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Coronary artery disease in Malaya

Danaraj TJ

Cardiol Prat, 1962 Feb;13:212-24.
PMID: 13883338
Matched MeSH terms: Coronary Artery Disease*
Subclinical Hypothyroidism and Clinical Outcomes After Percutaneous Coronary Intervention: A Meta-Analysis

Ang SP, Chia JE, Jaiswal V, Bandyopadhyay D, Iglesias J, Mohan GVK, et al.

Curr Probl Cardiol, 2023 Aug;48(8):101719.
PMID: 36967069 DOI: 10.1016/j.cpcardiol.2023.101719

While subclinical hypothyroidism (SCH) was reportedly associated with an increased risk of cardiovascular mortality, the relationship between SCH and clinical outcomes of patients undergoing percutaneous coronary intervention (PCI) is uncertain. The aim of this study was to assess the association of SCH and cardiovascular outcomes in patients undergoing PCI. We searched PubMed, Embase, Scopus, and CENTRAL databases from its inception until April 1, 2022 for studies comparing the outcomes between SCH and euthyroid patients undergoing PCI. Outcomes of interest include cardiovascular mortality, all-cause mortality, myocardial infarction (MI), major adverse cardiovascular and cerebrovascular events (MACCE), repeat revascularization and heart failure. Outcomes were pooled using the DerSimonian and Laird random-effects model and reported as risk ratios (RR) and 95% confidence intervals (CI). A total of 7 studies involving 1132 patients with SCH and 11,753 euthyroid patients were included in the analysis. Compared with euthyroid patients, patients with SCH had significantly higher risk of cardiovascular mortality (RR 2.16, 95% CI: 1.38-3.38, P < 0.001), all-cause mortality (RR 1.68, 95% CI: 1.23-2.29, P = 0.001) and repeat revascularization (RR 1.96, 95% CI: 1.08-3.58, P = 0.03). However, there were no differences between both groups in terms of incidence of MI (RR 1.81, 95% CI: 0.97-3.37, P = 0.06), MACCE (RR 2.24, 95% CI: 0.55-9.08, P = 0.26) and heart failure (RR 5.38, 95% CI: 0.28-102.35, P = 0.26). Our analysis suggests among patients undergoing PCI, SCH was associated with increased risk of cardiovascular mortality, all-cause mortality and repeat revascularization compared to euthyroid patients.

Matched MeSH terms: Coronary Artery Disease*
Fulltext Plasma cholesterol and coronary artery disease: how big a heartache?

Lyn PCW

Med J Malaysia, 1987 Mar;42(1):22-30.
PMID: 3323859

Coronary atheroma is the principal cause of ischaemic heart disease. Among the factors considered to predispose to atheroma formation is raised plasma cholesterol and although it is regarded as a minor risk factor by some, others see its contribution as one of major importance. Whichever the view, the debate on plasma cholesterol and coronary heart disease (CHD) has long moved out of the exclusive domain of the scientific journal to the public arena and is reflected in the increasing frequency with which doctors are consulted by patients on the subject. The incidence of CHD in South-East Asian countries is also rising. For the practising clinician, the problem resolves itself into deciding if the evidence incriminating plasma cholesterol as a predisposing factor is strong enough, and if it is, what prophylactic and therapeutic steps are of value in reducing the incidence of CH D. An updated and brief review of lipid metabolism and the relationship of lipids to CHD is now necessary in view of the rapid accumulation of data from recent trials and prospective studies.

Matched MeSH terms: Coronary Artery Disease/blood*; Coronary Artery Disease/prevention & control
Fulltext The prevalence of bleeding after percutaneous coronary interventions: A systematic review and meta-analysis

Heidary Moghadam R, Mohammadi A, Salari N, Ahmed A, Shohaimi S, Mohammadi M

Indian Heart J, 2024;76(1):16-21.
PMID: 38216122 DOI: 10.1016/j.ihj.2024.01.009

BACKGROUND: Bleeding is a common complication associated with percutaneous coronary intervention (PCI). The aim of this study was to determine the prevalence of bleeding after PCI through a systematic review and meta-analysis.
METHODS: The systematic review and meta-analysis covered the period from 1989 to 2023. Multiple databases, including Embase, PubMed, Scopus, Web of Sciences (WoS), MagIran, Scientific Information Database (SID), and Google Scholar, were searched using validated keywords with MeSH and Emtree. The I2 index was used to check for heterogeneity among studies.
RESULTS: The review of 8 studies, with a sample size of 397,298 participants, showed high heterogeneity (I2: 97.8 %). Therefore, the random effects method was used to analyze the results. The prevalence of bleeding after intervention in percutaneous coronary arteries was reported to be 4.4 % (95%CI: 2-9.1).
CONCLUSION: This meta-analysis showed a significant prevalence of bleeding after PCI, highlighting the need for health policymakers to pay more attention to the complications associated with PCI. Interventional cardiologists should consider the effective factors in these bleeding and how to treat and control them due to the importance of this complication.

Matched MeSH terms: Coronary Artery Disease/epidemiology; Coronary Artery Disease/surgery
MortalitY in caRdIAc surgery (MYRIAD): A randomizeD controlled trial of volatile anesthetics. Rationale and design

Landoni G, Lomivorotov V, Pisano A, Nigro Neto C, Benedetto U, Biondi Zoccai G, et al.

Contemp Clin Trials, 2017 08;59:38-43.
PMID: 28533194 DOI: 10.1016/j.cct.2017.05.011

OBJECTIVE: There is initial evidence that the use of volatile anesthetics can reduce the postoperative release of cardiac troponin I, the need for inotropic support, and the number of patients requiring prolonged hospitalization following coronary artery bypass graft (CABG) surgery. Nevertheless, small randomized controlled trials have failed to demonstrate a survival advantage. Thus, whether volatile anesthetics improve the postoperative outcome of cardiac surgical patients remains uncertain. An adequately powered randomized controlled trial appears desirable.
DESIGN: Single blinded, international, multicenter randomized controlled trial with 1:1 allocation ratio.
SETTING: Tertiary and University hospitals.
INTERVENTIONS: Patients (n=10,600) undergoing coronary artery bypass graft will be randomized to receive either volatile anesthetic as part of the anesthetic plan, or total intravenous anesthesia.
MEASUREMENTS AND MAIN RESULTS: The primary end point of the study will be one-year mortality (any cause). Secondary endpoints will be 30-day mortality; 30-day death or non-fatal myocardial infarction (composite endpoint); cardiac mortality at 30day and at one year; incidence of hospital re-admission during the one year follow-up period and duration of intensive care unit, and hospital stay. The sample size is based on the hypothesis that volatile anesthetics will reduce 1-year unadjusted mortality from 3% to 2%, using a two-sided alpha error of 0.05, and a power of 0.9.
CONCLUSIONS: The trial will determine whether the simple intervention of adding a volatile anesthetic, an intervention that can be implemented by all anesthesiologists, can improve one-year survival in patients undergoing coronary artery bypass graft surgery.

Matched MeSH terms: Coronary Artery Disease/mortality; Coronary Artery Disease/surgery*
Frank's sign - A dermatological link to coronary artery disease?

Lee KG

Med J Malaysia, 2017 06;72(3):195-196.
PMID: 28733570

Frank's sign, also known as diagonal earlobe crease (DELC), was observed to be an aural sign of coronary artery disease (CAD). Since then, there has been much interest in examining this unique and controversial association. This report describes a patient who has bilateral complete and deep diagonal ear lobe creases, presented with angina and diagnosed to have coronary artery disease on angiography. The characteristics of the sign and its association with atherosclerotic disease were discussed.

Matched MeSH terms: Coronary Artery Disease/diagnosis; Coronary Artery Disease/pathology*
Automated classification of patients with coronary artery disease using grayscale features from left ventricle echocardiographic images

Acharya UR, Sree SV, Muthu Rama Krishnan M, Krishnananda N, Ranjan S, Umesh P, et al.

Comput Methods Programs Biomed, 2013 Dec;112(3):624-32.
PMID: 23958645 DOI: 10.1016/j.cmpb.2013.07.012

Coronary Artery Disease (CAD), caused by the buildup of plaque on the inside of the coronary arteries, has a high mortality rate. To efficiently detect this condition from echocardiography images, with lesser inter-observer variability and visual interpretation errors, computer based data mining techniques may be exploited. We have developed and presented one such technique in this paper for the classification of normal and CAD affected cases. A multitude of grayscale features (fractal dimension, entropies based on the higher order spectra, features based on image texture and local binary patterns, and wavelet based features) were extracted from echocardiography images belonging to a huge database of 400 normal cases and 400 CAD patients. Only the features that had good discriminating capability were selected using t-test. Several combinations of the resultant significant features were used to evaluate many supervised classifiers to find the combination that presents a good accuracy. We observed that the Gaussian Mixture Model (GMM) classifier trained with a feature subset made up of nine significant features presented the highest accuracy, sensitivity, specificity, and positive predictive value of 100%. We have also developed a novel, highly discriminative HeartIndex, which is a single number that is calculated from the combination of the features, in order to objectively classify the images from either of the two classes. Such an index allows for an easier implementation of the technique for automated CAD detection in the computers in hospitals and clinics.

Matched MeSH terms: Coronary Artery Disease/ultrasonography*
Linear and nonlinear analysis of normal and CAD-affected heart rate signals

Acharya UR, Faust O, Sree V, Swapna G, Martis RJ, Kadri NA, et al.

Comput Methods Programs Biomed, 2014;113(1):55-68.
PMID: 24119391 DOI: 10.1016/j.cmpb.2013.08.017

Coronary artery disease (CAD) is one of the dangerous cardiac disease, often may lead to sudden cardiac death. It is difficult to diagnose CAD by manual inspection of electrocardiogram (ECG) signals. To automate this detection task, in this study, we extracted the heart rate (HR) from the ECG signals and used them as base signal for further analysis. We then analyzed the HR signals of both normal and CAD subjects using (i) time domain, (ii) frequency domain and (iii) nonlinear techniques. The following are the nonlinear methods that were used in this work: Poincare plots, Recurrence Quantification Analysis (RQA) parameters, Shannon entropy, Approximate Entropy (ApEn), Sample Entropy (SampEn), Higher Order Spectra (HOS) methods, Detrended Fluctuation Analysis (DFA), Empirical Mode Decomposition (EMD), Cumulants, and Correlation Dimension. As a result of the analysis, we present unique recurrence, Poincare and HOS plots for normal and CAD subjects. We have also observed significant variations in the range of these features with respect to normal and CAD classes, and have presented the same in this paper. We found that the RQA parameters were higher for CAD subjects indicating more rhythm. Since the activity of CAD subjects is less, similar signal patterns repeat more frequently compared to the normal subjects. The entropy based parameters, ApEn and SampEn, are lower for CAD subjects indicating lower entropy (less activity due to impairment) for CAD. Almost all HOS parameters showed higher values for the CAD group, indicating the presence of higher frequency content in the CAD signals. Thus, our study provides a deep insight into how such nonlinear features could be exploited to effectively and reliably detect the presence of CAD.

Matched MeSH terms: Coronary Artery Disease/physiopathology*
Fulltext Acute coronary syndromes. I. Recent advances in pathogenesis

Yusoff K

Med J Malaysia, 1998 Mar;53(1):117-23; quiz 124.
PMID: 10968152

New knowledge on the pathogenesis of the acute coronary syndromes provides the clinician with a better understanding of these important, often life-threatening, events and opens up new ways of managing them. The identification of the vulnerable plaque whilst important and possible pathologically still requires elaborate and often invasive methods. The central role of inflammation and the platelets in these syndromes has already been translated into practical therapeutics. Identifying and predicting which plaque would rupture and thereby facilitating the formation of an acute obstructive thrombus continue as major challenges to the clinician, but, in the meantime, regressing and stabilising these plaques are achievable goals.

Matched MeSH terms: Coronary Artery Disease/complications*
Incidental congenitally corrected transposition of the great arteries (ccTGA) in an adult with suspected coronary artery disease: review on radiological features and pathophysiology

Sayuti KA, Azizi MYSB

BMJ Case Rep, 2020 Apr 22;13(4).
PMID: 32327461 DOI: 10.1136/bcr-2019-234225

We report a case of a 46-year-old woman who has presented to a peripheral hospital with progressive exertional dyspnoea and chest discomfort. The resting ECG showed features of left-sided ventricular hypertrophy. The initial chest radiograph was reported as cardiomegaly. Initial echocardiography revealed left atrial dilatation and 'left ventricular' hypertrophy with normal ejection fraction. She was treated as possible coronary artery disease and was subsequently referred to our centre for CT coronary angiography. Findings from the CT scan were consistent with congenitally corrected transposition of the great arteries (ccTGA). This report describes the radiological features of ccTGA, its associated cardiovascular anomalies, pathophysiology and potential complications.

Matched MeSH terms: Coronary Artery Disease/complications*
A Meta-Analysis of eHealth Interventions on Ischaemic Heart Disease Health Outcomes

Megat Kamaruddin PSN, Mohammed Nawi A, Abdul Manaf MR, Yaman MN, Abd Malek AM

Glob Heart, 2023;18(1):12.
PMID: 36936248 DOI: 10.5334/gh.1173

BACKGROUND: Electronic Health (eHealth) interventions as a secondary prevention tool to empower patients' health in decision-making and behaviour.
OBJECTIVE: With the growing body of evidence supporting the use of eHealth interventions, the intention is to conduct a meta-analysis on various health outcomes of eHealth interventions among ischaemic heart disease (IHD) patients.
METHODS: Based on PRISMA guidelines, eligible studies were searched through databases of Web of Science, Scopus, PubMed, EBSCOHost, and SAGE (PROSPERO registration CRD42021290091). Inclusion criteria were English language and randomised controlled trials published between 2011 to 2021 exploring health outcomes that empower IHD patients with eHealth interventions. RevMan 5.4 was utilised for meta-analysis, sensitivity analysis, and risk of bias (RoB) assessment while GRADE software for generating findings of physical health outcomes. Non-physical health outcomes were analysed using SWiM (synthesis without meta-analysis) method.
RESULTS: This review included 10 studies, whereby, six studies with 895 participants' data were pooled for physical health outcomes. Overall, the RoB varied significantly across domains, with the majority was low risks, a substantial proportion of high risks and a sizeable proportion of unclear. With GRADE evidence of moderate to high quality, eHealth interventions improved low density lipoprotien (LDL) levels in IHD patients when compared to usual care after 12 months of interventions (SMD -0.26, 95% CI [-0.45, -0.06], I2 = 0%, p = 0.01). Significance appraisal in each domain of the non-physical health outcomes found significant findings for medication adherence, physical activity and dietary behaviour, while half of the non-significant findings were found for other behavioural outcomes, psychological and quality of life.
CONCLUSIONS: Electronic Health interventions are found effective at lowering LDL cholesterol in long-term but benefits remain inconclusive for other physical and non-physical health outcomes for IHD patients. Integrating sustainable patient empowerment strategies with the advancement of eHealth interventions by utilising appropriate frameworks is recommended for future research.

Matched MeSH terms: Coronary Artery Disease*
Factors associated with long-term mechanical ventilation in patients undergoing cardiovascular surgery

Rahimi S, Abdi A, Salari N, Shohaimi S, Naghibeiranvand M

BMC Cardiovasc Disord, 2023 May 25;23(1):276.
PMID: 37231337 DOI: 10.1186/s12872-023-03315-7

BACKGROUND: One of the main therapy for coronary artery disease is surgery. Prolonged mechanical ventilation in patients with cardiac surgery is associated with high mortality. This study aimed to determine the factors related to long-term mechanical ventilation (LTMV) in patients undergoing cardiovascular surgery.
METHODS: The present study was a descriptive-analytical study in which the records of 1361 patients who underwent cardiovascular surgery and were on a mechanical ventilator during 2019-2020 at the Imam Ali Heart Center in Kermanshah city were examined. The data collection tool was a three-part researcher-made questionnaire including demographic characteristics, health records, and clinical variables. Data analysis was done using descriptive and inferential statistical tests and SPSS Version 25 software.
RESULTS: In this study, of the 1361 patients, 953 (70%) were male. The results indicated that 78.6% of patients had short-term mechanical ventilation, and 21.4% had long-term mechanical ventilation. There was a statistically significant relationship between the history of smoking, drug use, and baking bread with the type of mechanical ventilation (P

Matched MeSH terms: Coronary Artery Disease*
Fulltext Smoking and Unstable Plaque in Acute Coronary Syndrome: A Systematic Review of The Role of Matrix Metalloproteinases

Aminuddin A, Cheong SS, Roos NAC, Ugusman A

Int J Med Sci, 2023;20(4):482-492.
PMID: 37057211 DOI: 10.7150/ijms.79889

Smoking is a risk factor of acute coronary syndrome (ACS) that could increase matrix metalloproteinases (MMPs) levels, leading to unstable coronary artery plaque. The current review aimed to identify the relationship between smoking and MMPs in patients with ACS. Literature search was conducted from inception until March 2022 in three online databases. Risk of bias was assessed using the Newcastle-Ottawa Scale. A meta-analysis was performed, and the odds ratio (OR) together with its 95% confidence interval (CI) were determined. A total of 7,843 articles were identified, and only seven studies were included. Four studies investigated the MMP-3 and MMP-9 related genes and found that smokers with certain MMPs genotypes had high risk of ACS. Smoking also increased the MMPs level in patients with ACS compared with non-smokers. Additionally, a meta-analysis of two studies resulted in an increased odd of ACS in smokers with MMP-3 5A allele versus non-smokers with MMP-3 6A6A allele (OR: 15.94, 95% CI: 10.63-23.92; I2 =55%). In conclusion, the current review highlights the role of MMPs in relation to smoking and ACS. The determination of these roles may help in identifying new ACS markers among smokers and the development of drug-targeted treatment.

Matched MeSH terms: Coronary Artery Disease*
Comparison of Cell-based and Nanoparticle-based Therapeutics in Treating Atherosclerosis

Goh WX, Kok YY, Wong CY

Curr Pharm Des, 2023;29(35):2827-2840.
PMID: 37936453 DOI: 10.2174/0113816128272185231024115046

Today, cardiovascular diseases are among the biggest public health threats worldwide. Atherosclerosis, a chronic inflammatory disease with complex aetiology and pathogenesis, predispose many of these conditions, including the high mortality rate-causing ischaemic heart disease and stroke. Nevertheless, despite the alarming prevalence and absolute death rate, established treatments for atherosclerosis are unsatisfactory in terms of efficacy, safety, and patient acceptance. The rapid advancement of technologies in healthcare research has paved new treatment approaches, namely cell-based and nanoparticle-based therapies, to overcome the limitations of conventional therapeutics. This paper examines the different facets of each approach, discusses their principles, strengths, and weaknesses, analyses the main targeted pathways and their contradictions, provides insights on current trends as well as highlights any unique mechanisms taken in recent years to combat the progression of atherosclerosis.

Matched MeSH terms: Coronary Artery Disease*
The role of fractional flow reserve in pre-operative coronary angiography in redefining functional syntax score and cardiac risk in multivessel coronary artery disease

Yew KL

Int J Cardiol, 2014 Dec 20;177(3):e163-4.
PMID: 25217213 DOI: 10.1016/j.ijcard.2014.08.142
Matched MeSH terms: Coronary Artery Disease/physiopathology; Coronary Artery Disease/radiography*; Coronary Artery Disease/surgery
Fulltext A young patient with history of Kawasaki disease presenting with triple vessel disease

Lim AL, Lam HY, Kareem BA, Kamarulzaman MH

Med J Malaysia, 2012 Apr;67(2):219-21.
PMID: 22822650 MyJurnal

Kawasaki disease is primarily a condition that affects young children and it is associated with cardiac morbidity and mortality. This disease has been known to cause coronary artery aneurysms which occurs as a sequelae of vasculitis. The progression of triple vessel disease in adult which results from cardiac complications from Kawasaki disease is rare. We report a case of a young man with history of Kawasaki disease at infancy presenting with triple vessel disease requiring cardiac bypass surgery at the age of 20 years old.

Matched MeSH terms: Coronary Artery Disease/diagnosis; Coronary Artery Disease/etiology*; Coronary Artery Disease/surgery*
The effect of mobile messaging apps on cardiac patient knowledge of coronary artery disease risk factors and adherence to a healthy lifestyle

Tang YH, Chong MC, Chua YP, Chui PL, Tang LY, Rahmat N

J Clin Nurs, 2018 Dec;27(23-24):4311-4320.
PMID: 29777560 DOI: 10.1111/jocn.14538

AIMS: To determine the effect mobile messaging apps on coronary artery disease patient knowledge of and adherence to a healthy lifestyle.
BACKGROUND: Due to the increasing incidence of coronary artery disease in recent years, interventions targeting coronary artery disease risk factors are urgent public priorities. The use of mobile technology in healthcare services and medical education is relatively new with promising future prospects.
DESIGN: This study used a quasiexperimental design that included pre- and posttest for intervention and control groups.
METHODS: The study was conducted from January-April 2017 with both intervention and control groups, in a teaching hospital in Klang Valley. Convenience sampling was used with inclusive criteria in choosing the 94 patients with coronary artery disease (intervention group: 47 patients; control group: 47 patients). The pretest was conducted as a baseline measurement for both groups before they were given standard care from a hospital. However, only the intervention group was given a daily information update via WhatsApp for 1 month. After 1 month, both groups were assessed with a posttest.
RESULTS: The split-plot ANOVA analysis indicates that there is a significant and positive effect of the intervention on coronary artery disease patients' knowledge on coronary artery disease risk factors [F(1, 92) = 168.15, p

Matched MeSH terms: Coronary Artery Disease/etiology; Coronary Artery Disease/prevention & control; Coronary Artery Disease/psychology*
Fulltext Superdominant right coronary artery with absent left circumflex artery

Majid Y, Warade M, Sinha J, Kalyanpur A, Gupta T

Biomed Imaging Interv J, 2011 01 01;7(1):e2.
PMID: 21655111 DOI: 10.2349/biij.7.1.e2

Noninvasive imaging of coronary artery disease is rapidly replacing angiography as the first line of investigation. Multislice CT is the non-invasive modality of choice for imaging coronary artery disease and provides high speed with good spatial resolution. CT coronary angiography in addition to detecting and characterising atherosclerotic coronary artery disease is also a good imaging tool for evaluating anomalies of coronary arteries. Superdominant right coronary artery with absent left circumflex artery is one such rare coronary artery anomaly which is well evaluated with multislice CT angiography. The authors report one such case of superdominant right coronary artery with absent left circumflex artery imaged with 64-slice MDCT.

Matched MeSH terms: Coronary Artery Disease
Fulltext Are there gender differences in coronary artery disease? The Malaysian National Cardiovascular Disease Database - Percutaneous Coronary Intervention (NCVD-PCI) Registry

Lee CY, Hairi NN, Wan Ahmad WA, Ismail O, Liew HB, Zambahari R, et al.

PLoS One, 2013;8(8):e72382.
PMID: 24015238 DOI: 10.1371/journal.pone.0072382

To assess whether gender differences exist in the clinical presentation, angiographic severity, management and outcomes in patients with coronary artery disease (CAD).

Matched MeSH terms: Coronary Artery Disease/mortality; Coronary Artery Disease/epidemiology*; Coronary Artery Disease/pathology; Coronary Artery Disease/therapy
Coffee consumption and coronary artery calcium in young and middle-aged asymptomatic adults

Choi Y, Chang Y, Ryu S, Cho J, Rampal S, Zhang Y, et al.

Heart, 2015 May;101(9):686-91.
PMID: 25732752 DOI: 10.1136/heartjnl-2014-306663

To investigate the association between regular coffee consumption and the prevalence of coronary artery calcium (CAC) in a large sample of young and middle-aged asymptomatic men and women.

Matched MeSH terms: Coronary Artery Disease/epidemiology*

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