of 211 patients underwent parotidectomy with the use of ADM. Of these, mean patient age was 44.7 (SD ± 7.2); 89 of 159 were pleomorphic adenoma (55.9%), 29 of 159 with histological diagoses stated were Warthin's tumor (18.2%), and 159 of 211 were other histologic diagnoses (25.7%). Subjective and objective incidence rates for FS were 23 of 211 (10.9%) and 7 of 211 (3.3%), respectively. Patients in whom ADM barriers were used had significantly lower rates of subjective and objective FS (relative risk = 0.22; 95% confidence interval, 0.09-0.57; P = .002; and relative risk = 0.07; 95% confidence interval, 0.07-0.33; P < .001), respectively, compared to patients with no ADM., Conclusion: The use of ADM was associated with lower FS rates compared to no ADM and should be considered in routine use to prevent this condition., (Copyright © 2021 Elsevier Inc. All rights reserved.)
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- 2022
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15. Utility of sirolimus coated balloons in the peripheral vasculature - a review of the current literature.
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Linn YL, Choke ETC, Yap CJQ, Tan RY, Patel A, and Tang TY
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Sirolimus-coated balloons (SCB) have demonstrated much promise as an alternative drug eluting device to the existing paclitaxel coated balloon platforms for the treatment of peripheral arterial disease (PAD). They have been well tested pre-clinically and have demonstrated anti-restenotic effects as well as clinical safety in its use for treatment of coronary artery disease. The existing approved SCBs have thus far demonstrated good short-term patency (12-months) and did not exhibit any major adverse events or device related shortcomings in its use for treatment of PAD. There are several studies ongoing which aim to further investigate the efficacy of existing SCBs and establish a direct comparison of its outcomes compared with plain balloon angioplasty. Also, SCB utility to salvage failing arteriovenous fistulas for haemodialysis patients has also been explored. We review the current progress made in the establishment of SCB in the treatment of PAD as well as highlight ongoing studies investigating the role of SCB in various settings., (© 2022. The Author(s).)
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- 2022
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16. The Antibiofilm Role of Biotics Family in Vaginal Fungal Infections.
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Boahen A, Than LTL, Loke YL, and Chew SY
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"Unity in strength" is a notion that can be exploited to characterize biofilms as they bestow microbes with protection to live freely, escalate their virulence, confer high resistance to therapeutic agents, and provide active grounds for the production of biofilms after dispersal. Naturally, fungal biofilms are inherently resistant to many conventional antifungals, possibly owing to virulence factors as their ammunitions that persistently express amid planktonic transition to matured biofilm state. These ammunitions include the ability to form polymicrobial biofilms, emergence of persister cells post-antifungal treatment and acquisition of resistance genes. One of the major disorders affecting vaginal health is vulvovaginal candidiasis (VVC) and its reoccurrence is termed recurrent VVC (RVVC). It is caused by the Candida species which include Candida albicans and Candida glabrata . The aforementioned Candida species, notably C. albicans is a biofilm producing pathogen and habitually forms part of the vaginal microbiota of healthy women. Latest research has implicated the role of fungal biofilms in VVC, particularly in the setting of treatment failure and RVVC. Consequently, a plethora of studies have advocated the utilization of probiotics in addressing these infections. Specifically, the excreted or released compounds of probiotics which are also known as postbiotics are being actively researched with vast potential to be used as therapeutic options for the treatment and prevention of VVC and RVVC. These potential sources of postbiotics are harnessed due to their proven antifungal and antibiofilm. Hence, this review discusses the role of Candida biofilm formation in VVC and RVVC. In addition, we discuss the application of pro-, pre-, post-, and synbiotics either individually or in combined regimen to counteract the abovementioned problems. A clear understanding of the role of biofilms in VVC and RVVC will provide proper footing for further research in devising novel remedies for prevention and treatment of vaginal fungal infections., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Boahen, Than, Loke and Chew.)
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- 2022
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17. Minimally Invasive vs Open Major Hepatectomies for Liver Malignancies: a Propensity Score-Matched Analysis.
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Chin KM, Linn YL, Cheong CK, Koh YX, Teo JY, Chung AYF, Chan CY, and Goh BKP
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- Hepatectomy adverse effects, Hepatectomy methods, Humans, Length of Stay, Operative Time, Postoperative Complications epidemiology, Postoperative Complications etiology, Postoperative Complications surgery, Propensity Score, Retrospective Studies, Treatment Outcome, Laparoscopy methods, Liver Neoplasms surgery
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Background: The majority of evidence with regards to minimally invasive liver resection (MILR) favors its application in minor hepatectomies. We conducted a propensity score-matched (PSM) analysis to determine its feasibility and safety in major hepatectomies (MIMH) for liver malignancies., Methods: Retrospective review of 130 patients who underwent MIMH and 490 patients who underwent open major hepatectomy (OMH) for malignant pathologies was performed. PSM in a 1:1 ratio identified two groups of patients with similar baseline clinicopathological characteristics. Perioperative outcomes were then compared. Major hepatectomies included traditional major (>3 segments) and technical major hepatectomies (right anterior and right posterior sectionectomies)., Results: Both cohorts were well-matched for baseline characteristics after PSM. Of 130 MIMH cases, there were 12 conversions to open. Comparison of perioperative outcomes demonstrated a significant association of MIMH with longer operation time and more frequent application of Pringle's maneuver (PM), but decreased postoperative stay. These results were consistent on a subgroup analysis that only included patients undergoing traditional major hepatectomies. A second subgroup analysis restricted to cirrhotic patients demonstrated that while perioperative outcomes were equivalent, MIMH was similarly associated with a longer operative time. Subset analyses of resections performed after 2015 demonstrated that MIMH was additionally associated with a lower postoperative morbidity compared to OMH., Conclusion: Comparison of perioperative and short-term oncological outcomes between MIMH and OMH for malignancies demonstrated that MIMH is feasible and safe. It is associated with a shorter hospital stay at the expense of a longer operation time compared to OMH., (© 2021. The Society for Surgery of the Alimentary Tract.)
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- 2022
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18. Unusual Case of Delayed Rupture of Pancreatic Neuroendocrine Tumor After Endoscopic Ultrasound and Biopsy.
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Linn YL, Tan DMY, Cheow PC, and Goh BKP
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- Endoscopic Ultrasound-Guided Fine Needle Aspiration, Endosonography, Humans, Neuroendocrine Tumors diagnostic imaging, Neuroendocrine Tumors pathology, Pancreatic Neoplasms diagnostic imaging, Pancreatic Neoplasms pathology
- Abstract
Competing Interests: The authors declare no conflict of interest.
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- 2022
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19. Breast metastasis presenting as swelling with calcification - A case report and review of the literature.
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Linn YL, Tay TKY, Tan EH, Wong JSL, and Madhukumar P
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- Adenocarcinoma pathology, Female, Humans, Lung Neoplasms pathology, Mammography, Middle Aged, Adenocarcinoma secondary, Breast Neoplasms secondary, Calcinosis diagnostic imaging
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Primary breast carcinomas often present as ill-defined, infiltrative lesions which may contain calcifications, whereas metastatic cancers from non-mammary sites are often more well-circumscribed, sharply demarcated from the adjacent breast tissue and are usually not associated with calcifications, although there are exceptions. We report an atypical case of a lady with lung adenocarcinoma with pleural involvement, who presented with diffuse breast swelling with calcifications on imaging from metastatic lung adenocarcinoma, the first of its kind in the literature. We postulate that the pathophysiology of this was due to lymphatic spread of the tumour from the pleura resulting in retrograde lymphovascular congestion of the breast, resulting in swelling and dystrophic calcification.
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- 2022
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20. Endoleak Complicated by communicating psoas abscess and aorto-enteric fistula in an immunocompromised patient.
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Linn YL, Ng NZP, Tang TY, and Chong TT
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- Aortic Aneurysm, Abdominal diagnostic imaging, Blood Vessel Prosthesis Implantation instrumentation, Device Removal, Endoleak diagnostic imaging, Endoleak surgery, Endovascular Procedures instrumentation, Humans, Intestinal Fistula diagnostic imaging, Intestinal Fistula surgery, Male, Middle Aged, Prosthesis-Related Infections diagnostic imaging, Prosthesis-Related Infections surgery, Psoas Abscess diagnostic imaging, Psoas Abscess surgery, Treatment Outcome, Vascular Fistula diagnostic imaging, Vascular Fistula surgery, Aortic Aneurysm, Abdominal surgery, Blood Vessel Prosthesis adverse effects, Blood Vessel Prosthesis Implantation adverse effects, Endoleak etiology, Endovascular Procedures adverse effects, Immunocompromised Host, Intestinal Fistula etiology, Prosthesis-Related Infections etiology, Psoas Abscess etiology, Vascular Fistula etiology
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Purpose: While endovascular repair of aortic aneurysm (EVAR) has become the mainstay treatment for abdominal aortic aneurysm (AAA), it is not without its disadvantages. Feared complications include graft infections, fistulation and endoleak, the outcomes of which may be life limiting., Case Report: We present a case of a 57 year-old patient with human immunodeficiency virus (HIV) previously treated with EVAR for AAA complicated by endoleak post treatment. He developed an aorto-psoas abscess 2 years later which harboured Mycobacterium avium complex, and medical therapy was unsuccessful. He eventually underwent an extra-anatomical bypass and graft explant, for which an aortoenteric fistula was also discovered and repaired., Conclusion: Infection of endografts post EVAR is relatively rare, and there are presently no guidelines concerning its management. The concomittance of aorto-psoas abscess and aortoenteric fistula is even more uncommon, and necessitated surgical explant for source control purposes in our patient. Lifelong surveillance is required for complications of the aortic stump and bypass patency., (Copyright © 2021. Published by Elsevier Inc.)
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- 2022
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21. Preoperative predictors of early recurrence of AJCC T4 hepatocellular carcinoma.
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Linn YL, Chua DW, Koh YX, Tan EK, Teo JY, Cheow PC, Jeyaraj PR, Chow PKH, Ooi LLPJ, Chung AYF, Chan CY, and Goh BKP
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- Aged, Carcinoma, Hepatocellular pathology, Carcinoma, Hepatocellular surgery, Female, Hepatectomy, Humans, Liver Neoplasms surgery, Male, Middle Aged, Neoplasm Recurrence, Local pathology, Neoplasm Staging, Postoperative Complications epidemiology, Preoperative Care, Retrospective Studies, Risk Factors, Singapore epidemiology, Carcinoma, Hepatocellular epidemiology, Liver Neoplasms epidemiology, Liver Neoplasms pathology, Neoplasm Recurrence, Local epidemiology
- Abstract
Background: The management of HCC differs depending on the extent of disease. Surgery may be offered in selected cases of T4 disease as defined by AJCC 8th. However, outcome data post partial hepatectomy (PH) for T4 disease is scarce. We sought to evaluate the outcomes of patients post resection of T4 HCC and assess preoperative predictive factors of early recurrence., Methods: We performed a retrospective review of 235 consecutive patients who underwent resection for T4 HCC from 2001 to 2018 at our institution., Results: Median overall survival was 35.9 months (95% CI 25.7-46.0). 109 patients (49.5%) developed recurrence, of which 94 patients (42.7%) experienced early recurrence within 12 months. Median time to recurrence was 38.1 months. Multivariate analysis demonstrated that vascular invasion were significant independent preoperative predictor of early recurrence post resection. Patients who experienced early recurrence had a significantly shorter median overall survival 14.3 months (95% CI 25.7-46.0) compared to those who did not (55.5 months, 95% CI 40.6-70.8, p = .000)., Conclusion: Selected patients with T4 HCC may benefit from PH. Macrovascular invasion was associated with early recurrence within 12 months., (Copyright © 2021 Elsevier Ltd. All rights reserved.)
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- 2021
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22. Nellix-in-Nellix Application for Recurrent Abdominal Aortic Aneurysm Endoleak in a Patient with Prior Fenestrated Thoracic Endovascular Aneurysm Repair.
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Linn YL, Ng NZP, Yap HY, Tay KH, and Chong TT
- Subjects
- Blood Vessel Prosthesis, Endoleak diagnostic imaging, Endoleak etiology, Endoleak surgery, Humans, Prosthesis Design, Stents, Treatment Outcome, Aortic Aneurysm, Abdominal diagnostic imaging, Aortic Aneurysm, Abdominal surgery, Blood Vessel Prosthesis Implantation adverse effects, Endovascular Procedures adverse effects
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- 2021
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23. Large Pelvic Arteriovenous Malformation - A Bloody Near Miss.
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Linn YL, Tay KH, and Chong TT
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- 2021
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24. Factors influencing choice of treatment modality for varicose veins in Singapore.
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Linn YL, Tan JX, Lim SY, D'Cruz RT, Choke ETC, Chong TT, and Tang TY
- Subjects
- Humans, Singapore, Varicose Veins epidemiology, Varicose Veins therapy
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- 2021
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25. Minimally invasive versus open right anterior sectionectomy and central hepatectomy for central liver malignancies: a propensity-score-matched analysis.
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Chin KM, Linn YL, Cheong CK, Koh YX, Teo JY, Chung AYF, Chan CY, and Goh BKP
- Subjects
- Hepatectomy, Humans, Length of Stay, Propensity Score, Retrospective Studies, Treatment Outcome, Carcinoma, Hepatocellular surgery, Laparoscopy, Liver Neoplasms surgery
- Abstract
Background: The utility of minimally-invasive liver resection (MILR) for deep centrally located tumours (CLT) remains controversial. We aimed to review our institution's experience and outcomes with minimally invasive central hepatectomy (CH) and right anterior sectionectomy (RAS) for CLT in a propensity score-matched (PSM) analysis., Methods: Retrospective review of a prospectively maintained surgical database revealed 23 patients who underwent MILR (6 CH, 17 RAS) and 53 patients who underwent open liver resection (OLR; 24 CH, 29 RAS) for CLT. PSM in a 1:1 ratio identified two groups of patients with similar baseline clinicopathological characteristics. Peri-operative outcomes were then compared., Results: There was one laparoscopic-assisted, one robot-assisted and two laparoscopic-converted-open procedures in the MILR cohort. Across the unmatched cohort, there was only one mortality (MILR) and five patients with major morbidity (all OLR). MILR was associated with a longer operating time (P < 0.001), but shorter post-operative hospital stay (P = 0.002) and decreased morbidity (P = 0.018) in the unmatched cohort. Examination of peri-operative outcomes after PSM revealed that MILR was similarly associated with a longer operating time (P = 0.001) and shortened post-operative hospital stay (P = 0.043). OLR was associated with a significantly reduced application of Pringle manoeuvre (P = 0.004). There were no significant differences between MILR and OLR with regards to blood loss, blood transfusions, morbidity and margin status in the PSM analysis., Conclusion: MILR for CLT is safe and feasible when performed by experienced surgeons. It is associated with shorter hospital stays but at the expense of longer operation times and more frequent application of Pringle manoeuver., (© 2021 Royal Australasian College of Surgeons.)
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- 2021
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26. Dissociation and insecure attachment as mediators of the relation between childhood emotional abuse and nonclinical paranoid traits.
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Mertens YL, Racioppi A, Sheinbaum T, Kwapil T, and Barrantes-Vidal N
- Abstract
Background : Research suggests dissociation and insecure attachment serve as explanatory mechanisms in the pathway from childhood trauma to paranoia. However, past work has not examined these mechanisms concurrently in nonclinical populations. Objective : The current study sought to examine dissociation and insecure attachment as parallel mediators of the association between childhood emotional abuse and paranoid traits. Furthermore, a serial mediation model with insecure attachment preceding dissociation in the explanatory pathway was explored. Methods : Eighty-nine nonclinically ascertained young adults were assessed for childhood emotional abuse, dissociation, attachment styles, and paranoid traits. Parallel and serial mediation models were tested. Results : The association of childhood emotional abuse with both interview-based and self-reported paranoid traits was significantly mediated by dissociation and preoccupied attachment. Fearful attachment was a significant mediator in the model for self-reported paranoid traits. No evidence for a serial mediation effect was found. Conclusions : The present findings extend support for dissociation and attachment insecurity as mechanisms underlying the link between childhood emotional maltreatment and paranoid traits. Longitudinal research is needed to inform whether insecure attachment contributes to dissociation along the pathways to paranoid traits., Competing Interests: No potential conflict of interest was reported by the authors., (© 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.)
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- 2021
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27. Robotic transduodenal ampullectomy: Case report and review of the literature.
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Linn YL, Wang Z, and Goh BKP
- Abstract
Ampullary neoplasms are relatively uncommon lesions with a risk of progression to malignancy. Depending on its nature, size and location, it may be best treated with endoscopic papillotomy, pancreaticoduodenectomy or transduodenal ampullectomy. Transduodenal ampullectomy offers a higher chance of complete resection compared to endoscopic papillotomy, and carries lower morbidity than a pancreaticoduodenectomy, making it the ideal choice for localised ampullary tumour not involving the ducts but not amenable to complete endoscopic resection. While traditionally performed via open surgery, it has been attempted via laparoscopic approach and more recently robotic approach. We present a case of a 63-year-old man who underwent a robotic transduodenal ampullectomy for ampullary adenoma with high grade dysplasia, and review the literature surrounding robotic transduodenal ampullectomy.
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- 2021
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28. Actual 10-year survivors and 10-year recurrence free survivors after primary liver resection for hepatocellular carcinoma in the 21st century: A single institution contemporary experience.
- Author
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Linn YL, Chee MY, Koh YX, Teo JY, Cheow PC, Chow PKH, Chan CY, Chung AYF, Ooi LLPJ, and Goh BKP
- Subjects
- Aged, Carcinoma, Hepatocellular pathology, Carcinoma, Hepatocellular surgery, Female, Follow-Up Studies, Humans, Liver Neoplasms pathology, Liver Neoplasms surgery, Male, Middle Aged, Neoplasm Recurrence, Local pathology, Neoplasm Recurrence, Local surgery, Prognosis, Prospective Studies, Retrospective Studies, Survival Rate, Time Factors, Cancer Survivors statistics & numerical data, Carcinoma, Hepatocellular mortality, Hepatectomy mortality, Liver Neoplasms mortality, Liver Transplantation mortality, Neoplasm Recurrence, Local mortality
- Abstract
Background: At present, the majority of outcome studies of survival of hepatocellular carcinoma (HCC) post-liver resection (post-LR) present actuarial survival data, which often results in overestimation of survival. We sought to evaluate the actual 10-year survival post-LR for HCC and identify variables that are associated with long-term survival., Methods: We performed a retrospective review of 600 consecutive patients who underwent primary LR for HCC from 2000 to 2010 at our institution. Twenty-eight patients (4.7%) with 90-day mortality and 125 patients who were lost to follow-up within 10 years were excluded leaving 447 patients who met the study criteria., Results: There were 140 actual 10-year survivors of which 57 (40.7%) had a recurrence within 10 years. The actual 10-year overall survival (OS) rate of the 447 patients was 31.5% and the actual 10-year recurrence-free survival (RFS) was 18.6%. Multivariate analyses demonstrated that only age >65 years (OR, 0.29; p < .001) (OR, 0.973; p = .041) and presence of cirrhosis (OR. 0.37; p = .005) (OR, 0.31; p = .001) were independent factors negatively associated with actual 10-year OS and actual 10-year RFS, respectively., Conclusion: Approximately one-third of patients will survive over 10 years after LR for HCC. Amongst these 10-year survivors, 41% had developed recurrent cancer within 10-years of follow-up., (© 2020 Wiley Periodicals LLC.)
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- 2021
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29. Emergency laparoscopic surgery for ruptured pancreatic pseudocyst: Report of two cases and review of the literature.
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Linn YL, Wang Z, and Goh BKP
- Abstract
Pancreatic pseudocyst (PP) is a known complication of pancreatitis. When a rupture occurs, patients often become haemodynamically unstable and require emergency surgery for source control. Conventionally, such a procedure is carried out through open technique due to patient, surgeon and technical factors. We present two cases of emergency laparoscopic surgery performed for ruptured PP. Our first patient was a 53-year-old male with a ruptured 17.6 cm pancreatic body pseudocyst who underwent a laparoscopic washout, adhesiolysis, necrosectomy, distal pancreatectosplenectomy and cholecystectomy. The second patient was a 66-year-old male with a ruptured 11 cm pancreatic body pseudocyst who underwent laparoscopic surgery, subsequently converted to hand-assisted surgery. We compare our cases with the existing literature and discuss pertinent management considerations. In conclusion, we demonstrated that emergency laparoscopic adhesiolysis, necrosectomy and distal pancreatosplenectomy are feasible and safe for the management of ruptured pseudocyst when performed by an experienced surgeon. However, further studies are needed to determine the advantages or limitations of the minimally invasive surgical approach for the management of these complicated cases., Competing Interests: None
- Published
- 2021
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30. Heal or no heel: Outcomes of ischaemic heel ulcers following lower limb revascularization from a multi-ethnic Asian Cohort in Singapore.
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Linn YL, Chan SL, Soon SXY, Yap CJQ, Lim MNHH, Lee QWS, Chong TT, and Tang TY
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- Aged, Amputation, Surgical, Humans, Ischemia surgery, Limb Salvage, Lower Extremity, Retrospective Studies, Risk Factors, Singapore epidemiology, Treatment Outcome, Wound Healing, Heel surgery, Ulcer
- Abstract
Ischaemic diabetic heel ulcers are difficult to treat and prognosis is often guarded. The aim was to document our outcome of treating heel ulcers following revascularization in a predominantly diabetic Asian cohort presenting with chronic limb threatening ischaemia from Singapore. Retrospective cohort study (n = 66, 66 limbs) over a 5-year period. Data were collected from hospital electronic health records. Outcomes included time to healing, amputation free survival (AFS), and mortality. Minimum follow-up period was 6 months. Multivariate regression analysis was performed to look for factors associated with poor outcome. Mean age was 67.4 ± 8.8 years. 62/66 (93.9%) were diabetics. Mean wound size at presentation was 3.6 ± 2.3 cm. Mean Wound, Ischaemia, Foot Infection (WIFI) score was 5 ± 1.6. 12/66 (18%) patients had a patent posterior tibial artery pre-operatively. Straight line flow was restored in only 31/66 (46.9) patients but 47/66 (71.2%) had successful limb salvage. Median time to wound healing was 90.0 (IQR 60-180) days. A median of 1 (IQR 0-2) wound debridement was required. Patients who underwent negative pressure dressing (23/66; 34.8%) required a median of 26 (IQR 13-33) cycles to achieve healing. Amputation free survival (AFS) was 72% and 68% at 6- and 12-months, respectively. Mortality rate was 16.7% and 19.7% at 6- and 12-months, respectively. Low albumin level and initial Rutherford class were independent predictors of worse 6-month AFS. Outcomes of heel ulcers post revascularisation may not be as poor as previously described. Persistent attention to wound care with multidisciplinary effort is needed for optimal healing., (© 2020 The Authors. International Wound Journal published by Medicalhelplines.com Inc and John Wiley & Sons Ltd.)
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- 2020
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31. Development of an enhanced acute care surgery service in response to the COVID-19 global pandemic.
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Mathur S, Jeremy Ng CF, Koh F, Cai M, Palaniappan G, Linn YL, Lim HL, Lakshman R, Ling XS, Chin ST, and Tan HK
- Subjects
- Adult, Aged, Attitude of Health Personnel, Betacoronavirus, COVID-19, Emergency Service, Hospital, Female, Health Personnel, Humans, Infection Control, Infectious Disease Transmission, Patient-to-Professional prevention & control, Length of Stay, Male, Medical Staff, Hospital organization & administration, Middle Aged, SARS-CoV-2, Workflow, Coronavirus Infections prevention & control, Cross Infection prevention & control, Delivery of Health Care methods, Pandemics prevention & control, Pneumonia, Viral prevention & control, Surgery Department, Hospital organization & administration, Surgical Procedures, Operative
- Abstract
Background: As the COVID-19 pandemic sweeps across the world, healthcare departments must adapt to meet the challenges of service provision and staff/patient protection. Unlike elective surgery, acute care surgery (ACS) workloads cannot be artificially reduced providing a unique challenge for administrators to balance healthcare resources between the COVID-19 surge and regular patient admissions., Methods: An enhanced ACS (eACS) model of care is described with the aim of limiting COVID-19 healthcare worker and patient cross-infection as well as providing 24/7 management of emergency general surgical (GS) and trauma patients. The eACS service comprised 5 independent teams covering a rolling 1:5 24-hr call. Attempts to completely separate eACS teams and patients from the elective side were made. The service was compared to the existing ACS service in terms of clinical and efficiency outcomes. Finally, a survey of staff attitudes towards these changes, concerns regarding COVID-19 and psychological well-being was assessed., Results: There were no staff/patient COVID-19 cross-infections. Compared to the ACS service, eACS patients had reduced overall length of stay (2-days), time spent in the Emergency Room (46 min) and time from surgery to discharge (2.4-hours). The eACS model of care saved financial resources and bed-days for the organisation. The changes were well received by team-members who also felt that their safety was prioritised., Conclusion: In healthcare systems not overwhelmed by COVID-19, an eACS model may assist in preserving psychological well-being for healthcare staff whilst providing 24/7 care for emergency GS and trauma patients., (Copyright © 2020. Published by Elsevier Ltd.)
- Published
- 2020
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32. Acute Kidney Injury Following Eastern Russell's Viper ( Daboia siamensis ) Snakebite in Myanmar.
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Alfred S, Bates D, White J, Mahmood MA, Warrell DA, Thwin KT, Thein MM, Sint San SS, Myint YL, Swe HK, Kyaw KM, Zaw A, and Peh CA
- Published
- 2019
- Full Text
- View/download PDF
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