Acute ST-segment Elevation Myocardial Infarction Research Articles

MiR-619-5p and cardiogenic shock in patients with ST-segment elevation myocardial infarction.

Cardiogenic shock (CS) is a severe myocardial dysfunction secondary to various cardiac conditions including ST-segment elevation acute myocardial infarction (STEMI) and associated with a high risk of death. Little is known on epigenetic determinants in CS. Here, we investigated plasma miRNAs in relation to CS stratification in STEMI-patients. STEMI-patients (n = 49), with (CS, n = 25) and without CS (non-CS, n = 24) fulfilling inclusion criteria were included from HSCSP-cohort (Derivation-cohort). CS-miRNAs were analysed by Affymetrix-microarray and RT-PCR. Results were validated in a second cohort of CS-patients (CardShock: n = 35) with similar inclusion/exclusion criteria as the derivation cohort. In silico analysis were performed to identify potential miRNA target genes. Of the 5-miRNA signature obtained from microarray analysis, miR-619-5p showed higher levels in CS than in Non-CS patients (p = .003) and discriminating power for CS by ROC (AUC: .752, p = .003). miR-619-5p directly associated with risk scores [GRACE, p = .001; CardShock, p < .001]. Furthermore, miR-619-5p showed discrimination power for death in CS. Thus, miRNA levels were significantly higher in patients with mortality outcome both in the Derivation HSCSP-cohort (p = .02; AUC: .78 ± .095) and the Validation CardShock-cohort (p = .017; AUC: .737 ± .086) By in silico analysis, miR-619-5p target genes and TNF-alpha were involved in the regulation of inflammation. miR-619-5p and TNF-alpha levels discriminated mortality outcome in CS-patients during 30-day follow-up (Validation-Cohort: ROC: .812, p = .002; HR: 9.99, p = .003). Up-regulation of miR-619-5p is found in the plasma of STEMI-patients with CS and mortality outcome. These findings highlight the specificity of epigenetic regulation of inflammation on the disease severity of MI.

Long-term all-cause death prediction by coronary, aortic, and valvular calcification in patients with acute ST-segment elevation myocardial infarction.

To determine the prognostic value of cumulative calcification score of coronary artery calcification (CAC), thoracic aortic calcification (TAC) and aortic valve calcification (AVC) in acute ST segment elevation myocardial infarction (STEMI) patients. This was a retrospective, single-center cohort study. A total of 332 STEMI patients who received primary percutaneous coronary intervention (PPCI) were enrolled in this study between January 2010 to October 2018. We assessed the calcification in the left anterior descending branch (LAD), left circumflex branch (LCX), right coronary artery (RCA), thoracic aorta, and aortic valve. Calcification of each part was counted as 1 point, and the cumulative calcification score was calculated as the sum of all points. The primary endpoint was all-cause mortality. Multivariate Cox proportional hazards models were used to determine association of cumulative calcification score with end points. The performance of the score was evaluated by receiver operating characteristic (ROC) curve analysis and absolute net reclassification improvement (NRI), compared with the Global Registry of Acute Coronary Events (GRACE) risk score. The overall population's calcification score was 2.0 ± 1.6. During a mean follow-up time of 69.8 ± 29.3 months, the all-cause mortality rate was 12.1%. Kaplan-Meier curve showed that the score was significantly associated with mortality (log-rank p < 0.001). The multivariable Cox proportional hazard analyses showed that a calcification score of 4-5 was independently associated with all-cause death in STEMI patients [hazard ratio (HR) = 2.32, 95% confidence interval (CI): 1.01-5.31, p = 0.046]. The area under the ROC curve (AUC) of the calcification score was 0.67 (95% CI: 0.61-0.72), and the AUC of the GRACE score was 0.80 (95% CI: 0.75-0.84). There was no statistical difference in the predictive value between both scores for 3-year mortality in STEMI patients after PPCI (p = 0.06). Based on the NRI analysis, the calcification score showed better risk classification compared with the GRACE score (absolute NRI = 6.63%, P = 0.027). The cumulative calcification score is independently associated with the long-term prognosis of STEMI patients after PPCI.

The Impact of the Neutrophil-to-Lymphocyte Ratio on In-Hospital Outcomes in Patients With Acute ST-Segment Elevation Myocardial Infarction.

Introduction The neutrophil-to-lymphocyte ratio (NLR) is a significant predictor of cardiovascular diseases, influencing their progression and prognosis. The exact role of the NLR in acute ST-segment elevation myocardial infarction (STEMI) is unclear. We investigated the possible association between peak NLR values within the first three days after STEMI onset and in-hospital outcomes in patients undergoing primary percutaneous coronary intervention (PCI). Methods This retrospective study included 641 patients who were diagnosed with acute STEMI and treated with primary PCI for 18 months at Dr. Siyami Ersek Hospital. The NLR was calculated using the maximum values obtained during the first three days after admission. The patients were divided into quartiles according to their NLR values for further analysis of potential complications during and after hospitalization, up to a follow-up period of three months. Results Significant differences were found in factors such as age, body mass index (BMI), and length of hospital stay among these groups. Specifically, we found that in-hospital mortality rates were significantly higher in the Q4 group, and there were variations in target vessel revascularization (TVR) rates, major adverse cardiac events (MACE) rates, and other clinical outcomes. Some parameters, such as reinfarction rates and certain procedural outcomes, did not show significant differences among the groups. However, despite the differences, most of the patients achieved successful outcomes after PCI, with the best results in the low NLR group and the worst results in the high NLR group. Conclusion Higher NLR values were associated with a higher risk of unfavorable outcomes during hospitalization.

Factors in Predicting Short Term Mortality in ST Elevation Myocardial Infarction Patients Undergoing Primary Percutaneous Coronary Intervention

Background: Percutaneous coronary angiography and intervention have been applied in the diagnosis and treatment of coronary artery disease at Gia Dinh People's Hospital since April 2009 until now with very positive results, contributing to improving the quality of diagnosis and treatment. Treating cardiovascular patients with high technology. However, there is currently no research to help evaluate performance as well as prognostic factors affecting treatment outcomes at this unit. Therefore, we conducted this study with the research question: Short-term mortality rate in patients with ST-elevation acute myocardial infarction undergoing primary percutaneous coronary intervention at Gia Dinh People's Hospital. What is the year 2022 - 2023? What factors predict short-term mortality in patients with acute ST-segment elevation myocardial infarction undergoing primary percutaneous coronary intervention. Materials and methods: There were 163 patients at the Gia Dinh People's Hospital from November 2022 to September, 2023. This was a cohort study. Results: In-hospital and 30-day mortality rates after intervention were 4.29% and 4.91%, respectively. Short-term mortality prognostic factors include systolic blood pressure &lt; 100 mmHg, arrhythmia at admission, TIMI score &gt; 6, cardiogenic shock before the procedure, blood potassium concentration with mortality rate within 30 days after PCI, with p &lt; 0.05. Conclusion: In clinical practice, attention should be paid to factors predicting 30-day mortality in STEMI patients include systolic blood pressure &lt; 100 mmHg, arrhythmia at admission, TIMI score &gt; 6, cardiogenic shock before the procedure, blood potassium concentration with mortality rate within 30 days after PCI.

The CHA2DS2-Vasc Score's Role as A Standalone Predictor for Suboptimal Reperfusion and Short-Term Mortality Post Primary PCI in Individuals Diagnosed with Acute ST-Segment Elevation Myocardial Infarction

Background: The CHA2DS2-VASc score is an established clinical prediction tool for assessing stroke risk in patients with atrial fibrillation. However, its potential utility in predicting outcomes following primary percutaneous coronary intervention (PCI) in ST-segment elevation myocardial infarction (STEMI) has not been extensively explored. The no-reflow phenomenon and in-hospital mortality are critical endpoints in the management of STEMI patients undergoing PCI. Objective: This study aimed to evaluate the independent predictive value of the CHA2DS2-VASc score for suboptimal reperfusion and short-term mortality in patients with acute STEMI undergoing primary PCI. Methods: In a prospective cohort study involving 116 patients with confirmed STEMI at the National Institute of Cardiovascular Diseases in Karachi, participants were categorized based on their CHA2DS2-VASc score into low (&lt;3) and high (≥3) risk groups. Primary PCI was performed following standard treatment protocols, and variables such as initial TIMI flow, thrombus grade, and lesion complexity were documented. Statistical analysis, including multivariate regression, was conducted using SPSS Version 25. Results: Patients with a high CHA2DS2-VASc score (≥3) exhibited a significantly increased risk of no-reflow (p-value range 0.00-0.03) and in-hospital mortality (11.1%) compared to those with a low score (&lt;3; 1.3% mortality). Other significant findings included an association between high CHA2DS2-VASc scores and larger stent lengths (28.75±5.67 mm), smaller stent diameters (2.69±0.6 mm), higher creatinine levels (1.00±0.202 mg/dL), and increased incidence of diabetes mellitus (36.1%). The odds ratio for mortality associated with a high CHA2DS2-VASc score was 1.58 (95% CI: 1.14–2.13, p-value &lt; 0.00). Conclusion: The CHA2DS2-VASc score is a significant independent predictor of both no-reflow post-PCI and short-term in-hospital mortality in STEMI patients. These findings suggest the score's potential role in the pre-PCI risk stratification, which could guide clinical decision-making and potentially improve patient outcomes.

Examining the Outcomes of Hybrid Coronary Revascularization in Acute STEMI Patients from 2015 to 2022.

The global rise of chronic diseases, especially cardiovascular disease (CVD), poses a significant public health challenge, being a leading cause of death and disability worldwide. In Iran, the surge in CVD incidence and its risk factors, along with a decrease in the age of onset, has notably increased the reliance on coronary artery bypass grafting (CABG) as a life-saving intervention. Staged hybrid coronary revascularization (HCR), which combines percutaneous coronary intervention with delayed CABG, offers a novel approach for patients with complex coronary artery disease, potentially improving survival and reducing complications. Considering the newness of this treatment method and the limitations of previous studies, we investigated the results of staged HCR in acute ST-elevation myocardial infarction (STEMI) patients in this study. This observational study was performed on consecutive patients with acute STEMI who underwent staged HCR and were referred to Valiasr and Razi hospitals in Birjand from 2015 to 2022. The required information (demographic information, angiography result, and operation side effects) was collected in a checklist. If necessary, the patients were contacted by phone. After collecting the data, they were entered into SPSS version 16 software. This study was conducted on 33 patients with a mean age of 64.88 ± 9.24 years (69.7% male). The average hospital stay was 11.6 ± 8.9 days (3 to 72 days). The mean ejection fraction and syntax score were 36.5% ± 10.2% and 31.21 ± 6.7, respectively. Following surgery and during hospitalization, arrhythmias were observed, including 33.3% with premature ventricular contractions, 18.1% with atrial fibrillation, and 3.1% with ventricular tachycardia. The average number of pack cells (red blood cells that have been separated for blood transfusion) and creatinine changes before and after hybrid surgery were 640.9 ± 670.9 cc and 0.055 ± 0.07. In the follow-up, 9.09% of patients had late mortality, 6.1% of patients had urinary tract infections during hospitalization, 6.1% of patients had surgical site infections, 3.1% needed dialysis, and none of the studied patients had premature death or need for reintervention. The results of our study indicated that staged HCR performed early after an ACS is not associated with significant mortality or complications. Therefore, it is advisable to consider staged HCR as a surgical option in appropriate cases.

Serum circRNA (Circ)_0051386 assists in the diagnosis of acute ST-segment elevation myocardial infarction and prediction of the occurrence of major adverse cardiovascular events after percutaneous coronary intervention

Background This study aimed to uncover the diagnostic value of circRNA (Circ)_0051386 in acute ST-segment elevation myocardial infarction (STEMI) and its predictive value for the occurrence of adverse major adverse cardiovascular events (MACEs). Methods This study included 166 patients with STEMI and 83 health donors. The expression levels of serum Circ_0051386 in these participants were quantified using real-time quantitative polymerase chain reaction (RT-qPCR). Additionally, the incidence of MACEs during a 6-month follow-up period after percutaneous coronary intervention (PCI) was collected in the STEMI patient cohort. Results Before and after propensity score matching (PSM), Circ_0051386 all had higher expression levels in the patients with STEMI than the normal subjects (all p < .001)and robust diagnosis values for the STEMI (AUC = 0.766, 0.779). Kaplan–Meier curves showed the high expression Circ_0051386 group had a higher occurrence rate of MACEs during a 6-month follow-up after PCI in patients with STEMI and this phenomenon was confirmed by internal validation (all p < .05). In addition, the multivariate COX regression showed gensini score (HR = 1.020, 95% CI = 1.002 − 1.038, p = .028) and Circ_0051386 (HR = 2.468, 95% CI =1.548–3.935, p < .001)were independent risk factors of the occurrence of MACEs in patients with STEMI after PCI. Pearson analysis presented that Circ_0051386 was positively correlated with gensini scores (r = 0.33), IL-1β (r = 0.55)and TNF-α(r = 0.41). Conclusion Our study indicated that Circ_0051386 is a biomarker of the diagnostic for STEMI and the predictor of the MACEs in STEMI patients after PCI. Its potential role in STEMI may be the regulation of inflammation in the vascular endothelial.

Imbalance Between Angiotensin II and Kallikrein in Patients With ST-Segment Elevation Myocardial Infarction: A Case-Control Emergency Room Study.

The present study aimed to investigate the balance between angiotensin II (Ang-II) and kallikrein (KLK1) in the pathogenesis of ST-segment elevation acute myocardial infarction (STEMI). The study included a total of 261 participants: 151 STEMI patients and 110 individuals with normal coronary arteries. The plasma levels of Ang-II and KLK1 were measured using enzyme-linked immunosorbent assays (ELISA). Multivariate logistic regression analysis indicated that the plasma levels of Ang-II, KLK1 and the ratio of Ang-II and KLK1 (Ang-II/KLK1) independently correlated with the presence of STEMI. Furthermore, we found independent associations between STEMI and smoking, cholesterol (CHO), high-density lipoprotein cholesterol (HDL-c), as well as age. The ratio of Ang-II/KLK1 correlated with the plasma level of the inflammatory cytokine, interleukin-6 (IL-6). Both Ang-II and KLK1 levels are significantly elevated in patients with STEMI. An increased Ang-II/KLK1 ratio may result in the over-activation of Ang-II and exacerbate the progression of STEMI(P = .046). In conclusion, we have demonstrated, for the first time, an Ang-II and KLK1 imbalance in patients with STEMI.

Mortality of patients presented with acute ST-segment elevation myocardial infarction according to the status of standard modifiable cardiovascular risk factors

BackgroundStandard modifiable cardiovascular risk factors (SMuRFs) remain well-established elements of assessing cardiovascular risk scores. However, there is growing evidence that patients presented without known SMuRFs at admission demonstrate worse post-myocardial outcomes. The aim of the study was to assess the influence of the SMuRF status on short- and long-term mortality rates in patients with first-time ST-segment elevation myocardial infarction (STEMI). MethodsThis observational, cross-sectional study covered 182,726 patients admitted between 2003–2020 to the CathLabs, according to data from the Polish Registry of Acute Coronary Syndrome. Both baseline characteristics and mortality (in-hospital, 30-day, and 12-month) were examined and stratified by SMuRF status. The predictors of mortality were assessed at selected time points by multivariable analysis. ResultsThe majority of STEMI patients had at least one SMuRF (88.7%), however, mortality rates of SMuRF-less individuals were greater at selected time points of the follow-up (p < 0.001), and persisted at a higher level during each year of the follow-up period compared to the SMuRF group and general population. Furthermore, the SMuRFs status constituted an independent predictor of mortality at the 30-day (OR: 1.345; 95% CI: 1.142–1.585, p < 0.001) and 12-month (OR: 1.174; 95% CI: 1.054–1.308, p < 0.001) follow-ups. ConclusionsSMuRF-less individuals presented with STEMI are at an increased risk of all-cause mortality compared to those with at least one SMuRF. Consequently, further investigations regarding the recognition and treatment of risk factors, irrespective of SMuRF status, are indicated.

The Comparison of the Initial TIMI Flow Grade in Acute ST-Elevation Myocardial Infarction Patients Receiving Ticagrelor vs. Clopidogrel before Undergoing Primary Percutaneous Coronary Intervention: A Prospective Cohort Study.

Primary percutaneous coronary intervention (PCI) is the best treatment for acute ST-elevation myocardial infarction (STEMI). Evidence is in favor of ticagrelor over clopidegrel in STEMI patients regarding the reduction of stent thrombosis risk during and after PCI. We compared initial thrombolysis in myocardial infarction (TIMI) flow in STEMI patients on ticagrelor vs. clopidogrel. This prospective cohort recruited 160 patients with acute STEMI, referred to the emergency department of Farshchian Heart Center, during March 2018-2019. Before angiography, the patients received clopidogrel (600 mg) or ticagrelor (180 mg) on top of aspirin. Initial TIMI flow was compared between the two groups as the primary outcome. A logistic regression was performed to calculate the predictors of initial TIMI flow. Analyses were performed using R, version 4.2.1. In ticagrelor and clopidogrel groups, the mean ± standard deviation age of the patients was 59.46 ± 13.11 and 61.34 ± 11.08 years (p value = 0.33), respectively. In the ticagrelor and clopidogrel groups, initial TIMI flow grades were as follows: 0 : 50% and 71.2%, I: 26.2% and 16.2%, II: 12.5% and 10%, and III: 12.9% and 2.5%, respectively (p value = 0.005). Final TIMI flow grades were as follows: I: 26.2% and 16.2%, II: 7.5% and 13.8%, and III: 66.3% and 70%, respectively (p value = 0.41). Ticagrelor was associated with significantly higher initial TIMI flow grade compared to the clopidogrel group (adjusted odds ratio: 2.90 (95% CI: 1.51-5.72)). In STEMI patients who were candidates for primary PCI, ticagrelor administration led to a better initial TIMI flow grade compared to clopidogrel.

Tele-ECG improves diagnosis of acute coronary syndrome and ST-elevation myocardial infarction in Côte d'Ivoire.

The emergence of cardiovascular risk factors in sub-Saharan Africa suggests an increasing incidence of acute coronary syndromes and STEMI. The aim of the study was to define the prevalence of STEMI and to describe the characteristics of patients diagnosed with STEMI within the tele-electrocardiogram (ECG) network in Côte d'Ivoire. A retrospective study was conducted from January 2015 to August 2019. All adult patients managed by one of the six hospitals within the telemedicine network who benefited from a remote interpretation of their ECG by the cardiology department of Bouaké University Hospital were included. The main reason for ECG interpretation, patient and ECG characteristics, diagnosis, response time and treatment were described. A total of 5649 patients were included. The prevalence of STEMI was 0.7% (n = 44 cases) with a mean age of 58.6 ± 11.8 years and a M/F sex ratio of 1.93. Among STEMI patients, chest pain was the main reason for ECG testing (56.8%). Most ECGs were interpreted within 12 hours (72.8%). The anterior inter-ventricular artery location (59.1%, n = 26) was predominant. The Q wave of necrosis was absent in 18% (n = 8) of cases. All patients received double anti-platelet aggregation and 50% (n = 22) additional heparin therapy. No patient underwent primary angioplasty or thrombolysis, 65.9% (n = 29) were referred to the Bouaké Cardiology Department and 34.1% (n = 15) to the Abidjan Heart Institute. Scheduled angioplasty was performed in 20% (n = 3) of patients in Abidjan. Tele-ECG was an effective means of STEMI screening in Côte d'Ivoire. Systematic telethrombolysis of all patients diagnosed could improve their prognosis.

Prediction of in-hospital mortality in patients aged 75 years and older with acute ST-segment elevation myocardial infarction using logistic regression and classification tree

Aim. To study risk factors for in-hospital mortality in patients with acute myocardial infarction (MI) with ST-segment elevation (STEMI) aged ≥75 years.Material and methods. This retrospective analysis analyzed medical records of 174 patients aged ≥75 years hospitalized at the regional cardiology clinic due to STEMI in 2020-2021. There were 52 (29,9%) men. The median age for all patients was 81 [79; 85] year.Results. Inhospital mortality was 24,1%. Binary logistic regression revealed the following factors increasing the risk of inhospital mortality: cardiogenic shock (CS) — odds ratio (OR) 39,04; 95% confidence interval (CI): 8,87-171,74 (p&lt;0,001); ventricular tachycardia (VT) — OR=60,52; 95% CI: 5,21-703,45 (p=0,001); white blood cell (WBC) count — for each increase by 1×109/l — OR=1,15; 95% CI: 1,05-1,26 (p=0,002). At the same time, history of heart failure (CHF) reduced the death risk (OR=0,04; 95% CI: 0,009-0,21 (p&lt;0,001)). Classification tree found that 100% mortality was predicted in patients with CS and without diabetes and a history of MI and in patients with pulmonary edema and without CS, VT and HF. Mortality of 83,3% was predicted in patients without CS and without VT with a history of HF, WBC count ≥14,5×109/L and body mass index ≤23,7 kg/m2. In addition, mortality of 75,0% was predicted in patients without CS, but with VT, as well as in patients with CS without diabetes and with a history of MI. In patients with CABG and diabetes, the predicted mortality rate was 50,0%.Conclusion. The strongest factors associated with the risk of inhospital death were CS, VT, and high WBC count. The positive effect on the prognosis of pre-existing diseases, in particular HF, is apparently associated with the protective effect of previously taken therapy. This assumption needs to be confirmed based on prospective studies.

Ventricular septal defect complicating anterior acute myocardial infarction : A Case of transcatheter closure

IntroductionPost-infarction ventricular septal defect (PIVSD) is one of the most serious mechanical complications of acute myocardial infarction (AMI). Over the last decade, percutaneous closure is increasingly undertaken, with results similar to cardiac surgery. We present a case of ST-elevated anterior AMI, complicated by apical PIVSD successfully treated with transcatheter closure. Case ReportAn 83-year-old man was hospitalized for chest pain occurred 18 hours before, during the night time. He was an active smoker. Clinical examination revealed normal heart sounds and pulmonary bibasilar crackles. ST-segment elevation with deep T waves inversion in anterior leads were detected on the electrocardiogram. A mildly-reduced ejection fraction (40%) was found by transthoracic echocardiogram. The patient underwent emergency coronary angiography, which revealed a subocclusive stenosis of the mid left anterior descending artery with a TIMI 2 flow, treated by balloon angioplasty and drug-eluting stent. Four days after revascularization, the patient developed an acute deterioration with signs of decompensated heart failure and a new holosystolic murmur with large irradiation. Inotropic agents’ administration was required to maintain a precarious hemodynamic condition. A bedside Echo revealed an apical VSD, measuring 15 × 10 mm, with left-to-right shunting, and pulmonary hypertension. The patient was scheduled for transcatheter PIVSD closure. The procedure was performed under fluoroscopic guide. Two vascular access sites were placed, femoral arterial and right internal jugular vein. Through the right internal jugular vein, a 24-mm Amplatzer atrial septal occluder on a 9 French Amplatzer TREVISIO™ intravascular delivery system was advanced via right ventricle into the PIVSD. Contrast fluoroscopy was used to assess apposition and the degree of shunt reduction before release. Echocardiographic evaluation performed 48 hours later confirmed a correct apposition of the device with insignificant residual shunt. At 6 months follow-up, he was asymptomatic, with unchanged prosthetic findings. ConclusionPercutaneous closure has been emerged as a valid cost-effective alternative to surgery and should be advised. However, debate remains on the optimal preprocedural optimization, timing of repair and modality of treatment.

Recurrent events after acute ST-segment elevation myocardial infarction: predictors and features of plaque progression and stent failure.

Patients with acute ST-segment elevation myocardial infarction (STEMI) are at high risk for recurrent coronary events (RCE). Non-culprit plaque progression and stent failure are the main causes of RCEs. We sought to identify the incidence and predictors of RCEs. Eight hundred thirty patients with STEMI were enrolled and followed up for 5 years. All patients underwent blood test analysis at hospital admission, at 1-month and at 12-month follow-up times. Patients were divided into RCE group and control group. RCE group was further categorized into non-culprit plaque progression and stent failure subgroups. Among 830 patients with STEMI, 63 patients had a RCE (7.6%). At hospital admission, HDL was numerically lower in RCE group, while LDL at both 1-month and 12-month follow-up times were significantly higher in RCE group. Both HDL at hospital admission and LDL at 12-month follow-up were independently associated with RCEs (OR 0.90, 95% CI 0.81-0.99 and OR 1.041, 95% CI 1.01-1.07, respectively). RCEs were due to non-culprit plaque progression in 47.6% of cases, while in 36.5% due to stent failure. The mean time frame between pPCI and RCE was significantly greater for non-culprit plaque progression subgroup as compared to stent failure subgroup (27 ± 18 months and 16 ± 14 months, P = 0.032). RCEs still affect patients after pPCI. Low levels of HDL at admission and high levels of LDL at 12 months after pPCI significantly predicted RCEs. A RCE results in non-culprit plaque progression presents much later than an event due to stent failure.

Urea nitrogen-to-albumin ratio predicts ventricular aneurysm formation in ST-segment elevation myocardial infarction.

Left ventricular aneurysm (LVA) is an important complication of acute myocardial infarction. The aim of this study was to investigate the possible predictive value of blood urea nitrogen-to-albumin ratio (BAR) for the LVA formation in acute ST-segment elevation myocardial infarction (STEMI) patients who underwent primary percutaneous coronary intervention (PCI). A total of 1123 consecutive patients with STEMI were prospectively enrolled. The clinical and laboratory data were compared between LVA group and non-LVA group. Multivariable logistic regression analysis was performed to assess the independent risk factors of LVA formation. Predictive power of BAR and composite variable for LVA formation were assessed using receiver operating characteristic curve. LVA was detected in 162 patients (14.4%). The BAR was significantly higher in patients with LVA [0.16 (0.13-0.19) vs. 0.13 (0.10-0.17), P<0.001]. Multivariable logistic regression analysis revealed that left ventricular ejection fraction (LVEF) [odds ratio (OR)=0.865, P<0.001], culprit vessel-left anterior descending artery (LAD) (OR=4.705, P<0.001), and BAR (OR=2.208, P=0.018) were all independent predictors for LVA formation. The predictive value of BAR remained significant even after cross-validation by splitting population into training set (OR=1.957, P=0.034) and validation set (OR=1.982, P=0.039). The maximal length and width of LVA were significantly increased in patients with BAR≥0.15 when compared with BAR<0.15 (3.37±1.09 vs. 2.92±0.93, P=0.01, for maximal length, and 2.20±0.55 vs. 1.85±0.63, P=0.001, for maximal width). The discriminant power of BAR for LVA is 0.723, which is superior to both blood urea nitrogen (C statistic=0.586, P<0.001) and albumin (C statistic=0.64, P<0.001). The combination of BAR, LVEF, and culprit vessel-LAD could significantly increase the predictive ability (C statistic=0.874, P<0.001, for vs. BAR). Subgroup analysis of age, sex, hypertension, diabetes, smoking, LVEF, serum albumin, multiple-vessel disease, and Gensini score had no effect on the association between BAR and risk of LVA formation (P<0.05 for all subgroups). A higher BAR was an independent predictor for LVA formation in STEMI patients with primary PCI.

Management of Coronary Artery Perforation in Acute ST-Segment Elevation Myocardial Infarction

Background: Coronary Artery Perforation is a rare Percutaneous Coronary Intervention (PCI) complication which may lead to pericardial effusion frequently accompanied by tamponade. This complication occurs in 0.2 to 0.6% of all patients undergoing the procedures. The initial approach commonly comprises prolonged balloon inflation, placement of a covered stent graft (CSG), pericardiocentesis, or urgent coronary artery bypass graft (CABG) surgery.The aim: To present a patient with a type III Ellis classification of coronary artery perforation, who had previously underwent primary PCI due to an acute extensive anterior STEMI, and discussed its managementConclusion: Management of coronary artery perforation can be customized based on the categorization and hemodynamic condition of the hole. Our patient was effectively managed with extended balloon inflations and intra-coronary vitamin K administration without the need for surgical management intervention.

Arrhythmias in patients with acute ST-elevation myocardial infarction induced by various risk factors during the first day after myocardial reperfusion by primary percutaneous coronary intervention

Introduction. Acute coronary syndrome, in particular acute ST-elevation myocardial infarction (STEMI), is often accompanied by complex hemodynamically significant arrhythmias and conduction disorders. Such patients have a worse prognosis compared to patients with sinus rhythm. Arrhythmias in patients with STEMI are facilitated by the presence of comorbidities such as arterial hypertension, diabetes mellitus, obesity, and post-COVID-19 syndrome. The aim of the study. To elucidate the nature of arrhythmias in patients with acute STEMI induced by various risk factors during the first day after myocardial reperfusion by primary percutaneous coronary intervention. Materials and methods. The study involved 50 patients aged 45 to 83 years (average age – 63,4 ± 9,6 years; men – 70,97 %, women – 29,03 %), who were treated during 2021-2023 at the cardiology and reperfusion therapy department of Cardio-vascular center of ʺSaint Panteleimon Hospital in Lvivʺ and the infarction department of ʺLviv Regional Clinical Cardiological Centerʺ. The patients under investigation were subjected to daily electrocardiogram (ECG) monitoring for 24 hours after stenting of the infarct-related coronary artery, using a 7-channel ECG recorder Solvaig 06000.7 with computer processing of the recording using the DiaCard2 software. The obtained material was further subjected to software packages Microsoft Excel 2022, Statistica 10. Results. It was established that among supraventricular rhythm disturbances the most common were premature contractions, the average number of which per patient was significantly higher in the presence of obesity. Similarly high it was in post COVID-19 patients, as well as in those with hypertension. In post-coronavirus infection and in hypertension cases, extrasystoles were often in the form of pairs, triplets, bigemia, and trigemia; paroxysms of supraventricular tachycardia were also recorded in these patients. Among the ventricular arrhythmias also the most frequent were premature cardiac contractions, significantly more oftenly recorded in patients with hypertension and those experienced COVID-19; only in these patients were documented extrasystoles in the form of pairs, triplets, bigeminy, trigeminy, runs of ʺR to Tʺ, which are currently considered as harbingers of life-threatening ventricular arrhythmias. In the presence of hypertension and post-COVID-19, episodes of unstable ventricular tachycardia were also observed. Conclusions. In patients with STEMI, both supraventricular and ventricular premature contractions and episodes of supraventricular and unstable ventricular tachycardia are quite common during the first day after primary percutaneous coronary intervention with infarct-related coronary artery stenting, which is evidence of myocardial electrical instability. The nature of rhythm disturbances in the presence of hypertension and post-COVID-19 is prognostically unfavorable and indicates a higher risk of lifethreatening arrhythmias in these patients. Myocardial revascularization should be supplemented with optimal medical treatment in order to prevent the adverse cardiovascular events in post-STEMI patients. Further research should be directed toward elucidation of predictive value of detected arrhythmias with respect to the occurrence of unfavorable cardiovascular events in the early and long-term post-infarction period.

Day-night pattern of acute ST-segment elevation myocardial infarction onset in patients with obstructive sleep apnea.

Obstructive sleep apnea (OSA) is associated with acute nocturnal hemodynamic and neurohormonal abnormalities that may increase the risk of coronary events, especially during the nighttime. This study sought to investigate the day-night pattern of acute ST-segment elevation myocardial infarction (STEMI) onset in patients with OSA and its impact on cardiovascular adverse events. We prospectively enrolled 397 patients with STEMI, for which the time of onset of chest pain was clearly identified. All participants were categorized into non-OSA (n = 280) and OSA (n = 117) groups. The association between STEMI onset time and major adverse cardiovascular and cerebrovascular events was estimated by Cox proportional hazards regression. STEMI onset occurred from midnight to 5:59 am in 33% of patients with OSA, as compared with 15% in non-OSA patients (P < .01). For individuals with OSA, the relative risk of STEMI from midnight to 5:59 am was 2.717 [95% confidence interval (CI) 1.616 - 4.568] compared with non-OSA patients. After a median of 2.89 ± 0.78 years follow-up, symptom onset time was found to be significantly associated with risk of major adverse cardiovascular and cerebrovascular events in patients with OSA, while there was no significant association observed in non-OSA patients. Compared with STEMI presenting during noon to 5:59 pm, the hazard ratios for major adverse cardiovascular and cerebrovascular events in patients with OSA were 4.683 (95% CI 2.024 - 21.409, P = .027) for midnight to 5:59 am and 6.964 (95% CI 1.379 - 35.169, P = .019) for 6 pm to midnight, whereas the hazard ratios for non-OSA patients were 1.053 (95% CI 0.394 - 2.813, P = .917) for midnight to 5:59 am and 0.745 (95% CI 0.278 - 1.995, P = .558) for 6 pm to midnight. Patients with OSA exhibited a peak incidence of STEMI between midnight and 5:59 am, which showed an independent association with cardiovascular adverse events. Wang Y, Buayiximu K, Zhu T, etal. Day-night pattern of acute ST-segment elevation myocardial infarction onset in patients with obstructive sleep apnea. J Clin Sleep Med. 2024;20(5):765-775.

Association of Left Atrial Volume Index with Adverse In-Hospital Outcome in Patients with St-Elevated Acute Myocardial Infarction

Background: Coronary heart disease is the leading cause of death worldwide, with acute STEMI being the most severe manifestation. Left atrium (LA) plays a major role in left ventricular performance. LA function is a surrogate marker of LV diastolic dysfunction. In recent past, several studies conducted in different parts in the world have focused on the effect of ASTEMI on the volume and function of left atrium. So, assessment of left atrial volume index (LAVI) by 2D echocardiography in patients who have suffered an acute STEMI helps to predict the adverse cardiovascular outcome. Objective: The aim of the study is to assess the LAVI for prediction of adverse in-hospital outcomes following acute STEMI patients admitted in a tertiary care hospital. Methods: This Hospital based prospective observational study was conducted in the department of cardiology in DMCH over 1-year period. Patients with acute STEMI admitted in the CCU of DMCH were approached for inclusion in the study. Clinical and echocardiographic parameters were collected within 48 hours of admission. LA volume is measured and then indexed to body surface area called LA volume index (LAVI) and the population was divided according to LAVI. The study comprised of 150 acute STE-MI patients and were divided into two groups, including 75 patients in each group. Patients with LAVI&gt;34 ml/m2and LAVI≤34 ml/m2 were assigned as Group I and Group II respectively &amp; followed up for adverse in-hospital outcome. All necessary information were recorded in a pretested case record form. Statistical analyses were done by SPSS 17.0. Result: The mean age was 57.7 ± 7.0 years ranging from 39 to 80 years. Most of the patients were male 109 (72.7%). Majority of the patients had anterior wall ( anterior, antero-septal &amp; extensive anterior) myocardial infarction (85%).It was observed that patients with LAVI&gt;34 ml/m2(Group I) had more adverse in-hospital outcomes than patients with LAVI≤34 ml/m2( Group II) (46.7% vs 14.7 % ;p&lt; 0.001 ).By multivariate logistic regression analysis, LAVI&gt;34 ml/m2 emerged as an independent significant predictor of adverse in-hospital outcome(Odds Ratio 6.55,95% confidence interval: 2.069 – 20.735, p = 0.001 ) Conclusion: In patients with acute STEMI, with LAVI&gt;34 ml/m2 had more adverse in-hospital outcomes than patients with LAVI≤34 ml/m2. So early assessment of LAVI by echocardiography is useful to predict adverse in-hospital outcome. Bangladesh Heart Journal 2024; 39(1): 10-16

Validity of Computer-interpreted "Normal" and "Otherwise Normal" ECG in Emergency Department Triage Patients.

Chest pain is the second most common chief complaint for patients undergoing evaluation in emergency departments (ED) in the United States. The American Heart Association recommends immediate physician interpretation of all electrocardiograms (ECG) performed for adults with chest pain within 10 minutes to evaluate for the finding of ST-elevation myocardial infarction (STEMI). The ECG machines provide computerized interpretation of each ECG, potentially obviating the need for immediate physician analysis; however, the reliability of computer-interpreted findings of "normal" or "otherwise normal" ECG to rule out STEMI requiring immediate intervention in the ED is unknown. We performed a prospective cohort analysis of 2,275 ECGs performed in triage in the adult ED of a single academic medical center, comparing the computerized interpretations of "normal" and "otherwise normal" ECGs to those of attending cardiologists. ECGs were obtained with a GE MAC 5500 machine and interpreted using Marquette 12SL. In our study population, a triage ECG with a computerized interpretation of "normal" or "otherwise normal" ECG had a negative predictive value of 100% for STEMI (one-sided, lower 97.5% confidence interval 99.6%). None of the studied patients with these ECG interpretations had a final diagnosis of STEMI, acute coronary syndrome, or other diagnosis requiring emergent cardiac catheterization. In our study population, ECG machine interpretations of "normal" or "otherwise normal" ECG excluded findings of STEMI. The ECGs with these computerized interpretations could safely wait for physician interpretation until the time of patient evaluation without delaying an acute STEMI diagnosis.