1.Anticoagulation use and predictors of stroke, bleeding and mortality in multi-ethnic Asian patients with atrial fibrillation: A single centre experience
Pow Li Chia ; Xuhiu Teoh ; Jonathan Cheng Ming Hua ; Ming Er Ching ; David Chee Guan Foo
The Medical Journal of Malaysia 2016;71(5):256-258
Introduction: Atrial fibrillation (AF) is the most common
cardiac arrhythmia in singapore. We describe a cohort of
multi-ethnic Asian patients with AF, with the aim to evaluate
anticoagulation use and to identify factors predictive of
stroke, bleeding and all-cause mortality.
Materials and Methods: this was a single centre,
retrospective cohort study. All patients with an admission
diagnosis of AF between 1 January 2000 and 31 December
2010 were identified. Of these patients, those who had
follow-up data up to 31 December 2012 were included in the
study.
results: there were 1095 eligible patients. the mean age
was 67±14 years, mean cHADs2 score was 2±1 and mean
HAs-bLED score 2±1. Of the 1095 patients, 657 (62.0%) had
a cHADs2 score ≥ 2 but only 215 (32.7%) were eventually
prescribed warfarin. Patients not on warfarin were older
(p<0.0001) and were more likely females (p<0.0001). Among
patients not on warfarin, 52% had HAs-bLED score ≤3.
Multivariate analysis revealed that warfarin use and high
HAs-bLED score were associated with increased bleeding
risk. Age, Indian ethnicity and cHADs2 score were
predictive of ischemic stroke. All-cause mortality was
significantly related to age, presence of heart failure and
HAs-bLED score.
conclusions: Anticoagulation management of AF patients
remains inadequate. Objective assessment of bleeding risks
should be performed before withholding anticoagulation.
2.In vitro growth of Ganoderma boninense isolates on novel palm extract medium and virulence on oil palm (Elaeis guineensis) seedlings
Siang Ming Kok ; Yit Kheng Goh ; Hun Jiat Tung ; Kah Joo Goh ; Wei Chee Wong ; You Keng Goh
Malaysian Journal of Microbiology 2013;9(1):33-42
Aims: Basal stem rot (BSR) disease caused by Ganoderma pathogenic fungi, especially Ganoderma boninense is
thriving rapidly in both areas with coastal and inland soils. The objectives of this study were to isolate and characterize Ganoderma isolates collected from various locations in Peninsular Malaysia through the comparison of their growth rate in vitroly on conventional and novel palm extract media, and to determine the degree of virulence caused by the isolates in oil palm seedlings.
Methodology and results: In this study, 12 Ganoderma isolates were collected from infected oil palm trees, from
various locations – Johor, Negeri Sembilan, Kedah, Perak, Pahang, and Kelantan, in Malaysia in year 2011. Twelve
Ganoderma isolates were identified using molecular method with primer set that targeted at small-subunit 18S rDNA
fragment, and characterized by determining the in vitro growth rate, and degree of virulence in 2-month-old oil palm seedlings in the nursery using both disease incidence (DI) and disease severity index (DSI) as the measurements to quantify the infection. All the Ganoderma isolates were identified as G. boninense and sequences of the respective
isolates were deposited in GenBank. In general, all the isolates proliferated faster on oil palm extract medium (OPEM) compared to malt extract agar (MEA). Twelve G. boninense isolates were observed to illustrate different degree of virulence ranging from highly pathogenic to least pathogenic.
Conclusion, significance and impact of study: Cultures of 12 G. boninense isolates were observed to show faster
growth rate (P < 0.014) on OPEM under in vitro conditions compared to conventional MEA medium, except Bt Lintang
G10 and GBA G12 isolates. OPEM medium could provide a better alternative for maintaining and culturing Ganoderma
strains. In the current study, both DI and DSI were highly correlated. However, there were low linear relationships (R2 < 0.423) between mycelia growth rate (on MEA and OPEM) and degree of virulence (DI and DSI) at 12-, 14- and 16-
weeks after treatments among the G. boninense isolates tested. Furthermore, different degrees of virulence in twelve separate Ganoderma isolates were reported. Therefore, it is crucial to incorporate more than one isolate into any researches on screening for Ganoderma resistance or tolerance planting materials, searching for potential biological control agents, and studying bitrophic or tri-trophic interactions. In addition, this study was aimed to isolate G. boninense
strains with various virulence levels for future studies.
3.An unusual appearance of renal epithelioid angiomyolipoma.
Chee-Wai MAK ; Jin Ming CHANG ; Wen Sheng TZENG ; Steve K HUAN
Singapore medical journal 2012;53(10):e204-7
Epithelioid angiomyolipoma is a recently described rare variant of renal angiomyolipoma. It can occur in patients with or without tuberous sclerosis. We report the imaging findings of a case of epithelioid angiomyolipoma that showed the presence of fatty tissue undifferentiated from the typical angiomyolipoma at the beginning. After partial nephrectomy, tumour recurrence occurred two years later, presenting as completely solid tumours with no adipose tissue, and with invasion into the psoas muscle and left adrenal gland. Differentiation of this tumour from renal cell carcinoma is difficult. Both the radiologist and surgeon should be aware of the existence of this tumour and its potentially malignant behaviour.
Aged
;
Angiomyolipoma
;
diagnosis
;
pathology
;
surgery
;
Carcinoma, Renal Cell
;
diagnosis
;
Diagnosis, Differential
;
Female
;
Humans
;
Kidney
;
pathology
;
Kidney Neoplasms
;
diagnosis
;
pathology
;
surgery
;
Neoplasm Recurrence, Local
;
pathology
;
Tomography, X-Ray Computed
4.Lack of meaningful genotype-phenotype association in SCN1A-related infantile-onset epileptic encephalopathies
Siti Aishah Abdul Wahab ; Yusnita Yakob ; Teik-Beng Khoo ; Sangita Dharshini Terumalay ; Vigneswari Ganesan ; Chee-Ming The ; Nor Azni bin Yahaya ; Hock-Sin Heng ; Manonmani Vaithialingam ; Sau-Wei Wong
Neurology Asia 2017;22(2):99-111
Background & Objective: SCN1A gene which encodes for sodium channel alpha 1 subunit has been
found to be the most common mutated gene in patients with epilepsy. This study aims to characterize the
SCN1A mutations as well as to describe genotype and phenotype association in children with SCN1Arelated
infantile-onset epileptic encephalopathies in Malaysia. Methods: Children with infantile-onset
epileptic encephalopathy mostly suspected to have Dravet syndrome who had mutational analysis for
SCN1A gene from hospitals all over Malaysia were included in the study. Their epilepsy syndrome
diagnosis was classified into severe myoclonic epilepsy in infancy and its variants. Polymerase chain
reaction and bidirectional sequencing were used to identify SCN1A mutations. Results: A total of 38
children with heterozygous mutations were analysed, 22 (57.9%) of which were novel mutations.
Truncated mutations were the most common mutation type (19, 50%). Other mutation types were
missense mutations (14, 36.8%), splice site mutations (4, 10.5%) and in-frame deletion (1, 2.6%). The
mean age of seizure onset was 4.7 months. Seizure following vaccination was observed in 26.3% of
the children. All of them had drug resistant epilepsy. There was no significant association between
the type of mutation with the syndromic diagnosis, age of seizure onset, tendency of the seizures to
cluster or having status epilepticus, mean age when developmental delay was observed and response
to various antiepileptic drugs.
Conclusion: This study expands the spectrum of SCN1A mutations and proves the importance of
SCN1A gene testing in diagnosing infantile-onset epileptic encephalopathies patients. Although, our
study does not support any clinically meaningful genotype-phenotype association for SCN1A-related
infantile-onset epileptic encephalopathies, the clinical characteristics of our cohort are similar to those
that have been described in previous studies.
5.Neutrophilic Dermatoses as a Continuous Spectrum: An Illustrative Case.
Pei Ming YEO ; Ki Wei TAN ; Regina Sp LIM ; Sim Chee SENG ; Jeannie Pl ONG ; Ratna RAJARATNAM
Annals of the Academy of Medicine, Singapore 2016;45(12):569-571
Facial Dermatoses
;
diagnosis
;
pathology
;
Humans
;
Male
;
Pyoderma Gangrenosum
;
diagnosis
;
pathology
;
Sweet Syndrome
;
diagnosis
;
pathology
;
Young Adult
6.Aging Male Symptoms Scale (Ams) For Health-Related Quality Of Life In Aging Men: Translation And Adaptation In Malay
Hui Meng Tan ; Wah Yun Low ; Seng Fah Tong ; Jamaiyah Haniff ; Geeta Appannah ; Verna K.M. Lee ; Ee Ming Khoo ; Chirk Jenn Ng ; Christopher Chee Kong Ho
Malaysian Journal of Public Health Medicine 2015;15(2):17-23
The Aging Male Symptoms Scale (AMS) measures health-related quality of life in aging men. The objective of this paper is to describe the translation and validation of the AMS into Bahasa Melayu (BM). The original English version of the AMS was translated into BM by 2 translators to produce BM1 and BM2, and subsequently harmonized to produce BM3. Two other independent translators, blinded to the English version, back-translated BM3 to yield E2 and E3. All versions (BM1, BM2, BM3, E2, E3) were compared with the English version. The BM pre-final version was produced, and pre-tested in 8 participants. Proportion Agreement, Weighted Kappa, Spearman Rank Correlation Coefficient, and verbatim responses were used. The English and the BM versions showed excellent equivalence (weighted Kappa and Spearman Rank Coefficients, ranged from 0.72 to 1.00, and Proportion Agreement values ranged from 75.0% to 100%). In conclusion, the BM version of the AMS was successfully translated and adapted.
7.The Effect of Body Mass Index on Long-Term Patient-Reported Outcome Scores after Anterior Cervical Discectomy and Fusion in an Asian Population: A 2-Year Study
Shao Jin TEO ; William YEO ; Marcus Zhixing LING ; Poh Ling FONG ; Chang Ming GUO ; John Li Tat CHEN ; Reuben Chee Cheong SOH
Asian Spine Journal 2021;15(4):512-522
Retrospective cohort study. This study aims to analyze the relationship between body mass index (BMI) subjective patient-reported outcomes (PRO) after 1- and 2-level anterior cervical discectomy and fusion (ACDF). The prevalence of cervical spondylosis and ACDF in expected to continue rising among the aging population of Asia. Moreover, the prevalence of obesity is also increasing. However, limited information is available about the mechanism by which BMI affects PRO after ACDF. Total 878 patients underwent ACDF between 2000 and 2015. After excluding patients with previous cervical instrumentation, >2 levels fused, missing BMI measurement, or neoplastic/trauma indication for surgery, 535 patients were included. The PRO measures of the Neck Disability Index, Numerical Pain Rating Scale (NPRS) for Neck Pain, NPRS for Limb Pain, American Academy of Orthopaedic Surgeons–Neurogenic Symptom Score, and Japanese Orthopaedic Association myelopathy score were used. Patients were grouped based on their preoperative BMI, as per the World Health Organization guidelines for Asian populations. PRO scores were collected preoperatively, at 6 months postoperatively, and 2 years postoperatively. A generalized linear model was used to analyze the relationship of BMI category with the individual score, accounting for several factors that are likely to affect the outcomes. Total 19 (3.4%) were underweight, 155 (28.0%) were normal weight, 112 (20.3%) were overweight, and 267 (48.3%) were obese. Patients across all BMI categories experienced significant and similar improvements in their postoperative PRO scores. There were no significant differences in the preoperative, 6-month postoperative, and 2-year postoperative PRO scores of the groups. Rate of reoperation was highest in patients with grade II obesity at 8.07%; however, the difference was not statistically significant. Irrespective of the BMI, all patients exhibited similar satisfactory outcomes following ACDF. The results support surgery in all subgroups of patients with symptomatic nerve compression in the cervical spine.
8.The Effect of Body Mass Index on Long-Term Patient-Reported Outcome Scores after Anterior Cervical Discectomy and Fusion in an Asian Population: A 2-Year Study
Shao Jin TEO ; William YEO ; Marcus Zhixing LING ; Poh Ling FONG ; Chang Ming GUO ; John Li Tat CHEN ; Reuben Chee Cheong SOH
Asian Spine Journal 2021;15(4):512-522
Retrospective cohort study. This study aims to analyze the relationship between body mass index (BMI) subjective patient-reported outcomes (PRO) after 1- and 2-level anterior cervical discectomy and fusion (ACDF). The prevalence of cervical spondylosis and ACDF in expected to continue rising among the aging population of Asia. Moreover, the prevalence of obesity is also increasing. However, limited information is available about the mechanism by which BMI affects PRO after ACDF. Total 878 patients underwent ACDF between 2000 and 2015. After excluding patients with previous cervical instrumentation, >2 levels fused, missing BMI measurement, or neoplastic/trauma indication for surgery, 535 patients were included. The PRO measures of the Neck Disability Index, Numerical Pain Rating Scale (NPRS) for Neck Pain, NPRS for Limb Pain, American Academy of Orthopaedic Surgeons–Neurogenic Symptom Score, and Japanese Orthopaedic Association myelopathy score were used. Patients were grouped based on their preoperative BMI, as per the World Health Organization guidelines for Asian populations. PRO scores were collected preoperatively, at 6 months postoperatively, and 2 years postoperatively. A generalized linear model was used to analyze the relationship of BMI category with the individual score, accounting for several factors that are likely to affect the outcomes. Total 19 (3.4%) were underweight, 155 (28.0%) were normal weight, 112 (20.3%) were overweight, and 267 (48.3%) were obese. Patients across all BMI categories experienced significant and similar improvements in their postoperative PRO scores. There were no significant differences in the preoperative, 6-month postoperative, and 2-year postoperative PRO scores of the groups. Rate of reoperation was highest in patients with grade II obesity at 8.07%; however, the difference was not statistically significant. Irrespective of the BMI, all patients exhibited similar satisfactory outcomes following ACDF. The results support surgery in all subgroups of patients with symptomatic nerve compression in the cervical spine.