1.Postmenopausal Osteoporosis: Screening & Diagnosis based on FRAX® and BMD
The Singapore Family Physician 2021;47(3):5-7
Osteoporosis is a common ailment, especially in older women, yet it is one of the most under-diagnosed and undertreated diseases. Screening of patients, therefore, is invaluable to identify those who require further evaluation. We shall discuss who requires screening and further evaluation of osteoporosis and discuss the diagnosis of osteoporosis.
2.FOREIGN BODY IN THE EYE
The Singapore Family Physician 2015;41(3):18-19
One of the most common eye conditions that is seen in the
outpatient setting is that of a foreign body in the eye. It is important to recognise the red flags and know when to refer to an ophthalmologist for further management.
3.A practical approach to secondary osteoporosis - Case studies in Asia.
Osteoporosis and Sarcopenia 2016;2(3):134-139
Osteoporosis is a major health disease that is increasing in Asia especially given the rapidly aging population in many of the countries. A major aim of the management of osteoporosis is to prevent the next fracture from happening and its attendant morbidity and possible mortality. A failure to identify a possible secondary cause of osteoporosis might lead to suboptimal benefits of treatment or possibly treatment failure. This article aims to use a series of cases in order to best illustrate the approach to the screening of secondary causes of osteoporosis and highlight learning points from each case with a slant towards the management of patients in Asia, focusing on the East and South East Asia (SEA).
Aging
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Asia*
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Far East
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Humans
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Learning
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Mass Screening
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Mortality
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Osteoporosis*
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Treatment Failure
4.Metastatic follicular thyroid carcinoma as a cause of low serum thyroxine with a normal thyroid stimulating hormone level
Journal of the ASEAN Federation of Endocrine Societies 2017;32(1):57-59
Thyroid function is usually normal in differentiated thyroid carcinoma. We describe a case of a female patient who had metastatic follicular thyroid carcinoma (FTC) to the spine and lungs, who was clinically euthyroid but had very low free tetraiodothyronine (fT4) and normal thyroid stimulating hormone (TSH). Free triiodothyronine (fT3) and total T3 (TT3) were normal. Levothyroxine treatment increased fT4 marginally but caused a two- to three-fold rise in fT3 and TT3 along with suppressed TSH. This is likely due to hyperconversion of T4 to T3 from elevation in D2 deiodinase activity in the tumor. This phenomenon has been reported to occur in about 20% of metastatic FTC.
Adenocarcinoma, Follicular
5.Metastatic Follicular Thyroid Carcinoma as a cause of low serum thyroxine with a Normal Thyroid stimulating hormone level
Journal of the ASEAN Federation of Endocrine Societies 2016;31(11):57-59
Thyroid function is usually normal in differentiated thyroid carcinoma. We describe a case of a female patient who had metastatic follicular thyroid carcinoma (FTC) to the spine and lungs, who was clinically euthyroid but had very low free tetraiodothyronine (fT4) and normal thyroid stimulating hormone (TSH). Free triiodothyronine (fT3) and total T3 (TT3) were normal. Levothyroxine treatment increased fT4 marginally but caused a two- to three-fold rise in fT3 and TT3 along with suppressed TSH. This is likely due to hyperconversion of T4 to T3 from elevation in D2 deiodinase activity in the tumor. This phenomenon has been reported to occur in about 20% of metastatic FTC.
Adenocarcinoma, Follicular
6.Incidence and trends of ophthalmic cancer in Singapore: Data from Singapore Cancer Registry.
Chin Sheng TEOH ; Preethi JEYABAL ; Stephanie M YOUNG ; Vivien S Y LIM
Annals of the Academy of Medicine, Singapore 2021;50(4):297-305
INTRODUCTION:
Limited data are available on the incidence of primary ophthalmic cancers worldwide. We describe the incidence and trends of primary ophthalmic cancers in Singapore.
METHODS:
Data on ophthalmic cancers diagnosed in Singapore from 1996 to 2016 were retrieved from the Singapore Cancer Registry for analysis. All were histologically proven primary ophthalmic cancers. Calculations of incidence and age-specific frequency of ophthalmic malignancy were made.
RESULTS:
A total of 297 cases were included, with males constituting 59.9%. The race distribution was 78.5% Chinese, 16.5% Malay, 3.7% Indians and 1.3% others. There was an overall increase in ophthalmic malignancies. The mean age of onset was 47.4 years. The most common cancers were retinoblastoma (93.3%) in patients younger than 15 years, and lymphoma (71.3%) in patients aged 15 years and older. There has been an increase in lymphomas from 16.7% in 1968-1995 to 71.3% in 1996-2016 in those aged 15 years and older. The most common types of ophthalmic cancer according to location are lymphoma of the orbit, conjunctiva, cornea and lacrimal gland; retinoblastoma of the retina; and malignant melanoma of the choroid and ciliary body.
CONCLUSION
Our study reported the incidence and trends of ophthalmic cancer in the Singapore population and showed an overall increase in ophthalmic malignancies in Singapore from 1996-2016. A substantial increase in lymphomas over the last 2 decades was noted. The data could aid clinicians, epidemiologists and policymakers in implementing strategies to address trends in ophthalmic cancers and spur aetiological research to improve quality of life in patients with such cancers.
7.Reliability of Graders and Comparison with an Automated Algorithm for Vertical Cup-Disc Ratio Grading in Fundus Photographs.
Weihan TONG ; Maryanne ROMERO ; Vivien LIM ; Seng Chee LOON ; Maya E SUWANDONO ; Yu SHUANG ; Xiao DI ; Yogi KANAGASINGAM ; Victor KOH
Annals of the Academy of Medicine, Singapore 2019;48(9):282-289
INTRODUCTION:
We aimed to investigate the intergrader and intragrader reliability of human graders and an automated algorithm for vertical cup-disc ratio (CDR) grading in colour fundus photographs.
MATERIALS AND METHODS:
Two-hundred fundus photographs were selected from a database of 3000 photographs of patients screened at a tertiary ophthalmology referral centre. The graders included glaucoma specialists (n = 3), general ophthalmologists (n = 2), optometrists (n = 2), family physicians (n = 2) and a novel automated algorithm (AA). In total, 2 rounds of CDR grading were held for each grader on 2 different dates, with the photographs presented in random order. The CDR values were graded as 0.1-1.0 or ungradable. The grading results of the 2 senior glaucoma specialists were used as the reference benchmarks for comparison.
RESULTS:
The intraclass correlation coefficient values ranged from 0.37-0.74 and 0.47-0.97 for intergrader and intragrader reliability, respectively. There was no significant correlation between the human graders' level of reliability and their years of experience in grading CDR ( = 0.91). The area under the curve (AUC) value of the AA was 0.847 (comparable to AUC value of 0.876 for the glaucoma specialist). Bland Altman plots demonstrated that the AA's performance was at least comparable to a glaucoma specialist.
CONCLUSION
The results suggest that AA is comparable to and may have more consistent performance than human graders in CDR grading of fundus photographs. This may have potential application as a screening tool to help detect asymptomatic glaucoma-suspect patients in the community.
8.The Chromosomal DNA Damage in Buccal Mucosa Cells among Schools Children in The Vicinity Of Mobile Base Stations in Selangor
Malaysian Journal of Medicine and Health Sciences 2019;15(SP4):124-129
Abstract
Introduction: The increased use of mobile phones has increased the mobile base stations (MBS) deployment. While understanding of radiation protection is growing among the public, questions regarding early-life exposure to radiofrequency radiation (RFR) from MBS in children are of importance as to whether it will raise the chances of developing chronic diseases during adulthood. Taking into account the sitting location of MBS, the purpose of this study is to evaluate the chromosomal DNA damage in buccal mucosal cells between school children exposed to RFR emitted from base station antennas. Method: This is a comparative cross-sectional study in which two group of school children were sampled i.e. exposed groups are children whose school located near MBS (≤200 meters); unexposed groups are children whose school located distant far from the MBS (>200 meters). Digital RF Analyzer was used to measure RFR at the school surrounding. Buccal mucosa cells from the oral cavity were sampled to examine the level of micronuclei (MN) frequencies. Results: This study found that the densities of the RFR energy differed in range. Although all measurements showed the RFR reading below the acceptable exposure level, there were still significant variations at each location assessed. Statistically, the MN frequency is significantly different when compared to the exposed and non-exposed group. Conclusion: To understand the mechanism of health effects from exposure to low-level RFR emited from MBS, further study should consider environmental factors influencing MBS sitting on RFR emission, as well as examining the health effects into molecular levels.
9.Easy-to-learn cardiopulmonary resuscitation training programme: a randomised controlled trial on laypeople's resuscitation performance.
Rachel Jia Min KO ; Swee Han LIM ; Vivien Xi WU ; Tak Yam LEONG ; Sok Ying LIAW
Singapore medical journal 2018;59(4):217-223
INTRODUCTIONSimplifying the learning of cardiopulmonary resuscitation (CPR) is advocated to improve skill acquisition and retention. A simplified CPR training programme focusing on continuous chest compression, with a simple landmark tracing technique, was introduced to laypeople. The study aimed to examine the effectiveness of the simplified CPR training in improving lay rescuers' CPR performance as compared to standard CPR.
METHODSA total of 85 laypeople (aged 21-60 years) were recruited and randomly assigned to undertake either a two-hour simplified or standard CPR training session. They were tested two months after the training on a simulated cardiac arrest scenario. Participants' performance on the sequence of CPR steps was observed and evaluated using a validated CPR algorithm checklist. The quality of chest compression and ventilation was assessed from the recording manikins.
RESULTSThe simplified CPR group performed significantly better on the CPR algorithm when compared to the standard CPR group (p < 0.01). No significant difference was found between the groups in time taken to initiate CPR. However, a significantly higher number of compressions and proportion of adequate compressions was demonstrated by the simplified group than the standard group (p < 0.01). Hands-off time was significantly shorter in the simplified CPR group than in the standard CPR group (p < 0.001).
CONCLUSIONSimplifying the learning of CPR by focusing on continuous chest compressions, with simple hand placement for chest compression, could lead to better acquisition and retention of CPR algorithms, and better quality of chest compressions than standard CPR.
Adult ; Age Factors ; Algorithms ; Cardiopulmonary Resuscitation ; education ; Checklist ; Female ; Heart ; Heart Arrest ; Humans ; Learning ; Male ; Manikins ; Middle Aged ; Pressure ; Prospective Studies ; Resuscitation ; education ; Sex Factors ; Young Adult