1.Academy of Medicine, Singapore clinical guideline on endoscopic surveillance and management of gastric premalignant lesions.
Vikneswaran NAMASIVAYAM ; Calvin J KOH ; Stephen TSAO ; Jonathan LEE ; Khoon Lin LING ; Christopher KHOR ; Tony LIM ; James Weiquan LI ; Aung Myint OO ; Benjamin C H YIP ; Ikram HUSSAIN ; Tju Siang CHUA ; Bin Chet TOH ; Hock Soo ONG ; Lai Mun WANG ; Jimmy B Y SO ; Ming THE ; Khay Guan YEOH ; Tiing Leong ANG
Annals of the Academy of Medicine, Singapore 2022;51(7):417-435
Gastric cancer (GC) has a good prognosis, if detected at an early stage. The intestinal subtype of GC follows a stepwise progression to carcinoma, which is treatable with early detection and intervention using high-quality endoscopy. Premalignant lesions and gastric epithelial polyps are commonly encountered in clinical practice. Surveillance of patients with premalignant gastric lesions may aid in early diagnosis of GC, and thus improve chances of survival. An expert professional workgroup was formed to summarise the current evidence and provide recommendations on the management of patients with gastric premalignant lesions in Singapore. Twenty-five recommendations were made to address screening and surveillance, strategies for detection and management of gastric premalignant lesions, management of gastric epithelial polyps, and pathological reporting of gastric premalignant lesions.
Adenomatous Polyps
;
Endoscopy
;
Humans
;
Precancerous Conditions/therapy*
;
Singapore
;
Stomach Neoplasms/therapy*
2.Help-seeking patterns and funding strategies in patients with pulmonary arterial hypertension on phosphodiesterase-5 inhibitors: an orphan disease with effective but costly treatment.
Yinghao LIM ; Siti Munawarah Bte MAAROOF ; Ting Ting LOW ; Ivandito KUNTJORO ; James Wl YIP ; Edgar TAY
Singapore medical journal 2021;62(4):199-203
INTRODUCTION:
Pulmonary arterial hypertension (PAH) is associated with high medical and pharmaceutical costs. Phosphodiesterase type 5 (PDE5) inhibitors have been found to be beneficial but costly. They are not subsidised in Singapore except via the Medication Assistance Fund (MAF) Plus scheme. In this study, we described the help-seeking behaviour of patients and funding strategies for Singaporean patients on PDE5 inhibitors in our registry.
METHODS:
We consecutively recruited all patients with PAH who presented to our pulmonary hypertension specialty centre between 1 January 2003 and 29 December 2016. Singaporean patients on PDE5 inhibitors were included. Data recorded and analysed for this study included baseline demographics, whether the patients received MAF Plus funding, percentage of funding, and any additional source of subsidies.
RESULTS:
114 (77.0%) of 148 patients in the registry were Singapore citizens on PDE5 inhibitors. 75 (65.8%) of these 114 patients had been seen by a medical social worker, of whom 16 were on MAF Plus funding. 14 of the remaining 59 patients were subsidised by MediFund, whereas the remainder were self-paying. 30 (26.3%) patients in total were on some form of subsidy, and 28 (24.6%) patients were on combination therapy. Of this group, nine were receiving MAF Plus subsidies.
CONCLUSION
Fewer than expected patients were found to be receiving drug subsidies for PAH. This was partly due to insufficient referrals and lack of requests for financial assistance. Patients on combination therapy had greater financial challenges. This study should spur us on to study funding gaps further and address them.
3.Making a Traditional Spine Surgery Clinic Telemedicine-Ready in the “New Normal” of Coronavirus Disease 2019
Ka-Po Gabriel LIU ; Wei Loong Barry TAN ; Wei Luen James YIP ; Jun-Hao TAN ; Hee-Kit WONG
Asian Spine Journal 2021;15(2):164-171
Methods:
We reviewed the evidence behind telemedicine and described our clinical protocol, patient selection criteria, and workflow for telemedicine. We discussed a simple methodology to convert pre-existing traditional clinic resources into telemedicine tools, along with future challenges.
Results:
Our methodology was successfully and easily applied in our clinical practice, with a streamlined workflow allowing our spine surgery service to implement telemedicine as a consultation modality in line with the national recommendations of social distancing.
Conclusions
Telemedicine was well incorporated into our outpatient practice using the above workflow. We believe that the use of telemedicine via videoconferencing can become part of the new normal and a safe strategy for healthcare systems as both a medical and an economic countermeasure against COVID-19.
4.Making a Traditional Spine Surgery Clinic Telemedicine-Ready in the “New Normal” of Coronavirus Disease 2019
Ka-Po Gabriel LIU ; Wei Loong Barry TAN ; Wei Luen James YIP ; Jun-Hao TAN ; Hee-Kit WONG
Asian Spine Journal 2021;15(2):164-171
Methods:
We reviewed the evidence behind telemedicine and described our clinical protocol, patient selection criteria, and workflow for telemedicine. We discussed a simple methodology to convert pre-existing traditional clinic resources into telemedicine tools, along with future challenges.
Results:
Our methodology was successfully and easily applied in our clinical practice, with a streamlined workflow allowing our spine surgery service to implement telemedicine as a consultation modality in line with the national recommendations of social distancing.
Conclusions
Telemedicine was well incorporated into our outpatient practice using the above workflow. We believe that the use of telemedicine via videoconferencing can become part of the new normal and a safe strategy for healthcare systems as both a medical and an economic countermeasure against COVID-19.
5.Chapter of Gastroenterologists professional guidance for management of patients with liver disease in Singapore during the COVID-19 pandemic.
Jason Pik Eu CHANG ; Yu Jun WONG ; Wei Lyn YANG ; Kieron Boon Leng LIM ; Poh Seng TAN ; Gim Hin HO ; Benjamin Cherng Hann YIP ; James Weiquan LI ; Chern Hao CHONG ; David Eng Hui ONG ; Tju Siang CHUA ; Charles Kien Fong VU ; Kok Ann GWEE ; Tiing Leong ANG ; Chee Kiat TAN
Singapore medical journal 2020;61(12):619-623
In this paper, we aim to provide professional guidance to clinicians who are managing patients with chronic liver disease during the current coronavirus disease 2019 (COVID-19) pandemic in Singapore. We reviewed and summarised the available relevant published data on liver disease in COVID-19 and the advisory statements that were issued by major professional bodies, such as the American Association for the Study of Liver Diseases and European Association for the Study of the Liver, contextualising the recommendations to our local situation.
COVID-19/epidemiology*
;
Carcinoma, Hepatocellular/therapy*
;
Chronic Disease
;
Hepatitis B, Chronic/therapy*
;
Hepatitis C, Chronic/therapy*
;
Humans
;
Liver Cirrhosis/therapy*
;
Liver Diseases/therapy*
;
Liver Neoplasms/therapy*
;
Liver Transplantation
;
Singapore/epidemiology*
6.Chapter of Gastroenterologists professional guidance on risk mitigation for gastrointestinal endoscopy during COVID-19 pandemic in Singapore.
Tiing Leong ANG ; James Weiquan LI ; Charles Kien Fong VU ; Gim Hin HO ; Jason Pik Eu CHANG ; Chern Hao CHONG ; Tju Siang CHUA ; David Eng Hui ONG ; Benjamin Cherng Hann YIP ; Kok Ann GWEE
Singapore medical journal 2020;61(7):345-349
In this paper, we aimed to provide professional guidance to practising gastrointestinal (GI) endoscopists for the safe conduct of GI endoscopy procedures during the current coronavirus disease 2019 (COVID-19) pandemic and future outbreaks of similar severe respiratory tract infections in Singapore. It draws on the lessons learnt during the severe acute respiratory syndrome (SARS) epidemic and available published data concerning the COVID-19 pandemic. It addresses measures before, during and after endoscopy that must be considered for both non-infected and infected patients, and provides recommendations for practical implementation.
Betacoronavirus
;
Coronavirus Infections
;
epidemiology
;
transmission
;
Disease Transmission, Infectious
;
prevention & control
;
Endoscopy, Gastrointestinal
;
standards
;
Gastroenterologists
;
standards
;
Humans
;
Incidence
;
Pandemics
;
Pneumonia, Viral
;
epidemiology
;
transmission
;
Practice Guidelines as Topic
;
Risk Factors
;
Singapore
;
epidemiology
7.Cost-Effectiveness of Transcatheter Aortic Valve Implantation in Intermediate and Low Risk Severe Aortic Stenosis Patients in Singapore.
Ivandito KUNTJORO ; Edgar TAY ; Jimmy HON ; James YIP ; William KONG ; Kian Keong POH ; Tiong Cheng YEO ; Huay Cheem TAN ; Michael George CALEB ; Nan LUO ; Pei WANG
Annals of the Academy of Medicine, Singapore 2020;49(7):423-433
INTRODUCTION:
Singapore has the world's second most efficient healthcare system while costing less than 5% GDP. It remains unclear whether transcatheter aortic valve implantation (TAVI) is cost-effective for treating intermediate-low risk severe aortic stenosis (AS) patients in a highly efficient healthcare system.
MATERIALS AND METHODS:
A two-phase economic model combining decision tree and Markov model was developed to assess the costs, effectiveness, and the incremental cost-effectiveness ratio (ICER) of transfemoral (TF) TAVI versus surgical aortic valve replacement (SAVR) in intermediate-low risk patients over an 8-year time horizon. Mortality and complications rates were based on PARTNER 2 trial cohort A and Singapore life table. Costs were mainly retrieved from Singapore National University Health System database. Health utility data were obtained from Singapore population based on the EuroQol-5D (EQ-5D). A variety of sensitivity analyses were conducted.
RESULTS:
In base case scenario, the incremental effectiveness of TF-TAVI versus SAVR was 0.19 QALYs. The ICER of TF-TAVI was S$33,833/QALY. When time horizon was reduced to 5 years, the ICER was S$60,825/QALY; when event rates from the propensity analysis was used, the ICER was S$21,732/QALY and S$44,598/QALY over 8-year and 5-year time horizons, respectively. At a willingness to pay threshold of S$73,167/QALY, TF-TAVI had a 98.19% probability of being cost-effective after 100,000 simulations. The model was the most sensitive to the costs of TF-TAVI procedure.
CONCLUSION
TF-TAVI is a highly cost-effective option compared to SAVR for intermediate-low risk severe AS patients from a Singapore healthcare system perspective. Increased procedure experience, reduction in device cost, and technology advance may have further increased the cost-effectiveness of TF-TAVI per scenario analysis.
9.Percutaneous pulmonary valve implantation as an alternative to repeat open-heart surgery for patients with pulmonary outflow obstruction: a reality in Singapore.
Lik Wui Edgar TAY ; Wei Luen James YIP ; Ting Ting LOW ; Chin Ling William YIP ; Kok Fai William KONG ; Tiong Cheng YEO ; Huay Cheem TAN ; Shakeel Ahmed QUERESHI ; Swee Chye QUEK
Singapore medical journal 2019;60(5):260-264
Right ventricle to pulmonary artery (RV-PA) conduits have been used for the surgical repair of congenital heart defects. These conduits frequently become stenosed or develop insufficiency with time, necessitating reoperations. Percutanous pulmonary valve implantation (PPVI) can delay the need for repeated surgeries in patients with congenital heart defects and degenerated RV-PA conduits. We presented our first experience with PPVI and described in detail the procedural methods and the considerations that are needed for this intervention to be successful. Immediate and short-term clinical outcomes of our patients were reported. Good haemodynamic results were obtained, both angiographically and on echocardiography. PPVI provides an excellent alternative to repeat open-heart surgery for patients with congenital heart defects and degenerated RV-PA conduits. This represents a paradigm shift in the management of congenital heart disease, which is traditionally managed by open-heart surgery.

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