Displaying publications 41 - 60 of 137 in total

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  1. Rajahram GS, Barber BE, William T, Menon J, Anstey NM, Yeo TW
    Malar J, 2012;11:284.
    PMID: 22905799 DOI: 10.1186/1475-2875-11-284
    The simian parasite Plasmodium knowlesi is recognized as a common cause of severe and fatal human malaria in Sabah, Malaysia, but is morphologically indistinguishable from and still commonly reported as Plasmodium malariae, despite the paucity of this species in Sabah. Since December 2008 Sabah Department of Health has recommended intravenous artesunate and referral to a general hospital for all severe malaria cases of any species. This paper reviews all malaria deaths in Sabah subsequent to the introduction of these measures. Reporting of malaria deaths in Malaysia is mandatory.
    Matched MeSH terms: Diagnostic Errors*
  2. Barber BE, William T, Grigg MJ, Yeo TW, Anstey NM
    Malar J, 2013;12:8.
    PMID: 23294844 DOI: 10.1186/1475-2875-12-8
    In areas co-endemic for multiple Plasmodium species, correct diagnosis is crucial for appropriate treatment and surveillance. Species misidentification by microscopy has been reported in areas co-endemic for vivax and falciparum malaria, and may be more frequent in regions where Plasmodium knowlesi also commonly occurs.
    Matched MeSH terms: Diagnostic Errors/statistics & numerical data
  3. Khoo SP, Shanmuhasuntharam P, Mahadzir WM, Tay KK, Latif A, Nair S
    Asia Pac J Public Health, 1998;10(1):49-51.
    PMID: 10050209 DOI: 10.1177/101053959801000111
    The delay in the diagnosis of oral cancer has been variously reported as being contributed by the clinicians, patients or both. The purpose of this study was to evaluate the referral pattern of 65 patients eventually diagnosed as having oral squamous cell carcinoma. The results showed that 50% of the patients delayed seeking professional help for more than 3 months after being aware of the lesion. The majority of the patients consulted medical practitioners as the first source of help. The mean clinicians' and patients' delay were 10.3 weeks and 28.9 weeks respectively. Dental practitioners showed a tendency to refer more advanced lesions compared to the medical practitioners. The findings raise the concern that lack of patients' awareness, misdiagnosis by clinicians and late detection by dental practitioners prevail thus calling for urgent measures towards early detection of the disease.
    Matched MeSH terms: Diagnostic Errors/statistics & numerical data
  4. Shrestha N, Adhikari M, Pant V, Baral S, Shrestha A, Basnyat B, et al.
    BMC Infect Dis, 2019 Feb 19;19(1):176.
    PMID: 30782129 DOI: 10.1186/s12879-019-3793-x
    BACKGROUND: Melioidosis is a life-threatening infectious disease that is caused by gram negative bacteria Burkholderia pseudomallei. This bacteria occurs as an environmental saprophyte typically in endemic regions of south-east Asia and northern Australia. Therefore, patients with melioidosis are at high risk of being misdiagnosed and/or under-diagnosed in South Asia.

    CASE PRESENTATION: Here, we report two cases of melioidosis from Nepal. Both of them were diabetic male who presented themselves with fever, multiple abscesses and developed sepsis. They were treated with multiple antimicrobial agents including antitubercular drugs before being correctly diagnosed as melioidosis. Consistent with this, both patients were farmer by occupation and also reported travelling to Malaysia in the past. The diagnosis was made consequent to the isolation of B. pseudomallei from pus samples. Accordingly, they were managed with intravenous meropenem followed by oral doxycycline and cotrimoxazole.

    CONCLUSION: The case reports raise serious concern over the existing unawareness of melioidosis in Nepal. Both of the cases were left undiagnosed for a long time. Therefore, clinicians need to keep a high index of suspicion while encountering similar cases. Especially diabetic-farmers who present with fever and sepsis and do not respond to antibiotics easily may turn out to be yet another case of melioidosis. Ascertaining the travel history and occupational history is of utmost significance. In addition, the microbiologist should be trained to correctly identify B. pseudomallei as it is often confused for other Burkholderia species. The organism responds only to specific antibiotics; therefore, correct and timely diagnosis becomes crucial for better outcomes.

    Matched MeSH terms: Diagnostic Errors*
  5. Amir A, Cheong FW, De Silva JR, Lau YL
    Parasit Vectors, 2018 01 23;11(1):53.
    PMID: 29361963 DOI: 10.1186/s13071-018-2617-y
    Every year, millions of people are burdened with malaria. An estimated 429,000 casualties were reported in 2015, with the majority made up of children under five years old. Early and accurate diagnosis of malaria is of paramount importance to ensure appropriate administration of treatment. This minimizes the risk of parasite resistance development, reduces drug wastage and unnecessary adverse reaction to antimalarial drugs. Malaria diagnostic tools have expanded beyond the conventional microscopic examination of Giemsa-stained blood films. Contemporary and innovative techniques have emerged, mainly the rapid diagnostic tests (RDT) and other molecular diagnostic methods such as PCR, qPCR and loop-mediated isothermal amplification (LAMP). Even microscopic diagnosis has gone through a paradigm shift with the development of new techniques such as the quantitative buffy coat (QBC) method and the Partec rapid malaria test. This review explores the different diagnostic tools available for childhood malaria, each with their characteristic strengths and limitations. These tools play an important role in making an accurate malaria diagnosis to ensure that the use of anti-malaria are rationalized and that presumptive diagnosis would only be a thing of the past.
    Matched MeSH terms: Diagnostic Errors/prevention & control
  6. Yousuf UA, Yashodhara BM, Thanigasalam T, Ting HS
    BMJ Case Rep, 2014 May 02;2014.
    PMID: 24792021 DOI: 10.1136/bcr-2013-203488
    A 58-year-old man presented with diplopia and partial ptosis for 10 years. It was non-progressive in nature, despite inadequate medical attention the patient received from non-specialists/general practitioners. He did not have fatigability or diurnal variation in weakness and was clinically stable without exacerbations of disease for a decade. He did not have features of Graves's disease, oculopharyngeal dystrophy, cranial nerve paralysis, polymyositis and stroke. The possibility of an atypical presentation of myasthenia gravis (MG) was considered and the patient was evaluated. Ice pack test was negative, Cogan's lid twitch (CLT) test was positive and high titres of acetylcholine receptor antibodies (AChR Ab) suggestive of MG were found. He was treated accordingly with a very good response.
    Matched MeSH terms: Diagnostic Errors*
  7. Cullen JF, Chung HW
    Med J Malaysia, 2010 Dec;65(4):315-6.
    PMID: 21901956
    The diagnosis of optic neuritis and particularly retrobulbar optic neuritis when atypical and not responsive to corticosteroid treatment may need to be revised. This is now especially so in male patients who should be questioned regarding their taking a phosphodiasterase-5 inhibitor in particular Viagra. The case history of such a patient is presented who sustained posterior ischaemic optic neuropathy mistaken for retrobulbar neuritis resulting in bilateral severe visual loss.
    Matched MeSH terms: Diagnostic Errors*
  8. Ong BB, Wong JJ, Hashim J
    Malays J Pathol, 2004 Jun;26(1):35-41.
    PMID: 16190105
    It is well known that diagnostic accuracy of the clinical cause of death has not improved despite advances in diagnostic techniques. We aimed to investigate the accuracy of the clinical cause of death compared with the autopsy cause of death and to see if the Coroner's autopsy can play a role in clinical audit. Our study population consisted of all autopsies where the deceased was hospitalised or resuscitated at the Accident and Emergency Unit of the University of Malaya Medical Centre before death, performed during the period July 1998 to June 2000. The cases were subdivided according to natural and unnatural causes of deaths. Natural deaths were further subdivided in relation to the main organ systems involved while unnatural deaths were subcategorised into trauma, poisoning and burns. The rate of agreement between clinical and autopsy cause of death was further compared with duration of survival in the hospital. Of 132 autopsies included in this study, 115 were Coroner's autopsies. 78% of cases showed agreement between clinical and autopsy cause of death. The agreement rate in Coroner's cases was 80.0%. For natural and unnatural causes, the agreement rate was 56.7% and 84.3% respectively. There were 6 cases (4.5%) where an initial accurate diagnosis might have altered the prognosis of the deceased. In general, the rate of agreement increased with duration of survival of patients. However, this was no longer observed after a survival of more than 28 days. Our findings agree with other similar studies. The diagnostic accuracy of cause of death has not improved despite the modernisation in medical technology. The autopsy still plays an important role in clinical audit and medical education.
    Matched MeSH terms: Diagnostic Errors/statistics & numerical data
  9. Mokhtar Pour A, Masir N, Isa MR
    Malays J Pathol, 2015 Aug;37(2):149-52.
    PMID: 26277673 MyJurnal
    Small cell lung carcinoma (SCLC) commonly metastasizes to distant organs. However, metastasis to the pancreas is not a common event. Moreover, obstructive jaundice as a first clinical presentation of SCLC is extremely unusual. This case reports a 51-year-old male with SCLC, manifesting with obstructive jaundice as the initial clinical presentation. Endoscopic retrograde cholangiopancreatograghy (ERCP) and abdominal computed tomography (CT) scan showed a mass at the head of the pancreas. The patient underwent pancreatoduodenectomy (Whipple procedure). Histopathology revealed a chromogranin- A-positive poorly-differentiated neuroendocrine carcinoma of the pancreas. No imaging study of the lung was performed before surgery. A few months later, a follow-up CT revealed unilateral lung nodules with ipsilateral hilar nodes. A lung biopsy was done and histopathology reported a TTF- 1-positive, chromogranin A-positive, small cell carcinoma of the lung. On review, the pancreatic tumour was also TTF-1-positive. He was then treated with combination chemotherapy (cisplatin, etoposide). These findings highlight that presentation of a mass at the head of pancreas could be a manifestation of a metastatic tumour from elsewhere such as the lung, and thorough investigations should be performed before metastases can be ruled out.
    Matched MeSH terms: Diagnostic Errors*
  10. Choy YS, Bhattacharya K, Balasubramaniam S, Fietz M, Fu A, Inwood A, et al.
    Mol Genet Metab, 2015 May;115(1):41-7.
    PMID: 25892708 DOI: 10.1016/j.ymgme.2015.03.005
    Mucopolysaccharidosis VI (MPS VI, Maroteaux-Lamy syndrome) is caused by deficient activity of the enzyme, N-acetylgalactosamine-4-sulfatase, resulting in impaired degradation of the glycosaminoglycan dermatan sulfate. Patients experience a range of manifestations including joint contractures, short stature, dysostosis multiplex, coarse facial features, decreased pulmonary function, cardiac abnormalities, corneal clouding and shortened life span. Recently, clinicians from institutions in the Asia-Pacific region met to discuss the occurrence and implications of delayed diagnosis and misdiagnosis of MPS VI in the patients they have managed. Eighteen patients (44% female) were diagnosed. The most common sign presented by the patients was bone deformities in 11 patients (65%). Delays to diagnosis occurred due to the lack of or distance to diagnostic facilities for four patients (31%), alternative diagnoses for two patients (15%), and misleading symptoms experienced by two patients (15%). Several patients experienced manifestations that were subtler than would be expected and were subsequently overlooked. Several cases highlighted the unique challenges associated with diagnosing MPS VI from the perspective of different specialties and provide insights into how these patients initially present, which may help to elucidate strategies to improve the diagnosis of MPS VI.
    Matched MeSH terms: Diagnostic Errors/prevention & control
  11. Ousey K, Chadwick P, Jawien A, Tariq G, Nair HKR, Lázaro-Martínez JL, et al.
    J Wound Care, 2018 05 01;27(Sup5):S1-S52.
    PMID: 29738280 DOI: 10.12968/jowc.2018.27.Sup5.S1
    Matched MeSH terms: Diagnostic Errors/prevention & control
  12. Gan CY, Zainuddin Z, Muhamad Noh H, Rahmat R, Mohd Akir F, Mahad NH, et al.
    Forensic Sci Int, 2019 Sep;302:109865.
    PMID: 31279278 DOI: 10.1016/j.forsciint.2019.06.023
    Consumption of curry containing poppy seeds has raised an issue concerning the opiate content in the urine that might exceed the cut-off value (300ng/mL). The main objective of this study was to examine the morphine and codeine contents in the urine of the consumers after partaking poppy seed-enriched curry in. The volunteers were asked to partake: (a) a single meal and their urines were collected within 24h, or (b) Two meals a day for three consecutive days and their urines were collected within 72h. Two different dosages were also tested in this study: (a) low dosage: 1g/100ml curry (containing 138μg of morphine and 66μg of codeine) and (b) high dosage: 5g/100ml curry (containing 690μg of morphine and 330μg of codeine). The subjects were randomised into the groups using the method of stratified randomization with age and gender groups as covariates. A total of 6 subjects was allocated for each group and placebos were used as control. Results showed that all subjects who consumed low dosage of poppy seeds either in single meal or multiple meals experiment were found negative. However, 1 out of 6high dosage subjects was confirmed positive at a period of 3-6h after the consumption of curry in the single meal study. This outlier maybe due to the lack of water consumption after consuming the curry, thus the low volume of urine was collected and the opiate was concentrated in the urine. On the other hand, 5 out of 6high dosage subjects in the multiple meals experiment were found positive. Majority of these subjects were found positive on the second and third day of the experiment after the second curry meal was consumed. The outlier (negative) in this group might be due to the high consumption of water throughout the experiment and the subject's urine volumes and frequency of urine collection were much higher compared to other subjects. From the result of this study, it can be concluded that partaking high dosages of poppy seed in curry could give a positive response (>300ng/ml+uncertainty of measurement) in the urine, and the water consumption after partaking curry has significant influence for the opiate contents in the urine.
    Matched MeSH terms: Diagnostic Errors/prevention & control
  13. Khoo EM, Lee WK, Sararaks S, Abdul Samad A, Liew SM, Cheong AT, et al.
    BMC Fam Pract, 2012 Dec 26;13:127.
    PMID: 23267547 DOI: 10.1186/1471-2296-13-127
    BACKGROUND: Patient safety is vital in patient care. There is a lack of studies on medical errors in primary care settings. The aim of the study is to determine the extent of diagnostic inaccuracies and management errors in public funded primary care clinics.

    METHODS: This was a cross-sectional study conducted in twelve public funded primary care clinics in Malaysia. A total of 1753 medical records were randomly selected in 12 primary care clinics in 2007 and were reviewed by trained family physicians for diagnostic, management and documentation errors, potential errors causing serious harm and likelihood of preventability of such errors.

    RESULTS: The majority of patient encounters (81%) were with medical assistants. Diagnostic errors were present in 3.6% (95% CI: 2.2, 5.0) of medical records and management errors in 53.2% (95% CI: 46.3, 60.2). For management errors, medication errors were present in 41.1% (95% CI: 35.8, 46.4) of records, investigation errors in 21.7% (95% CI: 16.5, 26.8) and decision making errors in 14.5% (95% CI: 10.8, 18.2). A total of 39.9% (95% CI: 33.1, 46.7) of these errors had the potential to cause serious harm. Problems of documentation including illegible handwriting were found in 98.0% (95% CI: 97.0, 99.1) of records. Nearly all errors (93.5%) detected were considered preventable.

    CONCLUSIONS: The occurrence of medical errors was high in primary care clinics particularly with documentation and medication errors. Nearly all were preventable. Remedial intervention addressing completeness of documentation and prescriptions are likely to yield reduction of errors.

    Matched MeSH terms: Diagnostic Errors/statistics & numerical data*
  14. F AT, Mohammed F
    J Clin Diagn Res, 2014 Jul;8(7):ZD03-4.
    PMID: 25177646 DOI: 10.7860/JCDR/2014/8671.4546
    Susuk or charm needles are a facial cum body art widely practiced among women of Malaysia, Brunei, Singapore, Thailand and Indonesia. These are small, needle-shaped metallic talismans inserted subcutaneously in different parts of the body. The concealed art of susuk was "exposed" by routine radiographic examination in the oral and maxillofacial region. This paper reports two such cases of unusual incidental radiographic finding in dental radiographs which were taken on a routine basis as part of the diagnostic work up. This article will also primarily enlighten the importance of radiographs in detecting such charm needles as the wearer keeps the body art a "hidden secret" thereby avoiding misdiagnosis.
    Matched MeSH terms: Diagnostic Errors
  15. Khoo SB
    Malays Fam Physician, 2010;5(3):139-44.
    PMID: 25606206 MyJurnal
    This case history illustrates the real life experience and dilemma of an 80-year-old woman in pursuit of medical care for her left shoulder pain. Points for discussion range from clinical features of Pancoast tumor, importance of pain management, good principles of Family Medicine and Palliative care to ethical issues of conspiracy of silence, limited treatment plan and palliative versus curative radiotherapy treatment without a known biopsy report. This paper provides opportunity for analysis of a real complex clinical situation, application of medical knowledge to problem solving in clinical practice and relevant topics for discussions. (For anonymity sake, the names of patient, doctors, general and private hospitals are not mentioned. The aim of this paper is solely for continuous medical education without any intention to ridicule any party).
    Matched MeSH terms: Diagnostic Errors
  16. Cheong AT, Khoo EM
    Malays Fam Physician, 2009;4(1):33-6.
    PMID: 25606157 MyJurnal
    This case illustrates an 80-year-old lady who presented with acute low back pain and finally succumbed from complications of osteoporotic vertebral fracture. Among the contributing factors are delayed diagnosis and a lack of continuity of care. It reminds the practitioners of the importance to look out for red flag symptoms and to have a high index of suspicion for vertebral fracture in high risk patients presenting with low back pain.
    Study site: Accident and Emergency Unit, University Malaya Medical Centre (UMMC), Kuala Lumpur, Malaysia
    Matched MeSH terms: Diagnostic Errors
  17. Tan GC, Yap YP, Shiran MS, Sabariah AR, Pathmanathan R
    BMJ Case Rep, 2009;2009.
    PMID: 21686408 DOI: 10.1136/bcr.11.2008.1221
    Mycobacterial spindle cell pseudotumour (MSCP) has been reported in various sites, including skin, lymph nodes, bone marrow, lung and spleen. Cutaneous lesions are extremely rare and the differential diagnoses include various spindle cell lesions. Literature review shows that this lesion has preponderance for upper limb involvement and occurs largely in immunosuppressed individuals. We report a case of MSCP of the skin due to atypical mycobacterium and discuss the risk of misdiagnosis as a sarcoma.
    Matched MeSH terms: Diagnostic Errors
  18. Ong BB, Looi LM
    Malays J Pathol, 2001 Jun;23(1):1-7.
    PMID: 16329541
    Medico-legal problems experienced by histopathologists differ from those of other clinicians as they are rarely in direct contact with patients. Nevertheless, the pathologist owes a duty of care to the patient and is liable for medical negligence. In the absence of local guidelines, it is prudent to follow guidelines published by learned Colleges elsewhere. This is also true when delegating duties to non-pathologists, technical and other support staff. Errors in diagnosis and documentation pose the most common problems in histopathology. In this, liability also depends on many factors including the provision of adequate clinical information by clinicians and competence of laboratory staff. Clinicopathological discussions, participation in quality assurance programmes and adherence to standard operating procedures are important audit activities to minimize and detect errors as well as prevent grievous outcome to patients. Issues also arise over the retention of specimens and reports. In general, wet, formalin-fixed tissues should be kept until histopathological assessment is finalized and preferably after clinicopathological sessions, and even longer if there is potential litigation. Reports should be archival. Paraffin blocks should be kept for at least the lifetime of the patient, and histology slides for at least 10 years, to facilitate review and reassessment. Despite adverse publicity in the foreign press over the use of human organs and tissues for research and education, it is accepted that processed tissues can be used for research and educational purposes provided the patient's identity is kept confidential. Nevertheless, it would be prudent to revise consent forms for surgery and autopsies to include the possibility that tissues removed can be stored or used for research and education. Good medical practice in pathology encourages a willingness to consult colleagues when in doubt, but advises that the treating clinician be informed if histopathological material is referred away for a second opinion. The Telemedicine Act of Malaysia (1997) requires practitioners outside Malaysia providing diagnosis through telepathology to hold a certificate to practice telemedicine issued by the Malaysian Medical Council. It is likely that the medico-legal scene in histopathology will change in the coming years with the advent of other new ancillary investigative techniques.
    Matched MeSH terms: Diagnostic Errors
  19. Maung K, Ohnmar H, Than W, Ramli M, Najwa Hanim MR, Ali Sabri R, et al.
    Clin Ter, 2015;166(2):87-90.
    PMID: 25945438 DOI: 10.7417/CT.2015.1823
    OBJECTIVE: The purposes of this study were to investigate the documentation of the DSM-IV-TR- Criteria A in diagnoses of schizophrenia and to identify the symptoms associated with over diagnosis of schizophrenia.

    METHOD: This study involved a retrospective review and analysis of data from case notes.

    RESULTS: Data of 107 newly diagnosed patients with schizophrenia were keyed in and analyzed using SPSS v 19. The cases were then evaluated for the use of the DSM-IV-TR- Criteria A. Over diagnosis was noted in 37.39% of the patients. Disorganised behaviour (12.5%), affective flattening (12.5%), hallucination (16%) and non-bizarre delusion (18.3%) significantly contributed to the over-diagnosis of schizophrenia. Symptoms such as non-bizarre delusion and hallucination were the most commonly used in over-diagnosing schizophrenia and were statistically significant with p ≤0.05.

    CONCLUSIONS: There was a significant lack of DSM-IV-TR Criteria A among the data documented to diagnose schizophrenia and non-bizarre delusion and hallucination were the most commonly used in over-diagnosing schizophrenia. This key problem needs to be addressed. The reliability of a diagnosis is indispensable and achievable with the proper clinical application of DSM-IV-TR Criteria A. The DSM-IV-TR Criteria have been perceived to be useful and reliable and is most widely used throughout the world.
    Matched MeSH terms: Diagnostic Errors
  20. Ambu VK, Narayanan P, Ratnasingam V
    J Laryngol Otol, 2001 Sep;115(9):740-2.
    PMID: 11564306
    Laryngeal foreign bodies, especially in children, mostly present as an acute emergency. Few cases of long-standing laryngeal foreign bodies have been reported in the literature. This case illustrates one of the sequelae of a neglected laryngeal foreign body, resulting in significant granulation tissue formation in the larynx, and its management.
    Matched MeSH terms: Diagnostic Errors
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