Browse publications by year: 2020

  1. Md Idris N, Chiam YK, Varathan KD, Wan Ahmad WA, Chee KH, Liew YM
    Med Biol Eng Comput, 2020 Dec;58(12):3123-3140.
    PMID: 33155096 DOI: 10.1007/s11517-020-02268-9
    Coronary artery disease (CAD) is an important cause of mortality across the globe. Early risk prediction of CAD would be able to reduce the death rate by allowing early and targeted treatments. In healthcare, some studies applied data mining techniques and machine learning algorithms on the risk prediction of CAD using patient data collected by hospitals and medical centers. However, most of these studies used all the attributes in the datasets which might reduce the performance of prediction models due to data redundancy. The objective of this research is to identify significant features to build models for predicting the risk level of patients with CAD. In this research, significant features were selected using three methods (i.e., Chi-squared test, recursive feature elimination, and Embedded Decision Tree). Synthetic Minority Over-sampling Technique (SMOTE) oversampling technique was implemented to address the imbalanced dataset issue. The prediction models were built based on the identified significant features and eight machine learning algorithms, utilizing Acute Coronary Syndrome (ACS) datasets provided by National Cardiovascular Disease Database (NCVD) Malaysia. The prediction models were evaluated and compared using six performance evaluation metrics, and the top-performing models have achieved AUC more than 90%. Graphical abstract.
    MeSH terms: Machine Learning; Algorithms; Humans; Databases, Factual; Data Mining
  2. Pui Kei C, Mohd Nordin NA, Abdul Aziz AF
    Medicine (Baltimore), 2020 Nov 20;99(47):e23296.
    PMID: 33217861 DOI: 10.1097/MD.0000000000023296
    INTRODUCTION: Stroke survivors are commonly at risk of functional decline following discharge from rehabilitation, which increase their susceptibility to falls, dependency in activities of daily living and emotional disturbances. To combat these, continued therapy is important. Home-based therapy (HBT) has been shown to be useful in maintaining functional performance and quality of life of chronic stroke survivors. However, evidence on its effectiveness remains limited, while no studies are available to date which report the benefit of HBT on stroke survivors self-efficacy and emotional status. Therefore, this study aims to assess the effectiveness of post-discharge HBT in comparison to usual practice on functional outcome (mobility and gait speed), self-efficacy and anxiety level among stroke survivors.

    METHODS: This is an assessor-blinded randomized control trial comparing 2 types of intervention which are HBT (experimental group) and usual practice (UP) (control group). Based on sample size calculation using GPower, a total number of 42 participants will be recruited and allocated into either the HBT or the UP group. Participants in HBT group will receive a set of structured exercise therapy consisting of progressive strengthening, balance and task-related exercises. While participants in UP group will receive a usual "intervention" practised by rehabilitation professional prior to discharging stroke patients from their care. Both groups are advised to perform the given interventions for 3 times per week for 12 weeks under the supervision of their caregiver. Outcomes of interventions will be measured using timed up and go test (for mobility), ten-meter walk test (for gait speed), stroke self-efficacy questionnaire (for self-efficacy) and hospital anxiety and depression scale (for anxiety level). All data will be analyzed using descriptive and inferential statistics.

    DISCUSSION: This study will provide the information on the effectiveness of HBT in comparison to UP among stroke population who are discharged from rehabilitation. Findings from the study will enable rehabilitation professionals to design effective discharge care plan for stroke survivors in combating functional decline when no longer receiving hospital-based therapy.

    TRIAL REGISTRATION: Australian New Zealand Clinical Trials Registry, ACTRN12619001182189 (last updated 22/11/2019).

    MeSH terms: Gait; Home Care Services*; Humans; Movement; Patient Discharge; Randomized Controlled Trials as Topic/methods*; Single-Blind Method; Treatment Outcome; Recovery of Function; Self Efficacy*; Stroke Rehabilitation/psychology*
  3. Basri L, Nor RM, Salleh A, Md Yasin IS, Saad MZ, Abd Rahaman NY, et al.
    Animals (Basel), 2020 Nov 18;10(11).
    PMID: 33217902 DOI: 10.3390/ani10112141
    A high death rate among red hybrid tilapias was observed in a farm in Selangor, Malaysia, in January 2020. The affected fish appeared lethargic, isolated from schooling group, showed loss of appetite, red and haemorrhagic skin, exophthalmia and enlarged gall bladders. Histopathological assessment revealed deformation of kidney tubules, and severe congestion with infiltrations of inflammatory cells in the brains and kidneys. Syncytial cells and intracytoplasmic inclusion bodies were occasionally observed in the liver and brain sections. Tilapia Lake Virus (TiLV), Aeromonas hydrophila and Streptococcus agalactiae were identified in the affected fish, either through isolation or through PCR and sequencing analysis. The phylogenetic tree analysis revealed that the TiLV strain in this study was closely related to the previously reported Malaysian strain that was isolated in 2019. On the other hand, A. hydrophila and S. agalactiae were closer to Algerian and Brazilian strains, respectively. The multiple antibiotic resistance index for A. hydrophila and S. agalactiae was 0.50 and 0.25, respectively. Co-infections of virus and bacteria in cultured tilapia is a new threat for the tilapia industry.
  4. Pui Ping C, Akhtar MN, Israf DA, Perimal EK, Sulaiman MR
    Molecules, 2020 Nov 18;25(22).
    PMID: 33217904 DOI: 10.3390/molecules25225385
    The perception of pain caused by inflammation serves as a warning sign to avoid further injury. The generation and transmission of pain impulses involves various pathways and receptors. Cardamonin isolated from Boesenbergia rotunda (L.) Mansf. has been reported to exert antinociceptive effects in thermal and mechanical pain models; however, the precise mechanism has yet to be examined. The present study investigated the possible mechanisms involved in the antinociceptive activity of cardamonin on protein kinase C, N-methyl-d-aspartate (NMDA) and non-NMDA glutamate receptors, l-arginine/cyclic guanosine monophosphate (cGMP) mechanism, as well as the ATP-sensitive potassium (K+) channel. Cardamonin was administered to the animals intra-peritoneally. Present findings showed that cardamonin significantly inhibited pain elicited by intraplantar injection of phorbol 12-myristate 13-acetate (PMA, a protein kinase C activator) with calculated mean ED50 of 2.0 mg/kg (0.9-4.5 mg/kg). The study presented that pre-treatment with MK-801 (NMDA receptor antagonist) and NBQX (non-NMDA receptor antagonist) significantly modulates the antinociceptive activity of cardamonin at 3 mg/kg when tested with glutamate-induced paw licking test. Pre-treatment with l-arginine (a nitric oxide precursor), ODQ (selective inhibitor of soluble guanylyl cyclase) and glibenclamide (ATP-sensitive K+ channel inhibitor) significantly enhanced the antinociception produced by cardamonin. In conclusion, the present findings showed that the antinociceptive activity of cardamonin might involve the modulation of PKC activity, NMDA and non-NMDA glutamate receptors, l-arginine/nitric oxide/cGMP pathway and ATP-sensitive K+ channel.
    MeSH terms: Animals; Glyburide; Cyclic GMP; Guanosine Monophosphate; Myristates; Nitric Oxide; Potassium; Protein Kinase C; Tetradecanoylphorbol Acetate; Receptors, N-Methyl-D-Aspartate; N-Methylaspartate; Dizocilpine Maleate; Glutamic Acid; Soluble Guanylyl Cyclase
  5. Ng SY, Phan CS, Ishii T, Kamada T, Hamada T, Vairappan CS
    Molecules, 2020 Nov 18;25(22).
    PMID: 33217924 DOI: 10.3390/molecules25225386
    Members of the marine soft coral genus Xenia are rich in a diversity of diterpenes. A total of 199 terpenes consisting of 14 sesquiterpenes, 180 diterpenes, and 5 steroids have been reported to date. Xenicane diterpenes were reported to be the most common chemical skeleton biosynthesized by members of this genus. Most of the literature reported the chemical diversity of Xenia collected from the coral reefs in the South China Sea and the coastal waters of Taiwan. Although there was a brief review on the terpenoids of Xenia in 2015, the present review is a comprehensive overview of the structural diversity of secondary metabolites isolated from soft coral genus Xenia and their potent biological activity as reported between 1977 to 2019.
    MeSH terms: Animals; China; Diterpenes; Sesquiterpenes; Steroids; Taiwan; Terpenes; Anthozoa; Coral Reefs
  6. Choo TF, Mohd Salleh MA, Kok KY, Matori KA, Abdul Rashid S
    Materials (Basel), 2020 Nov 18;13(22).
    PMID: 33218206 DOI: 10.3390/ma13225218
    Grog is an additive material that plays important roles in ceramic making. It improves the fabrication process of green bodies as well as the physical properties of fired bodies. Few low-cost materials and wastes have found their application as grog in recent years, thus encouraging the replacement of commercial grogs with cost-saving materials. Coal fly ash, a combustion waste produced by coal-fired power plant, has the potential to be converted into grog owing to its small particle sizes and high content of silica and alumina. In this study, grog was derived from coal fly ash and mixed with kaolin clay to produce ceramics. Effects of the grog addition on the resultant ceramics were investigated. It was found that, to a certain extent, the grog addition reduced the firing shrinkage and increased the total porosity of the ceramics. The dimensional stability of the ceramics at a firing temperature of 1200 °C was also not noticeably affected by the grog. However, the grog addition in general had negative effects on the biaxial flexural strength and refractoriness of the ceramics.
    MeSH terms: Aluminum Oxide; Ceramics; Coal; Kaolin; Particle Size; Power Plants; Silicon Dioxide; Temperature; Porosity; Physical Phenomena; Coal Ash
  7. Miptah HN, Ramli AS, Mohamad M, Hashim H, Tharek Z
    BMC Fam Pract, 2020 11 20;21(1):238.
    PMID: 33218301 DOI: 10.1186/s12875-020-01306-7
    BACKGROUND: Non-alcoholic fatty liver disease (NAFLD) is an emerging novel cardiovascular disease (CVD) risk factor. It's prevalence is increasing globally. However, there is paucity in the evidence showing the association between NAFLD and CVD risk in primary care setting. Therefore, the objectives of this study were to determine the prevalence and factors associated with NAFLD among patients with ≥1 risk factor for NAFLD or CVD attending primary care clinics.

    METHODOLOGY: A cross sectional study was conducted in two clinics at a university primary care centre. Patients aged ≥18 years with ≥1 risk factor for NAFLD or CVD were recruited. Participants with history of established liver disease or chronic alcohol use were excluded. Socio-demographics, clinical related data, anthropometric measurements and blood investigation results were recorded in a proforma. Diagnosis of NAFLD was made using abdominal ultrasound. The 10-year CVD risk was calculated using the general Framingham Risk Score (FRS). Multiple logistic regression (MLogR) was performed to identify independent factors associated with NAFLD.

    RESULTS: A total of 263 participants were recruited. The mean age was 52.3 ± 14.7 years old. Male and female were equally distributed. Majority of the participants were Malays (79.8%). The overall prevalence of NAFLD was 54.4% (95%CI 48,60%). Participants in the high FRS category have higher prevalence of NAFLD (65.5%), followed by those in the moderate category (55.4%) and the low category (46.3%), p = 0.025. From MLogR, independent factors associated with NAFLD were being employed (OR = 2.44, 95%CI 1.26,4.70, p = 0.008), obesity with BMI ≥27.5 (OR = 2.89, 95%CI 1.21,6.91, p = 0.017), elevated fasting glucose ≥5.6 mmol/L (OR = 2.79, 95%CI 1.44,5.43, p = 0.002), ALT ≥34 U/L (OR = 3.70, 95%CI 1.85,7.44, p 

    MeSH terms: Cross-Sectional Studies; Female; Humans; Male; Middle Aged; Primary Health Care; Risk Factors; Prevalence
  8. Song X, Hu Z, Shang L, Leaw CP, Lim PT, Tang YZ
    Harmful Algae, 2020 11;99:101926.
    PMID: 33218448 DOI: 10.1016/j.hal.2020.101926
    Multiple dinoflagellate species from the genus Karlodinium have been well known to form massive and toxic blooms that consequently cause fish kills in many coastal waters around the world. Karlodinium australe is a mixotrophic and potentially ichthyotoxic species associated with fish kills. Here, we investigated phagotrophy of K. australe (isolate KaJb05) established from a bloom event in the West Johor Strait, Malaysia, using several prey species (phytoplankton, zooplankton, and larval fish). The results showed that K. australe ingested relatively small prey cells of co-occurring microalgae by direct engulfment, while it fed on larger prey cells of microalgae by tube feeding. The results of animal exposure bioassays using rotifer (Brachionus plicatilis), brine shrimp (Artemia salina), and larval fish (Oryzias melastigma) demonstrated that phagotrophy (in terms of the trophic mode of the dinoflagellate), or micropredation (in terms of the mechanism of lethal effects on prey), played a more important role than the toxicity did in causing the lethal effects of K. australe on these aquatic animals under low cell densities of K. australe, while the mortalities of animals observed in the exposure to cell lysates of K. australe were solely caused by the toxicity. A comparison of the lethal effects between K. australe and K. veneficum revealed that the lethal effect of K. australe on rotifers was much stronger than that of K. veneficum at all cell densities applied in the experiments and the more "aggressive" micropredation of K. australe is suggested to explain the difference in lethal effect between K. austale and K. veneficum. Our results may explain why K. australe exhibited fish killings during moderate blooms at cell densities < 2.34 × 106 cells L-1, whereas K. veneficum was observed to cause massive fish kills only if the cell density was above 107 cells L-1. We believe these findings provide new insights into the ecological consequences of phagotrophy exhibited in some mixotrophic and harmful algae such as species of Karlodinium and of HAB events in general.
    MeSH terms: Animals; Biological Assay; Dinoflagellida*; Exotoxins*; Laboratories; Malaysia
  9. Mohan V, Paungmali A, Sitilertpisan P, Henry LJ, Omar FA, Azhar FZ
    J Bodyw Mov Ther, 2020 Oct;24(4):196-202.
    PMID: 33218511 DOI: 10.1016/j.jbmt.2020.07.007
    BACKGROUND: Studies have shown the involvement of respiratory characteristics and their relationship with impairments in non-specific low back pain (NS-LBP). The effects of core stability with a combined ball and balloon exercise (CBB) on respiratory variables had not been investigated.

    OBJECTIVE: To evaluate the effectiveness of CBB on respiratory variables among NS-LBP patients.

    STUDY DESIGN: pre- and post-experimental study.

    PARTICIPANTS: Forty participants were assigned to an experimental group (EG) [n = 20] and control group (CG) [n = 20] based on the study criteria.

    INTERVENTIONS: The EG received CBB together with routine physiotherapy and the CG received routine physiotherapy over a period of 8 weeks. Participants were instructed to carry out the exercises for 3 days per week. The training was evaluated once a week and the exercises progressed based on the level of pain.

    OUTCOME MEASURES: Primary outcomes were maximum inspiratory pressure (MIP), maximum expiratory pressure (MEP) and maximum voluntary ventilation (MVV). The secondary outcomes were measured in the numeric rating scale (NRS), total faulty breathing scale (TFBS), cloth tape measure (CTM) and lumbo-pelvic stability.

    RESULTS: The MIP increased significantly among the EG when compared with that in the CG (p > 0.05).The EG showed a significant increase in MVV (p = 0.04) when compared to the CG (p = 0.0001). There was a significant reduction in pain for both groups. The MEP, TFBS, chest expansion and core stability showed no changes in either group.

    CONCLUSION: CBB was effective in improving respiratory variables among NS-LBP patients.

    MeSH terms: Exercise Therapy; Humans; Maximal Voluntary Ventilation; Exercise; Low Back Pain; Physical Therapy Modalities; Control Groups; Maximal Respiratory Pressures
  10. Rampal L, Liew BS, Choolani M, Ganasegeran K, Pramanick A, Vallibhakara SA, et al.
    Med J Malaysia, 2020 11;75(6):613-625.
    PMID: 33219168
    INTRODUCTION: COVID-19 has caused unprecedented public health concerns, triggering an escalated burden to health systems worldwide. The pandemic has altered people's living norms, yet coherently escalating countries' socioeconomic instability. This real-time consensus review aims to describe the epidemiological trends of COVID-19 pandemic across six South-East Asian nations, and countryspecific experiences on pandemic preparedness, responses and interventions.

    METHODS: Consensus-driven approach between authors from the six selected countries was applied. Country specific policy documents, official government media statements, mainstream news portals, global statistics databases and latest published literature available between January-October 2020 were utilised for information retrieval. Situational and epidemiological trend analyses were conducted. Country-specific interventions and challenges were described. Based on evidence appraised, a descriptive framework was considered through a consensus. The authors subsequently outlined the lessons learned, challenges ahead and interventions that needs to be in place to control the pandemic.

    RESULTS: The total number of people infected with COVID-19 between 1 January and 16 November 2020 had reached 48,520 in Malaysia, 58,124 in Singapore, 3,875 in Thailand, 470,648 in Indonesia, 409,574 in Philippines and 70,161 in Myanmar. The total number of people infected with COVID- 19 in the six countries from January to 31 October 2020 were 936,866 cases and the mortality rate was 2.42%. Indonesia had 410,088 cases with a mortality rate of 3.38%, Philippines had 380,729 cases with a mortality rate of 1.90%, Myanmar had 52,706 cases with a mortality rate of 2.34%, Thailand had 3,780 cases with a mortality rate of 1.56%, Malaysia had 31,548 cases with a mortality rate of 0.79%, and Singapore had 58,015 cases with a mortality rate of 0.05% over the 10- month period. Each country response varied depending on its real-time situations based on the number of active cases and economic situation of the country.

    CONCLUSION: The number of COVID-19 cases in these countries waxed and waned over the 10-month period, the number of cases may be coming down in one country, and vice versa in another. Each country, if acting alone, will not be able to control this pandemic. Sharing of information and resources across nations is the key to successful control of the pandemic. There is a need to reflect on how the pandemic affects individuals, families and the community as a whole. There are many people who cannot afford to be isolated from their families and daily wage workers who cannot afford to miss work. Are we as a medical community, only empathising with our patients or are we doing our utmost to uphold them during this time of crisis? Are there any other avenues which can curb the epidemic while reducing its impact on the health and socio-economic condition of the individual, community and the nation?

    MeSH terms: Asia, Southeastern/epidemiology; Humans; Public Health*; Consensus*; Pandemics/statistics & numerical data*
  11. Hasneezah H, Rosliza AM, Salmiah MS, Appanah G
    Med J Malaysia, 2020 11;75(6):626-634.
    PMID: 33219169
    BACKGROUND: Anaemia in pregnancy is considered a public health problem throughout the world. The effects of the existing intervention in ensuring compliance to the subscribed regimen and the impact of nutrition education in enhancing dietary modification during pregnancy in Malaysia have been minimal. This study aims to develop, implement and evaluate the effects of the Health Belief Model educational intervention on haemoglobin level among anaemic pregnant women.

    METHODS: This is a quasi-experimental research with prepost test design with control group involving 81 participants per group from two health clinics in Sepang. The primary outcome was a change in the haemoglobin levels following educational intervention. Secondary outcomes include knowledge on anaemia, Health Belief Model (HBM) constructs, dietary iron intake and compliance towards iron supplementation. The intervention group received a HBMbased education intervention programme.

    RESULTS: The response rate in the intervention and control group were 83.9% and 82.7% respectively. Generalised estimating equations analysis showed that the intervention was effective in improving the mean haemoglobin level (β=0.75, 95%CI=0.52, 0.99, p<0.001), the knowledge score (β=1.42, 95%CI=0.36, 2.49, p=0.009), perceived severity score (β=2.2, 95%CI= 1.02, 3.39, p<0.001) and increased proportion of high compliance level (AOR=4.59, 95%CI=1.58, 13.35, p=0.005).

    CONCLUSION: HBM-based health education programme has proven to be effective in improving the haemoglobin levels, knowledge scores, perceived severity scores and compliance level of participants. The study results emphasized on the effectiveness of such an approach, therefore it is recommended that future educational interventions which aim at increasing preventive healthy behaviours in pregnant women may benefit from the application of this model in primary health care settings.

    MeSH terms: Anemia; Diet; Female; Health Education; Hemoglobins; Humans; Iron; Malaysia; Pregnancy; Primary Health Care; Public Health; Health Behavior; Iron, Dietary; Dietary Supplements; Control Groups; Pregnant Women
  12. Xin Tian C, Baharuddin KA, Shaik Farid AW, Andey R, Ridzuan MI, Siti-Azrin AH
    Med J Malaysia, 2020 11;75(6):635-641.
    PMID: 33219170
    INTRODUCTION: Plasma leakage is a major cause of morbidity and mortality in dengue fever. Few studies have shown the sensitivity of thoracoabdominal ultrasound in detecting plasma leakage in severe dengue, however its sensitivity in the early presentation of dengue fever without warning signs remains unknown. This study is aimed to determine the role of serial ultrasound in order to detect plasma leakage in dengue fever without warning signs.

    METHODS: This prospective cohort study was conducted at Hospital Universiti Sains Malaysia (USM) from 1st October 2016 to 30th November 2017. Serial bedside ultrasound procedures were performed for 83 patients who were diagnosed as having dengue fever without warning signs and were initially treated as outpatients. Ultrasonography evidence of plasma leakage either pleural effusion, thickened gallbladder wall, ascites or pericardial effusion were compared with clinical findings and laboratory parameters for plasma leakage.

    RESULTS: Of the 83 dengue patients, eventually 72.3% had dengue fever with warning signs and 6.0% had severe dengue fever. There were 38 patients who had subclinical plasma leakage at initial presentation, 84.2% and 7.9% of them then progressed to dengue fever with warning signs and severe dengue respectively. There was a minimal agreement between serial bedside ultrasound and haematocrit level in the detection of plasma leakage (observed kappa 0.135).

    CONCLUSIONS: Serial bedside ultrasound is an adjunct procedure to physical examination and may detect plasma leakage earlier compared to haemoconcentration. The early usage of serial ultrasound is of paramount importance in detecting dengue patients who are at risk of progressing to severe dengue.

    MeSH terms: Ascites; Exudates and Transudates; Gallbladder; Hematocrit; Humans; Malaysia; Outpatients; Pericardial Effusion; Physical Examination; Pleural Effusion; Prospective Studies; Ultrasonography; Severe Dengue
  13. Zamli AH, Mustafah NM, Sa'at N, Shaharom S
    Med J Malaysia, 2020 11;75(6):642-648.
    PMID: 33219171
    INTRODUCTION: Neurogenic bladder (NB) is a recognized secondary medical impairment following spinal cord injury (SCI). Ultrasound (US) of the kidneys, ureters and bladder (KUB) has been recommended as a useful, non-invasive surveillance method with good diagnostic sensitivity. This study aims to understand US diagnosed NB complications and identify its associated factors.

    METHODS: We enrolled all patients referred for SCI rehabilitation from 2012 to 2015 that fulfilled our study criteria. Data that were retrospectively reviewed included demographic and clinical characteristic data; and US KUB surveillance studies.

    RESULTS: Out of 136 electronic medical records reviewed, 110 fulfilled the study criteria. The prevalence of NB in our study population was 80.9%. We found 22(20%) of the patients showed evidence of US diagnosed NB complications with the mean detection of 9.61±7.91 months following initial SCI. The reported NB complications were specific morphological changes in the bladder wall 8(36.4%); followed by unilateral/bilateral hydronephrosis 7(31.8%); bladder and/or renal calculi 5(22.7%); and mixed complication 2(9.1%) respectively. Half of the patients with NB complications had urodynamic diagnosis of neurogenic detrusor overactivity with/without evidence of detrusor sphincter dyssynergia. We found co-existing neurogenic bowel, presence of spasticity and mode of bladder management were significantly associated factors with US diagnosed NB complications (p<0.05), while spasticity was its predictor with adjusted Odds Ratio value of 3.93 (1.14, 13.56).

    CONCLUSION: NB is a common secondary medical impairment in our SCI population. A proportion of them had US diagnosed NB complications. Co-existing neurogenic bowel, presence of spasticity and mode of bladder management were its associated factors; while spasticity was its predictor.

    MeSH terms: Ataxia; Urinary Bladder, Neurogenic; Humans; Hydronephrosis; Kidney; Kidney Calculi; Retrospective Studies; Spinal Cord Injuries; Ureter; Urodynamics; Prevalence; Odds Ratio; Urinary Bladder, Overactive; Neurogenic Bowel; Electronic Health Records
  14. Ting SL, Saimon R, Rahman MM, Safii R, Ho SL, John N, et al.
    Med J Malaysia, 2020 11;75(6):649-654.
    PMID: 33219172
    BACKGROUND AND OBJECTIVE: Physical and behavioural problems from extended usage of electronic devices are issues among primary school children. This study is aimed to investigate the prevalence of physical and behavioural complaints arising from the electronic device usage and to identify the potential factors that predicted the complaints.

    METHODS: This was a primary school-based cross-sectional study using multistage cluster sampling, conducted at Bau district in Sarawak, Malaysia in 40 primary schools. A questionnaire was used to collect information of usage pattern in insufficient lighting, timing and position. The physical and behavioural complaints were traced. Data analysis was performed using SPSS version 22. A p-value < 0.05 with 95% CI was considered as statistically significant.

    RESULTS: About 52.8% of the 569 students used digital devices in a bright room, 69.8% in the day time and 54.4% in sitting position. The physical complaints were headache (32.9%), neck, shoulder and back pain (32.9%) followed by by eye strain (31.8%). Regarding behavioural problems, 25.7% of the students had loss of interest in study and outdoor activities (20.7%), skipped meals (19.0%) and arguments/disagreements with parents (17.9%). After logistic regression analysis, the lying position (OR=1.71, 95% CI: 1.096, 2.688) and darkroom lighting (OR=2.323 95% CI: 1.138, 4.744) appeared to be potential predictors of the complaint.

    CONCLUSION: One-quarter of the students studied experienced physical complaints, and one-fifth had behavioural problems associated with the use of electronic devices. Lying position and darkroom lighting are the potential predictors of complaints. Therefore, we suggest that the children should use electronic devices in the sitting position with adequate room lighting.

    MeSH terms: Problem Behavior; Back Pain; Child; Cross-Sectional Studies; Headache; Humans; Lighting; Malaysia; Parents; Surveys and Questionnaires; Schools; Shoulder; Students; Prevalence; Logistic Models
  15. Sulaiman S, Leelavathi M, Norasyikin AW
    Med J Malaysia, 2020 11;75(6):655-659.
    PMID: 33219173
    INTRODUCTION: The rapid increase in Type 2 Diabetes Mellitus (T2DM) among the younger age groups is a growing concern worldwide. Thus, assessing the perception of risk and knowledge among those at risk may provide an opportunity for early intervention, delay or even prevent the onset.
    OBJECTIVE: The aim of this study was to determine the perceived risk of developing T2DM and its knowledge among the offspring of diabetic patients.
    METHODS: A cross sectional study using a self-administered questionnaire was conducted among university students whose parents had type 2 diabetes to determine their perceived risk and knowledge on T2DM.
    RESULTS: A total of 336 university students participated in this study and 56.5% of them correctly identified themselves at risk of developing T2DM. About half of them (52.7%) had higher knowledge of T2DM. Male students appeared to have better risk perception (p=0.024) compared to females while those with mothers affected by T2DM appear to have higher knowledge regarding diabetes (p=0.007). Most of their information regarding T2DM was obtained from the internet (87.5%) and other family members (77.9%).
    CONCLUSION: The students whose mothers had T2DM appear to have better knowledge and information regarding T2DM and this was mostly obtained from the internet and family members. Awareness regarding diabetes and healthy lifestyles advice through primary patients may be beneficial for their offspring.
    Study site: Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
    MeSH terms: Cross-Sectional Studies; Diabetes Mellitus, Type 2; Female; Humans; Malaysia; Male; Mothers; Surveys and Questionnaires; Students; Universities; Internet; Healthy Lifestyle
  16. Nelson Yap KB, Albert Wong SH, Idris Z
    Med J Malaysia, 2020 11;75(6):660-665.
    PMID: 33219174
    BACKGROUND: Some surgeons advocate the usage of tranexamic acid (TXA) in traumatic brain injury (TBI). The aim of this study is to determine the effectiveness and safety of TXA in improving the outcome of TBI patients and in reducing the rate of clot expansion and mortality in TBI as compared to those without TXA.

    METHODS: This is a prospective observational cohort study conducted in Sarawak General Hospital, Malaysia. Patients 12 years of age and older with mild to severe TBI who had a brain computed tomography (CT) done within eight hours of injury were enrolled in the study. A total of 334 patients were recruited from the 5th of August 2016 until the 8th of March 2018 in Sarawak General Hospital. In all 167 of them were administered with TXA and another 167 of the patients were not. The primary outcome expected is the number of good outcomes in isolated TBI patients given TXA. Good outcome is defined by Glasgow Outcome Score-Extended (GOSE) of five and above. Secondary outcome was clot expansion of an intracranial bleed seen on the first scan that had expanded by 25% or more on any dimension on the second scan.

    RESULTS: The TXA did not show significant trend of good outcome in terms of GOSE (p=0.763). However, for moderate and severe acute subdural haemorrhage (SDH) subgroups, there was a significant difference (p=0.042). Clot expansion was present in 14 patients (12.7%) with TXA given and in 54 patients (38.8%) without TXA. The difference was statistically significant (p<0.001). Of the patients who received TXA, there was one case (0.6%) of deep vein thrombosis. Apart from that, TXA showed non-significant trend in reducing mortality (p=0.474).

    CONCLUSIONS: Tranexamic acid reduces the rate of clot expansion in TBI by 26.1% (38.8-12.7%) without significantly increasing the risk of a thrombotic event. It can also improve the outcome of moderate and severe TBI patients with acute SDH.

    MeSH terms: Child; Hospitals, General; Humans; Malaysia; Prospective Studies; Tomography, X-Ray Computed; Tranexamic Acid; Cohort Studies; Hematoma, Subdural, Acute; Venous Thrombosis; Intracranial Hemorrhages; Surgeons; Brain Injuries, Traumatic
  17. Goh CH, Hamzah MR, Kandasamy R, Ghani ARI, Wong SH, Idris Z, et al.
    Med J Malaysia, 2020 11;75(6):666-671.
    PMID: 33219175
    INTRODUCTION: Chiari malformation (CM) is a disorder of mesodermal origin and is commonly associated with syringomyelia. Foramen magnum decompression is the first-line of standard treatment in symptomatic patients with a confirmed radiographic diagnosis. Magnetic resonance (MR) cine allows accurate evaluation of cerebrospinal fluid (CSF) physiology at the craniovertebral junction but often this is under-utilised in Malaysia.

    METHODS: In this series, we looked into nine cases of CM with syringomyelia from clinical and radiological perspective before and after surgery. The radiological parameters were herniated tonsillar length, syrinx: cord ratio, syrinx length and diameter. Flow velocity and morphologic changes in Chiari were illustrated.

    RESULTS: Seven patients showed either reduction in syrinx length, syrinx: cord ratio or both postoperatively. Clinical recovery somewhat varied in motor and sensory symptoms. Four patients gained better functional grade in modified Rankin scale (MRS) while the rest remained similar. The study highlighted the advantage of CSF flow dynamics information over MR anatomical radiographic improvement in addressing the neurologic and functional recovery. We also discussed the practicality of cine sequence in preoperative patient selection, syrinx analysis and postoperative flow evaluation in anticipation of clinical outcome.

    CONCLUSION: Phase-contrast cine MRI is a useful tool dictated by resource availability. We recommend its routine use in preoperative analysis and subsequent observational follow-up after surgery.

    MeSH terms: Arnold-Chiari Malformation; Follow-Up Studies; Foramen Magnum; Humans; Magnetic Resonance Imaging; Malaysia; Magnetic Resonance Spectroscopy; Postoperative Period; Radiography; Syringomyelia; Patient Selection; Magnetic Resonance Imaging, Cine
  18. Takkinsatian P, Silpskulsuk C, Prommalikit O
    Med J Malaysia, 2020 11;75(6):672-676.
    PMID: 33219176
    INTRODUCTION: Salmonella is a common organism, causing intestinal and extraintestinal infections among Thai children, especially infants, and leading to overwhelming antibiotic use.

    MATERIALS AND METHODS: In this retrospective review, data collected during 2006-2015 from the medical charts of patients with evidence of infection, caused by any Salmonella serogroup or clinical form, were examined. We aimed to assess the clinical manifestations, antibiotic susceptibility, and antibiotic use in children with Salmonella gastroenteritis over the ten years' period.

    RESULTS: A total of 419 patients had non-typhoidal Salmonella infection. Four-hundred (95.5%) patients were diagnosed with acute gastroenteritis, which was common in children aged <12 months (72.3%). The clinical features of patients with gastroenteritis included fever (74.5%), diarrhoea with bloody mucus (60.5%), watery diarrhoea (39.5%), and vomiting (19.8%). Serogroup B was most commonly detected in the stool specimens. The susceptibility of non-typhoidal Salmonella to ampicillin, norfloxacin, and co-trimoxazole was 36.3%, 98.0%, and 80.5%, respectively. Serogroup B was the most resistant strain, which was sensitive to ampicillin in only 21.6% of specimens, while it showed high susceptibility to norfloxacin and co-trimoxazole (98.1 and 84.0%, respectively). Third-generation cephalosporin and fluoroquinolone were most commonly prescribed.

    CONCLUSIONS: Acute gastroenteritis is the most common form of Salmonella infection. Gastroenteritis caused by serogroup B is still the most common infection, which mostly occurs among infants under one year of age. The majority of stool specimens were still susceptible to antimicrobial agents, especially fluoroquinolone and cotrimoxazole; however, there was an overuse of antibiotics without proper indications.

    MeSH terms: Ampicillin; Anti-Bacterial Agents; Cephalosporins; Child; Diarrhea; Gastroenteritis; Humans; Infant; Mucus; Norfloxacin; Retrospective Studies; Salmonella; Salmonella Food Poisoning; Salmonella Infections; Thailand; Vomiting; Trimethoprim, Sulfamethoxazole Drug Combination; Serogroup
  19. Sundaram CS, Kumar JS, Kumar SS, Ramesh PLN, Zin T, Rao USM
    Med J Malaysia, 2020 11;75(6):677-684.
    PMID: 33219177
    INTRODUCTION: Brassica oleracea var acephala was studied for preliminary phytochemical screening. The results showed that the ethanolic crude extract of the leaf contain high phytochemical activity hence B.oleracea var acephala is rich in flavonoids, phenolic compounds, carbohydrates and phytosterols.

    MATERIALS AND METHODS: The ethanolic extract was used to synthesise copper nanoparticles. The copper nanoparticles were successfully synthesised from copper sulphate solution which was identified by the colour change from dark green colour of the extract. Thus the B.oleracea var acephala is a good source to synthesis copper nanoparticles. The synthesised copper nanoparticles were characterised using Scanning Electron Microscope (SEM) analysis. The SEM image displayed the high-density nanoparticles synthesised by leaf extracts and that the nanoparticles were crystals in shape.

    RESULTS: The copper nanoparticles (CNP) bind to the leaf extract. B.oleracea var acephala also has shown the antimicrobial and antioxidant activity. A comparative study was done between ethanolic its crude extract and nanoparticles. Both extracts exhibited zone of inhibition and better antioxidant potential but the CuNPs shows major zone of inhibition and showed more antioxidant activity. Anticancer activity of B.oleracea var acephala against Cervical HeLa cell line was confirmed using ethanolic crude extract and CNP. The results showed that HeLa cells proliferation was inhibited with increasing concentration of ethanolic crude extract and copper nanoparticles. From the results, it was seen that percentage viability of the cancer cells decreased with increased concentration of the samples whereas cytotoxicity against HeLa cell lines increased with the increased concentration of the samples.

    CONCLUSION: Thus B.oleracea var acephala possesses anticancer activity against HeLa cell lines.

    MeSH terms: Ethanol; Anti-Infective Agents; Anti-Bacterial Agents; Antioxidants; Carbohydrates; Color; Copper; Flavonoids; HeLa Cells; Humans; Microscopy, Electron, Scanning; Phytosterols; Copper Sulfate; Nanoparticles; Early Detection of Cancer; Phytochemicals
  20. Siti Nor Aishah AR, Mutalib A, Asma H, Baig AA, Naing NN, Hashim SE, et al.
    Med J Malaysia, 2020 11;75(6):685-690.
    PMID: 33219178
    OBJECTIVES: To design and develop a simple vision test algorithm for mobile application and perform a pilot study to determine its validity and reliability as a tool for vision test in the community.

    METHODS: A simple visual acuity test algorithm in the form of a single letter E display was designed as the optotype for development of a mobile application. The standardised optotype is presented at random to test visual acuity for corresponding level of 3/60, 6/60, 6/18, and 6/12. The final result is auto-generated based on the classification of the WHO for visual impairment and blindness. The Snellen chart was used as the gold standard to determine its validity while five different users were involved to determine its inter-rater reliability. A pilot study was performed between April till November 2019, in the Universiti Sultan Zainal Abidin Medical Centre (UMC) at Kuala Nerus and Mooris Optometrist Centre at Marang, Terengganu. A total of 279 participants aged four years old and above were involved in this study.

    RESULTS: The highest sensitivity was found at the vision level cut-off point of 6/12 with the percentage of 92.7% and 86.8% for the right and left eye, respectively. The specificity was more than 89% for all vision levels in both eyes. The Krippendorff's alpha value for the inter-rater reliability was 0.87 and 0.83.

    CONCLUSION: The relatively high level of validity and reliability obtained indicate the feasibility of using the designed optotype to develop a valid and reliable mobile app for vision test. The app can be used to screen vision by nonmedical persons, at anytime and anywhere to help improve public awareness and capability to correctly determine their visual status.

    MeSH terms: Algorithms; Blindness; Child, Preschool; Feasibility Studies; Humans; Pilot Projects; Vision Tests; Visual Acuity; Reproducibility of Results; Vision, Low; Mobile Applications; Optometrists
External Links