Displaying publications 21 - 40 of 43 in total

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  1. Salari N, Shohaimi S, Najafi F, Nallappan M, Karishnarajah I
    PLoS One, 2014;9(11):e112987.
    PMID: 25419659 DOI: 10.1371/journal.pone.0112987
    Among numerous artificial intelligence approaches, k-Nearest Neighbor algorithms, genetic algorithms, and artificial neural networks are considered as the most common and effective methods in classification problems in numerous studies. In the present study, the results of the implementation of a novel hybrid feature selection-classification model using the above mentioned methods are presented. The purpose is benefitting from the synergies obtained from combining these technologies for the development of classification models. Such a combination creates an opportunity to invest in the strength of each algorithm, and is an approach to make up for their deficiencies. To develop proposed model, with the aim of obtaining the best array of features, first, feature ranking techniques such as the Fisher's discriminant ratio and class separability criteria were used to prioritize features. Second, the obtained results that included arrays of the top-ranked features were used as the initial population of a genetic algorithm to produce optimum arrays of features. Third, using a modified k-Nearest Neighbor method as well as an improved method of backpropagation neural networks, the classification process was advanced based on optimum arrays of the features selected by genetic algorithms. The performance of the proposed model was compared with thirteen well-known classification models based on seven datasets. Furthermore, the statistical analysis was performed using the Friedman test followed by post-hoc tests. The experimental findings indicated that the novel proposed hybrid model resulted in significantly better classification performance compared with all 13 classification methods. Finally, the performance results of the proposed model was benchmarked against the best ones reported as the state-of-the-art classifiers in terms of classification accuracy for the same data sets. The substantial findings of the comprehensive comparative study revealed that performance of the proposed model in terms of classification accuracy is desirable, promising, and competitive to the existing state-of-the-art classification models.
    Matched MeSH terms: Cardiology/classification; Cardiology/methods
  2. Murtaza G, Khan MY, Azhar S, Khan SA, Khan TM
    Saudi Pharm J, 2016 Mar;24(2):220-5.
    PMID: 27013915 DOI: 10.1016/j.jsps.2015.03.009
    Drug-drug interactions (DDIs) may result in the alteration of therapeutic response. Sometimes they may increase the untoward effects of many drugs. Hospitalized cardiac patients need more attention regarding drug-drug interactions due to complexity of their disease and therapeutic regimen. This research was performed to find out types, prevalence and association between various predictors of potential drug-drug interactions (pDDIs) in the Department of Cardiology and to report common interactions. This study was performed in the hospitalized cardiac patients at Ayub Teaching Hospital, Abbottabad, Pakistan. Patient charts of 2342 patients were assessed for pDDIs using Micromedex® Drug Information. Logistic regression was applied to find predictors of pDDIs. The main outcome measure in the study was the association of the potential drug-drug interactions with various factors such as age, gender, polypharmacy, and hospital stay of the patients. We identified 53 interacting-combinations that were present in total 5109 pDDIs with median number of 02 pDDIs per patient. Overall, 91.6% patients had at least one pDDI; 86.3% were having at least one major pDDI, and 84.5% patients had at least one moderate pDDI. Among 5109 identified pDDIs, most were of moderate (55%) or major severity (45%); established (24.2%), theoretical (18.8%) or probable (57%) type of scientific evidence. Top 10 common pDDIs included 3 major and 7 moderate interactions. Results obtained by multivariate logistic regression revealed a significant association of the occurrence of pDDIs in patient with age of 60 years or more (p 
    Matched MeSH terms: Cardiology
  3. Lubis LE, Bayuadi I, Pawiro SA, Ng KH, Bosmans H, Soejoko DS
    Phys Med, 2015 Nov;31(7):659-68.
    PMID: 26050060 DOI: 10.1016/j.ejmp.2015.05.011
    The purpose of this study is to quantify the quality of the available imaging modes for various iodine-based contrast agent concentration in paediatric cardiology. The figure of merit (FOM) was defined as the squared signal to noise ratio divided by a patient dose related parameter. An in house constructed phantom simulated a series of vessel segments with iodine concentrations from 10% or 30 mg/cc to 16% or 48 mg/cc of iodine in a blood plasma solution, all within the dimensional constraints of a paediatric patient. The phantom also used test inserts of tin (Sn). Measurements of Entrance Surface Air Kerma (ESAK) and exit dose rate were performed along with calculations of the signal-to-noise ratio (SNR) of all the objects. A first result showed that it was favourable to employ low dose fluoroscopy mode and lower frame rate modes in cine acquisition if dynamic information is not critical. Normal fluoroscopy dose mode provided a considerably higher dose level (in comparison to low dose mode) with only a slight improvement in SNR. Higher frame rate cine modes should be used however when the clinical situation dictates so. This work also found that tin should not be intended as iodine replacement material for research purposes due to the mismatching SNR, particularly on small vessel sizes.
    Matched MeSH terms: Cardiology
  4. Aniza, I., Syafrawati, Saperi, S., Zafar, M., Amrizal, M.N., Ika Fazura, M.N.
    MyJurnal
    Background: Cardiovascular disease is the number one cause of death globally and is projected to remain the leading cause of death. If the trend is allowed to continue, by 2015 an estimated 20 million people will die from cardiovascular disease (mainly because of myocardial infarction and strokes). The number of cardiovascular disease cases in Malaysia has increased to 14% in five years from 96,000 cases in 1995 to 110,000 cases in 2000.

    Methods: The cost to treat patients admitted to Universiti Kebangsaan Malaysia Medical Center (UKMMC) Malaysia, diagnosed with Acute Uncomplicated ST Elevated Myocardial Infarction (STEMI) was calculated by using two different methodologies, namely step down costing methodology and activity based costing using clinical pathway.

    Results: Cost for each stay per day at the cardiology ward using the step down methodology is RM596.42. The treatment cost is estimated from RM1, 789.26 to RM 4,771.36. The average cost per episode for STEMI care with the average length of stay for 5.6 days is RM3, 340(SD ±596.42. The cost of coronary PCI procedure in step costing is RM 13,950.00. Hence, the total cost incurs for STEMI with PCI is RM 17,290.00(SD ±596.42) by using step down method. (an average cost per episode is RM3,340, plus the cost of coronary procedure of RM 13,950.00 . However by using the ABC the cost of STEMI (PCI) with an average length of stay for 5.6 days is RM 20,431.39. The study showed the ABC method was higher by 15.3% than the step down costing.

    Conclusion: The cost in managing STEMI (PCI) with the average length of stay of 5.6 days was calculated by using two different methodologies, namely step down costing methodology and activity based costing. Cost of treatment calculated by using activity based costing are higher because all resources used are incorporated in detail. The ABC method was higher by 15.3% than the step down costing. The difference is within 80-20 rules and the biggest percentage of cost in both methodsis procedure or PCI cost.
    Matched MeSH terms: Cardiology
  5. Chanana BB, Chandra P, Cheng JJ, Dick R, Gwon HC, Hiremath MS, et al.
    Int J Cardiol, 2016 Nov 01;222:832-40.
    PMID: 27522385 DOI: 10.1016/j.ijcard.2016.07.273
    BACKGROUND & AIMS: Although Absorb Bioresorbable Vascular Scaffolds (A-BVS) are routinely used in the Asia-Pacific, there is little information on patient selection or deployment technique here. This document investigates the experiences of leading interventional cardiologists from the Asia-Pacific region with a focus on patient characteristics, deployment techniques and management.

    METHODS AND RESULTS: A detailed questionnaire was distributed to 28 highly-experienced interventional cardiologists ('Authors') from 13 Asia-Pacific countries. The results were discussed at a meeting on patient selection, technical consideration, deployment practices and patient management. Potential patient benefits of Absorb compared to metallic DES, the learning curve for patient selection and preparation, device deployment, and subsequent patient management approaches are presented.

    CONCLUSIONS: Current practices are derived from guidelines optimized for European patients. Differences in approach exist in the Asia-Pacific context, including limited access to imaging and frequency of occurrence of complex lesions. Nevertheless, the use of the Absorb BVS ('Absorb') in certain Asia-Pacific countries has flourished and practices here are continuing to mature.

    Matched MeSH terms: Cardiology*; Cardiologists/statistics & numerical data*
  6. Xie CB, Chan MY, Teo SG, Low AF, Tan HC, Lee CH
    Singapore Med J, 2011 Nov;52(11):835-9.
    PMID: 22173254
    There is a paucity of data on acute myocardial infarction (AMI) in young Asian women and of comparative data among various ethnic groups with respect to risk factor profile and clinical outcomes. We present a comprehensive overview of the clinical characteristics of young Asian women with AMI and a comparative analysis among Chinese, Malay and Indian women in a multi-ethnic Asian country.
    Matched MeSH terms: Cardiology/methods
  7. Ganapathi P, Nurul Yaqeen ME, Zamzurina AB
    Med J Malaysia, 2020 03;75(2):184-185.
    PMID: 32281607
    'Scimitar' syndrome in adulthood is usually asymptomatic. Significant structural abnormalities symptoms usually manifest early during infancy or young childhood with features of congestive heart failure from significant shunting of the anomalous pulmonary venous drainage. Diagnosis of 'Scimitar' Syndrome in adults is rare and usually an incidental finding on chest radiograph. Here, we report a case of an adult who presented with symptoms in her 40's. This syndrome has never been reported nor discussed in Malaysia. This is the first case report of 'Scimitar' Syndrome in Malaysian literature. The diagnostic dilemma, medical management, and multi-disciplinary management by cardiology, physiotherapy and pulmonary rehabilitation teams are discussed.
    Matched MeSH terms: Cardiology
  8. Seif AA, Eldamanhoury HM, Darahim K, Boulos DNK, Bahaa N, A M C, et al.
    Adv Physiol Educ, 2021 Mar 01;45(1):109-120.
    PMID: 33544038 DOI: 10.1152/advan.00166.2020
    The electrocardiogram (ECG) is the primary diagnostic tool in cardiovascular diseases. Hence its interpretation is a core competency in medicine, where obvious deficiencies have been reported among learners. The aim of this study was to introduce the fundamentals of ECG knowledge and interpretation through early clinical exposure (ECE) based on a six-step approach for preclinical students (n = 110) and to study its influence on their knowledge and interpretation skills thereafter. The first step employed a blended learning format using didactic lectures on normal and pathological ECGs, each preceded by preinstructional videos. The second step focused on psychomotor skills and utilized laboratory exercises for ECG recording and interpretation. The third step focused on vertical integration, where the clinical relevance of the procedure was established with integrated lectures. The fourth step used the Moodle platform, where opportunities for peer interactions and clarifications by clinical faculty were made available. The fifth step incorporated clinical and diagnostic reasoning through cardiology ward visits and interpretation of patient ECGs. The sixth step was designed for critical thinking and problem solving through case-based discussions with peers and faculty. Students were assessed with multiple-choice questions and objective structured practical examination. Learner perceptions of the approach were evaluated with a feedback questionnaire and focus group discussion. Statistical analysis showed that ECE through a six-step approach significantly enhanced knowledge and interpretation of ECG as evidenced by the pre- and posttest scores. Analysis of the focus group data revealed that learner engagement and skills of critical thinking were enhanced along with diagnostic and clinical reasoning.
    Matched MeSH terms: Cardiology
  9. Elina RA, Husain R, Lang CC
    JUMMEC, 2005;8:9-22.
    Cardiopulmonary exercise testing is a non-invasive physiological test which incorporates the conventional method of exercise stress test with a more advanced breath-to-breath ventilatory analysis. The physiological parameters obtained from the test help to illustrate the cardiovascular, respiratory and metabolic responses to physical exertion. Individual's functional capacity and aerobic fitness is reflected by the value of maximal oxygen consumption (VO2 max) obtained from the cardiopulmonary exercise test. This non-invasive and sophisticated test is regarded as a valuable assessment tool in research and clinical practice. Cardiopulmonary exercise test has been extensively utilized to define the mechanisms of exercise intolerance in various clinical disorders, to evaluate responses to therapy and indicate disease prognosis. Emerging data obtained from the use of the cardiopulmonary exercise testing in the research field, has led to its extensive clinical usage. It is now utilized as an integral part of the patients' clinical evaluation in the field of respiratory and cardiovascular medicine, sports medicine, surgery as well as occupational and rehabilitative medicine. It has a clinical role in assessing patient's functional capacity, monitoring disease progression and response to therapy, predicting prognosis, and perioperative morbidity and mortality, as well as constructing and monitoring training and rehabilitative programs. This article aims to give an overview of the physiological profiles obtained from cardiopulmonary exercise testing, its methodological aspects, as well as its utility in research and clinical practice. KEYWORDS: Cardiopulmonary, exercise, physiology, respiratory medicine, oxygen consumption
    Matched MeSH terms: Cardiology
  10. Abdul Kader MAS
    Med J Malaysia, 2019 08;74(4):355-358.
    PMID: 31424052
    The importance of networking for the management of acute coronary syndrome (ACS) has been emphasised in the 2012 guidelines by the European Society of Cardiology (ESC) on ST-segment elevation myocardial infarction (STEMI). In Penang, the ACS referral network has the Penang General Hospital (PGH), a percutaneous coronary intervention (PCI)- capable hospital, with 14 other hospitals referring their patients for PCI to PGH on a daily basis. In one of its review regarding the referral methodology in the network, PGH's Cardiology centre observed gaps in the referral systems, which was leading to poor quality of referrals. To address these issues, the PGH Cardiology centre developed a standardised protocol and conducted a one-day workshop to educate medical officers about the standardised protocol. This commentary piece is a proof of this concept, and aims to share the experience and provide an overview on the initiatives by the PGH, which has resulted in improved quality of PCI referrals.
    Matched MeSH terms: Cardiology Service, Hospital/organization & administration*
  11. Chee KH
    Singapore Med J, 2013 Jan;54(1):28-31.
    PMID: 23338913
    INTRODUCTION: Peripartum cardiomyopathy (PPCM) is an uncommon form of congestive heart failure, affecting obstetric patients around the time of delivery. The epidemiology of PPCM is infrequently reported. This study was undertaken to define the prevalence, presentation and outcome of PPCM among women giving birth in a teaching hospital in Malaysia.

    METHODS: A retrospective case record analysis was conducted on all patients admitted and diagnosed with PPCM at the University Malaya Medical Centre, Kuala Lumpur, Malaysia, from 1 January 2000 to 31 December 2009. All deliveries were undertaken in the same hospital.

    RESULTS: A total of 12 patients were diagnosed with PPCM during the ten-year study period. The prevalence of PPCM was 2.48 in 100,000 (1 in 40,322) live births. Nine women were diagnosed with PPCM within five months of delivery. Three women had twin pregnancies. There was one death in the group (mortality rate 8.3%). The mean left ventricular ejection fraction at the time of diagnosis was 28.9% ± 8.5% (range 15%-40%). Following the index event, left ventricular function normalised in six of the nine patients (66.7%) who underwent subsequent echocardiography one year later. All patients were treated with standard heart failure therapy. Two patients with normalised left ventricular function had subsequent pregnancies - one pregnancy was terminated at seven weeks and the other patient delivered uneventfully at full term.

    CONCLUSION: PPCM is uncommon. The outcome in our series was favourable, with 66.7% of patients with PPCM recovering their left ventricular function. The mortality rate was 8.3%.
    Matched MeSH terms: Cardiology/methods
  12. Ling PK
    Singapore Med J, 2009 Oct;50(10):e350-2.
    PMID: 19907873
    We report a pulmonary artery (PA) aneurysm associated with severe aortic stenosis and an aortic root dilatation occurring in a 59-year-old woman who presented with dyspnoea and chest pain. PA aneurysms are rare, and there are no definitive guidelines on its management. There are contentious opinions on whether such aneurysms should be managed conservatively or surgically. Our patient had associated aortic stenosis and underwent a successful aortic valve replacement and PA aneurysm repair. This case illustrates that concomitant PA repair with other cardiothoracic surgery can be performed safely, even in patients with moderate surgical risks. We also discuss the natural history, prognosis and management of PA aneurysms.
    Matched MeSH terms: Cardiology/methods
  13. Khan M, Lamelas P, Musa H, Paty J, McCready T, Nieuwlaat R, et al.
    Glob Heart, 2018 Jun;13(2):93-100.e1.
    PMID: 29331282 DOI: 10.1016/j.gheart.2017.11.002
    BACKGROUND: Cardiovascular disease (CVD) is the leading cause of death worldwide. The need to address CVD is greatest in low- and middle-income countries where there is a shortage of trained health workers in CVD detection, prevention, and control.

    OBJECTIVES: Based on the growing evidence that many elements of chronic disease management can be shifted to nonphysician health care workers (NPHW), the HOPE-4 (Heart Outcomes Prevention and Evaluation Program) aimed to develop, test, and implement a training curriculum on CVD prevention and control in Colombia, Malaysia, and low-resource settings in Canada.

    METHODS: Curriculum development followed an iterative and phased approach where evidence-based guidelines, revised blood pressure treatment algorithms, and culturally relevant risk factor counseling were incorporated. Through a pilot-training process with high school students in Canada, the curriculum was further refined. Implementation of the curriculum in Colombia, Malaysia, and Canada occurred through partner organizations as the HOPE-4 team coordinated the program from Hamilton, Ontario, Canada. In addition to content on the burden of disease, cardiovascular system pathophysiology, and CVD risk factors, the curriculum also included evaluations such as module tests, in-class exercises, and observed structured clinical examinations, which were administered by the local partner organizations. These evaluations served as indicators of adequate uptake of curriculum content as well as readiness to work as an NPHW in the field.

    RESULTS: Overall, 51 NPHW successfully completed the training curriculum with an average score of 93.19% on module tests and 84.76% on the observed structured clinical examinations. Since implementation, the curriculum has also been adapted to the World Health Organization's HEARTS Technical Package, which was launched in 2016 to improve management of CVD in primary health care.

    CONCLUSIONS: The robust curriculum development, testing, and implementation process described affirm that NPHW in diverse settings can be trained in implementing measures for CVD prevention and control.

    Matched MeSH terms: Cardiology/education*
  14. Batch Y, Yusof MM, Noah SA
    J Med Internet Res, 2013;15(2):e41.
    PMID: 23470419 DOI: 10.2196/jmir.2353
    Medical blogs have emerged as new media, extending to a wider range of medical audiences, including health professionals and patients to share health-related information. However, extraction of quality health-related information from medical blogs is challenging primarily because these blogs lack systematic methods to organize their posts. Medical blogs can be categorized according to their author into (1) physician-written blogs, (2) nurse-written blogs, and (3) patient-written blogs. This study focuses on how to organize physician-written blog posts that discuss disease-related issues and how to extract quality information from these posts.
    Matched MeSH terms: Cardiology
  15. Yusoff K, Roslawati J, Almashoor SH
    Med J Malaysia, 1992 Sep;47(3):194-9.
    PMID: 1491645
    One hundred consecutive patients attending the UKM (Universiti Kebangsaan Malaysia) Cardiology Clinic completed a questionnaire enquiring about their own assessment of their knowledge about their illness, their awareness of cardiac risk factors and their expectations in their management. Only 11% of our patients had graduated from tertiary education. 59% of our patients were being treated for ischaemic heart disease. Although only 28% of our patients considered having considerable knowledge of their illness, a majority of our patients were aware of cardiac risk factors. This was independent of the formal education achieved. However this awareness did not necessarily result in appropriate behaviour; 32% of patients admitted to smoking despite being aware of the harmful effects of smoking. 74% of our patients expected a cure from their doctors; only 37% of our patients thought they required medication indefinitely. Thus, patients could be made aware of their illness regardless of their formal educational status. However this may not necessarily result in appropriate behaviour. The high expectations which the patients have of their doctors is unrealistic and may be detrimental to appropriate long-term management of their chronic illness.

    Study site: Cardiology Clinic, Pusat Perubatan Universiti Kebangsaan Malaysia (PPUKM)
    Matched MeSH terms: Cardiology Service, Hospital
  16. Sahrol Nizam Abu Bakar, Bachok Norsa’adah, Zurkurnai Yusof, Mansor Yahya, Mohd Nazri Shafei
    MyJurnal
    Introduction: Information on sick leave duration among employees with the first episode of acute coronary syndrome (ACS) throughout the world was limited. The aims of the study were to determine the sick leave duration and its predictive factors among employees diagnosed with the first episode of ACS. Methods: A cohort study was conduct- ed among employees who were admitted to the cardiology centre in the public hospitals in northeastern Malaysia. Data was collected using a designed proforma. The respondents were interviewed, and their medical records were reviewed on the second day of hospital admission. Information on sick leave duration was obtained from sick leave book in the wards. Multiple linear regression analysis was applied to determine the predictive factors for sick leave duration. Results: A total of 78 respondents participated in this study. The mean (SD) age of the respondents was
    47.5 (7.31) year old. The majority were male (92.3%), married (94.9%) and had a low level of education (62.8%). The sick leave duration ranged from 4 to 180 days with the median (IqR) of 35.5 (32) days. The predictive factors for sick leave duration were smoking (Adjusted b=20.1, 95% CI: 7.4, 32.8), not attending cardiac rehabilitation after discharge (Adjusted b=19.9, 95% CI: 6.7, 33.6) and presence of complication during admission (Adjusted b=28.6, 95% CI: 15.1, 42.0). Conclusion: The sick leave duration was relatively low and being a smoker, having a complica- tion during admission and not attending cardiac rehabilitation after discharged predicts a longer sick leave duration.
    Matched MeSH terms: Cardiology
  17. Suriani Yaacob, Noor Hanita Zaini, Khatijah Lim Abdullah, Nor Zehan Ahmad, Vimala Ramoo, Nazar Mohd Zabadi Mohd Azahar, et al.
    MyJurnal
    Introduction: Determination of learning needs is central for holistic patient education, to sustain behavior changes and to control patient’s risk factor. However, patients often sense that their learning needs are unmet and informa- tion provided was too general. Thus, this study aimed to determine the perceived learning needs and their level of importance among Coronary Artery Disease (CAD) patients. Methods: The current investigation is a descriptive, cross-sectional study for which all CAD patients were selected using the cencus method. The data was collected us- ing Cardiac Patients Learning Needs Inventory. The questionnaire was delivered to 140 CAD patients who had their follow-up in a cardiology clinic. The instrument is reliable with a Cronbach’s alpha coefficient of 0.96. The study design followed STROBE cross-sectional design process guideline. Results: Participants’ mean age was 58.96 ± 9.42 years. More than half of the participants were males (62.9%), employed (52.0%) and had attained secondary level education (69.3%). Around two-thirds (60.7%) of the patients perceived to have high learning needs. Gender and highest educational achievement were significantly associated with perceived learning needs. The most significant perceived learning needs were medication information, risk factors for CAD, information on diet, physical activity, anatomy and physiology, and other related information. Conclusion: This study has identified the important domains of learning needs among CAD patients. Findings from the present study will provide important input for future cardi- ac educational strategies to reduce the rate of hospital readmission and death.
    Matched MeSH terms: Cardiology
  18. Tan JWC, Sim D, Ako J, Almahmeed W, Cooper ME, Dalal JJ, et al.
    Eur Cardiol, 2021 Feb;16:e14.
    PMID: 33976709 DOI: 10.15420/ecr.2020.52
    The Asian Pacific Society of Cardiology convened a consensus statement panel for optimising cardiovascular (CV) outcomes in type 2 diabetes, and reviewed the current literature. Relevant articles were appraised using the Grading of Recommendations, Assessment, Development and Evaluation system, and consensus statements were developed in two meetings and were confirmed through online voting. The consensus statements indicated that lifestyle interventions must be emphasised for patients with prediabetes, and optimal glucose control should be encouraged when possible. Sodium-glucose cotransporter 2 inhibitors (SGLT2i) are recommended for patients with chronic kidney disease with adequate renal function, and for patients with heart failure with reduced ejection fraction. In addition to SGLT2i, glucagon-like peptide-1 receptor agonists are recommended for patients at high risk of CV events. A blood pressure target below 140/90 mmHg is generally recommended for patients with type 2 diabetes. Antiplatelet therapy is recommended for secondary prevention in patients with atherosclerotic CV disease.
    Matched MeSH terms: Cardiology
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