The Predictive Role of Small Airway Dysfunction in Postoperative Atrial Fibrillation After Isolated Coronary Artery Bypass Surgery.

OBJECTIVE: Atrial fibrillation is the most common arrhythmia following coronary artery bypass graft surgery. The relationship between impaired lung function and atrial fibrillation has been described previously. We aimed to evaluate the prognostic influence of small airway function on predicting postoperative atrial fibrillation undergoing isolated coronary artery bypass graft surgery (CABG). METHODS: We retrospectively analyzed 283 patients who underwent isolated CABG at our institution between January 2020 and August 2020. The patients were divided into 2 groups according to the development of postoperative atrial fibrillation. Demographic characteristics of the patients were recorded; spirometry was performed for each patient before surgery. Small airway function was determined by forced mid-expiratory flow (forced expiratory flow 25%-75%) values measured by spirometry. Propensity score matching was applied to ensure a balanced distribution of demographic data between the 2 groups. RESULTS: The frequency of postoperative atrial fibrillation was 30.7% in our patient population. After propensity matching, forced expiratory volume in 1 second/forced vital capacity % [80.6 (73.8-87.8) vs. 76.3 (66.7-81.6), P = 0.006] and forced expiratory flow 25%-75% (87.4 ± 14.2 vs. 75.2 ± 15.8, P = 0.001) were significantly lower in postoperative atrial fibrillation group. In multivariate analysis, white blood cell count, left ventricular ejection fraction, cross-clamp time, and forced expiratory flow 25%-75% were found to be independent predictors of postoperative atrial fibrillation development after isolated CABG. In the receiver operating characteristic curve analysis, forced expiratory flow 25%-75% with an optimal threshold value of 81% could detect the presence of postoperative atrial fibrillation with 63.8% sensitivity and 70.1% specificity. CONCLUSION: Our study demonstrated that small airway obstruction, as indicated by forced expiratory flow 25%-75% in spirometry, can be a simple predictive tool for the development of postoperative atrial fibrillation in patients undergoing isolated CABG.

O Valor Preditivo do Escore CHA2DS2-VASc no Escore Syntax Residual em Pacientes com Infarto do Miocárdio com Supradesnivelamento do Segmento ST / The Predictive Value of CHA2DS2-VASc Score on Residual Syntax Score in Patients With ST Segment Elevation Myocardial Infarction

Resumo Fundamento O escore CHA2DS2-VASc está associado a desfechos clínicos adversos em pacientes com doença cardiovascular. O escore Syntax residual (residual Syntax score — rSS) é uma ferramenta de pontuação que tem valor prognóstico em pacientes com infarto agudo do miocárdio com supradesnivelamento do segmento ST (IAMCSST). Objetivos Este estudo objetivou investigar o valor preditivo do escore CHA2DS2-VASc para o rSS em pacientes com IAMCSST. Métodos Foram avaliados 688 pacientes consecutivos com IAMCSST submetidos à intervenção coronária percutânea. Além do escore CHA2DS2-VASc, variáveis demográficas e clínicas de referência foram analisadas. Os pacientes foram divididos em dois grupos: grupo 1 - indivíduos com rSS até 8 (509 pacientes); grupo 2 - aqueles com rSS acima de 8 (179 pacientes). Valores p<0,05 foram considerados estatisticamente significativos. Resultados O escore CHA2DS2-VASc foi maior no grupo 2 [1 (0-2); 1 (1-3), p<0,001] comparado ao grupo 1. A incidência de hipertensão [151 (29,7%); 73 (40,8%), p=0,006], idade ≥75 anos [18 (3,5%); 21 (11,7%), p<0,001], diabetes mellitus [85 (16,7%); 50 (27,9%), p=0,001] e doença vascular [12 (2,4%); 11 (6,1%), p=0,029] foi maior no grupo 2. Na análise de regressão logística multivariada, o escore CHA2DS2-VASc (odds ratio — OR=1,355; intervalo de confiança de 95% — IC95%=1,171-1,568; p<0,001), idade ≥75 anos [OR=3,218; IC95%=1,645-6,295; p=0,001] e diabetes mellitus [OR=1,670; IC95%=1,091-2,557; p=0,018] foram preditores independentes de rSS elevado. A análise da curva receiver-operating characteristic demonstrou o bom valor preditivo do escore CHA2DS2-VASc para rSS elevado com valor de corte de 1,5 (área sob a curva/area under the curve — AUC= 0,611, IC95%=0,562-0,659, p<0,001). Conclusões O escore CHA2DS2-VASc tem valor preditivo para rSS em pacientes com IAMCSST. Além disso, o escore CHA2DS2-VASc foi um preditor independente de rSS mais alto.

Abstract Background The CHA2DS2-VASc score is associated with adverse clinical outcomes in patients with cardiovascular disease. The residual Syntax score (rSS) is a scoring tool which has prognostic value in patients with ST segment elevation myocardial infarction (STEMI). Objectives Our aim in this study is to investigate the predictive value of the CHA2DS2-VASc score on rSS in STEMI patients. Methods A total of 688 consecutive patients with STEMI undergoing percutaneous coronary intervention were evaluated. Baseline demographic and clinical variables besides the CHA2DS2-VASc score were assessed. The patients were divided into two groups; patients with rSS of 8 or below as group 1 (509 patients) and more than 8 as group 2 (179 patients). A p-value < 0.05 was considered statistically significant. Results The CHA2DS2-VASc score was higher in group 2 [1 (0-2); 1 (1-3), p<0.001] compared to group 1. The incidence of hypertension [151 (29.7%); 73 (40.8%), p=0.006], patients ≥75 years [18 (3.5%); 21 (11.7%), p<0.001], diabetes mellitus [85 (16.7%); 50 (27.9%), p=0.001] and vascular disease [12 (2.4%); 11 (6.1%), p=0.029] were higher in group 2. In multivariate logistic regression analysis, the CHA2DS2-VASc score (OR=1.355; 95%CI=1.171-1.568; p<0.001), age ≥75 years [OR=3.218; 95%CI=1.645-6.295; p=0.001] and diabetes mellitus [OR=1.670; 95%CI=1.091-2.557; p=0.018] were independent predictors of high rSS. The receiver-operating characteristic curve analysis demonstrated that the CHA2DS2-VASc score had good predictive value for high rSS with a cut-off value of 1.5 (area under curve (AUC): 0.611, 95% confidence interval (CI):0.562-0.659, p<0.001). Conclusions The CHA2DS2-VASc score has a predictive value on rSS in patients with STEMI. The CHA2DS2-VASc score was also an independent predictor of higher rSS.

The Predictive Value of CHA2DS2-VASc Score on Residual Syntax Score in Patients With ST Segment Elevation Myocardial Infarction. / O Valor Preditivo do Escore CHA2DS2-VASc no Escore Syntax Residual em Pacientes com Infarto do Miocárdio com Supradesnivelamento do Segmento ST.

BACKGROUND: The CHA2DS2-VASc score is associated with adverse clinical outcomes in patients with cardiovascular disease. The residual Syntax score (rSS) is a scoring tool which has prognostic value in patients with ST segment elevation myocardial infarction (STEMI). OBJECTIVES: Our aim in this study is to investigate the predictive value of the CHA2DS2-VASc score on rSS in STEMI patients. METHODS: A total of 688 consecutive patients with STEMI undergoing percutaneous coronary intervention were evaluated. Baseline demographic and clinical variables besides the CHA2DS2-VASc score were assessed. The patients were divided into two groups; patients with rSS of 8 or below as group 1 (509 patients) and more than 8 as group 2 (179 patients). A p-value < 0.05 was considered statistically significant. RESULTS: The CHA2DS2-VASc score was higher in group 2 [1 (0-2); 1 (1-3), p<0.001] compared to group 1. The incidence of hypertension [151 (29.7%); 73 (40.8%), p=0.006], patients ≥75 years [18 (3.5%); 21 (11.7%), p<0.001], diabetes mellitus [85 (16.7%); 50 (27.9%), p=0.001] and vascular disease [12 (2.4%); 11 (6.1%), p=0.029] were higher in group 2. In multivariate logistic regression analysis, the CHA2DS2-VASc score (OR=1.355; 95%CI=1.171-1.568; p<0.001), age ≥75 years [OR=3.218; 95%CI=1.645-6.295; p=0.001] and diabetes mellitus [OR=1.670; 95%CI=1.091-2.557; p=0.018] were independent predictors of high rSS. The receiver-operating characteristic curve analysis demonstrated that the CHA2DS2-VASc score had good predictive value for high rSS with a cut-off value of 1.5 (area under curve (AUC): 0.611, 95% confidence interval (CI):0.562-0.659, p<0.001). CONCLUSIONS: The CHA2DS2-VASc score has a predictive value on rSS in patients with STEMI. The CHA2DS2-VASc score was also an independent predictor of higher rSS.

FUNDAMENTO: O escore CHA2DS2-VASc está associado a desfechos clínicos adversos em pacientes com doença cardiovascular. O escore Syntax residual (residual Syntax score ­ rSS) é uma ferramenta de pontuação que tem valor prognóstico em pacientes com infarto agudo do miocárdio com supradesnivelamento do segmento ST (IAMCSST). OBJETIVOS: Este estudo objetivou investigar o valor preditivo do escore CHA2DS2-VASc para o rSS em pacientes com IAMCSST. MÉTODOS: Foram avaliados 688 pacientes consecutivos com IAMCSST submetidos à intervenção coronária percutânea. Além do escore CHA2DS2-VASc, variáveis demográficas e clínicas de referência foram analisadas. Os pacientes foram divididos em dois grupos: grupo 1 ­ indivíduos com rSS até 8 (509 pacientes); grupo 2 ­ aqueles com rSS acima de 8 (179 pacientes). Valores p<0,05 foram considerados estatisticamente significativos. RESULTADOS: O escore CHA2DS2-VASc foi maior no grupo 2 [1 (0­2); 1 (1­3), p<0,001] comparado ao grupo 1. A incidência de hipertensão [151 (29,7%); 73 (40,8%), p=0,006], idade ≥75 anos [18 (3,5%); 21 (11,7%), p<0,001], diabetes mellitus [85 (16,7%); 50 (27,9%), p=0,001] e doença vascular [12 (2,4%); 11 (6,1%), p=0,029] foi maior no grupo 2. Na análise de regressão logística multivariada, o escore CHA2DS2-VASc (odds ratio ­ OR=1,355; intervalo de confiança de 95% ­ IC95%=1,171­1,568; p<0,001), idade ≥75 anos [OR=3,218; IC95%=1,645­6,295; p=0,001] e diabetes mellitus [OR=1,670; IC95%=1,091­2,557; p=0,018] foram preditores independentes de rSS elevado. A análise da curva receiver-operating characteristic demonstrou o bom valor preditivo do escore CHA2DS2-VASc para rSS elevado com valor de corte de 1,5 (área sob a curva/area under the curve ­ AUC= 0,611, IC95%=0,562­0,659, p<0,001). CONCLUSÕES: O escore CHA2DS2-VASc tem valor preditivo para rSS em pacientes com IAMCSST. Além disso, o escore CHA2DS2-VASc foi um preditor independente de rSS mais alto.

A Novel Marker Indicating Restenosis in Superficial Femoral Artery: C Reactive Protein to Albumin Ratio.

BACKGROUND: In this study, we aimed to investigate the prognostic value of C-reactive protein (CRP) to albumin ratio (CAR) for predicting restenosis in superficial femoral artery (SFA) lesions and its association with subsequent clinical outcomes in patients undergoing endovascular intervention. METHODS: The records of 685 consecutive patients who underwent endovascular intervention due to symptomatic peripheral artery disease were analyzed. Patients were divided into 2 groups, based on the CAR values. For each group, technical aspects of procedures and subsequent clinical outcomes were analyzed. RESULTS: According to our study, patients with high CAR values had higher rates of restenosis (30.2% vs. 10.3%, P < 0.05) and mortality (31.3% vs. 12.9%, P < 0.05). The rate of lower extremity amputations was also significantly higher in patients with high CAR values compared to those with low CAR values (9.1% vs. 3%, P < 0.05). With respect to Receiver operating characteristic ROC curves of inflammatory markers, the area under the curve (AUC) value of CAR was statistically significant (AUC: 0.659; 95% confidence interval CI: 0.611-0.706; P < 0.01). CONCLUSIONS: Our data showed that CAR is an independent predictor of restenosis and poor clinical outcomes in patients undergoing endovascular intervention.

Frontal QRS-T angle is related with hemodynamic significance of coronary artery stenosis in patients with single vessel disease.

OBJECTIVE: Fractional flow reserve (FFR) measurement is used to decide the hemodynamic significance of coronary artery lesion. QRS-T angle (QRSTa) is a novel marker of myocardial repolarization abnormality and is affected by obstructive coronary artery disease. The aim of the present study was to evaluate the association between QRSTa and coronary FFR measurement in patients with isolated left anterior descending (LAD) artery stenosis. METHODS: A total of 197 patients undergoing FFR measurement for isolated LAD artery stenosis were retrospectively enrolled in the present study. According to FFR value, patients were divided into two groups as 139 patients with normal FFR (>0.80, group 1) and 58 patients with low FFR (≤0.80, group 2). A 12-lead surface electrocardiography of all subjects that had been recorded before performing coronary angiography was evaluated to measure QRSTa, as well as baseline demographic and clinical variables. RESULTS: The mean age of group 2 was significantly higher than that of group 1 (61±11 and 64±11, p=0.044). While there were no differences in heart rate, QRS duration, and corrected QT interval between the two groups, QT interval [377 (359-397) and 379 (367-410), p=0.045] and frontal QRSTa [59 (10-120) and 86 (22-132), p<0.001] were higher in group 2. QT interval [odds ratio (OR)=1.046, 95% confidence interval (CI)=1.010-1.084, p=0.012] and frontal QRSTa (OR=1.025, 95% CI=1.010-1.041, p=0.001) were found to be independent predictors of low FFR value in multivariate logistic regression analysis. CONCLUSION: In the present study, FFR measurement was demonstrated to be correlated with wide QRSTa as a noninvasive and easy method. Thus, we suggest that the results of FFR measurement as an invasive modality can be previously predicted with a simple electrocardiographic evaluation, such as QRSTa.