1.Cross-reaction of Sera from COVID-19 Patients with SARS-CoV Assays.
Wei Yee WAN ; Siew Hoon LIM ; Eng Hong SENG
Annals of the Academy of Medicine, Singapore 2020;49(7):523-526
Antibodies, Viral
;
physiology
;
Betacoronavirus
;
physiology
;
Clinical Laboratory Techniques
;
Coronavirus Infections
;
diagnosis
;
Cross Reactions
;
physiology
;
Enzyme-Linked Immunosorbent Assay
;
Fluorescent Antibody Technique, Indirect
;
Humans
;
Pandemics
;
Pneumonia, Viral
;
diagnosis
;
SARS Virus
;
physiology
2.Prospective audit of febrile neutropenia management at a tertiary university hospital in Singapore.
Jing JIN ; Yee Mei LEE ; Ying DING ; Liang Piu KOH ; Siew Eng LIM ; Robert LIM ; Paul Ananth TAMBYAH ; Li Yang HSU
Annals of the Academy of Medicine, Singapore 2010;39(6):453-459
INTRODUCTIONFebrile neutropenia (FN) remains a major cause of morbidity and mortality in Oncology/Haematology units. We launched a new protocol for FN management that incorporates risk stratification at our institute from October 2008. An audit was performed concurrently to evaluate the protocol and to define the epidemiology of FN locally.
MATERIALS AND METHODSCase records of all inpatients with FN between October 2008 and June 2009 were reviewed prospectively. Clinical and microbiological characteristics were collated along with outcomes and programme adherence. Statistical testing was performed using Stata 10.1.
RESULTSThere were 178 FN episodes (50 in patients with solid cancers) from 131 patients. Forty-two (23.6%) episodes were classified as high-risk according to MASCC criteria. Initial blood cultures were positive in 49 (27.5%) episodes, of which gram-negative bacilli (GNB) predominated. Overall compliance to the protocol was 56.7%, with the main issue being disinclination to use oral antibiotics as fi rst-line empirical therapy for low-risk episodes. Overall mortality was 7.3% and infection-related mortality was 4.5%. High-risk FN and the presence of central venous catheters were independently associated with bacteraemia on multivariate analysis, but there were no independent predictors of infection-related mortality.
CONCLUSIONSGNB accounted for the majority of bloodstream infections at our institute, unlike data from developed countries. Uptake of the new FN protocol was satisfactory, although the use of oral antibiotics as fi rst-line empirical therapy can be improved. A better method for predicting infections caused by antibiotic-resistant GNB is urgently required, and antibiotic resistance trends should be monitored to enable the implementation of more appropriate antibiotic regimens over time.
Adult ; Aged ; Aged, 80 and over ; Drug Resistance, Microbial ; Female ; Fever ; drug therapy ; physiopathology ; Gram-Negative Bacteria ; Hospitals, University ; Humans ; Male ; Medical Audit ; Middle Aged ; Neutropenia ; drug therapy ; physiopathology ; Outcome Assessment (Health Care) ; Prospective Studies ; Severity of Illness Index ; Singapore ; Young Adult
3.Prevalence and factors associated with internet addiction among medical students - A cross-sectional study in Malaysia
Siew Mooi Ching ; Hamidin Awang ; Vasudevan Ramachandran ; Sazlyna Mohd Sazlly Lim ; Wan Aliaa Wan Sulaiman ; Yoke Loong Foo ; Anne Yee ; Fankee Hoo
The Medical Journal of Malaysia 2017;72(1):7-11
Introduction: Internet is important to university students,
especially for medical students who use it to search for
literature and relevant information. However, some of the
users are experiencing a gradual loss of the ability to reduce
the duration and frequency of their internet activities,
despite the negative consequences. The literature on
internet usage among Malaysian medical students is limited.
This study aims to determine the prevalence and factors
associated with internet usage among medical students in a
public university in Malaysia.
Methods: This cross-sectional study was performed among
all the medical students (Year 1-5). Students were assessed
on their internet activities using the internet addiction
questionnaires (IAT). A Multiple Logistic Regression was
used for data analysis.
Results: The study was conducted among 426 students. The
study population consisted of 156 males (36.6%) and 270
females (63.4%). The mean age was 21.6 ±1.5 years.
Ethnicity distribution among the students was: Malays
(55.6%), Chinese (34.7%), Indians (7.3%) and others (2.3%).
According to the IAT, 36.9% of the study sample was
addicted to the internet. Using the multivariate logistic
regression analysis, we have found that the use of internet
access for entertainment purposes (odds ratio [OR] 3.5, 95%
confidence interval [CI] 1.05-12.00), male students (OR 1.8,
95% CI 1.01-3.21) and increasing frequency of internet usage
were associated with internet addiction (OR 1.4, 95% CI 1.09-
1.67).
Conclusion: Internet addiction is a relatively frequent
phenomenon among medical students. The predictors of
internet addiction were male students using it for surfing
and entertainment purposes.
Internet
;
Students, Medical
4.Prospective audit of post-chemotherapy febrile neutropenia in patients with solid cancer and lymphoma in two Singaporean cancer centres.
Mabel WONG ; Jing JIN ; Min Han TAN ; Yee Mei LEE ; Ten Eng LEE ; Ying DING ; Hong Chan YONG ; Siew Eng LIM ; Louis Ya CHAI ; Noan Minh CHAU ; Li Yang HSU
Annals of the Academy of Medicine, Singapore 2012;41(7):287-293
INTRODUCTIONFebrile neutropenia (FN) is a significant cause of mortality and morbidity in oncology and haematology units worldwide. The overall mortality in hospital surveys in Singapore surveys on post-chemotherapy FN has ranged between 3.0% and 8.8%. However, recent evidence indicates that outpatient management of patients with low-risk FN is safe and cost-effective.
MATERIALS AND METHODSWe conducted a prospective audit on a cohort of adult patients with post-chemotherapy FN seen at 2 local public sector cancer centres over a 1-year period in order to define their epidemiological characteristics and outcomes, and also to assess the uptake of early discharge/outpatient management strategies for these patients.
RESULTSWe reviewed 306 FN episodes from 248 patients. Patient characteristics and outcomes were similar between both institutions. Eleven (3.7%) FN episodes were managed as outpatient and none developed complications. Overall 30-day mortality was 6.6%, while the median length of stay (LOS) was 7 days (IQR: 4 to 11 days). The only independent risk factor for mortality was severe sepsis (OR:13.19; 95% CI: 1.98 to 87.7; P = 0.008). Factors independently associated with a longer LOS were vancomycin prescription (coefficient: 0.25; 95% CI: 0.08 to 0.41; P = 0.003), longer duration of intravenous antibiotics (coefficient: 0.08; 95% CI: 0.06 to 0.10; P <0.001), and prior review by an infectious diseases physician (coefficient: 0.16; 95% CI: 0.01 to 0.31; P = 0.034).
CONCLUSIONThis audit demonstrated that mortality from FN in our 2 cancer centres is low and comparable to international institutions. It also demonstrates that outpatient management of FN is safe in selected patients, and can be further expanded for right-siting of resources.
Adult ; Anti-Bacterial Agents ; therapeutic use ; Antineoplastic Agents ; adverse effects ; Bacterial Infections ; epidemiology ; Cohort Studies ; Female ; Fever ; epidemiology ; etiology ; Humans ; Male ; Middle Aged ; Mycoses ; epidemiology ; Neoplasms ; complications ; drug therapy ; Neutropenia ; epidemiology ; etiology ; Prospective Studies ; Singapore ; epidemiology
5.Comprehensive characterization of genomic features and clinical outcomes following targeted therapy and secondary cytoreductive surgery in OCCC: a single center experience
Silvana Talisa WIJAYA ; Natalie YL NGOI ; Jerold WZ LOH ; Tuan Zea TAN ; Diana LIM ; Irfan Sagir KHAN ; Yee Liang THIAN ; Alexa LAI ; Bertrand WL ANG ; Pearl TONG ; Joseph NG ; Jeffrey JH LOW ; Arunachalam ILANCHERAN ; Siew Eng LIM ; Yi Wan LIM ; David SP TAN
Journal of Gynecologic Oncology 2024;35(5):e69-
Objective:
Ovarian clear cell carcinoma (OCCC) is associated with chemoresistance. Limited data exists regarding the efficacy of targeted therapies such as immune checkpoint inhibitors (ICI) and bevacizumab, and the role of secondary cytoreductive surgery (SCS).
Methods:
We retrospectively analyzed genomic features and treatment outcomes of 172 OCCC patients treated at our institution from January 2000 to May 2022. Next-generation sequencing (NGS) was performed where sufficient archival tissue was available.
Results:
64.0% of patients were diagnosed at an early stage, and 36.0% at an advanced stage.Patients with advanced/relapsed OCCC who received platinum-based chemotherapy plus bevacizumab followed by maintenance bevacizumab had a median first-line progressionfree survival (PFS) of 12.2 months, compared with 9.3 months for chemotherapy alone (hazard ratio=0.69; 95% confidence interval [CI]=0.33, 1.45). In 27 patients who received an ICI, the overall response rate was 18.5% and median duration of response was 7.4 months (95% CI=6.5, 8.3). In 17 carefully selected patients with fewer than 3 sites of relapse, median PFS was 35 months (95% CI=0, 73.5) and median overall survival was 96.8 months (95% CI=44.6, 149.0) after SCS. NGS on 58 tumors revealed common mutations in ARID1A (48.3%), PIK3CA (46.6%), and KRAS (20.7%). Pathogenic alterations in PIK3CA, FGFR2, and NBN were associated with worse survival outcomes. Median tumor mutational burden was 3.78 (range, 0–16). All 26 patients with available loss of heterozygosity (LOH) scores had LOH <16%.
Conclusion
Our study demonstrates encouraging outcomes with bevacizumab and ICI, and SCS in select relapsed OCCC patients. Prospective trials are warranted.
6.Comprehensive characterization of genomic features and clinical outcomes following targeted therapy and secondary cytoreductive surgery in OCCC: a single center experience
Silvana Talisa WIJAYA ; Natalie YL NGOI ; Jerold WZ LOH ; Tuan Zea TAN ; Diana LIM ; Irfan Sagir KHAN ; Yee Liang THIAN ; Alexa LAI ; Bertrand WL ANG ; Pearl TONG ; Joseph NG ; Jeffrey JH LOW ; Arunachalam ILANCHERAN ; Siew Eng LIM ; Yi Wan LIM ; David SP TAN
Journal of Gynecologic Oncology 2024;35(5):e69-
Objective:
Ovarian clear cell carcinoma (OCCC) is associated with chemoresistance. Limited data exists regarding the efficacy of targeted therapies such as immune checkpoint inhibitors (ICI) and bevacizumab, and the role of secondary cytoreductive surgery (SCS).
Methods:
We retrospectively analyzed genomic features and treatment outcomes of 172 OCCC patients treated at our institution from January 2000 to May 2022. Next-generation sequencing (NGS) was performed where sufficient archival tissue was available.
Results:
64.0% of patients were diagnosed at an early stage, and 36.0% at an advanced stage.Patients with advanced/relapsed OCCC who received platinum-based chemotherapy plus bevacizumab followed by maintenance bevacizumab had a median first-line progressionfree survival (PFS) of 12.2 months, compared with 9.3 months for chemotherapy alone (hazard ratio=0.69; 95% confidence interval [CI]=0.33, 1.45). In 27 patients who received an ICI, the overall response rate was 18.5% and median duration of response was 7.4 months (95% CI=6.5, 8.3). In 17 carefully selected patients with fewer than 3 sites of relapse, median PFS was 35 months (95% CI=0, 73.5) and median overall survival was 96.8 months (95% CI=44.6, 149.0) after SCS. NGS on 58 tumors revealed common mutations in ARID1A (48.3%), PIK3CA (46.6%), and KRAS (20.7%). Pathogenic alterations in PIK3CA, FGFR2, and NBN were associated with worse survival outcomes. Median tumor mutational burden was 3.78 (range, 0–16). All 26 patients with available loss of heterozygosity (LOH) scores had LOH <16%.
Conclusion
Our study demonstrates encouraging outcomes with bevacizumab and ICI, and SCS in select relapsed OCCC patients. Prospective trials are warranted.
7.Comprehensive characterization of genomic features and clinical outcomes following targeted therapy and secondary cytoreductive surgery in OCCC: a single center experience
Silvana Talisa WIJAYA ; Natalie YL NGOI ; Jerold WZ LOH ; Tuan Zea TAN ; Diana LIM ; Irfan Sagir KHAN ; Yee Liang THIAN ; Alexa LAI ; Bertrand WL ANG ; Pearl TONG ; Joseph NG ; Jeffrey JH LOW ; Arunachalam ILANCHERAN ; Siew Eng LIM ; Yi Wan LIM ; David SP TAN
Journal of Gynecologic Oncology 2024;35(5):e69-
Objective:
Ovarian clear cell carcinoma (OCCC) is associated with chemoresistance. Limited data exists regarding the efficacy of targeted therapies such as immune checkpoint inhibitors (ICI) and bevacizumab, and the role of secondary cytoreductive surgery (SCS).
Methods:
We retrospectively analyzed genomic features and treatment outcomes of 172 OCCC patients treated at our institution from January 2000 to May 2022. Next-generation sequencing (NGS) was performed where sufficient archival tissue was available.
Results:
64.0% of patients were diagnosed at an early stage, and 36.0% at an advanced stage.Patients with advanced/relapsed OCCC who received platinum-based chemotherapy plus bevacizumab followed by maintenance bevacizumab had a median first-line progressionfree survival (PFS) of 12.2 months, compared with 9.3 months for chemotherapy alone (hazard ratio=0.69; 95% confidence interval [CI]=0.33, 1.45). In 27 patients who received an ICI, the overall response rate was 18.5% and median duration of response was 7.4 months (95% CI=6.5, 8.3). In 17 carefully selected patients with fewer than 3 sites of relapse, median PFS was 35 months (95% CI=0, 73.5) and median overall survival was 96.8 months (95% CI=44.6, 149.0) after SCS. NGS on 58 tumors revealed common mutations in ARID1A (48.3%), PIK3CA (46.6%), and KRAS (20.7%). Pathogenic alterations in PIK3CA, FGFR2, and NBN were associated with worse survival outcomes. Median tumor mutational burden was 3.78 (range, 0–16). All 26 patients with available loss of heterozygosity (LOH) scores had LOH <16%.
Conclusion
Our study demonstrates encouraging outcomes with bevacizumab and ICI, and SCS in select relapsed OCCC patients. Prospective trials are warranted.
8.Prevalence and Types of Mucocutaneous Disorders, Their Correlation to CD4 Count and Their Impact on Quality of Life in Adults with HIV Infection
Yee Ting Lim ; Kwee Eng Tey ; Siew Eng Choon
Malaysian Journal of Dermatology 2021;46(June 2021):11-20
Background:
Data on prevalence and type of mucocutaneous diseases in HIV-positive patients and their impact on
quality of life (QoL) are sparse. We aim to determine prevalence and type of mucocutaneous disorders,
their correlation to CD4+
counts and impact on QoL for adults with HIV, using the Dermatology Life
Quality Index (DLQI).
Methods:
A cross-sectional study of HIV-infected adults seen in HIV and Dermatology Clinic.
Results:
The majority (90%) of 174 participants recruited was male. Median age at diagnosis of HIV infection
was 29 years (IQR 10). Mucocutaneous disorders were present in 90.2%, out of which 58.6% had
two or more mucocutaneous disorders. Mean CD4+ count was significantly lower in patients with,
compared to those without mucocutaneous disorders (363 vs 548 cells/µL; p=0.030). Infections
accounted for 67.2% of all mucocutaneous disorders seen, followed by inflammatory dermatoses
(51.7%), cutaneous adverse drug reactions (17.8%) and neoplasm (2.3%). The five most frequent
manifestations were eczema (22.4%), anogenital warts (21.2%), candidiasis (16.7%), dermatophytosis (15.5%) and secondary syphilis (12.0%). Oral candidiasis, pruritic papular eruption, drug-induced maculopapular eruption and drug rash with eosinophilia and systemic symptoms were significantly more prevalent in patients with CD4+ counts <200 cells/µL but anogenital warts were more prevalent in patients with CD4+ counts ≥200 cells/µL. The mean DLQI score was 8.39 (SD ± 6.83). QoL was severely impaired (DLQI >10) in 34.4%.
Conclusion
Mucocutaneous disorders were common in HIV patients causing significant impairment in quality
of life. Prevalence co-related with low CD4+
counts. Adequate management of HIV may reduce the
prevalence of mucocutaneous disorders and improve QoL.
HIV Infections
;
Mucocutaneous Lymph Node Syndrome
9.Mental Health of House Officers during COVID-19 Pandemic in Malaysia
Lim Yee Siew ; Siddique Abu Nowajish ; Zobaidul Amin ; Umajeyam Anbarasan ; Umajeyam Lim Kean Ghee ; John Pinto
ASEAN Journal of Psychiatry 2022;23(no. 4):1-12
Introduction:
The Covid-19 pandemic most certainly impacted the mental health of healthcare professionals in Malaysia.
Aim:
The aim of our research is to assess the mental health of house officers in Malaysia during the COVID-19 pandemic and to compare this with the pre-pandemic times.
Method:
122 house officers from 28 hospitals in Malaysia were recruited into the study and completed an online questionnaire of their demographics, including the Depression, Anxiety and Stress Scale 21 items (DASS-21), Satisfaction with Life Scale and Brief Resilience Scale.
Results:
Results showed that depression (36.1%), anxiety (33.7%) and stress (23.8%) were all prevalent among house officers with depression being the most prevalent among the three. Majority of the house officers were slightly satisfied with life (30.3%) and most of them had normal resilience (71.3%).
Discussion:
We compared our study with 5 other studies from 2010 to 2017 and found similar prevalence in depression, anxiety and stress except for the study in 2017 which showed overall prevalence in depression, anxiety and stress. 8.2% of our subjects recorded extremely severe depression, which is almost twice as much as the two studies we have for comparison.
Conclusion
Housemanship training in Malaysia is indeed a stressful period for junior doctors especially in times of the COVID-19 pandemic. More support systems should be made.