Displaying publications 81 - 100 of 123 in total

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  1. Teo SW, Noorafidah MD, Laili SAL
    Med J Malaysia, 2020 03;75(2):175-177.
    PMID: 32281604
    Nasopharyngeal mass in paediatric population is usually benign and malignant nasopharyngeal tumours such as carcinoma is rare. We report a case of nasopharyngeal carcinoma (NPC) in an adolescent with atypical imaging findings that mimicked a benign mass. This highlights the importance of a comprehensive review on the distinctive radiographic features of paediatric nasopharyngeal mass. We discuss the imaging features of NPC in the paediatric group, which differ from the elderly patients. By recognising these distinctive imaging features, it may help in diagnosing typical case. This case report serves as a reminder that NPC, despite being uncommon, should be considered in the differential diagnosis of a juvenile nasopharyngeal mass.
    Matched MeSH terms: Diagnostic Tests, Routine
  2. Jani J, Abu Bakar SF, Mustapha ZA, Ling CK, Teo R, Ahmed K
    Microbiol Resour Announc, 2020 Jan 09;9(2).
    PMID: 31919173 DOI: 10.1128/MRA.01322-19
    This is a report on the whole-genome sequence of Mycobacterium tuberculosis strain SBH163, which was isolated from a patient in the Malaysian Borneo state of Sabah. This report provides insight into the molecular characteristics of an M. tuberculosis Beijing genotype strain related to strains from Russia and South Africa.
    Matched MeSH terms: Diagnostic Tests, Routine
  3. Lopez CA, Castillo LF, Corchado JM
    Sensors (Basel), 2021 Jan 06;21(2).
    PMID: 33418918 DOI: 10.3390/s21020328
    Internet of Things (IoT) should not be seen only as a cost reduction mechanism for manufacturing companies; instead, it should be seen as the basis for transition to a new business model that monetizes the data from an intelligent ecosystem. In this regard, deciphering the operation of the value creation system and finding the balance between the digital strategy and the deployment of technological platforms, are the main motivations behind this research. To achieve the proposed objectives, systems theory has been adopted in the conceptualization stage, later, fuzzy logic has been used to structure a subsystem for the evaluation of input parameters. Subsequently, system dynamics have been used to build a computational representation and later, through dynamic simulation, the model has been adjusted according to iterations and the identified limits of the system. Finally, with the obtained set of results, different value creation and capture behaviors have been identified. The simulation model, based on the conceptualization of the system and the mathematical representation of the value function, allows to establish a frame of reference for the evaluation of the behaviour of IoT ecosystems in the context of the connected home.
    Matched MeSH terms: Diagnostic Tests, Routine
  4. Anis Farhana Mohd Kassim, Azlina Mohd Khir, Mohd Ziyad Afiq Zaharim
    MyJurnal
    Kajian ini dilakukan untuk menentukan hubungan antara motivasi membaca, persekitaran membaca di rumah dan sikap membaca dalam kalangan pelajar Universiti Putra Malaysia. Seramai 214 pelajar UPM yang dipilih melalui kaedah persampelan pelbagai peringkat terlibat dalam kajian ini. Satu set borang soal selidik yang diedar kepada responden mengandungi tiga instrumen iaitu Survey of Adolescent Reading Attitudes, Motivations for Reading Questionnaire (MRQ) dan Students’s Reading Environments at Home: Exposure and Support. Hasil kajian menunjukkan sikap membaca bahan bacaan digital dan bercetak pelajar UPM berada pada tahap tinggi. Selain itu, kajian mendapati motivasi membaca intrinsik dan ekstrinsik serta persekitaran membaca di rumah pelajar UPM berada pada tahap sederhana. Keputusan menunjukkan terdapat hubungan positif secara signifikan antara motivasi membaca intrinsik, motivasi ekstrinsik dan persekitaran membaca di rumah dengan sikap membaca bahan bacaan digital dan bercetak. Kesimpulannya, motivasi membaca dan persekitaran membaca di rumah mempunyai hubungan signifikan dengan sikap membaca dalam kalangan pelajar UPM. Untuk melahirkan generasi yang mempunyai sikap membaca yang positif, pihak yang bertanggungjawab seperti ibu bapa terutamanya perlu mewujudkan persekitaran membaca yang kondusif di rumah agar dapat memupuk motivasi membaca dan sikap yang positif dalam kalangan anak-anak. Selain itu, pihak univerisiti dan pensyarah juga perlu mengambil langkah yang proaktif dalam mempromosi dan menggalakkan amalan membaca agar ia terus menjadi satu budaya dalam kalangan pelajar di institusi pengajian tinggi.
    Matched MeSH terms: Diagnostic Tests, Routine
  5. LIM XUE YEN, AHMAD FITRIADHY
    MyJurnal
    Concerning on navigational safety of a ship, comprehensive investigation of manoeuvrability of the ship is prominently required. The turning instability due to improper speed and magnitude of the rudder angle is vulnerable to serious accidents such as collision especially in the confined waters. This paper presents a computational fluid dynamic analyses on manoeuvrability performance of a tug in calm water. Here, the characteristics of the turning ability and zig-zag characteristics of the tug has been assessed due to effect of the various angles of twin-rudder and turning speeds. The results revealed that the increase of rudder’s angle resulted in subsequent reduction of her advance diameter from 144 m, 108 m, 96 m to 92 m. While for zig zag manoeuvre, the first overshoot angle is 0.6° and 1.08° for 10°/10° and 20°/20° rudder’s angle respectively. The first overshoot and second overshoot angle are within the IMO criteria which is below 20° and 25°. However, the increase of turning speed from 7 knots to 9 knots has been proportional with the increase of the turning diameter (advance diameter) from 70 m to 105.2 m. Basically, the turning performances of the tug manoeuvring with the turning speed of 7 to 9 knots incorporated with rudder’s angle 20°, 25°, 30° and 35° have been complied with IMO manoeuvring standards. This preliminary analysis contributes very valuable findings at early ship design stage to provide a safety of the navigational guidance for turning ability of the tug.
    Matched MeSH terms: Diagnostic Tests, Routine
  6. Ramli FF
    Bosn J Basic Med Sci, 2021 Jun 01;21(3):261-269.
    PMID: 32415819 DOI: 10.17305/bjbms.2020.4759
    Mercury is a toxic substance that is commonly used in skin lightening products. Various effects on humans have been observed, which affect both users and non-users. Many studies reported delayed diagnosis and treatment, even after weeks of hospitalization. The possible reasons are non-specific clinical manifestation and lack of awareness and knowledge regarding chronic mercury intoxication secondary to skin lightening products. A thorough history of mercury exposure is crucial. Physical assessment and relevant supporting tests are indicated to establish a diagnosis. Blood and urine mercury levels are an essential examination for diagnosis and monitoring of the progress and response to treatment. The primary treatment is the discontinuation of the skin lightening products. Chelation therapy is not mandatory and is usually indicated for symptomatic patients. The prognosis depends on the duration of the product use, concentration of mercury in the skin product, and the severity of clinical presentation.
    Matched MeSH terms: Diagnostic Tests, Routine
  7. Rajagopal R, Thachil J, Monagle P
    Arch Dis Child, 2017 Feb;102(2):187-193.
    PMID: 27540263 DOI: 10.1136/archdischild-2016-311053
    Disseminated intravascular coagulation (DIC) in paediatrics is associated with significant morbidity and mortality. Although there have been several recent advances in the pathophysiology of DIC, most of these studies were done in adults. Since the haemostatic system is very different in early life and changes dramatically with age, creating a variety of challenges for the clinician, delay in the diagnosis of DIC can happen until overt DIC is evident. In this review article, we report the aetiology, pathophysiology, clinical manifestations, diagnostic tests and a management algorithm to guide paediatricians when treating patients with DIC.
    Matched MeSH terms: Diagnostic Tests, Routine
  8. Cheng, Yin Tan, Lingam, Ganeshwara, Suhailah Abdullah, Ai, Huey Tan, Tai, Sharon Mei-Ling, Norlisah Ramli, et al.
    Neurology Asia, 2015;20(1):79-84.
    MyJurnal
    Primary angiitis of the central nervous system (PACNS) is a rare vasculitis restricted to the central nervous system without systemic involvement. Delay in diagnosis and treatment is common due to its non-specific symptoms and lack of non-invasive diagnostic tests. Myelopathy can occur in PACNS, during the clinical course of the illness, with or without cerebral symptoms. We describe here a 51 year-old ethnic Chinese woman who presented initially with paraparesis without cerebral symptoms. The diagnosis of PACNS was eventually made from brain biopsy when she subsequently developed cerebral involvement. Despite aggressive treatment, the patient developed progressive neurological deterioration and died. This patient demonstrates the rare occurrence of myelopathy as the sole initial presentation of PACNS.
    Matched MeSH terms: Diagnostic Tests, Routine
  9. Mohd Dzaki, Mohd Amir, Sanuri, Ishak
    MyJurnal
    Magnetic actuator driven switchgear is a new medium voltage switchgear technology. In this switchgear, the conventional spring mechanism which is used to operate the circuit breaker is replaced with a magnetic actuator mechanism. The suitability of this technology in the Malaysian utility network specifically in highly loaded areas with frequent switching was assessed via a field evaluation. Preliminary results indicated that magnetic actuator driven switchgear perform commendably on the safety aspect, on-site performance monitoring and online diagnostic test results. However, there are several concerns that need to be addressed such as the ease of installation, substation system requirements, high life cycle cost and reliability of components, before this technology can be used widely.
    Matched MeSH terms: Diagnostic Tests, Routine
  10. Tsai MH, Chan CK, Chang YC, Lin CH, Liou CW, Chang WN, et al.
    Front Neurol, 2018;9:515.
    PMID: 30034362 DOI: 10.3389/fneur.2018.00515
    Objective: Focal epilepsy is the most common subtype of epilepsies in which the influence of underlying genetic factors is emerging but remains largely uncharacterized. The purpose of this study is to determine the contribution of currently known disease-causing genes in a large cohort (n = 593) of common focal non-lesional epilepsy patients. Methods: The customized focal epilepsy gene panel (21 genes) was based on multiplex polymerase chain reaction (PCR) and sequenced by Illumina MiSeq platform. Results: Eleven variants (1.85%) were considered as pathogenic or likely pathogenic, including seven novel mutations. There were three SCN1A (p.Leu890Pro, p.Arg1636Ter, and p.Met1714Val), three PRRT2 (two p.Arg217Profs*8 and p.Leu298Pro), two CHRNA4 (p.Ser284Leu, p.Ile321Asn), one DEPDC5 (p.Val516Ter), one PCDH19 (p.Asp233Asn), and one SLC2A1 (p.Ser414Ter) variants. Additionally, 16 other rare variants were classified as unknown significance due to inconsistent phenotype or lack of segregation data. Conclusion: Currently known focal epilepsy genes only explained a very small subset of focal epilepsy patients. This indicates that the underlying genetic architecture of focal epilepsies is very heterogeneous and more novel genes are likely to be discovered. Our study highlights the usefulness, challenges and limitations of using the multi-gene panel as a diagnostic test in routine clinical practice in patients with focal epilepsy.
    Matched MeSH terms: Diagnostic Tests, Routine
  11. Mikail M, Putra TATR, Suri AS, Hezmee MNM, Marina MT
    Vet World, 2017 Nov;10(11):1297-1300.
    PMID: 29263588 DOI: 10.14202/vetworld.2017.1297-1300
    Aim: Farms that are neighboring wildlife sanctuaries are at risk of spillover infection from wildlife, and the objective of this research is to examine the species diversity of Malaysian fruit bats in livestock farm in determining the possible risk of spill over infection to livestock.

    Materials and Methods: Fifty individual fruit bats were captured using six mists net, from May to July 2017. The nets were set at dusk (1830 h) as bats emerge for foraging and monitored at every 30-min intervals throughout the night until dawn when they returned to the roost. The nets were closed for the day until next night, and captured bats were identified to species levels.

    Results: All the captured bats were mega chiropterans, and Cynopterus brachyotis was the highest captured species, representing 40% of the total capture. Shannon-Weiner index is 2.80, and Simpson index is 0.2. Our result suggests that there is a degree of species dominance with low diversity in Lenggong Livestock Breeding Center.

    Conclusion: We concluded that fruit bats are indeed, encroaching livestock areas and the species identified could be a potential source of infection to susceptible livestock. Hence, an active surveillance should be embarked on farms that border wildlife sanctuaries.

    Matched MeSH terms: Diagnostic Tests, Routine
  12. Rahman M, Ahmad Shariff A, Shafie A, Saaid R, Md Tahir R
    Iran J Public Health, 2014 Jan;43(1):16-27.
    PMID: 26060675
    Caesarean section (c-section) rates have been increasing dramatically in the past decades around the world. This increase has been attributed to multiple factors such as maternal, socio-demographic and institutional fac-tors. Therefore, this study examines the impact of maternal, socio-demographic and relevant characteristics on caesar-ean delivery in the northern region of Bangladesh.
    Matched MeSH terms: Diagnostic Tests, Routine
  13. Lee SP, Chai ST, Loh LT, Ali NM
    J ASEAN Fed Endocr Soc, 2020;35(2):220-223.
    PMID: 33442194 DOI: 10.15605/jafes.035.02.07
    Primary hyperparathyroidism in children and adolescents is rare and often symptomatic at presentation. A 15-year-old bo presented with bilateral genu valgum for two years. Biochemical results were consistent with primary hyperparathyroidism Calcium levels normalized two months after removal of a left inferior parathyroid adenoma.
    Matched MeSH terms: Diagnostic Tests, Routine
  14. Mohamad N, Abd Halim NN, Ahmad R, Baharuddin KA
    Malays J Med Sci, 2009 Apr;16(2):33-7.
    PMID: 22589656 MyJurnal
    Theophylline toxicity is a life-threatening toxidrome that can present to an emergency department. To ascertain an immediate provisional diagnosis in toxicology at the emergency department is very challenging, especially when the patient presents with altered mental status, because the clinical features of several toxidromes overlap. We report a case of survival of undiagnosed theophylline toxicity that required intubation for two days in the intensive care unit. This was the first case to have been reported from our department. Accurate diagnosis of a toxidrome by gaining adequate history and conducting a thorough physical examination and early serum toxicology screening, coupled with good knowledge of toxicology, will lead to better patient outcomes.
    Matched MeSH terms: Diagnostic Tests, Routine
  15. Ley B, Thriemer K, Jaswal J, Poirot E, Alam MS, Phru CS, et al.
    Malar J, 2017 08 10;16(1):329.
    PMID: 28797255 DOI: 10.1186/s12936-017-1981-y
    BACKGROUND: Primaquine is essential for the radical cure of vivax malaria, however its broad application is hindered by the risk of drug-induced haemolysis in individuals with glucose-6-phosphate-dehydrogenase (G6PD) deficiency. Rapid diagnostic tests capable of diagnosing G6PD deficiency are now available, but these are not used widely.

    METHODS: A series of qualitative interviews were conducted with policy makers and healthcare providers in four vivax-endemic countries. Routine G6PD testing is not part of current policy in Bangladesh, Cambodia or China, but it is in Malaysia. The interviews were analysed with regard to respondents perceptions of vivax malaria, -primaquine based treatment for malaria and the complexities of G6PD deficiency.

    RESULTS: Three barriers to the roll-out of routine G6PD testing were identified in all sites: (a) a perceived low risk of drug-induced haemolysis; (b) the perception that vivax malaria was benign and accordingly treatment with primaquine was not regarded as a priority; and, (c) the additional costs of introducing routine testing. In Malaysia, respondents considered the current test and treat algorithm suitable and the need for an alternative approach was only considered relevant in highly mobile and hard to reach populations.

    CONCLUSIONS: Greater efforts are needed to increase awareness of the benefits of the radical cure of Plasmodium vivax and this should be supported by economic analyses exploring the cost effectiveness of routine G6PD testing.

    Matched MeSH terms: Diagnostic Tests, Routine/psychology; Diagnostic Tests, Routine/standards*
  16. Farook TH, Jamayet NB, Abdullah JY, Alam MK
    Pain Res Manag, 2021;2021:6659133.
    PMID: 33986900 DOI: 10.1155/2021/6659133
    Purpose: The study explored the clinical influence, effectiveness, limitations, and human comparison outcomes of machine learning in diagnosing (1) dental diseases, (2) periodontal diseases, (3) trauma and neuralgias, (4) cysts and tumors, (5) glandular disorders, and (6) bone and temporomandibular joint as possible causes of dental and orofacial pain.

    Method: Scopus, PubMed, and Web of Science (all databases) were searched by 2 reviewers until 29th October 2020. Articles were screened and narratively synthesized according to PRISMA-DTA guidelines based on predefined eligibility criteria. Articles that made direct reference test comparisons to human clinicians were evaluated using the MI-CLAIM checklist. The risk of bias was assessed by JBI-DTA critical appraisal, and certainty of the evidence was evaluated using the GRADE approach. Information regarding the quantification method of dental pain and disease, the conditional characteristics of both training and test data cohort in the machine learning, diagnostic outcomes, and diagnostic test comparisons with clinicians, where applicable, were extracted.

    Results: 34 eligible articles were found for data synthesis, of which 8 articles made direct reference comparisons to human clinicians. 7 papers scored over 13 (out of the evaluated 15 points) in the MI-CLAIM approach with all papers scoring 5+ (out of 7) in JBI-DTA appraisals. GRADE approach revealed serious risks of bias and inconsistencies with most studies containing more positive cases than their true prevalence in order to facilitate machine learning. Patient-perceived symptoms and clinical history were generally found to be less reliable than radiographs or histology for training accurate machine learning models. A low agreement level between clinicians training the models was suggested to have a negative impact on the prediction accuracy. Reference comparisons found nonspecialized clinicians with less than 3 years of experience to be disadvantaged against trained models.

    Conclusion: Machine learning in dental and orofacial healthcare has shown respectable results in diagnosing diseases with symptomatic pain and with improved future iterations and can be used as a diagnostic aid in the clinics. The current review did not internally analyze the machine learning models and their respective algorithms, nor consider the confounding variables and factors responsible for shaping the orofacial disorders responsible for eliciting pain.

    Matched MeSH terms: Diagnostic Tests, Routine/instrumentation; Diagnostic Tests, Routine/statistics & numerical data*
  17. Won KY, Gass K, Biamonte M, Dagne DA, Ducker C, Hanna C, et al.
    PLoS Negl Trop Dis, 2021 11;15(11):e0009968.
    PMID: 34780503 DOI: 10.1371/journal.pntd.0009968
    As lymphatic filariasis (LF) programs move closer to established targets for validation elimination of LF as a public health problem, diagnostic tools capable of supporting the needs of the programs are critical for success. Known limitations of existing diagnostic tools make it challenging to have confidence that program endpoints have been achieved. In 2019, the World Health Organization (WHO) established a Diagnostic Technical Advisory Group (DTAG) for Neglected Tropical Diseases tasked with prioritizing diagnostic needs including defining use-cases and target product profiles (TPPs) for needed tools. Subsequently, disease-specific DTAG subgroups, including one focused on LF, were established to develop TPPs and use-case analyses to be used by product developers. Here, we describe the development of two priority TPPs for LF diagnostics needed for making decisions for stopping mass drug administration (MDA) of a triple drug regimen and surveillance. Utilizing the WHO core TPP development process as the framework, the LF subgroup convened to discuss and determine attributes required for each use case. TPPs considered the following parameters: product use, design, performance, product configuration and cost, and access and equity. Version 1.0 TPPs for two use cases were published by WHO on 12 March 2021 within the WHO Global Observatory on Health Research and Development. A common TPP characteristic that emerged in both use cases was the need to identify new biomarkers that would allow for greater precision in program delivery. As LF diagnostic tests are rarely used for individual clinical diagnosis, it became apparent that reliance on population-based surveys for decision making requires consideration of test performance in the context of such surveys. In low prevalence settings, the number of false positive test results may lead to unnecessary continuation or resumption of MDA, thus wasting valuable resources and time. Therefore, highly specific diagnostic tools are paramount when used to measure low thresholds. The TPP process brought to the forefront the importance of linking use case, program platform and diagnostic performance characteristics when defining required criteria for diagnostic tools.
    Matched MeSH terms: Diagnostic Tests, Routine/methods; Diagnostic Tests, Routine/standards*
  18. Mahendran P, Liew JWK, Amir A, Ching XT, Lau YL
    Malar J, 2020 Jul 10;19(1):241.
    PMID: 32650774 DOI: 10.1186/s12936-020-03314-5
    BACKGROUND: Plasmodium knowlesi and Plasmodium vivax are the predominant Plasmodium species that cause malaria in Malaysia and play a role in asymptomatic malaria disease transmission in Malaysia. The diagnostic tools available to diagnose malaria, such as microscopy and rapid diagnostic test (RDT), are less sensitive at detecting lower parasite density. Droplet digital polymerase chain reaction (ddPCR), which has been shown to have higher sensitivity at diagnosing malaria, allows direct quantification without the need for a standard curve. The aim of this study is to develop and use a duplex ddPCR assay for the detection of P. knowlesi and P. vivax, and compare this method to nested PCR and qPCR.

    METHODS: The concordance rate, sensitivity and specificity of the duplex ddPCR assay were determined and compared to nested PCR and duplex qPCR.

    RESULTS: The duplex ddPCR assay had higher analytical sensitivity (P. vivax = 10 copies/µL and P. knowlesi = 0.01 copies/µL) compared to qPCR (P. vivax = 100 copies/µL and P. knowlesi = 10 copies/µL). Moreover, the ddPCR assay had acceptable clinical sensitivity (P. vivax = 80% and P. knowlesi = 90%) and clinical specificity (P. vivax = 87.84% and P. knowlesi = 81.08%) when compared to nested PCR. Both ddPCR and qPCR detected more double infections in the samples.

    CONCLUSIONS: Overall, the ddPCR assay demonstrated acceptable efficiency in detection of P. knowlesi and P. vivax, and was more sensitive than nested PCR in detecting mixed infections. However, the duplex ddPCR assay still needs optimization to improve the assay's clinical sensitivity and specificity.

    Matched MeSH terms: Diagnostic Tests, Routine/instrumentation; Diagnostic Tests, Routine/methods*
  19. Ismail A, Teh LK, Ngeow YF, Norazmi MN, Zainul ZF, Tang TH, et al.
    Genome Announc, 2013;1(3).
    PMID: 23788553 DOI: 10.1128/genomeA.00397-13
    We report the annotated genome sequence of a clinical isolate, Mycobacterium tuberculosis strain PR05, which was isolated from the human cerebrospinal fluid of a patient diagnosed with tuberculosis.
    Matched MeSH terms: Diagnostic Tests, Routine
  20. Kohno A, Nik Farid ND, Musa G, Abdul Aziz N, Nakayama T, Dahlui M
    BMJ Open, 2016;6(3):e010668.
    PMID: 27006344 DOI: 10.1136/bmjopen-2015-010668
    While living overseas in another culture, retirees need to adapt to a new environment but often this causes difficulties, particularly among those elderly who require healthcare services. This study examines factors affecting healthcare service utilisation among Japanese retirees in Malaysia.
    Matched MeSH terms: Diagnostic Tests, Routine
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