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    Relationship between P wave peak time and coronary artery disease severity in non-ST elevation acute coronary syndrome
    (Urban & Vogel, 2021) Bayam, Emrah; Yıldırım, Ersin; Kalçık, Macit; Karaduman, Ahmet; Kalkan, Semih; Güner, Ahmet; Uyan, Cihangir
    Background. Early diagnosis of non-ST elevation acute coronary syndrome (NSTEACS) and prediction of the severity of current coronary artery disease (CAD) play a major role in patient prognosis. Electrocardiography has a unique value in the diagnosis and provides prognostic information on patients with NSTE-ACS. In the present study, we aimed to examine the relationship between P wave peak time (PWPT) and the severity of CAD in patientswith NSTE-ACS. Methods. A total of 132 consecutive patients (female: 35.6%; mean age: 60.1 +/- 11.6 years) who were diagnosed with NSTE-ACS were evaluated retrospectively. Gensini scores (GSs) were used to define the angiographic characteristics of the coronary atherosclerotic lesions. The patients were divided into two groups according to the GS. The PWPT was defined as the duration between the beginning and the peak of the P wave, and R wave peak time (RWPT) was defined as the duration between the beginning of the QRS complex and the peak of the R wave. Results. There were 59 (44.6%) patients in the high-GS group (GS =25) and 73 (55.3%) patients in the low-GS group (GS <25). Presence of diabetesmellitus, low left ventricular ejection fraction, and high RWPT and PWPT were identified as predictors of a high GS in the study population. There was no significant difference between the area under the curves of PWPT and RWPT for predicting the severity of CAD (0.663 vs. 0.623, respectively; p= 0.573). Conclusion. The present study found that both PWPT and RWPT on admission electrocardiography were associated with the severity and complexity of CAD in patients with NSTE-ACS.
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    The relationship between H2FPEF and SYNTAX scores in patients with non-ST elevation myocardial infarction
    (Taylor & Francis Ltd, 2021) Bayam, Emrah; Kalçık, Macit; Öztürkeri, Burak; Yıldırım, Ersin; Karaduman, Ahmet; Kalkan, Semih; Uyan, Cihangir
    Background The Synergy between Percutaneous Coronary Intervention (SYNTAX) score, has been used to estimate the extent and complexity of coronary artery disease (CAD). The H2FPEF score enables robust discrimination of heart failure with preserved ejection fraction (HFpEF) from non-cardiac aetiologies of dyspnea. In the present study, we aimed to investigate the relationship between H2FPEF and SYNTAX scores in patients with non-ST elevation myocardial infarction (NSTEMI). Method Two hundred eighty two consecutive patients with NSTEMI who underwent coronary angiographic examination were enrolled in this study. The H2FPEF score was calculated for each patient on admission. All patients underwent coronary angiography within 2 days following their admission. The SYNTAX scoring system was used to evaluate the severity and extent of CAD. Results The mean H2FPEF Score [3(2-4) vs 1(0.5-1.5),p < .001] and the frequencies of diabetes mellitus, hypertension and, atrial fibrillation were significantly higher and LVEF was significantly lower in patients with high SYNTAX score. High H2FPEF Score (OR: 3.61, 95%CI: 2.64-4.93;p = .001) and low left ventricular ejection fraction (OR: 0.94, 95%CI: 0.89-0.98;p = .013) were found to be independent associates for high SYNTAX score. H2FPEF Score above a cut-off level of 2.5 predicted high SYNTAX score with a sensitivity of 80% and a specificity of 82.5% (AUC: 0.890; 95%CI: 0.848-0.931;p < .001). There was a significant and moderate positive correlation between H2FPEF and SYNTAX Scores (r = 0.694,p < .001). Conclusion High H2FPEF score may be associated with high SYNTAX score and may be used to estimate the extent and complexity of CAD in NSTEMI patients.