Known History Of Coronary Artery Disease Research Articles

Distal Upper Extremity Arterial Calcification as a Predictor for Subclinical Coronary Artery Disease by Coronary Artery Calcium Scoring.

Several studies have linked calcification of the thoracic and lower extremity arterial trunks to an increased risk of developing coronary artery disease (CAD). Calcifications of the radial and/or ulnar artery are regularly identified in hand/wrist x-rays; however, the clinical relevance of these findings as related to identifying subclinical CAD is not well understood. Associations between CAD and upper extremity calcifications have been reported, but the timeline is unclear. The purpose of this study was to evaluate the association between upper extremity arterial calcifications on hand radiographs with CAD by coronary artery calcification (CAC) scoring in patients with no known history of CAD. This is a pilot single-center, prospective, matched cohort study. We included patients with no known history of CAD, related symptoms, or major risk factors. We recruited five patients with calcifications (cal+) and five patients matched by age, race, sex, and medical history but without calcifications (cal-). CAC scores were determined from computed tomography scanning, and lipid profile was evaluated. In the cal+ group, the mean CAC total score was 244.1; in the control (cal-) group, it was 85.2. The mean total cholesterol levels were 220.8 mg per dL and 167 mg per dL in the cal+ and cal- groups, respectively. Two cal+ patients with CAC scores of 937 and 669 died shortly after being enrolled in our study. Preliminary findings suggest that calcifications in the radial or ulnar artery in otherwise asymptomatic patients with no history of CAD may be an independent sign of CAD.

A new predictor of coronary artery disease in acute ischemic stroke or transient ischemic attack patients: pericarotid fat density.

The study aims to evaluate the incremental predictive value of pericarotid fat density (PFD) on head and neck computed tomography angiography (CTA) for the obstructive coronary artery disease (CAD) (≥ 50% stenosis) relative to a clinical risk model (Framingham risk score (FRS)) and the degree of carotid artery stenosis and plaque type in acute ischemic stroke (AIS) or transient ischemic attack (TIA) patients without a known history of CAD. In a cohort of 134 consecutive stable patients diagnosed with AIS or TIA undergoing head and neck CTA between January 2010 and December 2021, pericarotid adipose tissue density (PFD) was quantified using a dedicated software. We collected demographic and clinical data, assessed the risk of CAD using the FRS, and analyzed coronary and carotid artery CTA images. Univariate and multivariate logistic regression analyses were performed to assess associations between FRS, PFD, CTA variables, and obstructive CAD risk. Four prediction models were established to evaluate the incremental predictive value of PFD relative to FRS, stenosis degree, and plaque types. Receiver operating characteristic (ROC) curves were generated, and the areas under the curves (AUC) were compared. Increasing FRS, stenosis degree, and PFD values were positively correlated with obstructive CAD (all p < 0.05). In the predictive models for obstructive CAD, the model incorporating carotid stenosis exhibited superior predictive performance compared to FRS alone (p < 0.05). Moreover, the predictive model integrating PFD demonstrated enhanced performance and yielded the highest AUC of the receiver operator characteristic curve (AUC = 0.783), with sensitivity and specificity values of 86.89% and 65.75%, respectively. CTA-derived PFD measurements offer supplementary predictive value for obstructive CAD beyond FRS and stenosis, thereby facilitating improved risk stratification of TIA or stroke patients without a history of CAD history. CTA-derived PFD provides incremental predictive value for obstructive coronary artery disease in acute ischemic stroke or transient ischemic attack patients without CAD history, beyond Framingham risk score and carotid artery stenosis degree, improving risk stratification. • Pericarotid fat density is associated with obstructive coronary artery disease in acute ischemic stroke or transient ischemic attack patients. • Higher pericarotid fat density corresponds to an increased risk of obstructive coronary artery disease. • Estimation of pericarotid fat density using computed tomography angiography imparts additional predictive value for obstructive CAD in risk stratification of acute ischemic stroke or transient ischemic attack patients.

Focus on the Most Common Paucisymptomatic Vasculopathic Population, from Diagnosis to Secondary Prevention of Complications.

Middle-aged adults can start to be affected by some arterial diseases (ADs), such as abdominal aortic or popliteal artery aneurysms, lower extremity arterial disease, internal carotid, or renal artery or subclavian artery stenosis. These vasculopathies are often asymptomatic or paucisymptomatic before manifesting themselves with dramatic complications. Therefore, early detection of ADs is fundamental to reduce the risk of major adverse cardiovascular and limb events. Furthermore, ADs carry a high correlation with silent coronary artery disease (CAD). This study focuses on the most common ADs, in the attempt to summarize some key points which should selectively drive screening. Since the human and economic possibilities to instrumentally screen wide populations is not evident, deep knowledge of semeiotics and careful anamnesis must play a central role in our daily activity as physicians. The presence of some risk factors for atherosclerosis, or an already known history of CAD, can raise the clinical suspicion of ADs after a careful clinical history and a deep physical examination. The clinical suspicion must then be confirmed by a first-level ultrasound investigation and, if so, adequate treatments can be adopted to prevent dreadful complications.

Long-standing persistent atrial fibrillation with low coronary flow reserve is associated with unnecessary coronary angiography

Abstract Background/Introduction Atrial fibrillation (AF) is associated with an increased risk of myocardial infarction. Myocardial perfusion imaging (MPI) is well-established for the diagnosis of coronary artery disease (CAD) and risk-stratification in sinus rhythm (SR) patients. Purpose The aim of this study was to determine the impact of AF and coronary flow reserve (CFR) on revascularization in patients undergoing positron emission tomography (PET) MPI. Methods 680 patients without a known history of CAD were included. 226 paroxysmal AF (PAF) and 114 long-standing persistent AF (LSPAF) patients were identified from a single-center prospective PET MPI registry and propensity matched in a 1:1 ratio to SR patients. The main indications for PET MPI were chest pain and dyspnea. Follow-up was obtained for downstream referral for invasive coronary angiography (CAG) and the occurrence of myocardial infarction (MI) or coronary revascularization. Results Compared with PAF, LSPAF patients were older (p=0.011) and more frequently male (p=0.031), with no significant differences in prior medical history and cardiac risk factors. The number of abnormal scans (infarction or ischemia) did not differ significantly between SR and AF, respectively 22.1% and 18.5% (p=0.253). The frequency of downstream CAG was comparable between the groups (p=0.298), with a significantly higher yield of obstructive CAD in the SR group as compared to PAF and LSPAF groups (63% vs 42% vs 36%, p=0.007). A low CFR (defined as CFR below the median of 2.4) in patients with SR showed significantly more revascularization compared with PAF and LSPAF (p&amp;lt;0.001), although more patients with LSPAF and low CFR underwent CAG (p&amp;lt;0.001). In patients with low CFR referred for CAG, the overall prevalence of obstructive coronary artery disease on CAG was 62%, with 30% for LSPAF, 52% for PAF and 78% for SR. There were no significant differences between SR, PAF and LSPAF in the occurrence of MI during a mean follow-up of 36 months (p=0.256). Conclusion A low CFR was only associated with a higher incidence of revascularization in patients with SR. Among patients with low CFR, LSPAF patients have the highest number of unnecessary CAGs as compared with SR and PAF. Funding Acknowledgement Type of funding sources: None.

Association of epicardial adipose tissue and coronary artery calcium score in patients with atrial fibrillation

Abstract Funding Acknowledgements Type of funding sources: None. Introduction Both coronary artery calcium (CAC) and epicardial adipose tissue (EAT) had been implicated in coronary artery disease (CAD) and risk of future adverse cardiovascular events. There are scarce data regarding the assessment and association of EAT volume and CAC score (CACS) in atrial fibrillation (AF) patients. Purpose To assess the association between EAT volume and the presence and severity of CAC in patients with AF. Methods Retrospective and single-centre study including consecutive patients with AF undergoing contrast-enhanced cardiac computed tomography for catheter ablation planning, from 2017 to 2019. Patients with known history of CAD and moderate to severe valvular heart disease were excluded. Baseline clinical and demographical data were collected, as well as their cardiovascular risk, based on the SCORE (Systematic Coronary Risk Evaluation) system and cardiovascular risk categories. We assessed CACS (Agatston method) and EAT volume and analysed their association. EAT was defined as the adipose tissue accumulated between the visceral pericardium and the myocardium and was semi-automatically reconstructed by manually tracing the pericardium. Patients were split into three groups according to CACS: 0, 1-99 and ≥100. A logistic regression (LR) analysis was performed to explore the relationship between EAT volume and the presence of CAC (CACS&amp;gt;0), adjusted for age, gender, obesity, diabetes mellitus and hypertension. Results A total of 354 patients were included, with a mean age of 56 ± 12 years, 66% male and 21% with persistent AF. A CHA2DS2-VASc score ≥2 was present in 130 (37%) patients and most patients had low to moderate cardiovascular risk (n=213, 82%). More than half of the patients had a CACS&amp;gt;0 (n=185, 52%), of which 63 patients (18%) had a CACS≥100. The mean EAT volume was 79 ± 39 ml. There was a significant association between EAT volume and the presence of CAC: CACS=0 69 ± 34 ml vs CACS 1-99 84 ± 38 ml vs CACS ≥100 95 ± 45 ml (p&amp;lt;0.001) (Fig. 1). After covariate adjustment (LR model R2 = 0.373, p &amp;lt;0.0001), the presence of CAC was not associated with EAT volume (OR 1.00, 95%CI 1.00 - 1.01, p=0.2) or obesity, and only with higher age, male gender, hypertension and diabetes mellitus (Fig. 2). Conclusion In our cohort of patients with AF undergoing catheter ablation we observed an association between EAT and CACS. Nevertheless, EAT volume was not an independent predictor of CACS and only the classical cardiovascular risk factors remained significant.

Low coronary flow reserve in patients with long-standing persistent atrial fibrillation is associated with worse clinical outcomes

Abstract Funding Acknowledgements Type of funding sources: None. Background / Introduction Atrial fibrillation (AF) is associated with an increased risk of myocardial infarction, stroke and all-cause mortality. Myocardial perfusion imaging (MPI) is well-established for the diagnosis of coronary artery disease (CAD) and risk-stratification in sinus rhythm (SR) patients. Purpose The aim of this study was to determine the prognostic impact of AF and coronary flow reserve (CFR) in patients undergoing positron emission tomography (PET) MPI. Methods 680 patients without a known history of CAD were included. 226 paroxysmal AF (PAF) and 114 long-standing persistent AF (LSPAF) patients were identified from a prospective PET MPI registry in the Isala Hospital and propensity matched in a 1:1 ratio to SR patients. The main indications for PET MPI were chest pain and dyspnea. Follow-up was obtained for the occurrence of major adverse cardiac and cerebrovascular events (MACCE, composite of myocardial infarction (MI), stroke/transient ischemic attack (TIA) or all-cause death). Results Compared with patients with PAF, patients with LSPAF were older (p=0.011) and more frequently male (p=0.031), with no significant differences in medical history. There were no significant differences between SR and AF in the occurrence of MACCE during a mean follow-up of 36 months. However, the incidence of downstream coronary angiography (p&amp;lt;0.001) and MACCE (p=0.028) was higher in patients with LSPAF compared to those with PAF and SR. A low CFR (defined as CFR below the median of 2.4) in patients with LSPAF showed significantly more MACCE compared with SR and PAF (p&amp;lt;0.001). Moreover, LSPAF was an independent predictor of MACCE (odds ratio 1.667, 95% confidence interval 1.028±2.705). Conclusion Low CFR in patients with LSPAF is associated with a higher incidence of MI, stroke/TIA and death compared with low and normal coronary flow parameters in patients with SR and PAF.

Prediction of Hidden Coronary Artery Disease Using Machine Learning in Patients With Acute Ischemic Stroke.

A machine learning technique for identifying hidden coronary artery disease (CAD) might be useful. We developed and validated machine learning models to predict patients with hidden CAD and to assess long-term outcomes in patients with acute ischemic stroke. Multidetector coronary CT was performed for patients without a known history of CAD. Primary outcomes were defined as having any degree of CAD and having obstructive CAD (≥50% stenosis). Demographic variables, risk factors, laboratory results, Trial of ORG 10172 in Acute Stroke Treatment classification, NIH Stroke Scale score, blood pressure, and carotid artery stenosis were used to develop and validate machine learning models to predict CAD. Area under the receiver operating characteristic curves (AUC) was calculated for performance analysis, and Kaplan-Meier and Cox survival analyses of long-term outcomes were performed. Major adverse cardiovascular events (MACEs) were defined as ischemic stroke, myocardial infarction, unstable angina, urgent coronary revascularization, and cardiovascular mortality. Overall, 1,710 patients were included for the training dataset and 348 patients for the validation dataset. An extreme gradient boosting model was developed to predict any degree of CAD, which showed an AUC of 0.763 (95% CI 0.711-0.814) on validation. A logistic regression model was used to predict obstructive CAD and had an AUC of 0.714 (95% CI 0.692-0.799). During the first 5 years of follow-up, MACEs occurred more frequently with predictions of any CAD (p = 0.022) or obstructive CAD (p < 0.001). Cox proportional analysis showed that the hazard ratio of MACE was 1.5 (95% CI 1.1-2.2; p = 0.016) with prediction of any CAD, whereas it was 1.9 (95% CI 1.3-2.6; p < 0.001) for obstructive CAD. We demonstrated that machine learning may help identify hidden CAD in patients with acute ischemic stroke. Long-term outcomes were also associated with prediction results. This study provides Class II evidence that in patients with acute ischemic stroke with CAD risk factors but no known history of CAD, a machine learning model predicts CAD on multidetector coronary CT with an AUC of 0.763 (95% CI 0.711-0.814).

Are hypertensive patients with history of coronary artery disease at risk for silent lower extremity artery disease?

We aimed to investigate the association between hypertension and asymptomatic lower extremity artery disease (LEAD) in outpatients with known history of coronary artery disease (CAD). Patients with known history of CAD who have been undergone coronary angiography and have significant coronary artery stenosis (more than 60%) were included. LEAD was defined as ankle-brachial index (ABI)<0.9 in either leg. The risk of LEAD in hypertensive group was analyzed using chi-square test, and correlation between blood pressure (BP) and ABI was analyzed using Pearson correlation test in SPSS v.25. One hundred and four patients were included. 82.7% of patients were male. Mean age was 57.05±7.97. The prevalence of hypertension was 35.6%, and the prevalence of LEAD was 16.3%. A higher proportion of LEAD was found in hypertensive (18.9%) compared to non-hypertensive (14.9%), although not statistically significant (OR: 1.33; 95% CI: 0.46 to 3.85; p=0.598). There was an association between ABI and systolic BP (p=0.016), but not with diastolic BP (p=0.102). Our study showed that the prevalence of LEAD in hypertension, especially in the CAD population, is relatively high. There was no association between hypertension and LEAD, but a higher prevalence of LEAD was found in hypertensive patients. Nevertheless, LEAD screening is still recommended in hypertensive patients, especially in the CAD population, given the fact that outcomes of health and mortality are worse for those with concomitants of these diseases.

External validation of a low HEAR score to identify emergency department chest pain patients at very low risk of major adverse cardiac events without troponin testing.

The history, ECG, age, risk factor (HEAR) score has been proposed to identify patients at sufficiently low risk of acute coronary syndrome that they may not require troponin testing. The objective of this study was to externally validate a low HEAR score to identify emergency department (ED) patients with chest pain at very low risk of 30-day major adverse cardiac events (MACE). This was a secondary analysis of a prospective cohort of patients requiring troponin testing to rule out myocardial infarction (MI) in a large urban ED. HEAR scores were calculated in two cohorts: (1) patients with no known history of coronary arterydisease (CAD); and (2) all eligible patients. The proportion of patients classified as very low risk, sensitivity, specificity, predictive values and likelihood ratios at each cut-off were quantified for index acute myocardial infarction (AMI) and 30-day MACE at HEAR = 0 and HEAR ≤ 1 thresholds. Of the 1150 patients included in this study, 820 (71.3%) had no history of CAD, 97 (8.4%) had index AMI and 123 (10.7%) had 30-day MACE. In patients with no prior history of CAD, HEAR ≤ 1 identified 202 (24.6%) of patients as very low risk for 30-day MACE with 98.4% (95% CI 91.6-99.9%) sensitivity. Among all patients, HEAR ≤ 1 identified 202 (17.6%) patients as very low risk for 30-day MACE with 99.2% (95% CI 95.6-99.9%) sensitivity. A HEAR score ≤ 1 can identify more than 17% of all patients as very low risk for index AMI and 30-day MACE and unlikely to benefit from troponin testing. Broad implementation of this strategy could lead to significant resource savings.

Conventional cardiac risk factors associated with Trastuzumab induced cardio-toxicity in breast cancer: a meta-analysis

Abstract Funding Acknowledgements Type of funding sources: None. Background Trastuzumab has had a major impact on the treatment of human epidermal growth factor receptor 2(HER-2) positive breast cancer patients. However, it is associated with cardiotoxicity, expressed as an asymptomatic decrease in LVEF and less often as clinical HF. Published studies have tried to identify risk factors predisposing to cardiotoxicity but the results are not uniform. The aim of this meta-analysis is to identify the association of the conventional cardiovascular risk factors:age, smoking, hypertension, hyperlipidaemia, obesity, diabetes mellitus, family history of cardiac disease and the previous history of coronary artery disease (CAD), with the development of Trastuzumab induced cardiotoxicity (TIC). Methods A literature search of PubMed was conducted to identify studies examining the association between cardiovascular risk factors and TIC. The primary outcome of interest was the development of cardiotoxicity manifested as heart failure or deterioration in LVEF based on the criteria presented within each study. We included prospective and retrospective studies of patients with HER2 positive breast cancer who were treated with Trastuzumab. Data were extracted and pooled odds ratios (ORs) with 95% confidence intervals (Cis) were calculated examining the odds of developing TIC for each of the risk factors. Results A total of 35 studies were included in the analysis. Age &amp;gt; 60 years old (OR: 0.7; 95% CI: 0.318-1.09; p = 0.0004), hypertension (OR: 0.69; 95% CI: 0.26-1.12; p = 0.001), smoking (OR: 0.35; 95% CI: 0.01- 0.69; p = 0.038), diabetes mellitus (OR: 0.44; 95% CI: 0.24- 0.68; p = 0.0001) and family history of CAD (OR: 5.51, 95%CI 1.76-17.25; p&amp;lt; 0.00001) were significantly associated with the development of cardiotoxicity. Known history of CAD (OR: 3.72; 95%CI 2.11-6.57; p = 0.0005) was also associated with the development of TIC. On the other hand, obesity (OR: 2.47; 95% CI: 0.93- 6.55; p= 0.07) and hyperlipidaemia (OR: 1.32, 95% CI: 0.71- 2.46; p = 0.38) did not meet statistical significance for association with TIC. Conclusion Identifying women at risk for TIC have several important potential applications. Clinicians may decide to assess LVEF more frequently in patients at highest risk for TIC in order to detect LV systolic dysfunction earlier. Identifying high risk patients may play a role for recognition which individuals would obtain the most benefit from prophylactic therapy for preventing TIC. this could help identify patients who would benefit most from prophylactic therapy for preventing TIC. Finally, these factors could in the future form the basis of a risk model for TIC.

Pre-existing depression in patients with coronary artery disease undergoing percutaneous coronary intervention

The impact of pre-existing depression on mortality in individuals with established coronary artery disease (CAD) remains unclear. We evaluate the clinical implications of pre-existing depression in patients who underwent percutaneous coronary intervention (PCI). Based on National Health Insurance claims data in Korea, patients without a known history of CAD who underwent PCI between 2013 and 2017 were enrolled. The study population was divided into patients with angina (n = 50,256) or acute myocardial infarction (AMI; n = 40,049). The primary endpoint, defined as all-cause death, was compared between the non-depression and depression groups using propensity score matching analysis. After propensity score matching, there were 4262 and 2346 matched pairs of patients with angina and AMI, respectively. During the follow-up period, there was no significant difference in the incidence of all-cause death in the angina (hazard ratio [HR] of depression, 1.013; 95% confidence interval [CI] 0.893–1.151) and AMI (HR, 0.991; 95% CI 0.865–1.136) groups. However, angina patients less than 65 years of age with depression had higher all-cause mortality (HR, 1.769; 95% CI 1.240–2.525). In Korean patients undergoing PCI, pre-existing depression is not associated with poorer clinical outcomes. However, in younger patients with angina, depression is associated with higher all-cause mortality.

Risk of a coronary event in patients after ischemic stroke or transient ischemic attack.

Coronary artery disease (CAD) together with stroke are the leading causes of death worldwide, and together, they pre-sent a health and economic burden. Ischemic stroke survivors and patients who suffered transient ischemic attack (TIA) have a higher prevalence of coronary atherosclerosis, and they have a relatively high risk of myocardial infarcti-on and nonstroke vascular death. Pubmed was searched for studies focused on investigating coronary atherosclerosis in ischemic stroke survivors or patients who suffered TIA and their cardiovascular risk assessment. There were corona-ry plaques in 48%-70% of stroke survivors without a known history of CAD, and significant stenosis of at least one coronary artery can be found in 31% of these patients. CAD is a major cause of morbidity and mortality in stroke survivors. Detection and treatment of silent CAD may improve the long-term outcome and survival of these patients.

Is coronary computed tomography angiography a good choice for elders and high probability cases?

Abstract Introduction Coronary computed tomography angiography (cCTA) is widely considered the optimal non-invasive test to rule out coronary artery disease (CAD) and the gatekeeper for invasive coronary angiography (ICA). However, its diagnostic utility in elderly patients (pts) and in cases of high pre-test probability (PTP) is still questioned. Aim To determine whether older age and high PTP are correlated with non-diagnostic cCTA scans in pts with suspected chronic coronary syndrome (CCS). Methods Single-centre retrospective study of 302 pts with suspected CAD assigned to two groups: (A) 207 pts aged ≥70 years (y); (B) 95 aged &amp;lt;70y. Younger pts were randomly selected from our database. We excluded pts with known history of CAD and suspected acute coronary syndrome. A 192x2 dual-source CT equipment was used. Baseline demographic and clinical characteristics were collected as well as scan features and findings. We defined high PTP according to clinical Morise score. Our endpoint was the obtention of diagnostic scan (all segments evaluable). Multivariate analysis was performed to assess the determinants of non-diagnostic scans. We used SPSS Statistics 22 for statistical analysis. Results Overall, mean age was 68±9y and 53% were male. Elderly pts presented more co-morbidities (hypertension: 78.3 vs 54.7%, p&amp;lt;0.01; hyperlipidaemia: 69.1 vs 52.6%, p&amp;lt;0.01; pulmonary disease: 13.0 vs 4.2%, p=0.02) and high PTP more frequently (16.9 vs 6.3%, p&amp;lt;0.01). Total coronary calcium score (CaS) was higher in elderly pts (382.7±658.7 vs 243.5±490.8, p=0.04); per-vessel, both left anterior descending (156.7±254.2 vs 92.2±187.8, p=0.01) and left circumflex (LCX) arteries (65.5±131.3 vs 26.8±67.6, p&amp;lt;0.01) showed higher CaS in the elderly. Multiple calcified plaques (≥5) were also more common in this group (60.4 vs 45.3%, p=0.01). However, the proportion of pts with CaS considered prohibitive for angiography (13.5 vs 7.4%; p=0.12) and calcium blooming artefacts impairing interpretation (14.5 vs 12.5%; p=0.65) did not differ. A diagnostic study was more frequently obtained in younger pts but without reaching statistical significance (69.1 vs 76.8%; p=0.17). Obstructive CAD was equally identified (30.3 vs 30.4%; p=0.92) with a respective per-patient accuracy of 68.4% (13/19) and 57.1% (8/14) comparing with ICA when performed. Multivariate analysis showed that LCX CaS ≥75th percentile and multiple calcified plaques (≥5) were associated with non-diagnostic cCTA scan (Figure 1). High PTP (p=0.83) and age ≥70y (p=0.61) were not associated with the endpoint. Conclusion In this comparison study of elderly and young pts undergoing cCTA for suspected CCS, age ≥70y and high PTP were not associated with non-diagnostic tests while multiple calcified lesions and severe LCX calcification predicted inconclusive studies. Our results cast hope on the applicability of cCTA to elderly pts and cases with high PTP, although larger studies are required. Funding Acknowledgement Type of funding source: None

4-7CORONARY ARTERY DISEASE ALTER ON NOVEL CLASSIFICATION LEFT VENTRICULAR GEMOMETRY IN HYPERTENSIVE PATIENTS IN HASAN SADIKIN GENERAL HOSPITAL BANDUNG

Background: Coronary artery disease (CAD) was known to cause an increase in left ventricular mass and changes in cardiac dimensions in hypertensive patients. There is a novel classification of left ventricular (LV) geometry. Objective: To evaluate the impact of CAD on LV geometry (LV dilatation, hypertrophy, and concetricity) in hypertensive patients at the Hasan Sadikin General Hospital Bandung. Method: Between September and December 2019, 115 consecutive patients underwent trans-thoracal echocardiography examination in Hasan Sadikin General Hospital Bandung, who had suffered from hypertension. Hypertension was defined as resting systolic blood pressure ≥140mmHg and/or diastolic blood pressure ≥90mmHg or on antihypertensive therapy routinely. CAD was defined as the patients have a known history of CAD in the medical record. Patients were divided based on LV dilation (end-diastolic volume[EDV]/body surface area[BSA]&gt;75 ml/m2), LV hypertrophy (LVM/BSA&gt;115 and &gt;95 g/m2 on men and women respectively), and concentricity (RWT&gt;0.42;0.32–0.42;or&lt;0.32). Results: One-hundred-ten patients were included after excluding patients with incomplete data. Sixty patients (54.55%) were females, mean age was 56.95±11.54 years old. Forty patients was diagnosed CAD (36.36%), 70 patients non-CAD (63.63%). Dilation LV was found in 23 patients (20.9%); CAD vs non-CAD (15/40 (37,5%) vs 8/70 (11,8%)); p = 0,001. Hypertrophic LV was found in 70 patients (63.6%); CAD vs non-CAD (32/40 (80%) vs 38/70 (54.3%)); p = 0,008. Concentricity RWT &gt; 0,42 (60%), RWT 0,32–0,42 (31.8%), RWT &lt; 0,32 (8.2%). In CAD vs non-CAD (26/7/7 vs 40/28/2); p = 0,04. Conclusion: In hypertensive patients, CAD group has significant difference in LV dilatation, hypertrophy, and concentricity compared to it counterparts. Based on this novel classification, CAD in hypertensive patients might have an impact on its prognosis.

449-P: Impact of Body Mass Index (BMI) and Waist Circumference (WC) on Coronary Artery Disease (CAD) in Japanese with and without Diabetes Mellitus (DM)

BMI ≥25.0 and WC ≥90 are components of the International Diabetes Federation (IDF) definition of metabolic syndrome for Asians. We have investigated more suitable BMI and WC levels for risk of CAD using large-scale nationwide claims data on people with and without DM in the same cohort. The sample included 157,220 Japanese men 18-72 years of age without a known history of CAD at baseline (DM: 15,465 patients, non-DM: 141,755 patients). Multivariate Cox regression model examined the association of BMI/WC categories and their combination with CAD. During the study period (median follow-up 5.3 y), 662 and 332 CAD events occurred in non-DM and DM, respectively. Cox regression model showed that BMI ≥22.5 and WC ≥80 conferred a 1.29 (1.07-1.55), and 1.23 (1.00-1.50) times increased risk of CAD, respectively, in non-DM but that those relationships disappeared in people with DM (HR, 0.96 (0.71-1.29) for BMI and 1.13 (0.78-1.62) for WC. Stratified analysis of 4 groups of combinations of BMI and WC showed that in non-DM with BMI ≥22.5/WC ≥80 the risk of future CAD was significantly increased compared with non-DM with BMI&amp;lt;22.5/WC&amp;lt;80 (Table). Each DM group had an approximately 3-fold increase in CAD events (Table). In summary, lower BMI and WC values can predict CAD in individuals without DM whereas their influence was modest in people with DM. Disclosure T. Komatsu: None. K. Fujihara: None. M.H. Yamada: None. T. Sato: None. M. Kitazawa: None. M. Yamamoto: None. H. Seida: None. N. Yamanaka: None. Y. Matsubayashi: None. T. Yamada: None. H. Sone: Research Support; Self; Kyowa Hakko Kirin Co., Ltd., Novartis AG, Ono Pharmaceutical Co., Ltd., Taisho Pharmaceutical Co., Ltd., Takeda Pharmaceutical Co.

Is Lipoprotein (a) a Risk Factor for Coronary Artery Ectasia?

BackgroundThe pathophysiology of coronary artery ectasia (CAE) is under investigated and not well understood. Atherosclerosis is considered as the main etiologic factor for CAE in adults where more than 50% of CAE patients have atherosclerosis. Recently, lipoprotein (a) (Lp(a)) has emerged as a powerful risk factor for atherosclerosis and coronary artery disease (CAD). Serum levels of Lp(a) in patients with CAE have not been investigated. We assumed that Lp(a) may play a role in the pathogenesis of CAE. Principally, our study aims to identify whether Lp(a) is an independent risk factor for CAE.MethodsOur study is a prospective pilot study. Study population was collected prospectively from pool of patients referred for elective cardiac catheterization at Jordan University Hospital (JUH) in the period extending from February 17, 2018 to June 31, 2018. Patients were referred for elective coronary angiography after being interviewed and physically examined by a cardiologist (HA). Patients with known history of CAD or who are already on anti-lipidemic drugs either documented in the medical records or by interviewing patients for history of revascularization were excluded from the study.ResultsRegarding the primary outcome, there was no significant difference in Lp(a) concentrations between normal and ectasia groups in the general sample (median: 17.5mg/dL vs. 20.4 mg/dL, P value = 0.38).ConclusionsOur study concludes that there is no detected relationship between elevated Lp(a) levels and developing CAE. CAE was more common in patients with low high-density lipoprotein (HDL) level (compared with patients with normal coronaries), higher total cholesterol level (compared with patients with non-obstructive stenosis) and higher hemoglobin A1c (HbA1c).

Fragmented QRS on surface electrocardiogram as a predictor of perfusion defect in patients with suspected coronary artery disease undergoing myocardial perfusion imaging

BackgroundFragmented QRS (FQRS) on surface electrocardiogram (ECG) is associated with the presence of myocardial scar tissue and may have prognostic value after certain ischemic events. We aimed to examine the anatomical correlation of FQRS with the presence of perfusion abnormalities in patients with suspected coronary artery disease (CAD). MethodsPatients without a known history of CAD, who were referred for myocardial perfusion imaging (MPI) between January 2016 and May 2016, were enrolled. The presence of FQRS on surface ECG was evaluated. The presence of FQRS, number of leads with FQRS, and the location of FQRS as well as patient characteristics were compared in patients with normal versus abnormal MPI. Multivariate model was constructed to identify independent factors associated with perfusion defect. ResultsOne hundred four women and 94 men were enrolled. Fragmentation of anterior, lateral, and inferior leads was detected in 13 (6.5%), 17 (8.5%), and 36 (18.1%) subjects, respectively. MPI was normal in 134 (67.6%) patients. FQRS was significantly more common in patients with abnormal MPI (p < 0.001). Age (odds ratio [OR]: 1.05 [1.02–1.08]; p = 0.001), number of the leads presenting FQRS (OR: 1.46 [1.12–1.92] p = 0.006), and diabetes (OR: 2.33 [1.16–4.69]; p = 0.018) were independent predictors of the presence of perfusion defect on MPI. ConclusionIn the absence of known CAD, FQRS is associated with the presence of perfusion abnormalities. Incorporating FQRS in diagnostic armamentarium may aid us in selecting patients who may benefit from MPI.

Presence of coronary artery disease in diabetic and non diabetic South Asian immigrants

IntroductionSouth Asian Immigrants (SAIs) are the second fastest growing Asian immigrant population in the US, and at a higher risk of type 2 diabetes (diabetes) and coronary artery disease (CAD) than the general US population. Objectives: We sought to determine in SAIs the; 1) the prevalence of CAD risk factors in diabetics and non-diabetics; and b) the high possibility of CAD in diabetic SAIs. We also assessed the prevalence of sub-clinical CAD in both diabetics and non-diabetics SAIs using common carotid artery Intima-media thickness (CIMT) as a surrogate marker for atherosclerosis. MethodsIn a cross-sectional study design, 213 first generation SAIs were recruited and based on the history, and fasting glucose levels were divided into two subgroups; 35 diabetics and 178 non-diabetics. 12-hour fasting blood samples were collected for glucose and total cholesterol levels. Exercise Tolerance Test (ETT) was performed to determine the possibility of CAD. ResultsBoth diabetics and non-diabetics SAIs in general, share a significant burden of CAD risk factors. The prevalence of hypertension (p=0.003), total cholesterol ≥200mg/dl (p<0.0001) and family history of diabetes (p<0.0001) was significantly was significantly higher in diabetics compared to non-diabetics. Of the 22/29 diabetic participants without known history of CAD, 45% had positive ETT (p<0.001). Similarly, 63.1% of diabetics and 51.8 % of non-diabetics were positive for sub-clinical CAD using CIMT as a marker. ConclusionThe susceptibility to diabetes amongst SAIs promotes an adverse CAD risk, as evident by this small study. Further research, including larger longitudinal prospective studies, is required to validate the current small study findings with investigation of the temporal association.

Assessment of Heart Rate Recovery with GATED-Myocardial Perfusion Scintigraphy Outcome in Patients with Coronary Artery Disease: A Retrospective Study and Institutional Experience.

Objective: This study aimed to investigate the effects of assessment with myocardial perfusion scintigraphy (MPS) and heart rate recovery (HRrec) measurements in combination to evaluate the current status of patients with a diagnosis or suspicion of coronary artery disease (CAD).Methods: A total of 350 patients were included in the study. CAD group consisted of 200 patients with stable angina pectoris and a known history of CAD, while the control group consisted of 150 patients with suspicious stress test who had no history of known CAD. In order to calculate the HRrec index, the treadmill exercise test was performed in all patients according to the Bruce protocol. The MPS results were evaluated for the presence or absence of myocardial ischemia and infarction by visual and quantitative (summed stress score and summed difference score) assessments.Results:When the MPS results and HRrec were evaluated together, there was no statistically significant difference in the non-CAD group. But, when GATED-MPS was evaluated alone in the triple-vessel patient group, 27 (36%) patients were found to be normal while evaluated with HRrec, four (5.3%) patients were found to be normal.Conclusion:HRrec measurements obtained during stress MPS is important in patient evaluation. Therefore, evaluation of MPS results and HRrec measurements together may provide a more accurate estimation of possible presence of CAD in patients.

The Unknown Association of PPIs With Chest Pain in Patients With Known, Treated Coronary Artery Disease—A Diagnostic Dilemma

Patients with coronary artery disease (CAD) are destined to lifelong antiplatelet therapy in form of aspirin (acetylsalicylic acid) alone, or in combination with other P2Y2 inhibitors. Proton pump inhibitors (PPIs) are the preferred agents for the treatment and prophylaxis of gastrointestinal injury associated with nonsteroidal anti-inflammatory drug or acetylsalicylic acid or both,1 but recent data has raised questions about their association with negative cardiovascular events. We report 2 cases of patients with known CAD presented with chest pain mimicking angina pectoris that successfully resolved on discontinuation of the PPIs. One male and one female patient with known history of CAD receiving PPIs were referred to us with symptoms of refractory angina that was unresponsive to conventional optimized medical therapy. The angina was reported to be related to exertion in both the patients. Neither patient had a diagnosis of Prinzmetal angina or peptic ulcer disease; however, both patients reported a history of gastroesophageal reflux disease. Both patients were on dual antiplatelet therapy. No ischemic changes on the electrocardiogram were noted for either patient. Patient 1 had an exercise stress test that was negative for any inducible ischemia whereas patient 2 had no obstructive lesion seen on coronary angiography. Both patients reported to be symptom free after discontinuation of PPIs at 8 months of follow-up. It is our opinion that a relationship between PPIs and angina-like chest pain is plausible, as these 2 cases demonstrate the causative role of PPIs in precipitation of their symptoms. We postulate that this association should be considered in differential diagnosis of chest pain. In light of above findings we suggest that this is hypothesis generating and we are exploring the role of PPIs in patients with history of CAD and refractory angina-like symptoms despite complete revascularization.