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Quek SXZ, Lee JWJ, Feng Z, Soh MM, Tokano M, Guan YK, So JBY, Tada T, Koh CJ. Comparing artificial intelligence to humans for endoscopic diagnosis of gastric neoplasia: An external validation study. J Gastroenterol Hepatol 2023; 38:1587-1591. [PMID: 37408330 DOI: 10.1111/jgh.16274] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 06/03/2023] [Accepted: 06/14/2023] [Indexed: 07/07/2023]
Abstract
OBJECTIVES Artificial intelligence (AI) uses deep learning functionalities that may enhance the detection of early gastric cancer during endoscopy. An AI-based endoscopic system for upper endoscopy was recently developed in Japan. We aim to validate this AI-based system in a Singaporean cohort. METHODS There were 300 de-identified still images prepared from endoscopy video files obtained from subjects that underwent gastroscopy in National University Hospital (NUH). Five specialists and 6 non-specialists (trainees) from NUH were assigned to read and categorize the images into "neoplastic" or "non-neoplastic." Results were then compared with the readings performed by the endoscopic AI system. RESULTS The mean accuracy, sensitivity, and specificity for the 11 endoscopists were 0.847, 0.525, and 0.872, respectively. These values for the AI-based system were 0.777, 0.591, and 0.791, respectively. While AI in general did not perform better than endoscopists on the whole, in the subgroup of high-grade dysplastic lesions, only 29.1% were picked up by the endoscopist rating, but 80% were classified as neoplastic by AI (P = 0.0011). The average diagnostic time was also faster in AI compared with endoscopists (677.1 s vs 42.02 s (P < 0.001). CONCLUSION We demonstrated that an AI system developed in another health system was comparable in diagnostic accuracy in the evaluation of static images. AI systems are faster and not fatigable and may have a role in augmenting human diagnosis during endoscopy. With more advances in AI and larger studies to support its efficacy it would likely play a larger role in screening endoscopy in future.
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Affiliation(s)
- Sabrina Xin Zi Quek
- Division of Gastroenterology and Hepatology, National University Hospital, Singapore
| | - Jonathan W J Lee
- Division of Gastroenterology and Hepatology, National University Hospital, Singapore
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- iHealthtech, National University of Singapore, Singapore
| | - Zhu Feng
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Min Min Soh
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | | | - Yeoh Khay Guan
- Division of Gastroenterology and Hepatology, National University Hospital, Singapore
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Jimmy B Y So
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Division of Surgery, National University Hospital, Singapore
| | - Tomohiro Tada
- AI Medical Service Inc, Japan
- Tada Tomohiro Institute of Gastroenterology and Proctology, Japan
| | - Calvin J Koh
- Division of Gastroenterology and Hepatology, National University Hospital, Singapore
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- The Gastroenterology Group, Gleneagles Hospital, Singapore, Singapore
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2
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Namasivayam V, Koh CJ, Tsao S, Lee J, Ling KL, Khor C, Lim T, Li JW, Oo AM, Yip BCH, Hussain I, Chua TS, Toh BC, Ong HS, Wang LM, So JBY, Teh M, Yeoh KG, Ang TL. Academy of Medicine, Singapore clinical guideline on endoscopic surveillance and management of gastric premalignant lesions. Ann Acad Med Singap 2022; 51:417-435. [PMID: 35906941 DOI: 10.47102/annals-acadmedsg.2021433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
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.
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Lee JWJ, Zhu F, Srivastava S, Tsao SKK, Khor C, Ho KY, Fock KM, Lim WC, Ang TL, Chow WC, So JBY, Koh CJ, Chua SJ, Wong ASY, Rao J, Lim LG, Ling KL, Chia CK, Ooi CJ, Rajnakova A, Yap WM, Salto-Tellez M, Ho B, Soong R, Chia KS, Teo YY, Teh M, Yeoh KG. Severity of gastric intestinal metaplasia predicts the risk of gastric cancer: a prospective multicentre cohort study (GCEP). Gut 2022; 71:854-863. [PMID: 33975867 PMCID: PMC8995828 DOI: 10.1136/gutjnl-2021-324057] [Citation(s) in RCA: 46] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 04/15/2021] [Accepted: 04/30/2021] [Indexed: 12/24/2022]
Abstract
OBJECTIVE To investigate the incidence of gastric cancer (GC) attributed to gastric intestinal metaplasia (IM), and validate the Operative Link on Gastric Intestinal Metaplasia (OLGIM) for targeted endoscopic surveillance in regions with low-intermediate incidence of GC. METHODS A prospective, longitudinal and multicentre study was carried out in Singapore. The study participants comprised 2980 patients undergoing screening gastroscopy with standardised gastric mucosal sampling, from January 2004 and December 2010, with scheduled surveillance endoscopies at year 3 and 5. Participants were also matched against the National Registry of Diseases Office for missed diagnoses of early gastric neoplasia (EGN). RESULTS There were 21 participants diagnosed with EGN. IM was a significant risk factor for EGN (adjusted-HR 5.36; 95% CI 1.51 to 19.0; p<0.01). The age-adjusted EGN incidence rates for patients with and without IM were 133.9 and 12.5 per 100 000 person-years. Participants with OLGIM stages III-IV were at greatest risk (adjusted-HR 20.7; 95% CI 5.04 to 85.6; p<0.01). More than half of the EGNs (n=4/7) attributed to baseline OLGIM III-IV developed within 2 years (range: 12.7-44.8 months). Serum trefoil factor 3 distinguishes (Area Under the Receiver Operating Characteristics 0.749) patients with OLGIM III-IV if they are negative for H. pylori. Participants with OLGIM II were also at significant risk of EGN (adjusted-HR 7.34; 95% CI 1.60 to 33.7; p=0.02). A significant smoking history further increases the risk of EGN among patients with OLGIM stages II-IV. CONCLUSIONS We suggest a risk-stratified approach and recommend that high-risk patients (OLGIM III-IV) have endoscopic surveillance in 2 years, intermediate-risk patients (OLGIM II) in 5 years.
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Affiliation(s)
- Jonathan W J Lee
- Division of Gastroenterology and Hepatology, National University Hospital, Singapore,Department of Medicine, National University of Singapore, Singapore,Singapore Gastric Cancer Consortium, Singapore
| | - Feng Zhu
- Department of Medicine, National University of Singapore, Singapore,Singapore Gastric Cancer Consortium, Singapore
| | | | - Stephen KK Tsao
- Department of Gastroenterology & Hepatology, Tan Tock Seng Hospital, Singapore
| | - Christopher Khor
- Department of Gastroenterology & Hepatology, Singapore General Hospital, Singapore
| | - Khek Yu Ho
- Division of Gastroenterology and Hepatology, National University Hospital, Singapore,Department of Medicine, National University of Singapore, Singapore
| | - Kwong Ming Fock
- Department of Gastroenterology & Hepatology, Changi General Hospital, Singapore
| | - Wee Chian Lim
- Department of Gastroenterology & Hepatology, Tan Tock Seng Hospital, Singapore
| | - Tiing Leong Ang
- Department of Gastroenterology & Hepatology, Changi General Hospital, Singapore
| | - Wan Cheng Chow
- Department of Gastroenterology & Hepatology, Singapore General Hospital, Singapore
| | - Jimmy Bok Yan So
- Singapore Gastric Cancer Consortium, Singapore,Department of Surgery, National University of Singapore, Singapore
| | - Calvin J Koh
- Division of Gastroenterology and Hepatology, National University Hospital, Singapore,Department of Medicine, National University of Singapore, Singapore,Singapore Gastric Cancer Consortium, Singapore
| | - Shijia Joy Chua
- Department of Medicine, National University of Singapore, Singapore
| | | | - Jaideepraj Rao
- Department of Surgery, Tan Tock Seng Hospital, Singapore
| | | | | | | | | | - Andrea Rajnakova
- Andrea's Digestive, Colon, Liver and Gallbladder Clinic Pte Ltd, Singapore
| | - Wai Ming Yap
- Department of Pathology, Tan Tock Seng Hospital, Singapore
| | - Manuel Salto-Tellez
- Precision Medicine Centre of Excellence, Queen's University Belfast, Belfast, UK,Integrated Pathology Unit, Institute of Cancer Research, London, UK
| | - Bow Ho
- Department of Microbiology, National University of Singapore, Singapore
| | - Richie Soong
- Cancer Science Institute of Singapore, National University of Singapore, Singapore,Department of Pathology, National University of Singapore, Singapore,Pascific Laboratories, Singapore
| | - Kee Seng Chia
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore
| | - Yik Ying Teo
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore
| | - Ming Teh
- Singapore Gastric Cancer Consortium, Singapore,Department of Pathology, National University of Singapore, Singapore
| | - Khay-Guan Yeoh
- Division of Gastroenterology and Hepatology, National University Hospital, Singapore .,Department of Medicine, National University of Singapore, Singapore.,Singapore Gastric Cancer Consortium, Singapore
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Tan EXX, Lee JWJ, Jumat NH, Chan WK, Treeprasertsuk S, Goh GBB, Fan JG, Song MJ, Charatcharoenwitthaya P, Duseja A, Imajo K, Nakajima A, Seki Y, Kasama K, Kakizaki S, Lesmana LA, Zheng KI, Zheng MH, Koh CJ, Ho KY, Goh KL, Wong VWS, Dan YY. Non-obese non-alcoholic fatty liver disease (NAFLD) in Asia: an international registry study. Metabolism 2022; 126:154911. [PMID: 34648769 DOI: 10.1016/j.metabol.2021.154911] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 10/06/2021] [Accepted: 10/07/2021] [Indexed: 02/06/2023]
Abstract
BACKGROUND A significant proportion of the non-alcoholic fatty liver disease (NAFLD) population is non-obese. Prior studies reporting the severity of NAFLD amongst non-obese patients were heterogenous. Our study, using data from the largest biopsy-proven NAFLD international registry within Asia, aims to characterize the demographic, metabolic and histological differences between non-obese and obese NAFLD patients. METHODS 1812 biopsy-proven NAFLD patients across nine countries in Asia assessed between 2006 and 2019 were pooled into a curated clinical registry. Demographic, metabolic and histological differences between non-obese and obese NAFLD patients were evaluated. The performance of Fibrosis-4 index for liver fibrosis (FIB-4) and NAFLD fibrosis score (NFS) to identify advanced liver disease across the varying obesity subgroups was compared. A random forest analysis was performed to identify novel predictors of fibrosis and steatohepatitis in non-obese patients. FINDINGS One-fifth (21.6%) of NAFLD patients were non-obese. Non-obese NAFLD patients had lower proportions of NASH (50.5% vs 56.5%, p = 0.033) and advanced fibrosis (14.0% vs 18.7%, p = 0.033). Metabolic syndrome in non-obese individuals was associated with NASH (OR 1.59, 95% CI 1.01-2.54, p = 0.047) and advanced fibrosis (OR 1.88, 95% CI 0.99-3.54, p = 0.051). FIB-4 performed better than the NFS score (AUROC 81.5% vs 73.7%, p < 0.001) when classifying patients with F2-4 fibrosis amongst non-obese NAFLD patients. Haemoglobin, GGT, waist circumference and cholesterol are additional variables found on random forest analysis useful for identifying non-obese NAFLD patients with advanced liver disease. CONCLUSION A substantial proportion of non-obese NAFLD patients has NASH or advanced fibrosis. FIB-4, compared to NFS better identifies non-obese NAFLD patients with advanced liver disease. Serum GGT, cholesterol, haemoglobin and waist circumference, which are neither components of NFS nor FIB-4, are important biomarkers for advanced liver disease in non-obese patients.
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Affiliation(s)
- Eunice Xiang-Xuan Tan
- Division of Gastroenterology and Hepatology, National University Health System, Singapore; Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Jonathan Wei-Jie Lee
- Division of Gastroenterology and Hepatology, National University Health System, Singapore; Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Nur Halisah Jumat
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | | | | | | | - Jian-Gao Fan
- Shanghai Jiaotong University School of Medicine, Shanghai, China
| | | | | | - Ajay Duseja
- Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Kento Imajo
- Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Atsushi Nakajima
- Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | | | | | - Satoru Kakizaki
- Department of Gastroenterology and Hepatology, Gunma University Graduate School of Medicine, Japan
| | | | - Kenneth I Zheng
- NAFLD Research Center, Department of Hepatology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Ming-Hua Zheng
- NAFLD Research Center, Department of Hepatology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Calvin J Koh
- Division of Gastroenterology and Hepatology, National University Health System, Singapore; Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Khek-Yu Ho
- Division of Gastroenterology and Hepatology, National University Health System, Singapore; Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | | | | | - Yock-Young Dan
- Division of Gastroenterology and Hepatology, National University Health System, Singapore; Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
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5
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Ong SJ, Anil G, Chia KL, Khoo D, Lee JK, Chen PX, Nares TM, Koh CJ, Su P, Yang C, Singh P, Rajendran PC, Fotheringham T, Quek ST, Renfrew I. The effectiveness of the Safety in Interventional Radiology (SIR) Shield in reducing droplet transmission and its effect on image quality and radiation dose. Br J Radiol 2021; 95:20210835. [PMID: 34672690 PMCID: PMC8722246 DOI: 10.1259/bjr.20210835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Objective: To evaluate the efficacy of a barrier shield in reducing droplet transmission and its effect on image quality and radiation dose in an interventional suite. Methods: A human cough droplet visualisation model in a supine position was developed to assess efficacy of barrier shield in reducing environmental contamination. Its effect on image quality (resolution and contrast) was evaluated via image quality test phantom. Changes in the radiation dose to patient post-shield utilisation was measured. Results: Use of the shield prevented escape of visible fluorescent cough droplets from the containment area. No subjective change in line-pair resolution was observed. No significant difference in contrast-to-noise ratio was measured. Radiation dosage to patient was increased; this is predominantly attributed to the increased air gap and not the physical properties of the shield. Conclusion: Use of the barrier shield provided an effective added layer of personal protection in the interventional radiology theatre for aerosol generating procedures. Advances in knowledge: This is the first time a human supine cough droplet visualisation has been developed. While multiple types of barrier shields have been described, this is the first systematic practical evaluation of a barrier shield designed for use in the interventional radiology theatre.
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Affiliation(s)
- Shao Jin Ong
- Department of Diagnostic Imaging, National University Hospital Singapore, Singapore, Singapore
| | - Gopinathan Anil
- Department of Diagnostic Imaging, National University Hospital Singapore, Singapore, Singapore.,Department of Diagnostic Radiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Koon Liang Chia
- Department of Diagnostic Imaging, National University Hospital Singapore, Singapore, Singapore
| | - Deborah Khoo
- Department of Anaesthesia, National University Hospital Singapore, Singapore, Singapore
| | - Joseph Kt Lee
- Department of Diagnostic Imaging, National University Hospital Singapore, Singapore, Singapore.,Department of Radiology, The University of North Carolina, Chapel Hill, North Carolina, USA
| | - Priscilla Xh Chen
- Department of Diagnostic Imaging, National University Hospital Singapore, Singapore, Singapore
| | - Teddy M Nares
- Department of Diagnostic Imaging, National University Hospital Singapore, Singapore, Singapore
| | - Calvin J Koh
- Dept of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Division of Gastroenterology and Hepatology, National University Hospital Singapore, Singapore, Singapore
| | - Peijing Su
- Department of Medicine, National University Hospital Singapore, Singapore, Singapore
| | - Cunli Yang
- Department of Diagnostic Imaging, National University Hospital Singapore, Singapore, Singapore
| | - Pavel Singh
- Department of Diagnostic Imaging, National University Hospital Singapore, Singapore, Singapore
| | - Prapul C Rajendran
- Department of Diagnostic Imaging, National University Hospital Singapore, Singapore, Singapore
| | - Timothy Fotheringham
- Department of Radiology, Royal London Hospital, Barts Health NHS Trust, London, United Kingdom
| | - Swee T Quek
- Department of Diagnostic Imaging, National University Hospital Singapore, Singapore, Singapore
| | - Ian Renfrew
- Department of Radiology, Royal London Hospital, Barts Health NHS Trust, London, United Kingdom
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Affiliation(s)
- Calvin J Koh
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Division of Gastroenterology and Hepatology, Department of Medicine and, National University of Singapore, Singapore, Singapore
| | - Deborah Khoo
- Department of Anaesthesia, National University of Singapore, Singapore, Singapore.,Department of Anaesthesia, National University Hospital, Singapore, Singapore
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Bong SH, Tan BW, Yong JM, Ng LS, Koh CJ. Bleeding on the Edge-The Use of Hemostatic Powder for Treating a Bleeding Hypopharyngeal Tumor. Clin Endosc 2020; 54:441-442. [PMID: 32810978 PMCID: PMC8182254 DOI: 10.5946/ce.2020.159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 06/24/2020] [Indexed: 12/04/2022] Open
Affiliation(s)
- Shirley H Bong
- Division of Gastroenterology and Hepatology, National University Hospital, Singapore, Singapore
| | - Bernice W Tan
- Division of Gastroenterology and Hepatology, National University Hospital, Singapore, Singapore
| | - Jui May Yong
- Department of Otorhinolaryngology, National University Hospital, Singapore, Singapore
| | - Li Shia Ng
- Department of Otorhinolaryngology, National University Hospital, Singapore, Singapore
| | - Calvin J Koh
- Division of Gastroenterology and Hepatology, National University Hospital, Singapore, Singapore.,Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
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8
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Affiliation(s)
- Calvin J Koh
- Division of Gastroenterology and Hepatology, Medicine, National University Hospital, Singapore
- Faculty of Medicine, National University of Singapore, Singapore
| | - Eunice X X Tan
- Division of Gastroenterology and Hepatology, Medicine, National University Hospital, Singapore
- Faculty of Medicine, National University of Singapore, Singapore
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9
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Nassr AA, Shamshirsaz AA, Erfani H, Espinoza J, Sanz Cortes M, Koh CJ, Roth DR, Angelo JR, Mandy GT, Braun MC, Ruano R, Belfort MA. Outcome of fetuses with lower urinary tract obstruction and normal amniotic fluid volume in second trimester of pregnancy. Ultrasound Obstet Gynecol 2019; 54:500-505. [PMID: 30977189 DOI: 10.1002/uog.20288] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 03/15/2019] [Accepted: 04/05/2019] [Indexed: 06/09/2023]
Abstract
OBJECTIVE Congenital lower urinary tract obstruction (LUTO) is a rare condition with high perinatal mortality and morbidity when associated with severe oligohydramnios or anhydramnios in the second trimester of pregnancy. Severe pulmonary hypoplasia and end-stage renal disease are the underlying causes of poor neonatal outcome in these cases. However, little is known about the subset of fetal LUTO that is associated with a normal volume of amniotic fluid at midgestation. The objective of the current study was to describe the natural history, underlying causes, survival and postnatal renal function outcomes in pregnancies with fetal LUTO and normal amniotic fluid volume during the second trimester of pregnancy. METHODS This was a retrospective study of all pregnancies with fetal LUTO and normal amniotic fluid volume in the second trimester that received prenatal and postnatal care at our quaternary care institution between 2013 and 2017. Data on demographic characteristics, fetal interventions, perinatal survival, need for neonatal respiratory support, postnatal renal function and need for dialysis at the age of 1 and 24 months were analyzed. RESULTS Of the 18 fetuses that met the study criteria, 17 (94.4%) survived the perinatal period. Eleven (61.1%) pregnancies developed oligohydramnios in the third trimester, six of which were eligible for and underwent fetal intervention with vesicoamniotic shunt placement, which was performed successfully in all six cases. Two (11.1%) neonates required respiratory support owing to pulmonary hypoplasia. At the age of 2 years, 14 children had follow-up information available, two (14.3%) of whom had normal renal function, eight (57.1%) had developed some degree of chronic kidney disease (Stage 1-4) and four (28.6%) had developed end-stage renal disease (ESRD), including two who had already manifested ESRD in the neonatal period. CONCLUSIONS Most fetuses diagnosed prenatally with LUTO that is associated with a normal volume of amniotic fluid at midgestation will have a favorable outcome in terms of perinatal survival and few will need long-term respiratory support. However, these children are still at increased risk for chronic renal disease, ESRD and need for renal replacement therapy. Larger multicenter studies are needed to characterize the prenatal factors associated with postnatal renal function, and to investigate the role of fetal intervention in the group of fetuses that present with late-onset oligohydramnios and evidence of preserved fetal renal function. Copyright © 2019 ISUOG. Published by John Wiley & Sons Ltd.
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Affiliation(s)
- A A Nassr
- Department of Obstetrics and Gynecology, Baylor College of Medicine and Texas Children's Fetal Center, Houston, TX, USA
- Department of Obstetrics and Gynecology, Women's Health Hospital, Assiut University, Assiut, Egypt
| | - A A Shamshirsaz
- Department of Obstetrics and Gynecology, Baylor College of Medicine and Texas Children's Fetal Center, Houston, TX, USA
| | - H Erfani
- Department of Obstetrics and Gynecology, Baylor College of Medicine and Texas Children's Fetal Center, Houston, TX, USA
| | - J Espinoza
- Department of Obstetrics and Gynecology, Baylor College of Medicine and Texas Children's Fetal Center, Houston, TX, USA
| | - M Sanz Cortes
- Department of Obstetrics and Gynecology, Baylor College of Medicine and Texas Children's Fetal Center, Houston, TX, USA
| | - C J Koh
- Division of Pediatric Urology, Baylor College of Medicine and Texas Children's Fetal Center, Houston, TX, USA
| | - D R Roth
- Division of Pediatric Urology, Baylor College of Medicine and Texas Children's Fetal Center, Houston, TX, USA
| | - J R Angelo
- Renal Section, Department of Pediatrics, Baylor College of Medicine and Texas Children's Fetal Center, Houston, TX, USA
| | - G T Mandy
- Department of Pediatrics, Baylor College of Medicine and Texas Children's Fetal Center, Houston, TX, USA
| | - M C Braun
- Renal Section, Department of Pediatrics, Baylor College of Medicine and Texas Children's Fetal Center, Houston, TX, USA
| | - R Ruano
- Department of Obstetrics and Gynecology, Mayo Clinic Fetal Diagnostic and Therapeutic Center, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - M A Belfort
- Department of Obstetrics and Gynecology, Baylor College of Medicine and Texas Children's Fetal Center, Houston, TX, USA
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10
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Ang JW, Koh CJ, Chua BW, Narayanaswamy S, Wijaya L, Chan LG, Soh LL, Goh WL, Vasoo S. Are migrant workers in Singapore receiving adequate healthcare? A survey of doctors working in public tertiary healthcare institutions. Singapore Med J 2019; 61:540-547. [PMID: 31489436 DOI: 10.11622/smedj.2019101] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
INTRODUCTION Migrant workers comprise about one-fifth of Singapore's resident population and form a substantial and vital component of the nation's workforce. However, limited data is available regarding the barriers that migrant workers face in accessing healthcare from the healthcare providers' perspective. METHODS We conducted a survey on doctors working in four restructured hospitals in Singapore, to assess what they perceived to be barriers faced by migrant workers in accessing healthcare. We also assessed the doctors' understanding of migrant-health-related policies in Singapore. RESULTS A total of 427 survey responses were collected. Most respondents were senior doctors (senior residents or consultants) who had been practising medicine for a median of ten years. Among doctors, the most common perceived barriers to migrant workers accessing healthcare were related to culture/language (92.3%) and finances (healthcare cost) (81.0%). Of the six questions asked pertaining to migrant healthcare policy in Singapore, the respondents achieved a median of four correctly answered questions (interquartile range 3-5), and about 55% were unaware or unsure of available resources for migrant workers. CONCLUSION Our study identified healthcare providers' perceived barriers to the delivery of healthcare to migrant workers, which corroborate previously published data reported by migrant workers themselves. Further efforts should be directed towards diminishing these barriers and increasing the literacy of migrant health among healthcare workers.
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Affiliation(s)
- Jia Wei Ang
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
| | - Calvin J Koh
- Division of Gastroenterology and Hepatology, National University Hospital, National University Health System, Singapore
| | - Brandon Wb Chua
- Department of Pharmacy, KK Women's and Children's Hospital, Singapore
| | | | - Limin Wijaya
- Department of Infectious Diseases, Singapore General Hospital, Singapore
| | - Lai Gwen Chan
- Department of Psychiatry, Tan Tock Seng Hospital, Singapore
| | - Ling Ling Soh
- Division of Medicine, Sengkang General Hospital, Singapore
| | | | - Shawn Vasoo
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore.,Department of Infectious Diseases, Tan Tock Seng Hospital, Singapore.,National Centre for Infectious Diseases, Singapore
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Abstract
Probiotics are ubiquitous, consumption by the general public is common, and the dogma remains that they are beneficial for general and gut health. However, evolving evidence suggests a potentially "harmful" impact of many commercially available probiotics. There is also significant variability in formulations that leads to a lack of a universally acceptable definition of probiotics. In this perspective, we review the flaws with definition, relevant observational and randomized studies that showed both positive and negative impacts on health and disease, unbiased interpretation of key trials, emerging evidence from microbiome and immuno-oncological studies, and impact on systemic immunity. We propose that caution be exercised prior to endorsements of their illness-directed consumption and rampant general usage. As a deeper understanding of the human microbiome accrues and our ability to manipulate this complex ecosystem improves, the probiotic of tomorrow might be the precision tool that deals with diseases on a broad front. Gut microbiome, akin to fingerprints, is indigenous to an individual and 'one size fits all' prescription strategy should be discouraged until a more universally acceptable 'favorable taxa' or a 'personalized probiotic,' to complement an individual's native microbiota, gets fashioned.
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Affiliation(s)
- Muhammad Bilal Abid
- Divisions of Hematology/Oncology & Infectious Diseases, Department of Medicine, Medical College of Wisconsin, Hub for Collaborative Medicine, 8701 Watertown Plank Road, Milwaukee, WI, 53226, USA.
| | - Calvin J Koh
- Division of Gastroenterology and Hepatology, Department of Medicine, National University Hospital, Singapore, Singapore
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Gerber JA, Balasubramanian A, Jorgez CJ, Shukla MA, Jacob JS, Zhu H, Sheth KR, Mittal A, Tu DD, Koh CJ, Janzen N, Wang MH, Austin PF, Gonzales ET, Roth DR, Seth A. Do pediatricians routinely perform genitourinary examinations during well-child visits? A review from a large tertiary pediatric hospital. J Pediatr Urol 2019; 15:374.e1-374.e5. [PMID: 31229415 DOI: 10.1016/j.jpurol.2019.05.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 05/07/2019] [Indexed: 10/26/2022]
Abstract
BACKGROUND The male genital examination is a common source of discomfort for the patient and medical provider. Performance of male genital examination is imperative; however, as many treatable diagnoses can be made. Undescended testicles (UDTs), hernias, testicular tumors, and urethral abnormalities are all potentially concerning findings which can be discovered on routine examination. OBJECTIVE The objectives of this study are to determine the rate at which general pediatricians perform routine genitourinary (GU) examinations in the pediatric population and to determine the rate at which UDT are diagnosed or documented in the patient's history. The authors hypothesize the rate of pediatric GU examination during routine well-child visits to be in line with the previously reported rates in the adult literature. STUDY DESIGN Nine hundred ninety-six consecutive male well-child visits conducted by general pediatricians at the study institution were reviewed. These visits were evaluated for documentation of a detailed GU examination as well as the presence of UDT from these examinations. In addition, past medical and surgical histories were reviewed to determine if a diagnosis of UDT was noted. RESULTS Pediatricians at the study institution documented GU examinations 99.1% of the time during male well-child visits. Only 1.1% of the cohort had a documentation of UDT at any time point. Of the 11 patients with UDT, 6 boys (54.5%) had spontaneous descent with no referral to urology, whereas 5 (45.5%) required orchidopexy. DISCUSSION Prior reports suggest 70-75% of routine office visits include a genital examination. None of these reports reviewed the pediatric population, thus making this review novel in this respect. In addition, the results are vastly different from these prior studies as the authors demonstrated over 99% of male well-child examinations included documentation of a thorough genital examination. A limitation of the study is its retrospective nature, which creates a lack of standardization across the data set. In addition, without being physically present in the examination room, one cannot discern whether an examination is simply being documented without actual performance because of the template format of the electronic medical record (EMR). Furthermore, the study was not designed to best evaluate the true rate of UDTs; therefore, the reported rate of 1.1% cannot be accurately associated with a particular age at diagnosis. CONCLUSIONS Pediatricians do, in fact, document GU examinations on a routine basis. This finding cannot be taken with complete certainty as verification of actual examination performance is impractical. While the data demonstrated a lower than expected rate of UDT, depending upon age at diagnosis, this could indicate that although examinations are being documented, their accuracy may be diminished because of various factors at play in the healthcare system as a whole, including improper exam performance and EMR templates. Follow-up studies are required to verify these potentially changing rates of UDT and to determine if there is discordance between documentation and performance of GU examinations.
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Affiliation(s)
- J A Gerber
- Division of Pediatric Urology, Department of Surgery, Texas Children's Hospital, Houston, TX, USA; Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
| | - A Balasubramanian
- Division of Pediatric Urology, Department of Surgery, Texas Children's Hospital, Houston, TX, USA
| | - C J Jorgez
- Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
| | - M A Shukla
- Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
| | - J S Jacob
- Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
| | - H Zhu
- Division of Pediatric Urology, Department of Surgery, Texas Children's Hospital, Houston, TX, USA
| | - K R Sheth
- Division of Pediatric Urology, Department of Surgery, Texas Children's Hospital, Houston, TX, USA; Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
| | - A Mittal
- Division of Pediatric Urology, Department of Surgery, Texas Children's Hospital, Houston, TX, USA; Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
| | - D D Tu
- Division of Pediatric Urology, Department of Surgery, Texas Children's Hospital, Houston, TX, USA; Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
| | - C J Koh
- Division of Pediatric Urology, Department of Surgery, Texas Children's Hospital, Houston, TX, USA; Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
| | - N Janzen
- Division of Pediatric Urology, Department of Surgery, Texas Children's Hospital, Houston, TX, USA; Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
| | - M-H Wang
- Division of Pediatric Urology, Department of Surgery, Texas Children's Hospital, Houston, TX, USA; Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
| | - P F Austin
- Division of Pediatric Urology, Department of Surgery, Texas Children's Hospital, Houston, TX, USA; Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
| | - E T Gonzales
- Division of Pediatric Urology, Department of Surgery, Texas Children's Hospital, Houston, TX, USA; Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
| | - D R Roth
- Division of Pediatric Urology, Department of Surgery, Texas Children's Hospital, Houston, TX, USA; Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
| | - A Seth
- Division of Pediatric Urology, Department of Surgery, Texas Children's Hospital, Houston, TX, USA; Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA.
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Zhou L, So J, Kapoor R, Zhu F, Zou R, Koh CJ, Rha SY, Chung HC, Yoong J, Yap CT, Rao J, Chia CK, Tsao S, Shabbir A, Lam KP, Hartman M, Yong WP, Too HP, Yeoh KG. Prospective validation of a serum miRNA panel for early detection of gastric cancer. J Clin Oncol 2019. [DOI: 10.1200/jco.2019.37.15_suppl.4065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
4065 Background: High mortality from gastric cancer is related to the late manifestation of its symptoms. A blood-based non-invasive biomarker with the ability to detect all stages of gastric cancer could significantly improve patient outcomes. We aimed to develop a novel serum miRNA assay for diagnosis of gastric cancer. Methods: We conducted a multi-center study involving 892 gastric cancer and control subjects from Singapore and Korea to develop a multi-target miRNA assay. Using RT-qPCR, we quantified the expressions of 578 serum miRNAs and constructed a 12-miR biomarker panel through multi-variant data analysis. The results were generated with the use of a logistic-regression algorithm, with the value of 40 or more considered to be positive. We subsequently validated this multi-miR assay in a large prospective cohort involving 4566 subjects and compared its performance with traditional markers such as H.Pylori and Pepsinogen. All participants underwent gastroscopy independent of the assay results. Results: Of the 4566 subjects that underwent gastroscopy and histopathological examination in the prospective cohort, 125 were diagnosed with gastric cancer. The 12-miR assay achieved an Area-Under-Curve (AUC) of 0.84, significantly outperforming (p-value < 0.01) that of H.Pylori (AUC of 0.64) and Pepsinogen (AUC of 0.62). The sensitivity of the miRNA assay in detecting early (stage 0-2) and late (stage 3-4) stage gastric cancer was 82.6% (95% CI, 68.6% to 92.2%) and 88.4% (95% CI, 78.4% to 94.9%) respectively at a specificity of 70.0% (95% CI, 67.8% to 71.9%). In comparison, H.Pylori showed a sensitivity of 80.4% at a specificity of 44.3% whereas the Pepsinogen showed sensitivity of 9.52% at a specificity of 95.3%. Using the miRNA assay as a pre-screening tool could potentially reduce number of endoscopy needed by 62% in detecting one case of gastric cancer. Conclusions: Our serum miRNA panel is a useful, non-invasive screening test for gastric cancer. It is cost-effective as it can reduce unnecessary diagnostic endoscopy.
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Affiliation(s)
| | - Jimmy So
- National University Hospital, Singapore, Singapore
| | - Ritika Kapoor
- National University of Singapore, Singapore, Singapore
| | - Feng Zhu
- National University of Singapore, Singapore, Singapore
| | | | - Calvin J Koh
- National University Health System, Singapore Division of Gastroenterology & Hepatology, Singapore, Singapore
| | - Sun Young Rha
- Yonsei University College of Medicine, Seoul, South Korea
| | - Hyun Cheol Chung
- Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, South Korea
| | - Joanne Yoong
- National University of Singapore, Singapore, Singapore
| | | | | | | | | | - Asim Shabbir
- Department of Surgery, National University Hospital, Singapore, Singapore
| | | | | | - Wei Peng Yong
- National University Cancer Institute, Singapore, Singapore
| | - Heng-Phon Too
- Agency for Science, Technology and Research (A-STAR), Singapore, Singapore
| | - Khay Guan Yeoh
- Department of Medicine, Yong Loo Lin School of Medicine, Singapore, Singapore
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Wang LC, Mittal AG, Puttmann K, Janzen N, Palmer LS, Yerkes EB, Ryan SL, Gonzales ET, Roth DR, Koh CJ. The changing gender landscape of pediatric urology fellowship: results from a survey of fellows and recent graduates. J Pediatr Urol 2019; 15:51-57. [PMID: 30340928 DOI: 10.1016/j.jpurol.2018.09.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 09/04/2018] [Indexed: 10/28/2022]
Abstract
INTRODUCTION Women are entering the subspecialty of pediatric urology at an accelerated rate. Gender differences affecting fellowship and job selection have been identified in other fields of medicine. OBJECTIVE The objective of this study was to understand gender differences in pediatric urology fellowship and job selection and how they may affect the workforce. STUDY DESIGN A 47-question electronic survey consisting of questions regarding demographics, residency training, and factors influencing fellowship and job selection was distributed to current fellows and recent graduates in pediatric urology in May 2017. RESULTS A total of 111 recent and current fellows were contacted, and 72% completed the survey (55% female [F] and 45% male [M]; 61% current fellows and 39% recent fellows). Respondents rated factors important in choosing pediatric urology on a scale of 1-5 (1, not important and 5, extremely important), and the top three for both genders were 1-working with children, 2-influential mentors, and 3-bread and butter cases such as inguinal orchiopexy. During residency, 93% of respondents reported having influential mentors in pediatric urology. However, mentorship was more important in fellowship choice for males than females (3.6 F, 4.1 M; P-value = 0.048), and 45% reported having only male mentors. Rating factors important in job choice on a scale of 1-5, respondents reported the top factors as 1-rapport with partners/mentorship (4.5), 2-geography/family preferences (4.3), and 3-participation in mentoring/teaching (3.8). Although most job selection criteria were rated similarly between genders, females rated call schedule higher than males (3.5 F, 2.9 M, P-value = 0.009). Although most females and males (79% of F, 78% of M, P-value = 0.868) sought primarily academic positions, a smaller proportion of females accepted academic positions (52% of F, 72% of M, P-value 0.26), and females reported lower satisfaction regarding the availability of jobs on a scale of 1-5 (1, very dissatisfied and 5, very satisfied; 3.1 F, 3.7 M; P-value = 0.034), particularly in academic positions (3.1 F, 3.7 M; P-value = 0.06). This difference was more pronounced in current fellows than recent graduates and may represent a worsening trend. CONCLUSION Although significant gender differences in fellowship and job selection may exist in other fields, we found that women and men choose pediatric urology fellowships and jobs using similar criteria, which include work-life balance. Gender differences exist in the influence of mentors, indicating a need for more female mentors. While men and women sought similar types of jobs, women were less satisfied with the availability of jobs, particularly academic jobs, than men, which warrants further investigation.
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Affiliation(s)
- L C Wang
- Division of Pediatric Urology, Texas Children's Hospital, Houston TX, USA.
| | - A G Mittal
- Division of Pediatric Urology, Texas Children's Hospital, Houston TX, USA
| | - K Puttmann
- Division of Pediatric Urology, Texas Children's Hospital, Houston TX, USA
| | - N Janzen
- Division of Pediatric Urology, Texas Children's Hospital, Houston TX, USA
| | - L S Palmer
- Department of Pediatric Urology, Cohen Children's Medical Center of New York, New Hyde Park NY, USA
| | - E B Yerkes
- Division of Urology, Lurie's Children's Hospital, Chicago IL, USA
| | - S L Ryan
- Division of Pediatric Urology, Texas Children's Hospital, Houston TX, USA
| | - E T Gonzales
- Division of Pediatric Urology, Texas Children's Hospital, Houston TX, USA
| | - D R Roth
- Division of Pediatric Urology, Texas Children's Hospital, Houston TX, USA
| | - C J Koh
- Division of Pediatric Urology, Texas Children's Hospital, Houston TX, USA
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Capozza N, Gulia C, Heidari Bateni Z, Zangari A, Gigli S, Briganti V, Tursini S, Koh CJ, Gaffi M, Baldassarra S, Signore F, Porrello A, Piergentili R. Vesicoureteral reflux in infants: what do we know about the gender prevalence by age? Eur Rev Med Pharmacol Sci 2018; 21:5321-5329. [PMID: 29243800 DOI: 10.26355/eurrev_201712_13916] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Vesicoureteral reflux (VUR) affects up to 1% of Caucasian children. Primary VUR is characterized by failure of the ureterovesicular junction to prevent urine from traveling in a retrograde fashion from the bladder to the ureters and the kidneys. Several reports in the literature describe the prevalence of this condition in pediatric patients; overall, VUR affects more males during infancy and with higher grades. However, a thorough consideration of these articles reveals important contradictions regarding the prevalence by gender and age. We analyzed those contradictions and suggested a possible explanation based on our single center experience with this patient group. In particular, for the age interval 0-2 years: we have found that (1) VUR mostly affects boys; (2) the male/female ratio steadily declines over time; (3) the unequal prevalence between males and females essentially disappears when children reach the age of two years. CONCLUSIONS The natural history of VUR in infant boys differs from that of infant girls, and therefore requires a gender-specific approach. Available data support the need to redefine the categorization and clinical guidelines for this disease.
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Affiliation(s)
- N Capozza
- Urologic Surgery Unit, Pediatric Hospital "Bambino Gesù", Rome, Italy.
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16
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Imani PD, White JT, Michael M, Puttmann KT, O'Mahony CA, Koh CJ. Midpole Ureterocalycostomy for Renal Transplant Salvage: A Pediatric Case Report. Transplant Proc 2018; 50:887-890. [PMID: 29661459 DOI: 10.1016/j.transproceed.2018.01.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2018] [Accepted: 01/29/2018] [Indexed: 11/19/2022]
Abstract
BACKGROUND Ureteral obstruction is the most common urological complication of kidney transplantation. Obstruction secondary to ureteral stenosis can be an early or late complication. CASE REPORT We present a patient in whom ureteral obstruction was initially identified at 2.5 months after transplant for which she underwent a midpole ureterocalycostomy between the midpole calyx of the transplant kidney and the native left ureter.
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Affiliation(s)
- P D Imani
- Renal Section, Department of Pediatrics, Texas Children's Hospital/Baylor College of Medicine, Houston, Texas.
| | - J T White
- Division of Pediatric Urology, Department of Surgery, Texas Children's Hospital, and Scott Department of Urology, Baylor College of Medicine, Houston, Texas
| | - M Michael
- Renal Section, Department of Pediatrics, Texas Children's Hospital/Baylor College of Medicine, Houston, Texas
| | - K T Puttmann
- Division of Pediatric Urology, Department of Surgery, Texas Children's Hospital, and Scott Department of Urology, Baylor College of Medicine, Houston, Texas
| | - C A O'Mahony
- Division of Abdominal Transplantation of the Michael E. DeBakey, Baylor College of Medicine, Houston, Texas
| | - C J Koh
- Division of Pediatric Urology, Department of Surgery, Texas Children's Hospital, and Scott Department of Urology, Baylor College of Medicine, Houston, Texas
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Puttmann K, Huang GO, White JT, Kukreja K, Seth A, Koh CJ. Infant crossed renal ectopia with UPJ obstruction repaired via robot-assisted laparoscopic pyeloplasty. J Pediatr Urol 2018; 14:75-76. [PMID: 29133165 DOI: 10.1016/j.jpurol.2017.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 10/02/2017] [Indexed: 10/18/2022]
Abstract
INTRODUCTION We present a robot-assisted approach to surgical treatment of UPJ obstruction associated with crossed renal ectopia in a male infant. METHODS A 31 year-old woman presented at 37 weeks gestation for prenatal hydronephrosis and delivered at 39 weeks. Renal ultrasound identified the bladder and right kidney in a crossed ectopic position in the left pelvis, and MRI showed the cystic lesion to be hydronephrosis associated with a ureteropelvic junction obstruction of the crossed ectopic right kidney. At three months of age, a robot-assisted laparoscopic dismembered pyeloplasty was performed. Post-operative renal ultrasounds at one, two, and 7 months showed persistent but decreasing hydronephrosis. He remains asymptomatic. DISCUSSION Crossed renal ectopia with associated ureteropelvic junction obstruction has been reported in the literature and managed using both open and minimally invasive approaches. To our knowledge, this is the first reported robot-assisted pyeloplasty performed for this condition in an infant. CONCLUSIONS With careful patient selection, the robot-assisted laparoscopic approach can be applied to infants that require pyeloplasty for kidneys with anomalous development that have evidence of ureteropelvic junction obstruction.
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Affiliation(s)
- K Puttmann
- Texas Children's Hospital/Baylor College of Medicine, Houston, TX, USA
| | - G O Huang
- Texas Children's Hospital/Baylor College of Medicine, Houston, TX, USA
| | - J T White
- Texas Children's Hospital/Baylor College of Medicine, Houston, TX, USA
| | - K Kukreja
- Texas Children's Hospital/Baylor College of Medicine, Houston, TX, USA
| | - A Seth
- Texas Children's Hospital/Baylor College of Medicine, Houston, TX, USA
| | - C J Koh
- Texas Children's Hospital/Baylor College of Medicine, Houston, TX, USA.
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18
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Lean LL, Samuel M, Koh CJ, Ibrahim I, See KC. Endoscopic versus surgical palliation for malignant distal bile duct obstruction. Hippokratia 2017. [DOI: 10.1002/14651858.cd012758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Lyn Li Lean
- National University Hospital; Department of Anaesthesia; 5 Lower Kent Ridge Road Singapore Singapore 119074
| | - Miny Samuel
- NUS Yong Loo Lin School of Medicine; Dean's Office; NUHS Tower Block, Level 11 1E Kent Ridge Road Singapore Singapore 119228
| | - Calvin J Koh
- National Univerisity Health Systems; Division of Gastroenterology and Hepatology; Singapore Level 10 1E Kent Ridge Road Singapore Singapore 119228
| | - Irwani Ibrahim
- National University Hospital; Emergency Medicine Department; 5 Lower Kent Ridge Road Singapore Singapore 110974
| | - Kay Choong See
- Yong Loo Lin School of Medicine; National University Health Systems; Singapore Singapore 117597
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Afsarlar CE, Elizondo R, Yilmaz E, Cakmakci E, Ballow DJ, Demir E, Guney G, Koh CJ. Ultrasonographic findings in the epididymis of pediatric patients with testicular torsion. J Pediatr Urol 2017; 13:393.e1-393.e6. [PMID: 28713006 DOI: 10.1016/j.jpurol.2017.05.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Accepted: 05/20/2017] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Although grayscale ultrasound and color Doppler ultrasound characteristics of the torsed testis are well established in the literature, less is known about its anatomic partner: the epididymis. OBJECTIVE The purpose of this study was to describe the ultrasound characteristics of the epididymis in pediatric patients with testicular torsion, and to describe their potential role as prognostic criteria for testicular salvage outcomes. STUDY DESIGN During a retrospective review of 217 pediatric patients with acute testicular torsion during 2009-2016, morphological features of the epididymis from scrotal ultrasounds (size, parenchymal characteristics, and vascular flow of both epididymis heads), as well as patient demographics, time duration, surgical outcomes, histopathology results, and follow-up periods were analyzed. RESULTS Mean epididymis size and twisting degree were significantly higher in the torsed testes than in the contralateral epididymis (P < 0.001) (Summary table). Cystic structures in the epididymis were identified: a higher number of cysts was associated with testicular non-viability (P = 0.025) and higher twisting degree (P = 0.017). Histopathologic examination showed that these spaces were infiltrated connective tissue most likely formed by venous congestion and vessel rupture. DISCUSSION Scrotal ultrasound can provide information on testicular morphology and viability, as well as morphological changes in the epididymis over time in pediatric patients with testicular torsion. These findings may provide potential prognostic information regarding testicular viability, as a higher number of cystic spaces in the epididymis was associated with a higher rate of testicular non-viability and a higher twisting degree. In addition, the epididymis size (volume) can change during the time course of the ischemic state. CONCLUSIONS This was the first study to describe and analyze epididymis ultrasound findings in pediatric patients with testicular torsion and to correlate them with testicular salvage outcomes. Further prospective studies are needed to determine the role of epididymis ultrasound findings as a potential pre-operative prognostic tool.
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Affiliation(s)
- C E Afsarlar
- Division of Pediatric Urology, Department of Surgery, Texas Children's Hospital, Houston, TX, USA; Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA; Department of Pediatric Surgery, Faculty of Medicine, Hitit University, Çorum, Turkey
| | - R Elizondo
- Division of Pediatric Urology, Department of Surgery, Texas Children's Hospital, Houston, TX, USA; Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
| | - E Yilmaz
- Division of Pediatric Urology, Department of Surgery, Texas Children's Hospital, Houston, TX, USA; Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA; Department of Pediatric Surgery, Dr. Sami Ulus Maternity, Children's Health and Diseases Training and Research Hospital, Ankara, Turkey
| | - E Cakmakci
- Department of Radiology, Dr. Sami Ulus Maternity, Children's Health and Diseases Training and Research Hospital, Ankara, Turkey
| | - D J Ballow
- Division of Pediatric Urology, Department of Surgery, Texas Children's Hospital, Houston, TX, USA; Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
| | - E Demir
- Department of Biostatistics, Faculty of Medicine, Hitit University, Çorum, Turkey
| | - G Guney
- Department of Pathology, Faculty of Medicine, Hitit University, Çorum, Turkey
| | - C J Koh
- Division of Pediatric Urology, Department of Surgery, Texas Children's Hospital, Houston, TX, USA; Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
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Ang JW, Chia C, Koh CJ, Chua BWB, Narayanaswamy S, Wijaya L, Chan LG, Goh WL, Vasoo S. Healthcare-seeking behaviour, barriers and mental health of non-domestic migrant workers in Singapore. BMJ Glob Health 2017; 2:e000213. [PMID: 28589024 PMCID: PMC5435267 DOI: 10.1136/bmjgh-2016-000213] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 02/02/2017] [Accepted: 02/07/2017] [Indexed: 11/05/2022] Open
Abstract
Background Low-wage migrant workers are vulnerable to healthcare inequities. We sought to identify potential barriers to healthcare and risk factors for mental health issues in non-domestic migrant workers in Singapore, and identify high-risk subgroups. Methods A cross-sectional, interviewer-administered survey of 433 non-domestic migrant workers was conducted at subsidised clinics and a foreign worker dormitory from July to August 2016. Questions assessed healthcare usage patterns, affordability issues, barriers to care and psychological distress using a validated screening scale (Kessler-6). Findings Bangladeshi workers surveyed were more likely to be single, have more financial dependents, a lower level of education and salary and pay higher agent fees (p<0.01). 61.4% of workers reported that they had insurance, but had poor understanding of whether it covered inpatient/outpatient expenses. The majority of workers had not, or were not sure if they had, received information about company-bought insurance (72.4%). Among those who had, most reported that information was not in their native language (67.7%). Non-specific psychological distress was found in 21.9%, as estimated by the Kessler-6 scale. Multivariate analysis found that psychological distress was independently associated with Bangladeshi nationals (OR 2.98, 95% CI 1.58 to 5.62; p=0.001) and previous experience of financial barriers to healthcare (OR 3.86, 95% CI 2.25 to 6.62; p<0.0001). Interpretation We identified gaps in non-domestic migrant workers' knowledge of healthcare coverage, and substantial financial barriers to healthcare. The Bangladeshi population in our study was at higher risk of such barriers and psychological distress. These represent areas for further research and intervention.
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Affiliation(s)
- Jia Wei Ang
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
| | | | - Calvin J Koh
- Division of Gastroenterology and Hepatology, National University Hospital, National University Health System, Singapore
| | - Brandon W B Chua
- Department of Pharmacy, KK Women's and Children's Hospital, Singapore
| | | | - Limin Wijaya
- Department of Infectious Diseases, Singapore General Hospital, Singapore
| | - Lai Gwen Chan
- Department of Psychiatry, Tan Tock Seng Hospital, Singapore
| | | | - Shawn Vasoo
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
- Department of Infectious Diseases, Institute of Infectious Diseases and Epidemiology, Tan Tock Seng Hospital, Singapore
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Au JK, Tan X, Sidani M, Stanasel I, Roth DR, Koh CJ, Seth A, Gargollo PC, Tu D, Gonzales ET, Smith TG, Janzen N. Imaging characteristics associated with failure of nonoperative management in high-grade pediatric blunt renal trauma. J Pediatr Urol 2016; 12:294.e1-294.e6. [PMID: 27160977 DOI: 10.1016/j.jpurol.2016.02.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 02/28/2016] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Some children who sustain high-grade blunt renal injury may require operative intervention. In the present study, it was hypothesized that there are computed tomography (CT) characteristics that can identify which of these children are most likely to need operative intervention. MATERIALS AND METHODS A retrospective review was performed of all pediatric blunt renal trauma patients at a single level-I trauma center from 1990 to 2015. Inclusion criteria were: children with American Association for the Surgery of Trauma (AAST) Grade-IV or V renal injuries, aged ≤18 years, and having available CT images with delayed cuts. The CTs were regraded according to the revised AAST grading system proposed by Buckley and McAninch in 2011. Radiographic characteristics of renal injury were correlated with the primary outcome of any operative intervention: ureteral stent, angiography, nephrectomy/renorrhaphy, and percutaneous nephrostomy/drain. RESULTS One patient had a Grade-V injury and 26 patients had Grade-IV injuries. Nine patients (33.3%) underwent operative interventions. Patients in the operative intervention cohort were more likely to manifest a collecting system filling defect (P = 0.040) (Fig. A) and lacked ureteral opacification (P = 0.010). The CT characteristics, including percentage of devascularized parenchyma, medial contrast extravasation, intravascular contrast extravasation, perirenal hematoma distance and laceration location, were not statistically significant. Of the 21 patients who had a collecting system injury, eight (38.1%) needed ureteral stents. Renorrhaphy was necessary for one patient. Although the first operative intervention occurred at a median of hospital day 1 (range 0.5-2.5), additional operative interventions occurred from day 4-16. Thus, it is prudent to closely follow-up these patients for the first month after injury. Two patients with complex renal injuries had an accessory renal artery resulting in well-perfused upper and lower pole fragments, and were managed nonoperatively without readmission (Fig. B). CONCLUSIONS Collecting system defects and lack of ureteral opacification were significantly associated with failure of nonoperative management. A multicenter trial is needed to confirm these findings and whether nonsignificant CT findings are associated with operative intervention. In the month after renal injury, these patients should be mindful of any changes in symptoms, and maintain a low index of suspicion for an emergency room visit. For the physician, close follow-up and appropriate counseling of these high-risk patients is advised.
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Affiliation(s)
- J K Au
- Baylor College of Medicine, Division of Pediatric Urology and Texas Children's Hospital, Clinical Care Center, 6701 Fannin Street, 6th Floor, Houston, TX 77030, USA.
| | - X Tan
- Department of Urology, Baylor College of Medicine, 7200 Cambridge Street, 10th Floor, Suite A10.136, Houston, TX 77030, USA
| | - M Sidani
- Department of Urology, Baylor College of Medicine, 7200 Cambridge Street, 10th Floor, Suite A10.136, Houston, TX 77030, USA
| | - I Stanasel
- Baylor College of Medicine, Division of Pediatric Urology and Texas Children's Hospital, Clinical Care Center, 6701 Fannin Street, 6th Floor, Houston, TX 77030, USA
| | - D R Roth
- Baylor College of Medicine, Division of Pediatric Urology and Texas Children's Hospital, Clinical Care Center, 6701 Fannin Street, 6th Floor, Houston, TX 77030, USA
| | - C J Koh
- Baylor College of Medicine, Division of Pediatric Urology and Texas Children's Hospital, Clinical Care Center, 6701 Fannin Street, 6th Floor, Houston, TX 77030, USA
| | - A Seth
- Baylor College of Medicine, Division of Pediatric Urology and Texas Children's Hospital, Clinical Care Center, 6701 Fannin Street, 6th Floor, Houston, TX 77030, USA
| | - P C Gargollo
- Department of Urology, 200 1st St SW, Rochester, MN 55902, USA
| | - D Tu
- Baylor College of Medicine, Division of Pediatric Urology and Texas Children's Hospital, Clinical Care Center, 6701 Fannin Street, 6th Floor, Houston, TX 77030, USA
| | - E T Gonzales
- Baylor College of Medicine, Division of Pediatric Urology and Texas Children's Hospital, Clinical Care Center, 6701 Fannin Street, 6th Floor, Houston, TX 77030, USA
| | - T G Smith
- Department of Urology, Baylor College of Medicine, 7200 Cambridge Street, 10th Floor, Suite A10.136, Houston, TX 77030, USA
| | - N Janzen
- Baylor College of Medicine, Division of Pediatric Urology and Texas Children's Hospital, Clinical Care Center, 6701 Fannin Street, 6th Floor, Houston, TX 77030, USA
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22
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Ruano R, Sananes N, Wilson C, Au J, Koh CJ, Gargollo P, Shamshirsaz AA, Espinoza J, Safdar A, Moaddab A, Meyer N, Cass DL, Olutoye OO, Olutoye OA, Welty S, Roth DR, Braun MC, Belfort MA. Fetal lower urinary tract obstruction: proposal for standardized multidisciplinary prenatal management based on disease severity. Ultrasound Obstet Gynecol 2016; 48:476-482. [PMID: 26690832 DOI: 10.1002/uog.15844] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Revised: 10/31/2015] [Accepted: 12/15/2015] [Indexed: 06/05/2023]
Abstract
OBJECTIVE To present a single center experience of a standardized prenatal multidisciplinary management protocol for fetal lower urinary tract obstruction (LUTO) and to propose a classification of fetal LUTO based on disease severity. METHODS This was a retrospective cohort study of 25 consecutive fetal patients with prenatal diagnosis of primary LUTO. Fetal intervention was offered after evaluation by a multidisciplinary team. Analyses were conducted using Bayesian methodology to determine predictors of survival at 6 months postpartum. Odds ratios (ORs) with 95% credibility intervals are reported. RESULTS Fifteen (60.0%) of the 25 patients referred for assessment survived to postnatal evaluation. Fetal vesicoamniotic shunt was placed in 14 (56.0%) patients with 12 survivors. Multivariable analysis suggested that fetal intervention (OR, 6.97 (0.88-70.16), Pr(OR > 1) = 96.7%), anhydramnios (OR, 0.12 (0.04-0.35), Pr(OR < 1) = 99.9%), favorable fetal urine analysis (OR, 3.98 (0.63-25.15), Pr(OR > 1) = 92.7%) and absence of renal cortical cysts (OR, 3.9 (0.66-24.2), Pr(OR > 1) = 93.3%) were predictors of survival. CONCLUSIONS Fetal intervention and fetal renal function were independently associated with postnatal survival of fetuses with LUTO. A classification based on the severity of disease is proposed. Copyright © 2015 ISUOG. Published by John Wiley & Sons Ltd.
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Affiliation(s)
- R Ruano
- Department of Obstetrics and Gynecology, Baylor College of Medicine and Texas Children's Fetal Center - Texas Children's Hospital Pavilion for Women, Houston, TX, USA. ,
| | - N Sananes
- Department of Obstetrics and Gynecology, Baylor College of Medicine and Texas Children's Fetal Center - Texas Children's Hospital Pavilion for Women, Houston, TX, USA
| | - C Wilson
- Division of Pediatric Urology, Baylor College of Medicine and Texas Children's Fetal Center - Texas Children's Hospital Pavilion for Women, Houston, TX, USA
| | - J Au
- Division of Pediatric Urology, Baylor College of Medicine and Texas Children's Fetal Center - Texas Children's Hospital Pavilion for Women, Houston, TX, USA
| | - C J Koh
- Division of Pediatric Urology, Baylor College of Medicine and Texas Children's Fetal Center - Texas Children's Hospital Pavilion for Women, Houston, TX, USA
| | - P Gargollo
- Division of Pediatric Urology, Baylor College of Medicine and Texas Children's Fetal Center - Texas Children's Hospital Pavilion for Women, Houston, TX, USA
| | - A A Shamshirsaz
- Department of Obstetrics and Gynecology, Baylor College of Medicine and Texas Children's Fetal Center - Texas Children's Hospital Pavilion for Women, Houston, TX, USA
| | - J Espinoza
- Department of Obstetrics and Gynecology, Baylor College of Medicine and Texas Children's Fetal Center - Texas Children's Hospital Pavilion for Women, Houston, TX, USA
| | - A Safdar
- Division of Pediatric Nephrology, Baylor College of Medicine and Texas Children's Fetal Center - Texas Children's Hospital Pavilion for Women, Houston, TX, USA
| | - A Moaddab
- Department of Obstetrics and Gynecology, Baylor College of Medicine and Texas Children's Fetal Center - Texas Children's Hospital Pavilion for Women, Houston, TX, USA
| | - N Meyer
- Department of Public Health, Strasbourg University Hospital, Strasbourg, France
| | - D L Cass
- Department of Pediatric Surgery, Baylor College of Medicine and Texas Children's Fetal Center - Texas Children's Hospital Pavilion for Women, Houston, TX, USA
| | - O O Olutoye
- Department of Pediatric Surgery, Baylor College of Medicine and Texas Children's Fetal Center - Texas Children's Hospital Pavilion for Women, Houston, TX, USA
| | - O A Olutoye
- Department of Anesthesiology, Baylor College of Medicine and Texas Children's Fetal Center - Texas Children's Hospital Pavilion for Women, Houston, TX, USA
| | - S Welty
- Department of Pediatrics, Baylor College of Medicine and Texas Children's Fetal Center - Texas Children's Hospital Pavilion for Women, Houston, TX, USA
| | - D R Roth
- Division of Pediatric Urology, Baylor College of Medicine and Texas Children's Fetal Center - Texas Children's Hospital Pavilion for Women, Houston, TX, USA
| | - M C Braun
- Division of Pediatric Nephrology, Baylor College of Medicine and Texas Children's Fetal Center - Texas Children's Hospital Pavilion for Women, Houston, TX, USA
| | - M A Belfort
- Department of Obstetrics and Gynecology, Baylor College of Medicine and Texas Children's Fetal Center - Texas Children's Hospital Pavilion for Women, Houston, TX, USA
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Zhao YJ, Khoo AL, Lin L, Teng M, Koh CJ, Lim SG, Lim BP, Dan YY. Cost-effectiveness of strategy-based approach to treatment of genotype 1 chronic hepatitis C. J Gastroenterol Hepatol 2016; 31:1628-37. [PMID: 26990023 DOI: 10.1111/jgh.13341] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 02/10/2016] [Accepted: 02/29/2016] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND AIM The high cost of chronic hepatitis C (HCV) direct-acting antivirals (DAAs) poses significant financial challenges for health payers, especially in Asia. A personalized treatment strategy based on individualized probability of virological response using oral DAAs as second-line therapy would seem practical but has not been studied. METHODS We performed a Markov model to project health outcomes and costs for patients with genotype 1 HCV through 10 treatment strategies over a lifetime period. The implication of retreatment was also incorporated to reflect real-life situation. RESULTS Using boceprevir and peginterferon/ribavirin (BOC/PR, the least costly treatment) as a base case, the all-oral therapies such as ombitasvir/paritaprevir/ritonavir-dasabuvir are cost-effective with an incremental cost-effective ratio of $US50 828. However, the all-oral DAAs would no longer be cost-effective compared with conventional therapies if retreatment were taken into account. A road map strategy using rapid virological response to guide use of BOC/PR and sofosbuvir/PR had the most favorable incremental cost-effective ratio ($US27 782) relative to BOC/PR. Nevertheless, the trade-off with the cost-effectiveness of the road map strategy is an increased number of liver-related deaths compared with all-oral DAAs (52 vs 10-20 per 10 000 patients) by incorporating retreatment. CONCLUSIONS The 12-week all-oral DAAs were cost-effective options using conventional drug-to-drug comparison. However, they cease to be cost-effective when treatment strategies incorporating DAA retreatment for interferon failures are incorporated. HCV management can be optimized by adopting individualized treatment algorithm providing a practical solution to health payers to make oral DAAs accessible to those who need them most.
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Affiliation(s)
- Ying Jiao Zhao
- Pharmacy and Therapeutics Office, Group Corporate Development, National Healthcare Group, Singapore
| | - Ai Leng Khoo
- Pharmacy and Therapeutics Office, Group Corporate Development, National Healthcare Group, Singapore
| | - Liang Lin
- Pharmacy and Therapeutics Office, Group Corporate Development, National Healthcare Group, Singapore
| | - Monica Teng
- Pharmacy and Therapeutics Office, Group Corporate Development, National Healthcare Group, Singapore
| | - Calvin J Koh
- Division of Gastroenterology and Hepatology, National University Hospital, National University Health System, Singapore
| | - Seng Gee Lim
- Division of Gastroenterology and Hepatology, National University Hospital, National University Health System, Singapore
| | - Boon Peng Lim
- Pharmacy and Therapeutics Office, Group Corporate Development, National Healthcare Group, Singapore
| | - Yock Young Dan
- Division of Gastroenterology and Hepatology, National University Hospital, National University Health System, Singapore. .,Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
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Silay MS, Spinoit AF, Undre S, Fiala V, Tandogdu Z, Garmanova T, Guttilla A, Sancaktutar AA, Haid B, Waldert M, Goyal A, Serefoglu EC, Baldassarre E, Manzoni G, Radford A, Subramaniam R, Cherian A, Hoebeke P, Jacobs M, Rocco B, Yuriy R, Zattoni F, Kocvara R, Koh CJ. Global minimally invasive pyeloplasty study in children: Results from the Pediatric Urology Expert Group of the European Association of Urology Young Academic Urologists working party. J Pediatr Urol 2016; 12:229.e1-7. [PMID: 27346071 DOI: 10.1016/j.jpurol.2016.04.007] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 04/24/2016] [Indexed: 11/15/2022]
Abstract
INTRODUCTION Minimally invasive pyeloplasty (MIP) for ureteropelvic junction (UPJ) obstruction in children has gained popularity over the past decade as an alternative to open surgery. The present study aimed to identify the factors affecting complication rates of MIP in children, and to compare the outcomes of laparoscopic (LP) and robotic-assisted laparoscopic pyeloplasty (RALP). MATERIALS AND METHODS The perioperative data of 783 pediatric patients (<18 years old) from 15 academic centers who underwent either LP or RALP with an Anderson Hynes dismembered pyeloplasty technique were retrospectively evaluated. Redo cases and patients with anatomic renal abnormalities were excluded. Demographics and operative data, including procedural factors, were collected. Complications were classified according to the Satava and modified Clavien systems. Failure was defined as any of the following: obstructive parameters on diuretic renal scintigraphy, decline in renal function, progressive hydronephrosis, or symptom relapse. Univariate and multivariate analysis were applied to identify factors affecting the complication rates. All parameters were compared between LP and RALP. RESULTS A total of 575 children met the inclusion criteria. Laparoscopy, increased operative time, prolonged hospital stay, ureteral stenting technique, and time required for stenting were factors influencing complication rates on univariate analysis. None of those factors remained significant on multivariate analysis. Mean follow-up was 12.8 ± 9.8 months for RALP and 45.2 ± 33.8 months for LP (P = 0.001). Hospital stay and time for stenting were shorter for robotic pyeloplasty (P < 0.05 for both). Success rates were similar between RALP and LP (99.5% vs 97.3%, P = 0.11). The intraoperative complication rate was comparable between RALP and LP (3.8% vs 7.4%, P = 0.06). However, the postoperative complication rate was significantly higher in the LP group (3.2% for RALP and 7.7% for LP, P = 0.02). All complications were of no greater severity than Satava Grade IIa and Clavien Grade IIIb. DISCUSSION This was the largest multicenter series of LP and RALP in the pediatric population. Limitations of the study included the retrospective design and lack of surgical experience as a confounder. CONCLUSIONS Both minimally invasive approaches that were studied were safe and highly effective in treating UPJ obstruction in children in many centers globally. However, shorter hospitalization time and lower postoperative complication rates with RALP were noted. The aims of the study were met.
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Affiliation(s)
- M S Silay
- Department of Urology, Istanbul Medeniyet University, Istanbul, Turkey; Department of Urology, Texas Children's Hospital and Baylor College of Medicine, Houston, TX, USA.
| | - A F Spinoit
- Department of Urology, Ghent University Hospital, Ghent, Belgium
| | - S Undre
- Department of Pediatric Urology, Great Ormond Street Hospital, London, UK
| | - V Fiala
- Department of Urology, General Teaching Hospital in Prague and Charles University, 1st Faculty of Medicine, Prague, Czech Republic
| | - Z Tandogdu
- Northern Institute for Cancer Research, Newcastle University, Newcastle, UK
| | - T Garmanova
- Department of Urology, Institute of Moscow, Moscow, Russia
| | - A Guttilla
- Department of Urology, University of Padua, Padua, Italy
| | | | - B Haid
- Department of Pediatric Urology, Sisters of the Charity Hospital, Linz, Austria
| | - M Waldert
- Department of Urology, University of Vienna, Vienna, Austria
| | - A Goyal
- Department of Pediatric Urology, University of Manchester, Manchester, UK
| | - E C Serefoglu
- Department of Urology, Bagcilar Training and Research Hospital, Istanbul, Turkey
| | - E Baldassarre
- Department of Urology, Umberto Parini Hospital, Aosta, Italy
| | - G Manzoni
- Department of Urology, Policlinico, Milan, Italy
| | - A Radford
- Department of Pediatric Urology, Leeds Children's Hospital, Leeds, UK
| | - R Subramaniam
- Department of Pediatric Urology, Leeds Children's Hospital, Leeds, UK
| | - A Cherian
- Department of Pediatric Urology, Great Ormond Street Hospital, London, UK
| | - P Hoebeke
- Department of Urology, General Teaching Hospital in Prague and Charles University, 1st Faculty of Medicine, Prague, Czech Republic
| | - M Jacobs
- Department of Pediatric Urology, Children's Medical Center, Dallas, USA
| | - B Rocco
- Department of Urology, Policlinico, Milan, Italy
| | - R Yuriy
- Department of Urology, Institute of Moscow, Moscow, Russia
| | - Fabio Zattoni
- Department of Urology, University of Padua, Padua, Italy
| | - R Kocvara
- Department of Urology, General Teaching Hospital in Prague and Charles University, 1st Faculty of Medicine, Prague, Czech Republic
| | - C J Koh
- Department of Urology, Texas Children's Hospital and Baylor College of Medicine, Houston, TX, USA
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Sananes N, Favre R, Koh CJ, Zaloszyc A, Braun MC, Roth DR, Moog R, Becmeur F, Belfort MA, Ruano R. Urological fistulas after fetal cystoscopic laser ablation of posterior urethral valves: surgical technical aspects. Ultrasound Obstet Gynecol 2015; 45:183-189. [PMID: 24817027 DOI: 10.1002/uog.13405] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2014] [Revised: 04/23/2014] [Accepted: 04/25/2014] [Indexed: 06/03/2023]
Abstract
OBJECTIVE To describe the surgical technical aspects associated with the development of urological fistulas after fetal antegrade cystoscopic laser fulguration of the posterior urethral valves (PUV). METHODS The perioperative data for all fetal cystoscopies performed between January 2004 and August 2013 at three institutions in the USA, France and Brazil were reviewed, with particular emphasis on surgical technical aspects of the procedure and the complications encountered. RESULTS A total of 40 fetal cystoscopies were performed at the three institutions. Laser fulguration of the PUV was performed in 23 of these cases, with a survival rate of 60.9% (14/23) and normal renal function in 85.7% (12/14) of these infants. Urological fistulas were diagnosed postnatally in four (10%) newborns. The presence of fistulas was associated with a higher gestational age at diagnosis of PUV (P < 0.01) and with the use of semi-curved rather than curved sheaths (P < 0.01), the use of a diode laser (P < 0.01) and the use of higher laser power and energy (P < 0.01 and P < 0.01, respectively), as well as with less operator experience (P < 0.01) and with absence of fetal anesthesia/immobilization (P = 0.02). CONCLUSION Urological fistulas are a severe complication of fetal cystoscopic laser fulguration of PUV and are associated with type, energy and power settings of the laser and instrumentation. The use of appropriate technique and proper training of the operator are necessary to perform this fetal intervention safely.
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Affiliation(s)
- N Sananes
- Department of Obstetrics and Gynecology, Hôpitaux Universitaires de Strasbourg, Strasbourg, France; INSERM, UMR-S 1121, Biomatériaux et Bioingénierie, Strasbourg, France
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Koh CJ, Atala A. Tissue engineering for urinary incontinence applications. Minerva Ginecol 2004; 56:371-8. [PMID: 15377985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
Urinary incontinence affects men and women of all ages, and may be present in nearly half of all elderly women. Current nonpharmacologic, pharmacologic, and surgical therapies often only offer short-term relief. This review focuses on the application of tissue engineering and regenerative medicine to the field of urinary incontinence. The principles of tissue engineering will be discussed as well as some current strategies for applying these principles in developing novel therapies for urinary incontinence.
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Affiliation(s)
- C J Koh
- Institute for Regenerative Medicine, Wake Forest University School of Medicine, Winston Salem, NC 27157, USA.
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Koh CJ, Bochner BH, Stein JP, Fedenko AN, Dequattro V, Skinner DG. Norepinephrine producing renal cell carcinoma. J Urol 2001; 166:603. [PMID: 11458078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Affiliation(s)
- C J Koh
- Departments of Urology and Pathology, University of Southern California-Norris Comprehensive Cancer Center and Hypertension Section, Los Angeles, California, USA
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Koh CJ, De Filippo RE, Bochner BH, Stein JP, Skinner DG. Extensive bladder and urethral calculi detected with computerized tomography: diagnosis and management. J Urol 1999; 162:158. [PMID: 10379763 DOI: 10.1097/00005392-199907000-00040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- C J Koh
- Department of Urology, University of Southern California School of Medicine, Los Angeles, USA
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Koh CJ, Lee JB, Lee S, Kim WJ. Influence of vitamin E on the effect of vitamin A derivatives on digestive glands of rats. J Dermatol 1981; 8:455-8. [PMID: 7037896 DOI: 10.1111/j.1346-8138.1981.tb02560.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Schröder JM, Szperalski B, Koh CJ, Christophers E. IgA-associated inhibition of polymorphonuclear leukocyte chemotaxis in neutrophilic dermatoses. J Invest Dermatol 1981; 77:464-8. [PMID: 7310170 DOI: 10.1111/1523-1747.ep12497599] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The chemotactic activity of normal human polymorphonuclear leukocytes (PMNs) confronted with heat inactivated sera from patients with psoriasis as well as various chronic proliferative diseases was determined using modified Boyden chambers. By the addition of phorbol myristate acetate (PMA) at a concentration of 1 ng/ml the chemoattractant activities of the sera were greatly potentiated. However, the chemotactic migration of normal PMNs was strongly inhibited by sera from patients with long standing and wide spread psoriasis, pyoderma gangrenosum, severe acne conglobata, Sweet syndrome, and some patients with chronic arthritis following rheumatoid fever. In acute guttate psoriasis and atopic dermatitis increased migratory activities were seen. The inhibition of chemotaxis correlated with increased serum IgA levels as determined by radial immuno diffusion. Column chromatography (Sephacryl S-300) revealed serum fractions of strong inhibitory potency at a molecular weight near 200,000 Dalton. These inhibitory fractions were seen in patients with long standing neutrophil related diseases and could not be detected in normal control sera. It appears that inhibition of PMN chemotaxis is a secondary phenomenon and may play an autoregulatory role in PMN related inflammation.
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