Displaying all 20 publications

Abstract:
Sort:
  1. Lim KY, Tham HW
    Health services insights, 2020;13:1178632920921425.
    PMID: 32528223 DOI: 10.1177/1178632920921425
    Background: Zika fever is a mosquito-borne disease with global health concern. It has been underreported or misdiagnosed due to its unspecific clinical manifestations, including mild-influenza like and subclinical symptoms. However, its associated serious complications which include fetal microcephaly and Guillain-Barré syndrome remained a challenge to the public health sectors. This research aimed to evaluate the knowledge, awareness, and perception toward Zika virus infection among community pharmacists in the Klang Valley of Malaysia and to determine the association between the knowledge of Zika virus infectious disease and years of community practice experience among community pharmacists in this region.

    Methods: This survey research was conducted from August to December 2018 through a pre-tested, self-administration, and cross-sectional random convenient sampling at various districts in the Klang Valley. A total of 275 registered community pharmacists were involved in this study by completing a pilot-tested questionnaire. Descriptive analysis, Mann-Whitney U test, and Kruskal-Wallis H test were used to analyze the data.

    Results: The knowledge toward Zika virus infection of respondents was classified into "poor" (5.1%), "basic" (70.9%), and "broad" (24.0%). Most of the participants (n = 195, 70.9%) presented with basic knowledge toward Zika virus infection. A total of 268 (97.5%) participants presented with high awareness toward Zika virus infection. The mean score of respondents' knowledge and awareness was 15.88 ± 3.61 (maximum score = 28) and 13.96 ± 1.60 (maximum score = 16), respectively. There was a statistically significant difference between the years of practice of community pharmacists and the level of knowledge toward Zika virus infection.

    Conclusions: In conclusion, our respondents demonstrated a basic level of knowledge and high awareness toward Zika virus infection. Also, we highlighted some possible pitfalls in the knowledge of Zika virus infection, including the virus transmission, symptoms, diagnosis, treatment, prevention, and complications of the disease.

  2. Lim KY, Foo KY
    Environ Res, 2021 Sep 10;204(Pt B):112044.
    PMID: 34516977 DOI: 10.1016/j.envres.2021.112044
    In this work, the transformation of soybean industrial bio-residue with limited practical applications, into a multifunctional carbonaceous adsorbent (SBAC) via one-step microwave-irradiation has been succeeded. The surface porosity, chemical compositions, functionalities and surface chemistry were featured by microscopic pore-textural analysis, elemental constitution analysis, morphological characterization and Fourier transform infra-red spectroscopy. The adsorptive performance of SBAC was evaluated in a batch experiment by adopting different classes of water pollutants, specifically methylene blue (MB), acetaminophen and 2,4-dichlorophenoxyacetic acid (2,4-D). The equilibrium uptakes were analyzed with respect to the non-linearized Langmuir, Freundlich and Temkin isotherm equations. The unique features of SBAC, specifically the antimicrobial and antifungal efficacies were examined against gram-positive/negative bacteria and fungi species. An ordered microporous-mesoporous structure of SBAC, with the BET surface area and total pore volume of 1696 m2/g and 0.94 m3/g, respectively, has been achieved. The equilibrium data of MB and acetaminophen were found to be in good agreement with the Langmuir isotherm model, with the monolayer adsorption capacities (Qo) of 434.57 mg/g and 393.31 mg/g, respectively. The adsorptive experiment of 2,4-D was best fitted to the Freundlich isotherm equation, with the Qo of 253.17 mg/g. The regeneration performance of the spent SBAC under microwave-irradiation could maintain at 69.42-79.31%, even after five (5) adsorption-regeneration cycles. SBAC exhibited excellent inhibition efficiencies against gram-positive/negative bacteria and fungi species, with the inhibition zones at 14.0-28.0 mm. This newly developed SBAC appears to be a new powerful candidate for the remediation of different classes of water contaminants, and novel antibacterial and antifungal agents against biological contaminations. The novel concept of "turn waste into wealth" in a cost-effective and energy saving manner for environmental preservation has been successfully accomplished.
  3. Lim KY, Foo KY
    Environ Int, 2021 12;157:106851.
    PMID: 34560322 DOI: 10.1016/j.envint.2021.106851
    The present work has been oriented to the qualitative and quantitative assessments of the aftermath effects of 2014 flood tragedy on the organic, inorganic and microbial contaminants in the floodwater, with a particular emphasis on their relative health risks and microbial infectious hazards to the flood-affected population, using average daily dose, hazard quotient, hazard index (HI), cancer risk (CR) and quantitative microbial risk assessment. Statistical comparison of the organic and inorganic contents was performed using the paired t-tests, while the predominant socio-demographic profiles and health attributes of the respondents to flood-induced health risks (HI) were verified by the chi-square test and binary logistic regression analysis. Among all, Fe, Cu, Pb, Ni, Zn, Cr, Cd, chlorpyrifos, diazinon, polycyclic aromatic hydrocarbons, estriol, 17α-ethinylestradiol, estrone, β-estradiol and bisphenol A were detected at the study area after flooding. The microbiological quality of the floodwater samples has been tracked positive for Escherichia coli, Salmonella typhimurium and Shigella flexneri, with the mean concentrations of 6500, 50 and 180 CFU/100 mL, respectively. Exposure and health risk assessments revealed that the overall HI value for organic and inorganic contaminants in the water samples was 1.19, exceeding the USEPA maximum limit of 1, after the flood incidence. The largest CR contributors were Ni, Cr and Cd, while the infection risks (Pinf,single) associated with the exposure of E. coli, Salmonella spp. and Shigella spp. were identified to be 3.1 × 10-2, 1.2 × 10-4 and 3.2 × 10-5 for incidental scenario; and 8.3 × 10-1, 3.9 × 10-1 and 1.9 × 10-1 for intentional scenario, respectively. The findings of these integrated tools are critically important to provide a more reliable quantitative assessment of human health hazards and microbial risks for different environmental settings, to safeguard water resource, and preservation of public health and the overall river ecosystem.
  4. Lim KY, Lim TA, Wong WH
    Med J Malaysia, 2005 Dec;60(5):647-9.
    PMID: 16515119
    Anaesthetizing patients with Long QT Syndrome is a major challenge, as the potential for sudden catastrophic cardiovascular collapse is well known. We present a 15-year-old boy with Long QT Syndrome who presented for an elective renal transplant. All electrolyte concentration abnormalities were corrected preoperative and adequate beta-blockade was maintained. The patient was given a target controlled infusion of propofol, together with opioids and atracurium. Anaesthesia was uneventful and the patient was extubated at the end of the surgical procedure.
  5. Lim TA, Wong WH, Lim KY
    J Anesth, 2006;20(2):153-5.
    PMID: 16633780
    The effect-compartment concentration (C(e)) of a drug at a specific pharmacodynamic endpoint should be independent of the rate of drug injection. We used this assumption to derive an effect-compartment equilibrium rate constant (k(eo)) for propofol during induction of anesthesia, using a target controlled infusion device (Diprifusor). Eighteen unpremedicated patients were induced with a target blood propofol concentration of 5 microg x ml(-1) (group 1), while another 18 were induced with a target concentration of 6 microg x ml(-1) (group 2). The time at loss of the eyelash reflex was recorded. Computer simulation was used to derive the rate constant (k(eo)) that resulted in the mean C(e) at loss of the eyelash reflex in group 1 being equal to that in group 2. Using this population technique, we found the k(eo) to be 0.57 min(-1). The mean (SD) effect compartment concentration at loss of the eyelash reflex was 2.39 (0.70) microg x ml(-1). This means that to achieve a desired C(e) within 3 min of induction, the initial target blood concentration should be set at 1.67 times that of the desired C(e) for 1 min, after which it should revert to the desired concentration.
  6. Lim TA, Wong WH, Lim KY
    Med J Malaysia, 2005 Oct;60(4):432-40.
    PMID: 16570704
    The objective of this survey was to obtain a self-reported assessment of the use of information technology (IT) by final year medical students. Two hundred and sixty five students responded to a questionnaire survey. 81.5% of students considered their computer skills adequate, while 87.9% had access to computers outside the campus. Most students reported adequate skills at word processing, e-mailing and surfing the Internet. Fifty three percent of students spent three hours or more each week on the computer. While students indicated a general willingness to access Internet-based materials, further steps need to be taken to increase the use of this method of instruction.
  7. Chang JV, Lim KY, Ang EL
    MyJurnal
    Objectives: This is a retrospective study in which all neonates with confirmed dengue fever mother admitted to our special care nursery from March 2014 to March 2015 were recruited. This is to determine the percentage of positive dengue serology in the neonates of mother with confirmed dengue fever and to investigate the correlation between the duration of maternal illness with these neonatal seropositivity of dengue antibody and their presenting symptoms.

    Method: A total of 22 neonates whose mother with confirmed dengue fever were recruited out of which 14 (63.6%) neonates of confirmed dengue fever mothers had positive dengue serology.

    Results: Eight out of fourteen neonates were dengue seropositive when mother dengue illness was between day 1 to 5 of illness (acute phase) at the time of delivery. Thirteen out of twenty-two neonates (59%) were symptomatic, out of which 61.5% (8 out of 13) were delivered during maternal acute phase of illness.

    Conclusion: From this study, we concluded that neonates were more likely to be dengue seropositive and symptomatic when mother presented in acute phase of illness during delivery. However, our sample size was small, only 22 neonates were recruited from a single centre, therefore a larger sample size from multicentre is required in future.
  8. Aimanan K, Chea CH, Lim KY, Damodaran A
    BMJ Case Rep, 2019 May 24;12(5).
    PMID: 31129637 DOI: 10.1136/bcr-2018-228255
    Pseudoaneurysm of the ankle involving the posterior tibial artery is a rare presentation with only four paediatric cases previously reported in English literature. We report a new case following blunt trauma with the clinical presentation and management strategy. A 6-year-old boy presented with a pulsatile swelling at the medial aspect of ankle following a history of blunt trauma 3 weeks ago. Imaging confirmed pseudoaneurysm involving the distal posterior tibial artery. Excision of the pseudoaneurysm was performed without any complication.
  9. Lim KY, Rajah R, Ng BH, Soo CI
    Med J Malaysia, 2020 07;75(4):430-432.
    PMID: 32724009
    Chronic obstructive pulmonary disease (COPD) is a debilitating progressive lung disease characterised by irreversible airflow obstruction. In addition to an increase in morbidity and mortality, exacerbation also results in frequent hospital visits, which place a burden on healthcare systems. Non-invasive positive pressure ventilation (NPPV) with conventional inspiratory pressures is the standard ventilatory support for patients in exacerbation. At present, the use of higher inspiratory pressures through high intensity noninvasive positive pressure ventilation (Hi-NPPV) during an exacerbation remains unknown. We describe a novel application of Hi-NPPV in a patient with acute exacerbation who was refractory to conventional NPPV.
  10. Lim KY, Ang EL, Tan KK, Mustakim S
    MyJurnal
    Neonatal malaria may be overlooked likely due to its non-specific features and low prevalence in Malaysia. In this case report, we detail a case of neonatal malaria in an 18-day old baby girl of Myanmar origin who presented with 6 days of intermittent fever but was otherwise well. Initially, she was treated as neonatal sepsis. She then developed thrombocytopaenia and severe anaemia with persistent spikes of temperature. This prompted a series of investigations and multiple changes of antibiotics. The diagnosis of neonatal malaria surfaced when her peripheral blood film incidentally revealed the presence of Plasmodium vivax parasites. Peripheral blood smears are simple and inexpensive. Therefore practising especially in endemic areas for malaria, we need to consider this diagnosis when dealing with neonatal sepsis that does not respond to standard treatment.
  11. Lim KY, Khoo CS, Rajah R, Tan HJ, Tajurudin FW
    Med J Malaysia, 2023 Sep;78(5):635-638.
    PMID: 37775491
    INTRODUCTION: Epilepsy is a neurological disease with high global prevalence. Almost one-third of epilepsy patients continue having seizures despite adequate treatment. Perampanel has been widely used in the Western countries as an adjunctive therapy for both generalized and focal seizures. Owing to its high cost, the use of perampanel is limited in our country.

    MATERIALS AND METHODS: We conducted a descriptive, retrospective study among epilepsy patients treated with perampanel. We aimed to assess the efficacy and safety of perampanel as an adjunctive in our hospital.

    RESULTS AND CONCLUSIONS: From our cohort of 25 patients, most of the patients were either on one or three anti-seizure medications (ASMs) prior to initiation of perampanel. Perampanel was added in 88% of them due to persistent seizures. Twenty-two (88%) patients experienced reduction in seizure frequency. 12% experienced mild side effects, which were leg cramps, hyponatremia and drowsiness. Only 1 patient stopped perampanel due to its side effects.

    CONCLUSION: Perampanel is a well-tolerated ASM that should be widely used as an adjunctive. More studies with regards to its efficacy and safety involving more centres are encouraged in Malaysia.

  12. Tan HJ, Lim KY, Rajah R, Ng CF
    BMJ Case Rep, 2021 Nov 17;14(11).
    PMID: 34789530 DOI: 10.1136/bcr-2021-246499
    Lithium is a medication with a variety of medical usage for various diseases including bipolar mood disorder. As the therapeutic window of lithium is narrow, its usage is commonly associated with toxicity. Lithium toxicity affects multiple systems especially the central nervous system, leading to neuropsychiatric complications. Haemodialysis is an effective method for lithium removal especially in severe lithium toxicity such as neurotoxicity with electroencephalogram changes. We describe a case of lithium neurotoxicity with electroencephalographic abnormalities which was reversed following haemodialysis.
  13. Rajah R, Lim KY, Ng BH, Soo CI
    Malays J Med Sci, 2021 Aug;28(4):146-152.
    PMID: 34512139 DOI: 10.21315/mjms2021.28.4.15
    Acute dyspnea is one of the prevalent reasons for admission to the emergency department. The use of N-terminal pro-B-type natriuretic peptide (NT-proBNP) as an adjunct for assessing acute dyspnea is not a common practice in many public hospitals in Malaysia. This retrospective review is part of our clinical audit to determine the utility of NT-proBNP as an adjunct to non-standardised clinical evaluation in identifying acute heart failure (HF) in patients with persistent dyspnea (24 h) post-admission. In this cohort of 30 patients with acute dyspnea, NT-proBNP was positive in 20 patients (87%) with acute HF. Three patients (13%) who were treated for septic shock recorded a NT-proBNP false-positive. NT-proBNP demonstrated an overall sensitivity of 90%, a specificity of 70%, a positive predictive value of 85.7% and a negative predictive value of 77.8% in identifying acute HF. These results reinforce that age-stratified NT-proBNP cut-off values are useful for ruling-in or -out acute HF. Thus, NT-proBNP should be considered a crucial point of care, testing to decifer the conundrum of acute dyspneic patients.
  14. Tan KS, Armugam A, Sepramaniam S, Lim KY, Setyowati KD, Wang CW, et al.
    PLoS One, 2009;4(11):e7689.
    PMID: 19888324 DOI: 10.1371/journal.pone.0007689
    The methods currently available for diagnosis and prognosis of cerebral ischaemia still require further improvements. Micro-RNAs (small non-coding RNAs) have been recently reported as useful biomarkers in diseases such as cancer and diabetes. We therefore carried out microRNA (miRNA) profiling from peripheral blood to detect and identify characteristic patterns in ischaemic stroke.
  15. Zolio L, Lim KY, McKenzie JE, Yan MK, Estee M, Hussain SM, et al.
    Osteoarthritis Cartilage, 2021 08;29(8):1096-1116.
    PMID: 33971205 DOI: 10.1016/j.joca.2021.03.021
    OBJECTIVE: To determine the prevalence of neuropathic-like pain (NP) and pain sensitization (PS) defined by self-report questionnaires in knee and hip osteoarthritis, and whether prevalence is potentially explained by disease-severity or affected joint.

    DESIGN: MEDLINE, EMBASE, CINAHL were systematically searched (1990-April 2020) for studies describing the prevalence of NP and PS in knee and hip osteoarthritis using self-report questionnaires. Random-effects meta-analysis was performed. Statistical heterogeneity between studies and sub-groups (affected joint and population source as a proxy for disease severity) was assessed (I2 statistic and the Chi-squared test).

    RESULTS: From 2,706 non-duplicated references, 39 studies were included (2011-2020). Thirty-six studies reported on knee pain and six on hip pain. For knee osteoarthritis, the pooled prevalence of NP was: using PainDETECT, possible NP(score ≥13) 40% (95%CI 32-48%); probable NP(score >18) 20% (95%CI 15-24%); using Self-Report Leeds Assessment of Neuropathic Symptoms and Signs, 32% (95%CI 26-38%); using Douleur Neuropathique (DN4) 41% (95% CI 24-59%). The prevalence of PS using Central Sensitization Inventory (CSI) was 36% (95% CI 12-59%). For hip osteoarthritis, the pooled prevalence of NP was: using PainDETECT, possible NP 29% (95%CI 22-37%%); probable NP 9% (95%CI 6-13%); using DN4 22% (95%CI 12-31%) in one study. The prevalence of possible NP pain was higher at the knee (40%) than the hip (29%) (difference 11% (95% CI 0-22%), P = 0.05).

    CONCLUSIONS: Using self-report questionnaire tools, NP was more prevalent in knee than hip osteoarthritis. The prevalence of NP in knee and hip osteoarthritis were similar for each joint regardless of study population source or tool used. Whether defining NP using self-report questionnaires enables more effective targeted therapy in osteoarthritis requires investigation.

  16. Lim KY, Shukeri WFWM, Hassan WMNW, Mat-Nor MB, Hanafi MH
    Indian J Crit Care Med, 2022 Oct;26(10):1126-1130.
    PMID: 36876199 DOI: 10.5005/jp-journals-10071-24324
    BACKGROUND: The association between interleukin-6 (IL-6) and serum albumin (ALB) with mortality in critically ill elderly patients, either as stand-alone biomarkers or in combination, has been scarcely reported. We, therefore, aimed to investigate the prognostic value of the IL-6-to-albumin ratio in this special population.

    PATIENTS AND METHODS: This was a cross-sectional study conducted in the mixed intensive care unit (ICU) of two university-affiliated hospitals in Malaysia. Consecutive elderly patients (aged above or equal to 60 years) admitted to the ICU, who underwent simultaneous measurement of plasma IL-6 and serum ALB, were recruited. The prognostic value of the IL-6-to-albumin ratio was assessed by analysis of the receiver-operating characteristic (ROC) curve.

    RESULTS: A total of 112 critically ill elderly patients were recruited. The outcome of all-cause ICU mortality was 22.3%. The calculated IL-6-to-albumin ratio was significantly higher in the non-survivors compared to the survivors {14.1 [interquartile range (IQR), 6.5-26.7] vs 2.5 [(IQR, 0.6-9.2) pg/mL, p <0.001]}. The area under the curve (AUC) of IL-6-to-albumin ratio for discrimination of ICU mortality was 0.766 [95% confidence interval (CI), 0.667-0.865, p <0.001] which was slightly higher than that of IL-6 and albumin alone. The ideal cut-off value of the IL-6-to-albumin ratio was above 5.7 with a sensitivity of 80.0% and specificity of 64.4%. After adjusting for severity of illness, the IL-6-to-albumin ratio remained as an independent predictor of ICU mortality with an adjusted odd ratio of 0.975 (95% CI, 0.952-0.999, p = 0.039).

    CONCLUSION: The IL-6-to-albumin ratio offers a slight improvement in mortality prediction than either of its constituent individual biomarkers and as such, it may be a potential tool to aid in the prognostication of critically ill elderly patients although this requires further validation in a larger prospective study.

    HOW TO CITE THIS ARTICLE: Lim KY, Shukeri WFWM, Hassan WMNW, Mat-Nor MB, Hanafi MH. The Combined Use of Interleukin-6 with Serum Albumin for Mortality Prediction in Critically Ill Elderly Patients: The Interleukin-6-to-albumin Ratio. Indian J Crit Care Med 2022;26(10):1126-1130.

  17. Lim KY, Raja Ali RA, Wong Z, Zaki FM, Maktar JF, Muhammad Nawawi KN
    Saudi J Gastroenterol, 2023;29(5):300-308.
    PMID: 36876618 DOI: 10.4103/sjg.sjg_531_22
    BACKGROUND: The use of intestinal ultrasound (IUS) in the management of inflammatory bowel disease (IBD) is emerging. We aim to determine the performance of IUS in the assessment of disease activity in IBD.

    METHODS: This is a prospective cross-sectional study of IUS performed on IBD patients in a tertiary centre. IUS parameters including intestinal wall thickness, loss of wall stratification, mesenteric fibrofatty proliferation, and increased vascularity were compared with endoscopic and clinical activity indices.

    RESULTS: Among the 51 patients, 58.8% were male, with a mean age of 41 years. Fifty-seven percent had underlying ulcerative colitis with mean disease duration of 8.4 years. Against ileocolonoscopy, IUS had a sensitivity of 67% (95% confidence interval (CI): 41-86) for detecting endoscopically active disease. It had high specificity of 97% (95% CI: 82-99) with positive and negative predictive values of 92% and 84%, respectively. Against clinical activity index, IUS had a sensitivity of 70% (95% CI: 35-92) and specificity of 85% (95% CI: 70-94) for detecting moderate to severe disease. Among individual IUS parameters, presence of bowel wall thickening (>3 mm) had the highest sensitivity (72%) for detecting endoscopically active disease. For per-bowel segment analysis, IUS (bowel wall thickening) was able to achieve 100% sensitivity and 95% specificity when examining the transverse colon.

    CONCLUSIONS: IUS has moderate sensitivity with excellent specificity in detecting active disease in IBD. IUS is most sensitive in detecting a disease at transverse colon. IUS can be employed as an adjunct in the assessment of IBD.

  18. Lim KY, Yasim-Anuar TAT, Sharip NS, Ujang FA, Husin H, Ariffin H, et al.
    Polymers (Basel), 2023 Mar 01;15(5).
    PMID: 36904501 DOI: 10.3390/polym15051258
    Lignin is a natural biopolymer with a complex three-dimensional network and it is rich in phenol, making it a good candidate for the production of bio-based polyphenol material. This study attempts to characterize the properties of green phenol-formaldehyde (PF) resins produced through phenol substitution by the phenolated lignin (PL) and bio-oil (BO), extracted from oil palm empty fruit bunch black liquor. Mixtures of PF with varied substitution rates of PL and BO were prepared by heating a mixture of phenol-phenol substitute with 30 wt.% NaOH and 80% formaldehyde solution at 94 °C for 15 min. After that, the temperature was reduced to 80 °C before the remaining 20% formaldehyde solution was added. The reaction was carried out by heating the mixture to 94 °C once more, holding it for 25 min, and then rapidly lowering the temperature to 60 °C, to produce the PL-PF or BO-PF resins. The modified resins were then tested for pH, viscosity, solid content, FTIR, and TGA. Results revealed that the substitution of 5% PL into PF resins is enough to improve its physical properties. The PL-PF resin production process was also deemed environmentally beneficial, as it met 7 of the 8 Green Chemistry Principle evaluation criteria.
Related Terms
Filters
Contact Us

Please provide feedback to Administrator (afdal@afpm.org.my)

External Links