Ventricular Aneurysm: Diagnosis and Treatment

Novel Analysis of Coronary Angiography in Predicting the Formation of Ventricular Aneurysm in Patients With Acute Myocardial Infarction After Percutaneous Coronary Intervention

Background

Ventricular aneurysm (VA) is a serious complication of acute myocardial infarction (AMI), with a very poor prognosis. Early-stage prophylactic treatment is effective in preventing the formation of VAs. However, the existing predictive models for VA formation lack the sensitivity and specificity necessary for evaluating patients with MI. This study aimed to explore the potential use of coronary angiography and establish a more precise prediction model for VA in patients with MI.

Methods

Patients with VA (n = 52) admitted to our medical center between June 2020 and July 2021 with previous emergency percutaneous coronary intervention for AMI were retrospectively included in this database study. Controls that matched 4:1 with the VA cases during the same period were enrolled. The baseline characteristics and coronary angiograms of the enrolled individuals were obtained from the electronic medical record system. The curve length of the distance from the main criminal lesion to its ostia (DLO) and distal (DLD) in the coronary artery were measured with ImageJ. Binary logistic regression analysis was used to identify the predictive factors. The model performance was evaluated by receiver operating characteristic curve analysis.

Results

Binary analysis revealed maximum serum cardiac troponin I level (odds ratio [OR] = 1.046, 95% confidence interval [CI] = 1.027–1.066, P < 0.001), serum brain natriuretic peptide level (OR = 1.001, 95% CI = 1.000–1.002, P = 0.007), left anterior descending artery as the culprit lesion (OR = 5.091, 95% CI = 2.080–12.457, P < 0.001), and that single-vessel disease (OR = 1.809, 95% CI = 0.967–3.385, P < 0.001), stenosis in the main lesion (OR = 1.247, 95% CI = 1.173–1.327, P < 0.001), DLO (OR = 1.034, 95% CI = 1.019–1.049, P < 0.001), DLD (OR = 1.061, 95% CI = 1.043–1.079, P < 0.001), and DLD/DLD (OR = 0.033, 95% CI = 0.010–0.117, P < 0.001) were the independent variables for predicting VA formation in MI patients.

Conclusion

Our study first used quantified information of coronary lesions to establish a predictive model and proved that a longer DLD had the greatest potential in predicting the incidence of VA. Its related parameters including DLO and DLO/DLD ratio were also correlated with the incidence of VA. These findings may provide a new reference for the early identification of high-risk MI patients and preventing VA.

Predictors and long-term prognosis of left ventricular aneurysm in patients with acute anterior myocardial infarction treated with primary percutaneous coronary intervention in the contemporary era

BACKGROUND

Primary percutaneous coronary intervention (PCI) has been the standard reperfusion strategy for patients with acute myocardial infarction (AMI) in the contemporary era. Meanwhile, the incidence and prognosis of left ventricular aneurysm (LVA) in AMI patients remain ambiguous. The aim of the current study is to identify the predictor and long-term prognosis of LVA in patients with acute anterior myocardial infarction.

METHODS

We prospectively enrolled 942 consecutive patients with acute anterior myocardial infarction who were treated by primary PCI. The baseline characteristics, procedural features, and one-year clinical outcomes were compared between the patients with and without LVA. The primary endpoint of major adverse cardiovascular and cerebrovascular events (MACCEs) was defined as a composite of cardiac death, target vessel revascularization, and ischemic stroke. Multiple logistic regression was applied to predict LVA formation and the receiver operating characteristic (ROC) curves were plotted to evaluate the accuracy of the multivariate analysis model.

RESULTS

The general incidence of LVA was 15.92%. At one-year clinical follow-up, patients in the LVA group had significantly higher incidence of MACCEs (15.33% vs. 6.44%, P<0.01), mainly driven by an increased incidence of cardiac death (8.00% vs. 2.78%, P<0.01), target vessel revascularization (5.33% vs. 2.27%, P=0.03), and ischemic stroke (4.00% vs. 1.39%, P=0.03). Multivariate analysis found that longer symptom-to-balloon time (S2B) [odds ratio (OR): 1.16, 95% confidence interval (CI): 1.11-1.21, P<0.01], higher initial and residual SYNTAX score (iSS, OR: 1.19, 95% CI: 1.14-1.24, P<0.01; rSS, OR: 1.33, 95% CI: 1.22-1.45, P<0.01), lower left ventricular ejection fraction (LVEF) (OR: 1.15, 95% CI: 1.11-1.18, P<0.01), and persistent ST segment elevation (OR: 1.89, 95% CI: 1.06-3.38, P=0.03) were independent predictors of LVA formation.

CONCLUSIONS

LVA is still common in patients with acute anterior myocardial infarction in the contemporary PCI era, and the prognosis of these patients was significantly worse during the one-year clinical follow-up. Strategies of prompt reperfusion and complete revascularization may be helpful in preventing LVA formation and improving clinical outcomes.

Radiological and hemodynamic parameters in patients with suspected ventricular aneurysm and interventricular septal perforation after acute myocardial infarction: A comparison of non-invasive and invasive diagnostic modalities

Transthoracic echocardiography is a rapid, sensitive and non-invasive technique for diagnosing ventricular septal perforation. Furthermore, left ventricular angiography is generally used for left ventricular aneurysm but right heart catheterization is the gold standard for septal perforation following myocardial infarction. The objectives of the present study were to compare radiological and hemodynamic diagnostic parameters of non-invasive methods with those of right heart catheterization in patients with suspected ventricular aneurysm and interventricular septal perforation after acute myocardial infarction. Data regarding demographics and clinical characteristics, as well as right heart catheterization, echocardiography and angiographic parameters of 199 patients examined within 21 days after myocardial infarction due to suspected ventricular septal defect indicated by persistent colic pain in the pre-cardiac region were collected and analyzed. Coronary angiography identified 149 (75%) patients with single-vessel disease, 42 (21%) patients with two-vessel disease and 8 (4%) patients with triple-vessel disease. Transthoracic color Doppler echocardiography strengthened the diagnostic performance of right heart catheterization regarding segmental motor abnormalities but underestimated the right atrial pressure, systolic pulmonary artery pressure, mean pulmonary artery pressure and pulmonary capillary wedge pressure compared with right heart catheterization (P<0.0001 for all). Overall, there was no procedural complication requiring emergency intervention, no major complications and no conditions resulting in death due to diagnostic modalities. Transthoracic color Doppler echocardiography may strengthen the diagnostic performance of right heart catheterization regarding radiological measurements but underestimated hemodynamic measurements (level of evidence: 3).