Congenital Sub-Mitral Aneurysm: Anesthetics and Surgical Management.

ABSTRACT: A sub-mitral left ventricular aneurysm is a rare condition. It is a congenital outpouching of the left ventricular wall, invariably occurring adjacent to the posterior mitral leaflet. Sub-mitral aneurysm (SMA) has usually been reported as a consequence of myocardial ischemia (MI), rheumatic heart disease, tuberculosis, and infective endocarditis. Nevertheless, there have been few case reports of congenital SMA in India. It usually presents with symptoms of heart failure. We report a rare case of congenital SMA in a 27-year-old young Indian and its successful management through a trans-aneurysmal approach.

Ventricular Pseudoaneurysm and Free Wall Rupture After Acute Myocardial Infarction: JACC Focus Seminar 4/5.

Postinfarction ventricular free-wall rupture is a rare mechanical complication, accounting for <0.01% to 0.02% of cases. As an often-catastrophic event, death typically ensues within minutes due to sudden massive hemopericardium resulting in cardiac tamponade. Early recognition is pivotal, and may allow for pericardial drainage and open surgical repair as the only emergent life-saving procedure. In cases of contained rupture with pseudo-aneurysm (PSA) formation, hospitalization with subsequent early surgical intervention is warranted. Not uncommonly, PSA may go unrecognized in asymptomatic patients and diagnosed late during subsequent cardiac imaging. In these patients, the unsettling risk of complete rupture demands early surgical repair. Novel developments, in the field of transcatheter-based therapies and multimodality imaging, have enabled percutaneous PSA repair as a feasible alternate strategy for patients at high or prohibitive surgical risk. Contemporary advancements in the diagnosis and treatment of postmyocardial infarction ventricular free-wall rupture and PSA are provided in this review.

Postmyocardial Infarction Ventricular Aneurysm: JACC Focus Seminar 5/5.

Ventricular aneurysm represents a rare complication of transmural acute myocardial infarction, although other cardiac, congenital, or metabolic diseases may also predispose to such condition. Ventricular expansion includes all the cardiac layers, usually with a large segment involved. Adverse events include recurrent angina, reduced ventricular stroke volume with congestive heart failure, mitral regurgitation, thromboembolism, and ventricular arrhythmias. Multimodality imaging is paramount to provide comprehensive assessment, allowing for appropriate therapeutic decision-making. When indicated, surgical intervention remains the gold standard, although additional therapy (heart failure, anticoagulation, and advanced antiarrhythmic treatment) might be required. However, the STICH (Surgical Treatment for Ischemic Heart Failure) trial did not show any advantage from adding surgical ventricular reconstruction to coronary artery bypass surgery in terms of survival, rehospitalization or symptoms, compared with revascularization alone. Finally, implantable cardiac defibrillator may reduce the risk of fatal arrhythmias.

[Giant Post-infarction Left Ventricular Pseudoaneurysm Diagnosed Soon After the Onset of Cerebral Infarction:Report of a Case].

A 59-year-old man was admitted to our hospital with left hemiplegia. A computed tomography( CT) scan and echocardiography revealed a cerebral infarction in the right middle cerebral artery's territory, as well as a large pseudoaneurysm (4×3 cm) of the lateral left ventricular wall. The patient agreed to undergo cardiac surgery because of the high risk of rupture and recurrent cerebral infarctions. Owing to the high probability of damaging the posterior papillary muscle and coronary arteries, an extracardiac approach was used, and the pseudoaneurysm cavity was closed using double-patch repair. The patient was discharged from the hospital on the 12th postoperative day without any complications. Both postoperative CT and echocardiography showed closure of the cavity.

Ventricular apical wall rupture and ventricular aneurysm formation concurrent with ventricular septal dissection and rupture due to ST-segment elevation myocardial infarction: a case report.

The most common mechanical complications of acute myocardial infarction include free-wall rupture, ventricular septal rupture (VSR), papillary muscle rupture and pseudoaneurysm. It is rare for a patient to experience more than one mechanical complication simultaneously. Here, we present a case of ST-segment elevation myocardial infarction (STEMI) complicated with three mechanical complications, including ventricular apical wall rupture, ventricular aneurysm formation and ventricular septal dissection (VSD) with VSR. Cardiac auscultation revealed rhythmic S1 and S2 with a grade 3 holosystolic murmur at the left sternal border. Electrocardiogram indicated anterior ventricular STEMI. Serological tests showed a significant elevated troponin I. Bedside echocardiography revealed ventricular apical wall rupture, apical left ventricle aneurysm and VSD with VSR near the apex. This case demonstrates that several rare mechanical complications can occur simultaneously secondary to STEMI and highlights the importance of bedside echocardiography in the early diagnosis of mechanical complications.

Surgical treatment for a child with traumatic ventricular septal rupture and ventricular aneurysm.

A five-year-old boy was diagnosed with the ventricular septal rupture and ventricular aneurysm after blunt chest trauma in child abuse. Because of the intractable heart failure, he underwent operation in subacute period. Postoperative course was uneventful. The blunt cardiac injury in children can be caused by mild trauma and can be lethal. Surgical intervention should be considered when the clinical condition is unstable.

Isolated mitral valve aneurysm in a 9-year old boy.

BACKGROUND: Isolated mitral valve aneurysm is rarely reported in children. In most cases it is associated with an underlying disease such as infective endocarditis. MVA can lead to severe complications that needs surgical intervention. CASE: In this report, we present a 9-year old asymptomatic male patient with anterior mitral valve aneurysm and rhythm disturbance diagnosed incidentally during pre-operative evaluation. CONCLUSIONS: Being rare in children, isolated MVA should be kept in mind in the differential diagnosis of mass lesions seen on the atrial side of the mitral valve. A 24-hour electrocardiogram may define subtle rhythm disturbances in these patients.

[Giant Left Ventricular Aneurysm After Double Patch Closure of Ventricular Septal Perforation Through Right Ventriculotomy].

A 66-year-old man. He had myocardial infarction due to occlusion of the left anterior descending branch, which was subsequently complicated by ventricular septal perforation. Ventricular septal perforation was repaired through right ventricle incision, applying double patches for closure, and injecting glue between the patches. The early postoperative course was good, but the infarcted left ventricular anterior wall remained because of the right ventriculotomy approach. A left ventricular aneurysm was demonstrated on postoperative follow-up echocardiography, which gradually enlarged to become giant. Since symptoms of heart failure such as respiratory distress appeared, left ventriculoplasty was performed 29 months after the perforation of the initial surgery. Since thinned left ventricular wall remains following right ventriculotomy approach, risk of postoperative left ventricular aneurysm should be taken into account.

Ignored Role of Paroxysmal Atrial Fibrillation in the Pathophysiology of Cryptogenic Stroke in Patients with Patent Foramen Ovale and Atrial Septal Aneurysm.

The association between cryptogenic stroke (CS) and patent foramen ovale (PFO) with or without atrial septal aneurysm (ASA) has been a debate for decades in terms of pathophysiologic processes and clinical courses. This issue has become more interesting and complex, because of the concerns associating the CS with so-called normal variant pathologies of interatrial septum, namely ASA and PFO. While there is an anatomical pathology in the interatrial septum, namely PFO and ASA, the embolic source of stroke is not clearly defined. Moreover, in patients with PFO and CS, the risk of recurrent stroke has also been associated with other PFOunrelated factors, such as hyperlipidemia, body mass index, diabetes mellitus, and hypertension, leading to the difficulty in understanding the pathophysiologic mechanism of CS in patients with PFO and/or ASA. Theoretically, the embolic source of cryptogenic stroke in which PFO and/or ASA has been involved can be categorized into three different anatomical locations, namely PFO tissue and/or ASA tissue itself, right or left atrial chambers, and venous vascular territory distal to the right atrium, i.e., inferior vena cava and lower extremity venous system. However, the possible role of paroxysmal atrial fibrillation associated with PFO and/or ASA as a source of cryptogenic stroke has never been mentioned clearly in the literature. This review aims to explain the association of cryptogenic stroke with PFO and/or ASA in a comprehensive manner, including anatomical, clinical, and mechanistic aspects. The potential role of paroxysmal atrial fibrillation and its contribution to clinical course have been also discussed in a hypothetical manner to elucidate the pathophysiology of CS and support further treatment modalities.

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

AIMS: 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). METHODS AND RESULTS: 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). CONCLUSIONS: A higher BAR was an independent predictor for LVA formation in STEMI patients with primary PCI.

Rare complications of infective endocarditis in marfan-like morphotype: diagnosis of multiple mitral valve aneurysms and aortic root abscess using three-dimensional transesophageal echocardiography.

Mitral valve aneurysm (MVA) is characterized by a saccular outpouching of the mitral leaflet, and it represents a rare condition typically associated with aortic valve endocarditis. Three-Dimensional Transesophageal Echocardiography (3D-TEE) serves as an effective tool for detecting the presence of MVA and its potential complications. In this report, we present a case involving a young man with striking images of bicuspid aortic valve endocarditis complicated by an aortic root abscess and multiple perforated mitral valve aneurysms, diagnosed using 3D TEE. This case suggests the uncommon coexistence of Marfan like morphotype, bicuspid aortic valve, and infective endocarditis as a triple mechanism in the occurrence of MVA. It underscores the significance of early and accurate imaging diagnosis for facilitating prompt surgical intervention.