scholarly journals Article Commentary: Predictive Value of Absent Septal q Wave in Patients with Significant Stenosis of Proximal Left Anterior Descending Coronary Artery

2010 ◽  
Vol 4 ◽  
pp. CMC.S5135 ◽  
Author(s):  
Saeed Alipour Parsa ◽  
Anahita Shahnazi ◽  
Azadeh Malek ◽  
Eznollah Azargashb ◽  
Manijeh Mohammadi ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Coronary Angiography ◽  
Predictive Value ◽  
Kappa Statistic ◽  
Descriptive Study ◽  
Exact Role ◽  
Significant Stenosis ◽  
Artery Disease ◽  
Q Wave

Aims There is conflicting data about the predictive value of absent septal q wave in patients with significant stenosis of proximal Left Anterior Descending coronary artery. To clarify the exact role of this simple electrocardiographic sign we conducted this prospective descriptive study. Methods Patients who were referred for coronary angiography in Milad Hospital between December 2008 and September 2009 were chosen randomly. Standard ECG was performed and reviewed for presence or absence of septal q wave, and then the coronary angiography was done and reported by another cardiologist. Results Of 148 patients with absent septal q wave in ECG, 85 patients (57%) had significant stenosis of proximal LAD in coronary angiography. Statistical analysis showed that significant stenosis of proximal LAD could be predicted by absence of septal q wave in ECG with sensitivity of 59% and specificity of 47%. However, Kappa statistic (Kappa = 0.36) showed low agreement between them. Conclusion Absence of normal septal q wave in ECG could be a low value predictor of coronary artery disease mainly significant proximal LAD stenosis.

Abstract 5803: Optimal Threshold for Multi Detector Computer Tomography to Detect Physiologically Significant Stenosis in Patients with Ischemic Heart Disease

Circulation ◽  
2008 ◽  
Vol 118 (suppl_18) ◽  
Author(s):  
Takashi Yamano ◽  
Atsushi Tanaka ◽  
Takashi Tanimoto ◽  
Shigeho Takarada ◽  
Hiroki Kitabata ◽  
...  
Keyword(s):  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Coronary Angiography ◽  
Positive Predictive Value ◽  
Negative Predictive Value ◽  
Predictive Value ◽  
Optimal Threshold ◽  
Fractional Flow ◽  
Significant Stenosis ◽  
Artery Disease

PURPOSE: Sixty-four multi detector computed tomography angiography (64-MDCT) has emerged as a rapidly developing method for the noninvasive detection of coronary artery disease with high negative predictive value and relatively low positive predictive value, especially in patients with intermediate-severity coronary artery disease (ISCAD). There are, however, few studies regarding with optimal threshold for detection of physiologically significant stenosis in 64-MDCT. The purpose of this study was to investigate the optimal threshold for 64-MDCT to detect physiologically significant stenosis using fractional flow reserve of the myocardium (FFRmyo) in patients with ISCAD. METHODS: We enrolled single lesions detected by 64-MDCT of 64 ISCAD patients (age, 68.3 +/− 10.2 years; 78% male). FFRmyo </= 0.75 measured by a 0.014-inch pressure wire was used as the gold standard for presence of physiologically significant stenosis. The area stenosis (%AS) in 64-MDCT were compared with the results of FFRmyo and percent diameter stenosis (%DS) in quantitative coronary angiography (QCA) during elective coronary angiography. Using receiver operating characteristic (ROC) analysis, the optimum threshold for percent area stenosis (%AS) in 64-MDCT was determined in the prediction of FFRmyo </= 0.75. RESULTS: There was an inverse correlation between %AS in 64-MDCT and FFRmyo (65 +/− 20 % and 0.71 +/− 0.16, respectively; r = −0.67; p < 0.01). Furthermore, there was a positive correlation between %AS in 64-MDCT and %DS in QCA (65 +/− 20 % and 63 +/− 19 %, respectively; r = 0.69; p < 0.01). Using a cutoff of 62 %AS in 64-MDCT, ROC curve analysis shows 79 % sensitivity, 85 % specificity, 82% positive predictive value, 83% negative predictive value and 83% accuracy for detecting physiologically significant stenosis. CONCLUSION: > 62 %AS in 64-MDCT could predict the physiologically significant coronary stenosis in patients with ISCAD. Applying an alternative threshold to detect physiologically significant stenosis might contribute to improve the diagnostic accuracy for 64-MDCT in patients with ISCAD.

scholarly journals Accuracy of MSCT Coronary Angiography with 64 Row CT Scanner—Facing the Facts

2010 ◽  
Vol 4 ◽  
pp. CMC.S3864 ◽  
Author(s):  
M. Wehrschuetz ◽  
E. Wehrschuetz ◽  
H. Schuchlenz ◽  
G. Schaffler
Keyword(s):  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Coronary Angiography ◽  
Positive Predictive Value ◽  
Diagnostic Accuracy ◽  
Predictive Value ◽  
Diagnostic Potential ◽  
Coronary Artery Stenoses ◽  
Artery Disease ◽  
Msct Angiography

Improvements in multislice computed tomography (MSCT) angiography of the coronary vessels have enabled the minimally invasive detection of coronary artery stenoses, while quantitative coronary angiography (QCA) is the accepted reference standard for evaluation thereof. Sixteen-slice MSCT showed promising diagnostic accuracy in detecting coronary artery stenoses haemodynamically and the subsequent introduction of 64-slice scanners promised excellent and fast results for coronary artery studies. This prompted us to evaluate the diagnostic accuracy, sensitivity, specificity, and the negative und positive predictive value of 64-slice MSCT in the detection of haemodynamically significant coronary artery stenoses. Thirty-seven consecutive subjects with suspected coronary artery disease were evaluated with MSCT angiography and the results compared with QCA. All vessels were considered for the assessment of significant coronary artery stenosis (diameter reduction ≥ 50%). Thirteen patients (35%) were identified as having significant coronary artery stenoses on QCA with 6.3% (35/555) affected segments. None of the coronary segments were excluded from analysis. Overall sensitivity for classifying stenoses of 64-slice MSCT was 69%, specificity was 92%, positive predictive value was 38% and negative predictive value was 98%. The interobserver variability for detection of significant lesions had a κ-value of 0.43. Sixty-four-slice MSCT offers the diagnostic potential to detect coronary artery disease, to quantify haemodynamically significant coronary artery stenoses and to avoid unnecessary invasive coronary artery examinations.

scholarly journals Role of adjuvant carotid ultrasound in women undergoing stress echocardiography for the assessment of suspected coronary artery disease

Open Heart ◽  
2020 ◽  
Vol 7 (1) ◽  
pp. e001188
Author(s):  
Sothinathan Gurunathan ◽  
Mayooran Shanmuganathan ◽  
Reinette Hampson ◽  
Rajdeep Khattar ◽  
Roxy Senior
Keyword(s):  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Predictive Value ◽  
Carotid Plaque ◽  
Stress Echocardiography ◽  
Risk Scores ◽  
Plaque Burden ◽  
Carotid Ultrasound ◽  
Artery Disease

ObjectiveDue to the low prevalence of obstructive coronary artery disease (CAD) in women, stress testing has a relatively low predictive value for this. Additionally, conventional cardiovascular risk scores underestimate risk in women. This study sought to evaluate the role of atherosclerosis assessment using carotid ultrasound (CU) in women attending for stress echocardiography (SE).MethodsThis was a prospective study in which consecutive women with recent-onset suspected angina, who were referred for clinically indicated SE, underwent CU.Results415 women (mean age 61±10 years, 29% diabetes mellitus, mean body mass index 28) attending for SE underwent CU. 47 women (11%) had inducible wall motion abnormalities, and carotid disease (CD) was present in 46% (carotid plaque in 41%, carotid intima-media thickness >75th percentile in 15%). Women with CD were older (65 vs 58 years, p<0.001), and more likely to have diabetes (41% vs 21%, p=0.001), hypertension (67% vs 36%, p<0.01) and a higher pretest probability of CAD (59% vs 41%, p<0.001). 40% of women classified as low Framingham risk were found to have evidence of CD.The positive predictive value of SE for flow-limiting CAD was 51%, but with the presence of carotid plaque, this was 71% (p<0.01). Carotid plaque (p=0.004) and ischaemia (p=0.01) were the only independent predictors of >70% angiographic stenosis. In women with ischaemia on SE and no carotid plaque, the negative predictive value for flow-limiting disease was 88%.During a follow-up of 1058±234 days, there were 15 events (defined as all-cause mortality, non-fatal myocardial infarction, heart failure admissions and late coronary revascularisation). Age (HR 1.07 (1.00–1.15), p=0.04), carotid plaque burden (HR 1.65 (1.36–2.00), p<0.001) and ischaemic burden (HR 1.41 (1.18–1.68), p<0.001) were associated with outcome. There was a stepwise increase in events/year from 0.3% when there were no ischaemia and atherosclerosis, 1.1% when there was atherosclerosis and no ischaemia, 2.2% when there was ischaemia and no atherosclerosis and 10% when there were both ischaemia and atherosclerosis (p<0.001).ConclusionCU significantly improves the accuracy of SE alone for identifying flow-limiting disease on coronary angiography, and improves risk stratification in women attending for SE, as well identifying a subset of women who may benefit from primary preventative measures.

scholarly journals Peran Duke Treadmill Score sebagai Prediktor Penyakit Jantung Koroner pada Pasien dengan Uji Treadmill Positif The Role of Duke Treadmill Score as a Predictor of Coronary Artery Disease in Patients with Positive Treadmill Test Results

2016 ◽  
Vol 3 (2) ◽  
pp. 81
Author(s):  
Muhammad Ikhsan ◽  
Sally Aman Nasution ◽  
Ika Prasetya Wijaya ◽  
Cleopas Martin Rumende
Keyword(s):  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Coronary Angiography ◽  
Negative Likelihood Ratio ◽  
Receiver Operator Curve ◽  
Treadmill Test ◽  
Duke Treadmill Score ◽  
Artery Disease ◽  
Operator Curve

Pendahuluan. Coronary Artery Disease (CAD) merupakan penyakit yang masih menjadi penyebab utama morbiditas dan mortalitas di dunia. Uji treadmill merupakan modalitas diagnostik untuk CAD yang tersedia secara luas di Indonesia, namun performa ketepatan diagnostiknya masih perlu ditingkatkan. Penelitian yang dilakukan ini menggunakan Duke Treadmill Score (DTS) sebagai prediktor Coronary Artery Disease.Metode. Penelitian ini menggunakan desain studi potong lintang yang dilakukan pada subjek dengan CAD stabil berusia 18-75 tahun yang menjalani uji treadmill dengan hasil positive ischemic response dan sudah dilakukan korangiografi di Poliklinik Pelayanan Jantung Terpadu Rumah Sakit dr. Cipto Mangunkusumo (RSCM) dalam kurun waktu Januari 2011 hingga Desember 2013.Hasil. Didapatkan 103 subjek dengan 37,9% diagnosis CAD signifikan dari corangiografi. Dari ROC (Receiver Operator Curve) ditentukan titik potong DTS pada nilai -8,85. Didapatkan nilai sensitivitas, spesifisitas, nilai duga positif (NDP) dan nilai duga negatif (NDN) DTS masing-masing sebesar 28% (IK 95%: 17%-44%), 95% (IK 95%: 87%-98%), 79% (IK 95%: 52%-92%) dan 69% (IK 95%: 58%-77%).Simpulan. Disimpulkan DTS dapat memprediksi CAD yang signifikan pada titik potong -8,85 untuk pasien uji treadmill positif dengan nilai duga positif yang cukup baik.Kata Kunci: CAD, DTS, uji treadmillThe Role of Duke Treadmill Score as a Predictor of Coronary Artery Disease in Patients with Positive Treadmill Test ResultsIntroduction. Coronary Artery Disease (CAD) is one of the disease entity that leading cause of morbidity and mortality in worldwide. Treadmill test is part of the diagnostic modality which readily available to assess possibility of narrowing coronary artery and guiding us whether we need for the further investigation. Despite of that, treadmill test has limitation in diagnostic accuracy. Duke Treadmill Score (DTS) was also tested as a diagnostic score, and shown to predict significant CAD better than the ST-segment response alone.Methods. This is a cross-sectional study performed in adult patients with stable CAD that underwent treadmill test and coronary angiography in outward patient clinic of the Integrated Cardiac Service in Cipto Mangunkusumo Hospital between January 2011 and December 2013.Results. A total of 103 patients in this study, thirty nine patients (37,9 %) had significant CAD in coronary angiography. Briefly, mean age was 54,71 years and 55 patients (53,4 %) were females. The most common CAD risk factor was hypertension (51,5 %). A mean of DTS score was -3.53, which mostly categorized as intermediate risk (89,3 %). Based on DTS results, cut-off point was determined by using Receiver Operator Curve (ROC) method, in which value of -8,85 considering as a cut-off point. Sensitivity and specificity value of DTS were 28 % (CI 95 %: 17 % to 44 %), and 95 % (CI 95 %: 87 % to 98 %). Positive and negative predictive value were 79 % (CI 95 %: 52 % to 92 %) and 69 % (CI 95 %: 58 % to 77 %). Positive and negative likelihood ratio were 6.02 and 0.75.Conclusions. DTS has a good performance in predicting significant CAD at cut-off point -8,85 in patients with positive treadmill test.Keywords: CAD, DTS, treadmill test

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