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Lim T, Campbell R, Jones D, Mullan A, Lichen I, Knier C, Bellamkonda V. 72 Association of Limited English Proficiency and Increased Emergency Department Waiting Room Lengths of Stay. Ann Emerg Med 2022. [DOI: 10.1016/j.annemergmed.2022.08.095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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2
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Lim TH, Badaruddin NSF, Foo SY, Bujang MA, Muniandy P. Prevalence and psychosocial impact of acne vulgaris among high school and university students in Sarawak, Malaysia. Med J Malaysia 2022; 77:446-453. [PMID: 35902934] [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: 06/15/2023]
Abstract
BACKGROUND Acne vulgaris is a common skin condition that affects adolescents and young adults. Its psychosocial impact can be significant. The primary objective of this study was to determine the prevalence of acne vulgaris and its psychosocial impact among high school and university students in Kuching, Sarawak. In addition, the clinical characteristics of acne and its potential predisposing factors were assessed. METHODS This cross-sectional study was conducted among high school and university students in Kuching, Sarawak. A team of dermatology-trained doctors examined a representative sample of high school and university students aged 16 to 25 years to identify acne vulgaris. The Dermatology Life Quality Index (DLQI) was used to assess the psychosocial impact of acne on affected individuals. The Global Acne Grading System (GAGS) was used to determine the severity of acne. Demographic data and clinical characteristics of acne were recorded. RESULTS A total of 582 students aged 16 to 25 years were recruited. The overall prevalence of acne vulgaris was 75.8% (n=441). The prevalence of acne was highest (85.5%) in the age group of 16-18 years. There was a significantly higher tendency for male students to have moderate to severe acne (p=0.010). A significantly higher proportion of female students had impaired quality of life (p<0.001) compared to male students. In comparison to male students, the mean DLQI scores were significantly higher in female students in the domains of 'Work and school' and 'Personal relationship' (p<0.05). There were 41 students who had a very large impact on the quality of life with a DLQI score of 11-20 and 34 (82.9%) of them had mild acne. There was a significantly higher proportion of students who had frequent insomnia in the group of students with acne compared to those without acne (11.6% vs. 4.3%, p=0.011). There was no significant association of acne vulgaris with dietary intakes, such as chocolates, sweets, potato chips, yoghurt, milk, fried chicken, ice cream, nuts and carbonated drinks (p>0.05). Of the 441 students with acne, 247 (56%) had not sought any medical attention. CONCLUSION Acne vulgaris impacts the quality of life similarly to psoriasis, atopic eczema, and chronic urticaria. In mild acne cases, the quality of life may be significantly affected. Therefore, acne education is required in high schools and colleges to ensure that students understand their disease and are aware of available treatments.
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Affiliation(s)
- T H Lim
- Sarawak General Hospital, Department of Dermatology, Kuching, Sarawak, Malaysia.
| | - N S F Badaruddin
- Sarawak General Hospital, Department of Dermatology, Kuching, Sarawak, Malaysia
| | - S Y Foo
- Sarawak General Hospital, Department of Dermatology, Kuching, Sarawak, Malaysia
| | - M A Bujang
- Sarawak General Hospital, Clinical Research Centre, Kuching, Sarawak, Malaysia
| | - P Muniandy
- Sarawak General Hospital, Department of Dermatology, Kuching, Sarawak, Malaysia
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Park J, Jee J, Choi W, Lee K, Lim T, Jeon H, Seo J, Yoo J. Tissue Engineering, Embryonic, Organ and Other Tissue Specific Stem Cells: ASSESSMENT OF THE MUCOSAL HEALING EFFECT OF COLON ORGANOID TRANSPLANTATION IN RADIATION COLITIS. Cytotherapy 2022. [DOI: 10.1016/s1465-3249(22)00402-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Park J, Lim T, Jeon H, Song H, Choi W, Lee K. Tissue Engineering, Embryonic, Organ and Other Tissue Specific Stem Cells: ORGANOID AS A REGENERATIVE MEDICINE TO HEAL ULCERS IN A PORCINE MODEL OF RADIATION PROCTITIS AND CONSIDERATION FOR FIRST IN HUMAN TRIALS. Cytotherapy 2022. [DOI: 10.1016/s1465-3249(22)00405-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Song Y, Lim J, Lim T, Im K, Kim N, Nam Y, Jeon Y, Ko H, Park I, Shin J, Cho S. Human mesenchymal stem cells derived from umbilical cord and bone marrow exert immunomodulatory effects in different mechanisms. Cytotherapy 2021. [DOI: 10.1016/s1465324921003455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ibrahim K, Lim T, Mullee MA, Yao GL, Zhu S, Baxter M, Tilley S, Russel C, Roberts HC. 20 Comparison of Six Frailty Screening Tools in Patients Aged 65+ with An Arm Fragility Fracture. Age Ageing 2021. [DOI: 10.1093/ageing/afab028.20] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Frailty is associated with an increased risk of falling and fracture, but not routinely assessed in fracture clinic. Early identification and management of frailty among older people with arm fragility fracture could help avoid further falls and fractures, especially of the hip. We evaluated the feasibility of assessing frailty in a busy fracture clinic.
Methods
People aged 65+ years with an arm fracture in one acute trust were recruited. Frailty was assessed in fracture clinics using six tools: Fried Frailty Phenotype (FFP), FRAIL scale, PRISMA-7, electronic Frailty Index (e-FI), Clinical Frailty Score (CFS), and Study of Osteoporotic Fracture (SOF). The sensitivity and specificity of each tool was compared against FFP as a reference. Participants identified as frail by 2+ tools were referred for Comprehensive Geriatric Assessment (CGA).
Results
100 patients (mean age 75 years±7.2; 20 men) were recruited. Frailty prevalence was 9% (FRAIL scale), 13% (SOF), 14% (CFS > 6), 15% (FFP; e-FI > 0.25), and 25% (PRISMA-7). Men were more likely to be frail than women. Data were complete for all assessments and completion time ranged from one minute (PRISMA-7; CFS) to six minutes for the FFP which required most equipment. Comparing with FFP, the most accurate instrument for stratifying frail from non-frail was the PRISMA-7 (sensitivity = 93%, specificity = 87%) while the remaining tools had good specificity (range 93%–100%) but average sensitivity (range 40%–60%). Twenty patients were eligible for CGA. Five had recently had CGA and 11/15 referred were assessed. CGA led to 3–6 interventions per participant including medication changes, life-style advice, investigations, and onward referrals.
Conclusion
It was feasible to assess frailty in fracture clinic and to identify patients who benefitted from CGA. Frailty prevalence was 9%—25% depending on the tool used and was higher among men. PRISMA-7 could be a practical tool for routine use in fracture clinics.
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Affiliation(s)
- K Ibrahim
- Faculty of Medicine, University of Southampton
- National Institute for Health Research Applied Research Collaboration (NIHR ARC) Wessex
| | - T Lim
- Faculty of Medicine, University of Southampton
| | - M A Mullee
- Faculty of Medicine, University of Southampton
| | - G L Yao
- College of Life Sciences, University of Leicester University
| | - S Zhu
- Faculty of Medicine, University of Southampton
| | - M Baxter
- Medicine for Older People Department, University Hospital Southampton NHS Foundation Trust
| | - S Tilley
- Trauma and Orthopaedic department, University Hospital Southampton NHS Foundation Trust
| | - C Russel
- National Institute for Health Research Applied Research Collaboration (NIHR ARC) Wessex
| | - H C Roberts
- Faculty of Medicine, University of Southampton
- National Institute for Health Research Applied Research Collaboration (NIHR ARC) Wessex
- Medicine for Older People Department, University Hospital Southampton NHS Foundation Trust
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Low QJ, Teo KZ, Lim TH, Cheo SW, Yap WYE. Knowledge, attitude, practice and perception on sunscreen and skin cancer among doctors and pharmacists. Med J Malaysia 2021; 76:212-217. [PMID: 33742630] [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: 06/12/2023]
Abstract
INTRODUCTION Excessive ultraviolet light (UV) can cause premature skin aging and potentially skin cancer. Currently there is a lack of awareness among health care professionals and the public on sun protection. The objectives of this study were to determine knowledge on sunscreen and skin cancer among health care professionals, to evaluate the knowledge, attitude, practice and perception of doctors and pharmacists toward the usage of sunscreen as protection against UV radiation. MATERIALS AND METHODS This is a cross-sectional study conducted among doctors and pharmacists in Hospital Sultanah Nora Ismail, Batu Pahat, Johor, Malaysia. Questionnaires were used in this study. RESULTS A total of 384 participants completed the questionnaires. The participants consisted of 323 doctors (84.1%) and 61 pharmacists (15.9%). The age group of the participants ranged between 25 till 55 years old. Ninety doctors (27.9%) and thirty-one pharmacists (51.0%) reported used sunscreen daily (p<0.001). This finding showed that there was a deficit in the practice of sun protection. Pharmacists scored a higher knowledge score of median 12 (IQR=3.0) while the doctors scored 11 (IQR=2.0). This study showed a significant association between ethnicity and skin cancer knowledge (p<0.05). CONCLUSION This study demonstrated a lack of knowledge of sunscreen and skin cancer prevention among health care practitioners. This finding supports better medical education program on this topic.
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Affiliation(s)
- Q J Low
- Hospital Sultanah Nora Ismail, Department of Internal Medicine, Batu Pahat, Johor, Malaysia.
| | - K Z Teo
- Hospital Sultanah Nora Ismail, Department of Internal Medicine, Batu Pahat, Johor, Malaysia
| | - T H Lim
- Hospital Sultanah Nora Ismail, Department of Internal Medicine, Batu Pahat, Johor, Malaysia
| | - S W Cheo
- Hospital Lahad Datu, Department of Internal Medicine, Lahad Datu, Sabah, Malaysia
| | - W Y E Yap
- Hospital Pakar Sultanah Fatimah Muar, Department of Dermatology, Muar, Johor, Malaysia
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Tan BF, Lim T, Boontiam W. Effect of dietary supplementation with essential oils and a Bacillus probiotic on growth performance, diarrhoea and blood metabolites in weaned pigs. Anim Prod Sci 2021. [DOI: 10.1071/an18752] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Context
Dietary supplementation of essential oils or in combination with a Bacillus probiotic was investigated as an antibiotic growth promoter for weaned pigs.
Aims
To evaluate the effect of essential oils (i.e. thymol and carvacrol mixture) or in combination with a probiotic strain (i.e. Bacillus subtilis PB6) on the growth performance, diarrhoea incidence, ammonia emission and serological profiles of weaned pigs.
Methods
A total of 96 crossbred ([Yorkshire × Landrace] × Duroc) weaned pigs were randomly allotted to one of six treatments based on sex and initial bodyweight. Each group was distributed into four replicates with four pigs each according to a randomised complete block design. The treatments were: (i) positive control, basal diet supplemented with colistin 150 g/tonne and amoxicillin 200 g/tonne; (ii) negative control, basal diet without supplementation; (iii) T3, basal diet supplemented with essential oils 300 g/tonne; (iv) T4, basal diet supplemented with essential oils 600 g/tonne; (v) T5, basal diet supplemented with essential oils 1000 g/tonne; and (vi) T6, basal diet supplemented with essential oils 300 g/tonne diet and Bacillus probiotics 1000 g/tonne.
Key results
The piglets fed with supplements had a significantly higher average daily gain and lower incidence of diarrhoea than the piglets in the negative control (P = 0.001). Feeding the essential oils alone or in combination with probiotics significantly reduced faecal ammonia emission (P = 0.027) and blood urea nitrogen (P = 0.039), while markedly increasing the serum immunoglobulin G concentration of weaned pigs compared with the negative control treatment (P = 0.014). The difference in time of blood collection had significant effects on blood urea nitrogen and immunoglobulins (P = 0.001). However, no significant differences emerged in average daily feed intake, gain: feed ratio, feed efficiency and antibody against swine fever among the treatments.
Conclusions
Diet supplementation with essential oils or in combination with probiotics improved growth performance and immunity, and lowered ammonia emissions and diarrhoea incidence of weaned pigs.
Implications
These findings provide a basis for the application of phytogenic compounds and probiotics as antibiotic growth promoter alternatives in post-weaning diets for pigs.
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Low QJ, Lau WK, Lim TH, Lee RA, Cheo SW. A Case of Severe Falciparum Malaria in a Returned Traveler. Malays Fam Physician 2020; 15:86-89. [PMID: 33329868 PMCID: PMC7735881] [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] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Primary care providers should be alert to travel-related infections. Around 10-40% of returning travelers from all destinations and 15-70% of travelers from tropical settings experience ill health, either overseas or upon returning home.1 A systematic approach concentrating on possible infections should be undertaken based on the patient's travel location, immunization history, presence of malaria chemoprophylaxis at the destination, other potential exposures, incubation period, and clinical presentation.2-3 The World Health Organization (WHO) website is constantly being updated on specific travel-related infections and recent geographical outbreaks. In this paper, we report a case of severe falciparum malaria in a returned traveler.
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Affiliation(s)
- Q J Low
- MD (UMS), MRCP (UK), Department of Internal Medicine, Hospital Sultanah Nora Ismail, Jalan Korma, Taman Soga, 83000, Batu Pahat, Johor, Malaysia, Email : lowqinjian@moh,gov.my
| | - W K Lau
- MBBS (UTAR), Department of Internal Medicine, Hospital Sultanah Nora Ismail, Jalan Korma, Taman Soga, 83000, Batu Pahat, Johor, Malaysia
| | - T H Lim
- MD (I.M. Sechenov Moscow Medical Academy), MRCP (UK), Department of Internal Medicine, Hospital Sultanah Nora Ismail, Jalan Korma, Taman Soga, 83000, Batu Pahat, Johor, Malaysia
| | - R A Lee
- MBBS (UM), M.Med (Rad), FRCR (UK) Department of Radiology, Hospital Sultanah Nora Ismail, Jalan Korma, Taman Soga, 83000, Batu Pahat, Johor, Malaysia
| | - S W Cheo
- MD (UMS), MRCP (UK), Department of Internal Medicine, Hospital Lahad Datu, Peti Bersurat 60065, 91110, Lahad Datu, Sabah Malaysia
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10
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Affiliation(s)
- Q J Low
- Department of Internal Medicine, Hospital Sultanah Nora Ismail, Jalan Korma, Taman Soga, Batu Pahat, Johor 83000, Malaysia
| | - S A Hon
- Department of Internal Medicine, Hospital Sultanah Nora Ismail, Jalan Korma, Taman Soga, Batu Pahat, Johor 83000, Malaysia
| | - P W Garry Siow
- Department of Internal Medicine, Hospital Sultanah Nora Ismail, Jalan Korma, Taman Soga, Batu Pahat, Johor 83000, Malaysia
| | - T H Lim
- Department of Internal Medicine, Hospital Sultanah Nora Ismail, Jalan Korma, Taman Soga, Batu Pahat, Johor 83000, Malaysia
| | - R A Lee
- Department of Radiology, Hospital Sultanah Nora Ismail, Jalan Korma, Taman Soga, Batu Pahat, Johor 83000, Malaysia
| | - Y A Tan
- Department of Internal Medicine, Hospital Queen Elizabeth, Kota Kinabalu, Sabah 88300, Malaysia
| | - S W Cheo
- Department of Internal Medicine, Hospital Lahad Datu, Peti Bersurat 60065, Lahad Datu, Sabah 91110, Malaysia
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11
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Low QJ, Lee KT, Lim TH, Siaw C, Cheo SW, Tan NE, Reza MQ. Dilemma in the management of methanol poisoning at a district hospital in Malaysia. Med J Malaysia 2020; 75:442-444. [PMID: 32724013] [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: 06/11/2023]
Abstract
There are increasing reports of methanol poisoning (MP) incidence worldwide. In Malaysia, the largest first methanol poisoning was reported in Selangor in 2013 with a total of 41 patients and cluster of cases been reported from the country since then. Often MP involved adulterated alcohol containing more than the legal permissible concentration of methanol. Methanol is rapidly absorbed and metabolised into formic acid which causes variable symptoms of the central nervous system such as blindness, seizure, coma and gastrointestinal disturbances. Mortality could reach up to 83% as reported using the coma state, pH and pCO2 level in the worst-case scenario.
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Affiliation(s)
- Q J Low
- Hospital Sultanah Nora Ismail, Department of Internal Medicine, Johor, Malaysia.
| | - K T Lee
- Hospital Sultanah Nora Ismail, Department of Internal Medicine, Johor, Malaysia
| | - T H Lim
- Hospital Sultanah Nora Ismail, Department of Internal Medicine, Johor, Malaysia
| | - C Siaw
- Hospital Sultanah Nora Ismail, Department of Internal Medicine, Johor, Malaysia
| | - S W Cheo
- Hospital Lahad Datu, Department of Internal Medicine, Sabah, Malaysia
| | - N E Tan
- Hospital Melaka, Department of Emergency Medicine, 75400 Melaka, Malaysia
| | - M Q Reza
- Hospital Melaka, Department of Emergency Medicine, 75400 Melaka, Malaysia
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Zhao Z, Takano A, Lim AST, Lim TH, Selvarajan S. Metastatic alveolar rhabdomyosarcoma on the fine-needle aspiration cytology of cervical lymph node in an elderly patient, with FISH confirmation: A case report. Malays J Pathol 2020; 42:115-119. [PMID: 32342940] [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: 06/11/2023]
Abstract
INTRODUCTION Alveolar rhabdomyosarcoma (RMS) usually occurs in adolescents and young adults, and most frequently arises in the extremities. CASE REPORT We present a rare case of metastatic alveolar RMS from a nasal primary to cervical lymph nodes (LNs) in an elderly patient, diagnosed on the fine-needle aspiration (FNA) biopsy. Smears showed malignant round cells featuring focal rhabdoid appearance, with rhabdomyoblastic differentiation further supported by immunocytochemical stains. Diagnosis of alveolar RMS was confirmed by fluorescence in situ hybridization (FISH) identifying FOXO1 gene involvement with dual colour break-apart probes at locus 13q14. DISCUSSION The differential diagnosis for a small round blue cell tumour in the elderly generally includes metastatic small cell carcinoma, lymphoma, malignant melanoma, RMS, desmoplastic small round cell tumour and Ewing's sarcoma/primitive neuroectodermal tumour. Subtle morphological analysis and expression pattern of immunostaining for skeletal muscle differentiation led to the diagnosis of RMS. Cytogenetic testing on the FOXO1 gene rearrangement helps definite subtyping of alveolar RMS.
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Affiliation(s)
- Z Zhao
- Singapore General Hospital, Division of Pathology, Department of Anatomical Pathology, Singapore.
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Lim TH, Yap E, Norhatizah BS. Facial segmental haemangioma with PHACE Syndrome successfully treated with oral propranolol. Med J Malaysia 2019; 74:447-449. [PMID: 31649228] [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: 06/10/2023]
Abstract
PHACE syndrome describes the association of large segmental haemangioma with extracutaneous features (posterior fossa anomalies, arterial, cardiac, eye and endocrine anomalies). We report a case of segmental facial infantile haemangioma with PHACE syndrome treated successfully with oral propranolol without neurological sequelae.
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Affiliation(s)
- T H Lim
- Hospital Sultanah Nora Ismail, Medical Department, Batu Pahat, Johor, Malaysia.
| | - E Yap
- Hospital Pakar Sultanah Fatimah, Dermatology Department, Muar, Johor, Malaysia
| | - B S Norhatizah
- Hospital Pakar Sultanah Fatimah, Radiology Department, Muar, Johor, Malaysia
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Affiliation(s)
- F McGain
- Footscray, Melbourne, Victoria, Australia
| | - D Story
- Footscray, Melbourne, Victoria, Australia
| | - T Lim
- Footscray, Melbourne, Victoria, Australia
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Kim W, Hur M, Park SK, Yoo S, Lim T, Yoon H, Kim JT, Bahk JH. Comparison between general, spinal, epidural, and combined spinal-epidural anesthesia for cesarean delivery: a network meta-analysis. Int J Obstet Anesth 2019; 37:5-15. [DOI: 10.1016/j.ijoa.2018.09.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 09/12/2018] [Accepted: 09/21/2018] [Indexed: 12/18/2022]
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Croker J, Mincham S, Harper C, Chee R, Ng E, Lim T. EP-1378: Stereotactic body radiotherapy in an Australia centre for biopsy proven non-small cell lung cancer. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31687-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Croker J, Ariyapperuma M, Sharma S, Mukhedkar S, Lam W, Lim T. EP-1392: Trimodality treatment of Stage III non-small cell lung cancer in Western Australia. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31701-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Showen R, Dunson C, Woodman GH, Christopher S, Lim T, Wilson SC. Locating fish bomb blasts in real-time using a networked acoustic system. Mar Pollut Bull 2018; 128:496-507. [PMID: 29571401 DOI: 10.1016/j.marpolbul.2018.01.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 09/11/2017] [Revised: 01/13/2018] [Accepted: 01/15/2018] [Indexed: 06/08/2023]
Abstract
Results are presented of a demonstration of real-time fish blast location in Sabah, Malaysia using a networked hydroacoustic array based on the ShotSpotter gunshot location system. A total of six acoustic sensors - some fixed and others mobile - were deployed at ranges from 1 to 9 km to detect signals from controlled test blasts. This allowed the blast locations to be determined to within 60 m accuracy, and for the calculated locations to be displayed on a map on designated internet-connected computers within 10 s. A smaller three-sensor system was then installed near Semporna in Eastern Sabah that determined the locations of uncontrolled blasts set off by local fishermen. The success of these demonstrations shows that existing technology can be used to protect reefs and permit more effective management of blast fishing activity through improved detection and enforcement measures and enhanced community engagement.
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Affiliation(s)
- R Showen
- ShotSpotter Inc., Suite 210, 7979 Gateway Blvd, Newark, CA 94560, USA.
| | - C Dunson
- ShotSpotter Inc., Suite 210, 7979 Gateway Blvd, Newark, CA 94560, USA
| | - G H Woodman
- Teng Hoi Conservation Organization, Room 1906, 19/F, China Insurance Group Building, 141 Des Voeux Road, Central, Hong Kong
| | - S Christopher
- Scubazoo Images Sdn. Bhd., 3, Jalan Nosoob Hungab, 88300 Kota Kinabalu, Sabah, Malaysia
| | - T Lim
- Scubazoo Images Sdn. Bhd., 3, Jalan Nosoob Hungab, 88300 Kota Kinabalu, Sabah, Malaysia
| | - S C Wilson
- Five Oceans Environmental Services LLC, P.O. Box 660, Postal Code 131, Hamriyah, Oman
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Nakamura H, Lim T, Puri P. Inflammatory bowel disease in patients with Hirschsprung's disease: a systematic review and meta-analysis. Pediatr Surg Int 2018; 34:149-154. [PMID: 28983688 DOI: 10.1007/s00383-017-4182-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [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] [Accepted: 09/21/2017] [Indexed: 12/21/2022]
Abstract
AIM AND OBJECTIVES Hirschsprung-associated enterocolitis (HAEC) continues to be an important cause of morbidity in patients with Hirschsprung's disease (HSCR). HAEC can occur at any time during the course of the disease. The reported incidence of HAEC before surgery ranges from 6 to 50%, and after surgery, it ranges from 2 to 35%. HAEC and inflammatory bowel disease (IBD) have similar clinical presentation including diarrhea, hematochezia, and abdominal pain. In recent years, isolated cases of IBD have been reported in patients who had surgical treatment for HSCR. The exact pathogenesis of HAEC or IBD is not known. However, both conditions are characterized by an abnormal intestinal mucosal barrier function, which may be a common pathway. The purpose of this meta-analysis was to determine the clinical presentation and outcome in patients with HSCR who developed IBD after pull-through operation. MATERIALS AND METHODS A systematic literature search for relevant articles was performed in four databases using the combinations of the following terms "inflammatory bowel disease", "Crohn/Crohn's disease", "ulcerative colitis", and "Hirschsprung disease/Hirschsprung's disease" for studies published between 1990 and 2017. The relevant cohorts of HSCR associated with IBD were systematically searched for clinical presentation and outcomes. RESULTS 14 studies met defined inclusion criteria, reporting a total of 66 patients who had HSCR associated with IBD. Mean age at first operation for HSCR was 5.8 months, mean age at diagnosis of IBD was 7.7 years, and the majority of patients were male (73%). The extent of aganglionosis was total colonic aganglionosis in 41% of patients, long segment in 45%, and rectosigmoid in 14%. The majority of patients underwent a Duhamel procedure (84%) for HSCR. The distribution of IBD was Crohn's disease in 72.3% of patients, ulcerative colitis in 16.9%, and others in 10.8%. Eight articles (47 patients) reported about HAEC, and 22 patients (47%) had experienced HAEC after surgery for HSCR. CONCLUSION Male patients with extensive colonic aganglionosis who continue to suffer from postoperative HAEC after a Duhamel procedure are more susceptible to develop IBD. Recognition of IBD may be important in the long-term follow-up of HSCR patients who have had postoperative HAEC.
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Affiliation(s)
- H Nakamura
- National Children's Research Centre, Our Lady's Children's Hospital, Dublin, Ireland
| | - T Lim
- Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ, USA
| | - P Puri
- National Children's Research Centre, Our Lady's Children's Hospital, Dublin, Ireland. .,School of Medicine and Medical Science and Conway Institute of Biomolecular and Biomedical Research University College Dublin, Dublin, Ireland.
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Lim T, Ico G, Jung K, Bozhilov KN, Nam J, Martinez-Morales AA. Crystal growth and piezoelectric characterization of mechanically stable ZnO nanostructure arrays. CrystEngComm 2018. [DOI: 10.1039/c8ce00799c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The highest piezoelectric performance of ZnO can be achieved by utilizing the piezoelectric operation along the c-axis due to its anisotropic permanent dipole moment.
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Affiliation(s)
- T. Lim
- College of Engineering – Center for Environmental Research and Technology
- University of California – Riverside
- Riverside
- USA
| | - G. Ico
- Department of Bioengineering
- University of California – Riverside
- Riverside
- USA
| | - K. Jung
- College of Engineering – Center for Environmental Research and Technology
- University of California – Riverside
- Riverside
- USA
- Department of Chemical and Environmental Engineering
| | - K. N. Bozhilov
- Central Facility for Advanced Microscopy and Microanalysis
- University of California – Riverside
- Riverside
- USA
| | - J. Nam
- Department of Bioengineering
- University of California – Riverside
- Riverside
- USA
| | - A. A. Martinez-Morales
- College of Engineering – Center for Environmental Research and Technology
- University of California – Riverside
- Riverside
- USA
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Lee J, Kang HG, Lim TH, Oh J, Cho Y, Cho JH. The Development of Emergency Medicine in South Korea: Academic Productivity in Highly Cited Journals. HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490791402100402] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Introduction The purpose of this study was to examine the number of publications by South Korean emergency physicians in highly cited journals and the increase in their numbers. It also sought to assess the impact factors of such publications. Methods The present study was a retrospective quantitative literature review of the publications by South Korean emergency physicians from 1996 to 2011 in the category of “emergency medicine” in the science edition of Journal Citation Reports 2011. We analysed the total number of articles published by South Korean emergency physicians and their impact factors. Results Between 1996 and 2011, the number of South Korean board-certified emergency physicians increased from 51 to 958, and 230 articles were published in 14 highly cited journals. The total impact factor (IF) of the original articles published during that period was 227.86, and the mean IF was 1.93. More than 10 articles had been published annually in the past 5 years in highly cited journals and there were over 400 South Korean board-certified emergency physicians. Conclusions Emergency medicine in South Korea started about 20 years ago, but academic productivity, indicated by at least ten articles annually in highly cited journals, was only achieved in the last five years. The mean IF of these articles was similar to that in other highly productive countries. (Hong Kong j.emerg.med. 2014;21:205-212)
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Affiliation(s)
| | | | | | | | - Y Cho
- Hallym University, Kandong Sacred Heart Hospital, Department of Emergency Medicine, College of Medicine, Seoul, Korea
| | - JH Cho
- Kangwon National University, Department of Emergency Medicine, Institute of Medical Sciences, School of Medicine, Kangwon-do, Korea
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Lai G, Nahar R, Lim T, Kwang X, Liew P, Lim J, Aung Z, Takano A, Lim W, Lau D, Tan W, Ang M, Toh C, Tan B, Devanand A, Too C, Gogna A, Ong B, Koh T, Kanesvaran R, Ng Q, Jain A, Yuan J, Lim T, Lim A, Hillmer A, Zhai W, Iyer G, Tan E, Tam W, Tan D. OA 09.07 Clonality of c-MET Copy Number Gain as a Determinant of Primary TKI Resistance in EGFR-Mutant NSCLC. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ahn Y, Jeong TS, Lim T, Jeon JY. Grading system for migrated lumbar disc herniation on sagittal magnetic resonance imaging: an agreement study. Neuroradiology 2017; 60:101-107. [PMID: 29085963 DOI: 10.1007/s00234-017-1943-7] [Citation(s) in RCA: 9] [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] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 10/18/2017] [Indexed: 11/30/2022]
Abstract
PURPOSE Migrated lumbar disc herniations (LDHs) in the sagittal plane are common. Disc migration grading can be applied as a useful measurement tool in the diagnosis, treatment, and outcome evaluation of migrated LDH. No study has evaluated the reliability of migrated LDH grading. We evaluated the reliability and functionality of the current magnetic resonance imaging (MRI) grading system for migrated LDH. METHODS We assessed a six-level grading system developed based on sagittal MRI and graded according to the direction (rostral and caudal) and degree (low, high, and very high) of disc migration. One-hundred and one migrated LDHs treated with minimally invasive endoscopic discectomy were analyzed independently by two experienced radiologists. Intraobserver and interobserver agreements were assessed by kappa statistics. RESULTS The most common migrated LDH grade was grade 4 (30.94%; caudal, low-grade migration). Rostral and caudal migrations were more common in the upper and lower lumbar levels, respectively. Interobserver agreement in the grading of migrated LDH was good at both the first (kappa = 0.737) and second assessment (kappa = 0.657). The intraobserver agreement for reader 1 was very good (kappa = 0.827) and for reader 2 was good (kappa = 0.620). CONCLUSIONS The current grading system for migrated LDH was found to be reliable and functional with good interobserver and intraobserver agreement. It may be useful in the interpretation of disc migration patterns and outcomes of various minimally invasive surgical procedures.
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Affiliation(s)
- Y Ahn
- Department of Neurosurgery, Gachon University Gil Medical Center, 21, Namdong-daero 774 beon-gil, Namdong-gu, Incheon, 21565, Republic of Korea (South Korea).
| | - T S Jeong
- Department of Neurosurgery, Gachon University Gil Medical Center, 21, Namdong-daero 774 beon-gil, Namdong-gu, Incheon, 21565, Republic of Korea (South Korea)
| | - T Lim
- Department of Radiology, Gachon University Gil Medical Center, Incheon, South Korea
| | - J Y Jeon
- Department of Radiology, Gachon University Gil Medical Center, Incheon, South Korea
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McGain F, Story D, Lim T, McAlister S. Financial and environmental costs of reusable and single-use anaesthetic equipment. Br J Anaesth 2017; 118:862-869. [PMID: 28505289 DOI: 10.1093/bja/aex098] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/21/2017] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND. An innovative approach to choosing hospital equipment is to consider the environmental costs in addition to other costs and benefits. METHODS. We used life cycle assessment to model the environmental and financial costs of different scenarios of replacing reusable anaesthetic equipment with single-use variants. The primary environmental costs were CO 2 emissions (in CO 2 equivalents) and water use (in litres). We compared energy source mixes between Australia, the UK/Europe, and the USA. RESULTS. For an Australian hospital with six operating rooms, the annual financial cost of converting from single-use equipment to reusable anaesthetic equipment would be an AUD$32 033 (£19 220), 46% decrease. In Australia, converting from single-use to reusable equipment would result in an increase of CO 2 emissions from 5095 (95% CI: 4614-5658) to 5575 kg CO 2 eq (95% CI: 5542-5608), a 480 kg CO 2 eq (9%) increase. Using the UK/European power mix, converting from single-use (5575 kg CO 2 eq) to reusable anaesthetic equipment (802 kg CO 2 eq) would result in an 84% reduction (4873 kg CO 2 eq) in CO 2 emissions, whilst in the USA converting to reusables would have led to a 2427 kg CO 2 eq (48%) reduction. In Australia, converting from single-use to reusable equipment would more than double water use from 34.4 to 90.6 kilolitres. CONCLUSIONS. For an Australian hospital with six operating rooms, converting from single-use to reusable anaesthetic equipment saved more than AUD$30 000 (£18 000) per annum, but increased the CO 2 emissions by almost 10%. The CO 2 offset is highly dependent on the power source mix, while water consumption is greater for reusable equipment.
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Affiliation(s)
- F McGain
- Department of Anaesthesia.,Department of Intensive Care, Western Health, Gordon Street, Footscray, VIC 3011, Australia
| | - D Story
- Department of Anaesthesia, Austin Hospital, Banksia Street, Heidelberg, VIC 3084, Australia
| | - T Lim
- Department of Anaesthesia
| | - S McAlister
- Ecoquantum Consulting Suite 43A Crisp Avenue, Brunswick, VIC 3056, Australia
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Teng R, Takano A, Tan WL, Ang MK, Toh CK, Ng QS, Lim WT, Tan EH, Lim T, Tan D. T790M co-exists with other secondary resistance mechanisms in EGFR mutation positive NSCLC and are associated with inferior outcomes. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx091.051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Abstract
Ganciclovir (GCV)-loaded poly(lactide-co-glycolide) (PLGA) microspheres, 125 ± 11 μm in diameter, are produced using the emulsification/solvent evaporation technique. The release rate of the drug is studied for 20 weeks in a phosphate-buffered solution of pH 7 at 37°C. The release of the drug shows a triphasic release pattern, i.e., an initial burst, a diffusive phase, and a second burst. The initial burst occurs within the first 2 days of immersion. After the burst, the release is by diffusion for up to 13 weeks, followed by another burst release, which signals the onset of bulk degradation of the PLGA polymer. The presence of GCV molecules decreases the hydrolytic rate of PLGA degradation. Gel permeation chromatography (GPC), differential scanning calorimetry (DSC), field emission scanning electron microscopy (FESEM), and ultraviolet (UV) spectroscopy are used to assess the hydrolytic degradation and drug release rate of the microspheres.
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Affiliation(s)
- X Chen
- Division of Bioengineering, School of Chemical and Biomedical Engineering, Nanyang Technological University, 639798 Singapore
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Lim T, Jani A, Cooper S, Rossi P. Better Toxicity Outcomes With HDR and LDR Brachytherapy in Comparison With External Beam Radiation Therapy for Prostate Cancer. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Song Y, Oh J, Chee Y, Cho Y, Lee S, Lim TH. Effectiveness of chest compression feedback during cardiopulmonary resuscitation in lateral tilted and semirecumbent positions: a randomised controlled simulation study. Anaesthesia 2015; 70:1235-41. [PMID: 26349025 DOI: 10.1111/anae.13222] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/27/2015] [Indexed: 11/30/2022]
Abstract
Feedback devices have been shown to improve the quality of chest compression during cardiopulmonary resuscitation for patients in the supine position, but no studies have reported the effects of feedback devices on chest compression when the chest is tilted. Basic life support-trained providers were randomly assigned to administer chest compressions to a manikin in the supine, 30° left lateral tilt and 30° semirecumbent positions, with or without the aid of a feedback device incorporated into a smartphone. Thirty-six participants were studied. The feedback device did not affect the quality of chest compressions in the supine position, but improved aspects of performance in the tilted positions. In the lateral tilted position, the median (IQR [range]) chest compression rate was 99 (99-100 [96-117]) compressions.min(-1) with and 115 (95-128 [77-164]) compressions.min(-1) without feedback (p = 0.05), and the proportion of compressions of correct depth was 55 (0-96 [0-100])% with and 1 (0-30 [0-100])% without feedback (p = 0.03). In the semirecumbent position, the proportion of compressions of correct depth was 21 (0-87 [0-100])% with and 1 (0-26 [0-100])% without feedback (p = 0.05). Female participants applied chest compressions at a more accurate rate using the feedback device in the lateral tilted position but were unable to increase the chest compression depth, whereas male participants were able to increase the force of chest compression using the feedback device in the lateral tilted and semirecumbent positions. We conclude that a feedback device improves the application of chest compressions during simulated cardiopulmonary resuscitation when the chest is tilted.
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Affiliation(s)
- Y Song
- School of Electrical Engineering, University of Ulsan, Ulsan, Korea
| | - J Oh
- Department of Emergency Medicine, College of Medicine, Hanyang University, Seoul, Korea
| | - Y Chee
- School of Electrical Engineering, University of Ulsan, Ulsan, Korea
| | - Y Cho
- Department of Emergency Medicine, College of Medicine, Hallym University Kangdong Sacred Heart Hospital, Seoul, Korea
| | - S Lee
- Department of Emergency Medicine, College of Medicine, Hanyang University, Seoul, Korea
| | - T H Lim
- Department of Emergency Medicine, College of Medicine, Hanyang University, Seoul, Korea
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Lim TH, Cho YA, Choi DH. Effects of cilostazol on the pharmacokinetics of carvedilol after oral and intravenous administration in rats. J Physiol Pharmacol 2015; 66:591-597. [PMID: 26348083] [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] [Received: 01/13/2015] [Accepted: 06/02/2015] [Indexed: 06/05/2023]
Abstract
This study was designed to investigate the effects of cilostazol on the pharmacokinetics of carvedilol following oral or intravenous administration of carvedilol in rats. Clinically carvedilol and cilostazol can be prescribed for treatment of cardiovascular diseases. Carvedilol and cilostazol are all substrates of CYP2C9 enzymes. Carvedilol was administered orally or intravenously without or with oral administration of cilostazol to rats. The effects of cilostazol on cytochrome P450 (CYP) 2C9 activity and P-gp activity were also evaluated. Cilostazol inhibited CYP2C9 activity in a concentration-dependent manner with 50% inhibitory concentration (IC(50)) of 8.7 μM. Compared with the control group, the area under the plasma concentration-time curve (AUC) of carvedilol was significantly (P < 0.05) increased by 38.0%. The peak concentration (C(max)) was significantly (P < 0.05) increased by 49.2% in the presence of cilostazol after oral administration of carvedilol. Consequently, the relative bioavailability (R.B.) of carvedilol was increased by 1.15 - 1.38-fold, and the absolute bioavailability (A.B.) of carvedilol in the presence of cilostazol was significantly (P < 0.05) higher than that of the control. After intravenous administration, the AUC of carvedilol was significantly (P < 0.05) increased by 19.2% compared to that in the control by cilostazol. These results suggest that cilostazol effectively inhibited the metabolism of carvedilol. The increased oral bioavailability of carvedilol might be due to the inhibition of CYP2C9-mediated metabolism of carvedilol in the liver by cilostazol.
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Affiliation(s)
- T H Lim
- Department of Pharmacy, Chosun University Hospital, Gwangju, Republic of Korea
| | - Y A Cho
- Biomedical Research Institute, Kyeongsang National University Hospital, Jinju, Republic of Korea
| | - D H Choi
- Department of Internal Medicine, School of Medicine, Chosun University, Gwangju, Republic of Korea.
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Lim T, Wang J, Frank S, Stafford R, Bruno T, Bathala T, Mahmood U, Pugh T, Ibbott G, Kudchadker R. SU-E-J-214: MR Protocol Development to Visualize Sirius MRI Markers in Prostate Brachytherapy Patients for MR-Based Post-Implant Dosimetry. Med Phys 2015. [DOI: 10.1118/1.4924300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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31
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Ee S, Young S, Tan E, Lim D, Tan G, Jain A, Zeng W, Lim T, Takano A, Tan D. Clinical Characteristics and Response to EGFR TKI in Never Smoker Squamous Lung Cancer. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv050.20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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32
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Nalliah C, Lim T, Qian P, Bhaskaran A, Kurup R, Kizana E, Kovoor P, Ross D, Thomas S. Left atrial surface area remaining not isolated after ablation of persistent atrial fibrillation predicts long-term outcomes. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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33
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Lim T, Prabhu R, Switchenko J, Mister D, Torres M. Skin Sparing Mastectomy and Immediate Reconstruction in Locally Advanced Breast Cancer Patients Treated With Neoadjuvant Chemotherapy and Postmastectomy Radiation Therapy: Long-Term Oncologic and Patient-Reported Quality of Life Outcomes. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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34
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Lim T, Kim T. Locally advanced or metastatic pancreatic cancer in elderly patients: Chemotherapy versus best supportive care. J Geriatr Oncol 2014. [DOI: 10.1016/j.jgo.2014.06.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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35
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Lim T, Wang J, Kudchadker R, Stafford R, Bathala T, Pugh T, Ibbott G, Frank S. SU-C-17A-02: Sirius MRI Markers for Prostate Post-Implant Assessment: MR Protocol Development. Med Phys 2014. [DOI: 10.1118/1.4889729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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36
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Lim TH. Future of Cardiac-CT. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1372912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Abstract
BACKGROUND Asthma is becoming more prevalent with large numbers of individuals suffering from work-exacerbated asthma. AIMS To examine the characteristics of workplace exposures and working days lost in relation to work-exacerbated asthma (WEA) in a workers' compensation population. METHODS An analysis of accepted workers' compensation asthma claims in Ontario over a 5-year period. Claims among the top three industry groups were categorized based on working time lost of 1 day or less, 2-5 days and 6 days or more. Attributable agents were subdivided into dusts, smoke, chemicals and sensitizers. RESULTS Among the asthma claims, 72% (645) fulfilled criteria for WEA from their history. The commonest industry groups were services, education and health care, with 270 claims that met our analysis requirements. Within these industry groups, education had a lower proportion of workers with short exacerbations (missing 1 day or less: 27%) while the health care industry had a higher than expected proportion of short exacerbations (55%). The agents to which WEA was attributed differed across the groups, with dusts having the highest proportion in the education group (65%), smoke in the service industry (34%) and sensitizers in health care (41%). Those agents more commonly attributed to exacerbations tended to have lower rates of prolonged exacerbation compared with less commonly involved agents. CONCLUSIONS The morbidity of WEA and the type of agents to which it was attributed varied between industry groups.
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Affiliation(s)
- T Lim
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada M5T 2S8
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van Grieken NCT, Aoyama T, Chambers PA, Bottomley D, Ward LC, Inam I, Buffart TE, Das K, Lim T, Pang B, Zhang SL, Tan IB, Carvalho B, Heideman DAM, Miyagi Y, Kameda Y, Arai T, Meijer GA, Tsuburaya A, Tan P, Yoshikawa T, Grabsch HI. Erratum: KRAS and BRAF mutations are rare and related to DNA mismatch repair deficiency in gastric cancer from the East and the West: Results from a large international multicentre study. Br J Cancer 2014. [PMCID: PMC3899782 DOI: 10.1038/bjc.2013.824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Tan CS, Chew MC, Lim TH. Comparison of foveal-sparing with foveal-involving photodynamic therapy for myopic choroidal neovascularization. Eye (Lond) 2013; 28:17-22. [PMID: 24051405 DOI: 10.1038/eye.2013.204] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Accepted: 08/04/2013] [Indexed: 11/09/2022] Open
Abstract
PURPOSE To evaluate the visual outcomes of choroidal neovascularization (CNV) secondary to pathological myopia in eyes treated with photodynamic therapy (PDT), and to determine the effect of lesion location and foveal involvement on visual prognosis. METHODS Interventional case series of 24 consecutive patients with myopic CNV treated with PDT. The main outcome measure was final LogMAR visual acuity (VA). RESULTS Of 24 eyes, the CNV lesion was subfoveal in 11 and extrafoveal in 13. Overall, the mean LogMAR VA at 24 months was 0.72. Extrafoveal CNV lesions achieved significantly better final VA compared with subfoveal CNV (LogMAR 0.45 vs 1.05, P=0.012). Eyes with extrafoveal CNV lesions were subdivided into foveal-sparing PDT (where the PDT laser spot did not involve the foveal center) and foveal-involved PDT (where the PDT laser covered the fovea). At all time points, the group with foveal-sparing PDT had significantly better VA compared with the foveal-involved group. The final LogMAR VA for the foveal-sparing PDT group was 0.26 compared with 1.00 for the foveal-involved PDT group (P=0.003). At 24 months, 77.8% of foveal-sparing PDT cases achieved VA of ≥ 20/40, compared with 25% of foveal-involved PDT cases and 9.1% of subfoveal CNV lesions (P=0.006). CONCLUSION For patients with myopic CNV, foveal-sparing PDT results in significantly better long-term visual outcomes compared with those with foveal-involved PDT. Foveal-sparing PDT may be of value for treatment of myopic CNV patients who are not suitable for treatment with anti-vascular endothelial growth factor injections.
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Affiliation(s)
- C S Tan
- 1] Department of Ophthalmology, National Healthcare Group Eye Institute, Tan Tock Seng Hospital, Singapore [2] Fundus Image Reading Center, National Healthcare Group Eye Institute, Singapore
| | - M C Chew
- Department of Ophthalmology, National Healthcare Group Eye Institute, Tan Tock Seng Hospital, Singapore
| | - T H Lim
- 1] Department of Ophthalmology, National Healthcare Group Eye Institute, Tan Tock Seng Hospital, Singapore [2] Fundus Image Reading Center, National Healthcare Group Eye Institute, Singapore
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Lim TH, Wasywich CA, Ruygrok PN. A fatal case of 'magic mushroom' ingestion in a heart transplant recipient. Intern Med J 2013; 42:1268-9. [PMID: 23157524 DOI: 10.1111/j.1445-5994.2012.02955.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2012] [Accepted: 05/30/2012] [Indexed: 11/30/2022]
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41
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Nalliah C, Lim T, Koay C, Chik W, Thelander J, Zecchin R, Ross D, Thomas S. Characterisation of Symptoms in Patients With Recurrent Atrial Arrhythmia Following Catheter Ablation. Heart Lung Circ 2013. [DOI: 10.1016/j.hlc.2013.05.254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Eisenstein A, Leung L, Lim T, Ning Z, Polanyi JC. Reaction dynamics at a metal surface; halogenation of Cu(110). Faraday Discuss 2012; 157:337-53; discussion 375-98. [DOI: 10.1039/c2fd20023f] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Adam BW, Hall EM, Sternberg M, Lim TH, Flores SR, O'Brien S, Simms D, Li LX, De Jesus VR, Hannon WH. The stability of markers in dried-blood spots for recommended newborn screening disorders in the United States. Clin Biochem 2011; 44:1445-50. [PMID: 21963384 PMCID: PMC4557772 DOI: 10.1016/j.clinbiochem.2011.09.010] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2011] [Revised: 09/12/2011] [Accepted: 09/13/2011] [Indexed: 11/15/2022]
Abstract
OBJECTIVE We aimed to measure separately the contributions of heat and humidity to changes in levels of 34 markers of inborn disorders in dried-blood-spot (DBS) samples. DESIGN AND METHODS We stored paired sets of DBSs at 37°C for predetermined intervals in low-humidity and high-humidity environments. Marker levels of all samples in each complete sample set were measured in a single analytic run. RESULTS During the 30 ± 5 day studies, galactose-1-phosphate uridyltransferase and biotinidase lost almost 65% of initial activities in low-humidity storage; most of the degradation in 27 other markers was attributable to adverse effects of high-humidity storage; seven markers in DBSs stored at high humidity lost more than 90% of initial levels by the end of the study and 4 of the 7 lost more than 50% of initial levels within the first week of storage. CONCLUSIONS Minimizing both humidity and temperature in DBS transportation and storage environments is essential to maintaining sample integrity.
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Affiliation(s)
- B W Adam
- Centers for Disease Control and Prevention, 4770 Buford Highway NE, Atlanta, GA 30341, USA.
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Ramakrishnan PS, Hong J, Martin JA, Kurriger GL, Buckwalter JA, Lim TH. Biomechanical disc culture system: feasibility study using rat intervertebral discs. Proc Inst Mech Eng H 2011; 225:611-20. [PMID: 22034744 DOI: 10.1177/2041303310394919] [Citation(s) in RCA: 2] [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: 11/15/2022]
Abstract
A small-scale biomechanical disc culture system was designed to stimulate intervertebral disc (IVD) 'motion segment' in culture environment with load-controlled compression and combined load (compression+shear). After 7 days of diurnal mechanical loading, cell viability of discs stimulated with static compression load (0.25 MPa) and static combined load (compression (0.25 MPa)+shear (1.5N)) were similar (>90 per cent) to unloaded controls. Mechanically stimulated discs showed decrease in static/dynamic moduli, early stress relaxation, and loss of disc height after 7 days of diurnal loading. Histological data of discs indicated load-induced transformations that were not apparent in controls. The feasibility of studying the mechanobiology of intact IVD as a motion segment was demonstrated. Media conditioning (improve tissue stability in long-term culture) and application of biochemical gene expression assays (differential tissue response to types of mechanical stimulation) are proposed as future improvements. The study suggests that the limitations in studying mechanobiology of IVD pathology in vitro can be overcome and it is possible to understand the physiologically relevant mechanism of IVD pathology.
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Affiliation(s)
- P S Ramakrishnan
- Department of Orthopaedic Surgery, University of Iowa, Iowa City, IA, USA
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Kang H, Cho Y, Choi H, Kang B, Lim T. 355 Comparison of Usefulness Between Linear Probe and Microconvex Probe in Ultrasound-Guided Central Venous Catheterization. Ann Emerg Med 2011. [DOI: 10.1016/j.annemergmed.2011.06.387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Tan EH, Goh C, Lim WT, Soo KC, Khoo ML, Tan T, Tan DSW, Ang MK, Ng QS, Tan PH, Lim A, Hwang J, Teng YHF, Lim TH, Tan SH, Baskaran N, Hui KM. Gefitinib, cisplatin, and concurrent radiotherapy for locally advanced head and neck cancer: EGFR FISH, protein expression, and mutational status are not predictive biomarkers. Ann Oncol 2011; 23:1010-6. [PMID: 21768327 DOI: 10.1093/annonc/mdr327] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Gefitinib was demonstrated to be synergistic with cisplatin and radiotherapy (RT) in in vitro studies. Biomarkers predictive of response to gefitinib in squamous cell head and neck cancer is still lacking. METHODS Thirty-one patients with locally advanced and easily accessible primary tumor sites for biopsies were recruited. Gefitinib was started 3 weeks before the start of cisplatin/concurrent radiotherapy (CTRT) and continued during the CTRT phase and thereafter for 4 months as consolidation phase. Two baselines and a repeat tumor sample were taken after 2 weeks of gefitinib alone to study its impact on tumor gene expression. Epidermal growth factor receptor (EGFR) protein expression, FISH and mutational status, and matrix metallopeptidase 11 (MMP11) protein expression were correlated with response and survival outcome. RESULTS The overall response rate to gefitinib alone was 9.7%. The survival outcome is as follows: median disease free 1.3 years, median survival time 2.4 years, 3-year disease free 42.9%, and 3-year overall survival 48.4%. EGFR FISH, protein expression, and mutational status did not predict for response nor survival outcome of patients. Although MMP11 overexpression did not predict for response, it predicted significantly for a poorer survival outcome. CONCLUSIONS Gefitinib can be combined safely with cisplatin/RT. More studies are needed to uncover predictive biomarkers of benefit to gefitinib.
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Affiliation(s)
- E-H Tan
- Department of Medical Oncology, National Cancer Centre, Singapore.
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Mánuel JM, Morales FM, Lozano JG, García R, Lim T, Kirste L, Aidam R, Ambacher O. Growth and characterization of InAlN layers nearly lattice-matched to GaN. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pssc.201000985] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Park S, Ahn HK, Lim T, Park YH, Ahn JS, Im Y. CA 15-3 elevations according to breast cancer subtypes at initial diagnosis of metastatic breast cancer (MBC). J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e11109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Poh BK, Mancer K, Goh D, Lim T, Ng V, Ng KK, Ng FC. PlasmaKinetic™ (bipolar) transurethral resection of prostate: a prospective trial to study pathological artefacts, surgical parameters and clinical outcomes. Singapore Med J 2011; 52:336-339. [PMID: 21633766] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
INTRODUCTION The aims of the study were to compare the degree of cautery artefacts in prostatic chips between monopolar and PlasmaKinetic™ transurethral resection of prostate (TURP), and to determine if there is any difference in the intraoperative and post surgical parameters between them. METHODS After institutional review board approval, patients were prospectively enrolled to undergo PlasmaKinetic™ TURP. Their parameters were compared with those of the historical monopolar TURP controls. All histological specimens were reviewed by a single senior pathologist. RESULTS 46 patients were recruited to undergo PlasmaKinetic™ TURP. The resection time was significantly longer for the bipolar group compared to the monopolar group (50.2 versus 36.7 min, p-value is 0.001). The speed of resection (resection weight/time) was lower for the bipolar group (0.45 versus 0.56 g/min, p-value is 0.017). More irrigant was used for the bipolar group (21.2 versus 15.6 litres, p-value is 0.001) intraoperatively. There was no statistically significant difference in terms of intraoperative drop in haemoglobin and serum sodium change between the two groups. There seems to be a lesser degree of cautery artefacts in the PlasmaKinetic™ group than the monopolar group (42.17 versus 45.07 microns); however, this was not statistically significant (p-value is 0.452). CONCLUSION Bipolar TURP seems to result in a lesser degree of cautery artefacts when compared to conventional monopolar TURP, albeit statistically insignificant, compared to monopolar TURP. TURP also resulted in a longer resection time and increased irrigant use, but no difference in blood loss and serum sodium levels.
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Affiliation(s)
- B K Poh
- Department of Urology, Changi General Hospital, 2 Simei Street 3, Singapore 529889.
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