Left ventricular pseudoaneurysm

Cardiac MRI in the diagnosis and management of left ventricular pseudoaneurysms with previous myocardial infarction: A report of two cases

A left ventricular pseudoaneurysm, an ominous consequence of acute myocardial infarction, poses a significant threat to patient well-being. Prompt and accurate diagnosis is crucial for improving patient outcomes. This report describes diagnostic imaging findings for identifying left ventricular pseudoaneurysms, emphasizing the critical role of cardiac magnetic resonance imaging alongside other modalities. We present two cases of patients with a history of myocardial infarction who presented with palpitations, chest pain, and shortness of breath. Initial 2D echocardiography in both patients revealed aneurysmal dilation of the left ventricle. Cardiac MRI was then performed, confirming the diagnosis in both cases.

Incidental diagnosis of a large left ventricular pseudoaneurysm

Left ventricular pseudoaneurysm is a rare complication of myocardial infarction and represent a myocardial rupture contained within a pericardial space limited by adhesions. Differentiating it from a left ventricular aneurysm can be a real diagnostic challenge. We report a case of a 50-year-old man admitted for symptoms of left heart failure. Transthoracic echocardiography and cardiac computed tomography scan incidentally showed a large lateral left ventricular pseudoaneurysm measuring 75/50 mm in diameter. Patch closure was carried out under cardiopulmonary bypass. Postoperative follow up was uneventful. This case demonstrates the increasing detection of «incidental» left ventricular pseudoaneurysm with more frequent use of multimodality imaging techniques including cardiac CT scan.

Percutaneous Treatment of a Left Ventricular Pseudoaneurysm Post-Aortic Valve Replacement

Left ventricular outflow tract pseudoaneurysm is rare but serious complication after aortic valve replacement and may occur secondarily to endocarditis, suture dehiscence, or morphologic changes at the aortic annulus. We present a case of successful percutaneous closure of a left ventricular outflow tract pseudoaneurysm using various cardiovascular imaging modalities.

Case report: pseudoaneurysm of left ventricle secondary to infective endocarditis complicated by cardiac rupture-a multimodality imaging approach

Background

Pseudoaneurysm (PSA) of the left ventricle (LV) is a rare peri-annular complication of infective endocarditis (IE), and it is associated with high risk of free wall rupture. The diagnosis is challenging because the exact incidence and the pathogenesis are still unclear.

Case summary

A 69-year-old lady underwent prosthetic mitral valve replacement for IE secondary to Staphylococcus aureus sepsis complicated by multiple embolizations. In the post-operative period, the patient developed persistent low-grade fever with negative blood culture. Transoesophageal echocardiography (TOE) revealed complete posterior valve detachment and a PSA sac arising from the antero-lateral commissure; the colour flow Doppler showed massive mitral regurgitation. Thoracic computed tomography (CT) scan confirmed the echo data and the exact localization of the cardiac rupture. The patient underwent reoperation, a pericardial patch was sutured to exclude the PSA sac, and a mechanical prosthesis valve was finally implanted. A follow-up TOE revealed the exclusion of the PSA; two leakages with mild peri-valvular mitral regurgitation were found, with no haemodynamic impact.

Discussion

In our case, the patient developed a PSA of the LV as a consequence of peri-annular extension of IE on the mitral valve. Pseudoaneurysm is a potentially lethal complication, if not promptly treated. Multimodality imaging including echocardiography and CT scan is recommended, in order to plan surgery ad hoc.

Hypertrophic cardiomyopathy-related left ventricular pseudoaneurysm: A case report

Background

Myocardial infarction-related left ventricular pseudoaneurysm (LVP), covered by the adjacent pericardial or scar tissue, is a fatal sequela of left ventricular rupture. Whereas hypertrophic cardiomyopathy (HCM) may cause left ventricular true aneurysm. Differentiating LVP from left ventricular true aneurysm is crucial because their natural histories and treatment strategies are distinct. However, the incidence and management of HCM-related LVP remain unknown.

Case presentation

An 88-year-old man was admitted to our hospital with sudden-onset chest pain. Upon initial examination, vital signs were stable, and a grade 4/6 systolic murmur was noted. An electrocardiogram revealed atrial fibrillation and poor R-wave progression without ST-T changes or negative T-waves. An echocardiography showed mild left ventricular hypertrophy, mid-ventricular obstruction with a significant intraventricular pressure gradient, left ventricular outflow tract obstruction, and a small left ventricular apical outpouching. Cardiac computed tomography angiography (CCTA) assisted in the diagnosis of LVP, and an accompanying pericardial effusion suggested impending cardiac rupture. Because the patient initially refused our proposed urgent surgery, medication was initiated with continuous hemodynamic monitoring in the intensive care unit; however, the patient's condition did not improve. During a semi-urgent surgical repair of the aneurysmal wall, LVP was observed and confirmed by pathology. Myocardial tissue adjacent to the pseudoaneurysm was consistent with that of HCM. Subsequently, a final diagnosis of HCM-related LVP was made. The postoperative course was notable for transient profound hypotension. Thereafter, the patient died of non-occlusive mesenteric ischemia on day 6.

Conclusions

To our knowledge, this is the first reported case of HCM-related LVP mimicking impending cardiac rupture. Our case highlights the importance of considering HCM-related LVP in patients with left ventricular outpouching and CCTA in the LVP diagnosis. In further research, data on the appropriate management of HCM-related LVP should be accumulated.

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.

Surgical techniques using an attached patch for large left ventricular pseudoaneurysm after inferior acute myocardial infarction

We report a case of large left ventricular pseudoaneurysm after inferior acute myocardial infarction. Patch repair is commonly performed; however, only a few studies have described specific surgical techniques for left ventricular pseudoaneurysm repair of the inferior left ventricular wall. As an optimal repair technique for left ventricular pseudoaneurysm of the inferior left ventricular wall is lacking, we believe our technique is safe and effective in repairing this pathology.

Echocardiography in the Recognition and Management of Mechanical Complications of Acute Myocardial Infarction

PURPOSE OF REVIEW

Although rare, the development of mechanical complications following an acute myocardial infarction is associated with a high morbidity and mortality. Here, we review the clinical features, diagnostic strategy, and treatment options for each of the mechanical complications, with a focus on the role of echocardiography.

RECENT FINDINGS

The growth of percutaneous structural interventions worldwide has given rise to new non-surgical options for management of mechanical complications. As such, select patients may benefit from a novel use of these established treatment methods. A thorough understanding of the two-dimensional, three-dimensional, color Doppler, and spectral Doppler findings for each mechanical complication is essential in recognizing major causes of hemodynamic decompensation after an acute myocardial infarction. Thereafter, echocardiography can aid in the selection and maintenance of mechanical circulatory support and potentially facilitate the use of a percutaneous intervention.

A Case of Left Ventricular Pseudoaneurysm as a Complication of Late-Presenting ST-Segment Elevation Myocardial Infarction

This case report delineates the clinical trajectory and management strategies of a 59-year-old Hispanic male diagnosed with a left ventricular pseudoaneurysm (LVPA) following a delayed presentation of ST-segment elevation myocardial infarction (STEMI), for which reperfusion treatment was not administered. Initially, an echocardiogram demonstrated an extensive anterolateral myocardial infarction, severe left ventricular systolic dysfunction, and an early-stage left ventricular apical aneurysm with thrombus, leading to the initiation of warfarin. Metabolic myocardial perfusion imaging via positron emission tomography indicated a substantial myocardial scar without viability, guiding the decision against revascularization. Post discharge, the patient, equipped with a wearable cardioverter defibrillator for sudden cardiac death prevention, experienced symptomatic ventricular tachycardia, which was resolved with defibrillator shocks. Subsequent imaging revealed an acute LVPA adjacent to the existing left ventricular aneurysm. Given the high surgical risk, conservative management was elected, resulting in thrombosis and closure of the pseudoaneurysm after two weeks. The patient eventually transitioned to home hospice, surviving an additional five months. This report underscores the complexities and therapeutic dilemmas in managing post-MI LVPA patients who are ineligible for surgical intervention.

Anterior basal left ventricular pseudoaneurysm in a single vessel disease

INTRODUCTION

Left ventricular pseudoaneurysm is a rare but serious clinicopathologic entity.

MATERIALS AND RESULTS

This article describes a case report of 51-year-old man who experienced recurrence of chest pain and dyspnea 4 months later after anterior ST elevation myocardial infarction of first diagonal branch. Anterior basal left ventricular pseudoaneurysm was diagnosed and successful surgical treatment was performed. One year after operation, patient has no cardiovascular events and remains in NYHA class II.

CONCLUSION

Cardiac magnetic resonance should be performed, if there is a suspicion of left ventricular pseudoaneurysm from transthoracic echocardiography. Surgery is the treatment of choice in case of left ventricular pseudoaneuryms because untreated lesions carry a significantly high risk of rupture.

A Leaky False Pouch: Left Ventricle Pseudoaneurysm with Active Hemopericardium Detected on Cardiac Computed Tomography Angiography

Pseudoaneurysm is a rare but fatal complication of myocardial infarction (MI). With the advances in cardiovascular disease detection and treatments, fatal structural complications post-MI are now rare. When they occur, advanced diagnostic modalities can be used for early diagnosis, aiding surgical planning, and improving prognosis. In our case, post-MI left ventricle pseudoaneurysm complicated by hemopericardium was diagnosed using cardiac computed tomography angiography (CCTA). Use of attenuation measurement on CCTA helped diagnose active extravasation into the hemopericardium. This case highlights the high index of suspicion needed for rare but fatal complications post-MI and the utility of CCTA in their management.

Left Ventricular Pseudoaneurysm in an Adult With a Repaired Partial Atrioventricular Canal Defect

•LV pseudoaneurysm formation is rare after congenital heart disease repair. •Conservative management of LV pseudoaneurysm was successful in this unique case. •CCT and 3D printing are valuable in the characterization of LV pseudoaneurysm.

Idioventricular Rhythm: A Rare Presentation of Left Ventricular Pseudoaneurysm Following Radiofrequency Ablation

Left ventricular pseudoaneurysm (PsA) is a rare complication of radiofrequency ablation (RFA) of cardiac arrhythmias. Presentation can vary widely in terms of timeline, signs, and symptoms. Idioventricular rhythm is a rare presentation of PsA post-ablation. No cases of post-ablation PsA presenting with idioventricular rhythm have been reported in the literature to date. A 72-year-old male presented with symptomatic idioventricular rhythm 34 days post RFA for premature ventricular complexes (PVCs). A PsA involving the distal anterolateral of his left ventricle wall was identified on transthoracic echo and computed tomography (CT). This patient underwent surgical patch repair which resolved his ventricular arrhythmia.

Left Ventricular Pseudoaneurysm: A Rare but Fatal Complication of Myocardial Infarction

Left ventricular pseudoaneurysm is a ventricular free wall rupture contained within the adjacent adherent pericardium or scar tissue. Myocardial infarction (MI), cardiac surgery, and chest trauma are the common causes. The most common presenting symptoms of pseudoaneurysms are congestive heart failure, chest pain, and dyspnea, but a small percentage of patients may be asymptomatic. Early diagnosis and treatment are of prime importance because of the tendency of pseudoaneurysms to expand and rupture, with a high mortality rate, especially if left untreated. We present a case of a 65-year-old man who was found to have left ventricular pseudoaneurysm on a follow-up echocardiography within three weeks of an MI. He subsequently underwent patch repair and was discharged after medical optimization. Our case highlights the importance of maintaining a high clinical suspicion of pseudoaneurysm in a patient post-MI, as delayed diagnosis and treatment can be fatal.

Left ventricular pseudoaneurysm as a complication of LVAD explant

Left ventricular (LV) pseudoaneurysms are a rare disease entity associated with a multitude of etiologies. We describe the radiographic findings of an LV pseudoaneurysm arising as a complication of a leaking left ventricular assist device (LVAD) closure device. Computed tomographic angiography (CTA) imaging demonstrated an apical LV wall defect with a preperitoneal collection of extravasated contrast. A review of the patient's surgical history revealed prior LVAD placement and explant with placement of an LV closure device. Familiarity with the radiologic manifestation of LV pseudoaneurysms is critical to establish a prompt diagnosis and facilitate timely therapeutic intervention.

Cardiac pseudoaneurysms: a clinical case series

Background

Cardiac pseudoaneurysms are a potentially life-threatening pathology with a variety of non-specific clinical manifestations. This case series uniquely shares a collection of rare pathologies with differing preceding risk factors and presentations, with an emphasis on the utility of multi-modality imaging in diagnosis and management.

Case summary

We present three cases of cardiac pseudoaneurysms. Case 1 is a 27-year-old woman with delayed presentation of a traumatic left ventricular pseudoaneurysm (LVP). Case 2 is a 73-year-old man with post-myocardial infarction LVP. Case 3 is a 38-year-old man with left ventricular outflow tract pseudoaneurysm after aortic valve replacement.

Discussion

Cardiac pseudoaneurysms are rare and important to diagnose in a timely manner. Advances in non-invasive imaging modalities have improved our ability to distinguish pseudoaneurysms from other pathologies, leading to more timely management.

Delayed Giant Pseudoaneurysm With Left-to-Right Shunt Following Postinfarct Ventricular Septal Perforation Repair

Left ventricular pseudoaneurysm with a left-to-right shunt is extremely rare, requiring surgery if symptomatic; however, surgery has a high risk. Here, the case of a 77-year-old man with heart failure symptoms is reported, in which he develops a giant left ventricular pseudoaneurysm 16 months after ventricular septal perforation repair as a result of acute myocardial infarction, with mild shunt blood flow from the pseudoaneurysm to the right ventricle. Intraoperative findings showed a free wall rupture along the area where the patch was secured during the initial surgery. The patient was discharged on postoperative day 13, and postoperative examination revealed no abnormalities.

Cardiac rupture during the course of treatment for acute purulent pericarditis caused by Staphylococcus aureus: a case report

Background

Purulent pericarditis is rare in the modern era of antibiotics. However, it is a rapidly progressive, life-threatening disease with complications, including cardiac tamponade and left ventricular pseudoaneurysm.

Case summary

A 44-year-old female was admitted with a pontine haemorrhage. On the 25th day of admission, she developed a fever along with chest pain and dyspnoea. Transthoracic echocardiography and computed tomography revealed a large pericardial effusion, leading to the diagnosis of cardiac tamponade. Pericardiocentesis was performed, resulting in the drainage of 750 mL of blood-stained fluid. Blood and pericardial fluid cultures were positive for Staphylococcus aureus; therefore, ceftriaxone was administered. On the 49th day, she became febrile again, and computed tomography showed increased pericardial effusion. Transthoracic echocardiography confirmed the large pericardial effusion and revealed a pseudoaneurysm on the inferior of the left ventricular wall, with blood flowing from the pseudoaneurysm into the pericardial space. Urgent surgical intervention was performed to repair a myocardial defect as a left ventricular pseudoaneurysm had ruptured in the pericardium. The patient recovered and was transferred to another hospital for rehabilitation after 108 days of hospitalization.

Discussion

Purulent pericarditis can be a lethal complication; therefore, careful follow-up and strict adherence to therapeutic strategies, including the use of imaging technologies such as echocardiography, are important.

Concomitant valve surgery is associated with worse outcomes in surgical treatments of post-infarction ventricular aneurysm

Objective

To evaluate the impact of concomitant valve surgery on the prognosis of patients who experienced coronary artery bypass graft (CABG) with/without ventricular reconstruction for the ventricular aneurysm.

Methods

In our department, 354 patients underwent CABG with/without ventricular reconstruction for a ventricular aneurysm from July 23rd, 2000 to December 23rd, 2022. A total of 77 patients received concomitant valve surgery, 37 of whom underwent replacement, and 40 of whom underwent repair. The baseline characteristics, prognostic, and follow-up information were statically analyzed. Univariate and multivariate Cox regression analyses were applied to identify the risk factors of long-term outcomes.

Results

Compared with patients who did not undergo valvular surgery, patients who experienced concomitant valve surgical treatments had a significantly lower survival rate (p = 0.00022) and a longer total mechanical ventilation time. Subgroup analysis indicated that the options of repair or replacement exhibited no statistically significant difference in postoperative mortality (p = 0.44) and prognosis. The multivariate Cox regression analysis suggested that the pre-operative cholesterol level (HR = 1.68), postoperative IABP (HR = 6.29), NYHA level (HR = 2.84), and pre-operative triglyceride level (HR = 1.09) were independent and significant predictors for overall all-cause mortality after surgery.

Conclusion

Concomitant valve surgery was considerably related to a higher risk of postoperative mortality in patients with post-infarction ventricle aneurysms who underwent surgical treatments. No significant difference in the prognosis outcomes was observed between the operating methods of repair or replacement valve surgery.

Successful repair of left ventricular rupture with pseudoaneurysm: a case report

Ventricular rupture with pseudoaneurysm is a rare phenomenon that usually occurs after myocardial infarction, previous cardiac surgery and infectious or inflammatory conditions. To prevent rupture of the pseudoaneurysm, urgent repair is recommended. We report successful open surgical repair of a 46-year-old man, who presented with pseudoaneurysm communicating with left ventricle.

Prosthetic Mitral Valve Endocarditis Complicated by Left Ventricular Pseudoaneurysm

Left ventricular pseudoaneurysm is a rare complication that can result from mitral valve replacement. Proper follow-up imaging can help to detect this potentially fatal complication and identify areas of concern. Infective endocarditis following mitral valve replacement can occur and further lead to the development of a pseudoaneurysm. We describe a case of left ventricular aneurysm in the setting of infective endocarditis following mitral valve replacement and present radiologic images from various modalities detailing the major findings.

Cardiac wall rupture in systemic lupus erythematosus: a case report and review of the literature

Cardiac wall rupture (CWR) is a serious and often fatal complication of myocardial infarction (MI). Despite an increase in the incidence of MI in patients with systemic lupus erythematosus (SLE), cases of CWR in these patients have been reported rarely. This study reports an SLE patient with CWR and pseudoaneurysm formation and reviews previously reported cases of CWR in SLE patients. An English language literature review of from the PubMed, EMBASE, and Scopus databases on published cases of CWR in SLE, up until January 2023, was performed and analyzed. The search identified 4 patients, including the present one, 5 cases altogether. All of them were female aged 27-40 years, and 3 of them had had SLE for 10 years or more. Chest pain and dyspnea were the common presentations. All had left ventricular (LV) wall rupture. Three patients had LV wall rupture with pseudoaneurysm formation (one had MI with normal coronary artery, one myocardial necrosis secondary from small coronary artery vasculitis and one MI from uncertain cause). The other 2 patients had LV free wall rupture (one had MI with extensive coronary atherosclerosis with coronary arteritis, and the other septic myocarditis with septic coronary arteritis) and these 2 patients died before the diagnosis was made. Three patients with pseudoaneurysm received surgical correction with good clinical outcomes in all. Cardiac wall rupture is a serious and often fatal cardiac complication. Emergency diagnosis and appropriate management with an experienced cardiology team is crucial. Surgical correction is the treatment of choice. Key Points • Cardiac wall rupture, a serious and often fatal cardiac complication, has rarely been described in SLE patients. • Emergency diagnosis and appropriate management with an experienced cardiology team is crucial. Surgical correction is the treatment of choice.

Percutaneous Closure of Post-Infarct Left Ventricular Pseudoaneurysm; A Review of Literature

Left ventricular pseudoaneurysm is a well-known complication of myocardial infarction and open-heart surgery and has recently been described as succeeding transapical transcatheter aortic valve replacement (TAVR). While surgical intervention is the conventional therapeutic approach, transcatheter closure can be considered in patients at high risk for surgical procedures. In this article, we present a post-myocardial infarction pseudoaneurysm for which closure was done via retrograde left ventricular (LV) access using an Amplatzer Septal Occluder, and provide a review of recent literature focusing on indications and outcomes of the different percutaneous techniques and devices.

Decoding Postinfarction Left Ventricular Pseudoaneurysm

Recognizing true from pseudo left ventricular aneurysm after myocardial infarction is paramount to guide clinical management and determine need for surgical urgency. We discuss a case of a postinfarction pseudoaneurysm that poses unique anatomic challenges and may hold a secret "DaVinci code" beyond current diagnostic criteria. (Level of Difficulty: Advanced.).

Left ventricular aneurysm versus pseudoaneurysm: Diagnosis in the era of multi-modality imaging and 3D-printing

In this case report, we illustrate the contemporary use of multi-modality cardiac imaging and three-dimensional (3D)-printing in the diagnosis and precise surgical planning of a large ventricular aneurysm with an extensive thrombus burden after myocardial infarction. We further discuss an integrated multimodality approach in the evaluation of ventricular outpouchings.

Pseudoaneurysm of the left ventricular free wall occurring after cardiac surgery of endocarditis affecting mitral and aortic valves: a case report

BACKGROUND

Infective endocarditis remains a serious condition. Left ventricular pseudoaneurysm may complicate the clinical course of infective endocarditis or occur postoperatively.

CASE PRESENTATION

We describe a case of a pseudoaneurysm of the left ventricular lateral wall which developed one month following cardiac surgery of active endocarditis affecting aortic and mitral valves. The diagnosis was established by transthoracic echocardiography and computed tomography angiography of the chest. Urgent cardiac surgery is performed with excision of the pseudoaneurysm and direct closure of the defect. The patient had a complete recovery and was discharged on the twelfth postoperative day.

CONCLUSIONS

Left ventricular pseudoaneurysms are rare but potentially fatal. The symptoms revealing such complications are very diverse. Surgical treatment can be offered to younger patients.

Massive left ventricular pseudoaneurysm presenting as dysphagia: a case report

Background

Left ventricular pseudoaneurysm is a recognized, however, uncommon presentation of acute myocardial infarction in the current era. This is due to early reperfusion therapy for acute myocardial infarction. Left ventricular pseudoaneurysm after myocardial infarction can present in a variety of ways, including heart failure, chest pain, and dyspnoea.

Case summary

We present a case of a 61-year-old male who presented with extremely atypical symptoms of dysphagia and weight loss due to a massive left ventricular pseudoaneurysm. Transthoracic echocardiogram and computed tomography revealed a large pseudoaneurysm causing mass effect on multiple gastrointestinal organs. Organic causes for dysphagia and weight loss were ruled out by gastroscopy. Surgical management was carried out but was ultimately unsuccessful.

Discussion

Despite the heterogeneity in presentation for patients with left ventricular pseudoaneurysm, rapid diagnosis is important for management and prognosis. Diagnostic tools include transthoracic echocardiography, computed tomography, and cardiac magnetic resonance imaging. Management is usually surgical; however, there is some debate in the literature regarding conservative vs. surgical management for chronic pseudoaneurysms. More data are needed to determine optimal management strategies and prognosis for patients with left ventricular pseudoaneurysms.

Left ventricular pseudoaneurysmectomy in patient without hemodynamic instability: A case report

We present a case of a 66-year-old male with a history of two previous diagnoses of myocardial infarction, followed by drug-eluting stent implantation. During the check-up, he complained of dyspnea, fatigue, and dizziness. Echocardiography revealed a massive left ventricular pseudoaneurysm (LVP). According to the patient's clinical manifestations and radiologic data, urgent surgical intervention was performed. Postoperatively, several complications appeared, which were managed successfully. The patient was discharged in stable condition. This is an interesting case of massive LVP without hemodynamic instability.

Left Ventricular Pseudoaneurysm: Unexpected Sequel of Tamponade-Complicated Infectious Pericarditis in Infancy

Left ventricular pseudoaneurysm (LV-PsA) is a critical finding that could result in a fatal outcome. It may complicate myocardial infarction, cardiac surgery, trauma, or endocarditis but rarely follows pericarditis. We report a case of infectious pericarditis complicated by pericardial tamponade in an infant. After effusion drainage and medical therapy, a large LV-PsA was detected. Successful closure of the pseudoaneurysm᾽s neck was accomplished using a Gore-tex patch.

A Dual Atrioventricular Approach to Repair Pseudoaneurysm after Mitral Valve Surgery

Background  Left ventricular pseudoaneurysm (LVPA) is an uncommon but potentially fatal complication following atrioventricular groove rupture. Case Description  We present a patient with a massive LVPA involving the lateral commissure and under the mitral P3 segment following coronary artery bypass grafting and mitral valve (MV) repair. MV replacement and arteriovenous pseudoaneurysm were repaired by dual approach via the left atrium with excision of the previously dehisced mitral ring to expose the defect and patch repair the atrioventricular defect through the pseudoaneurysm free wall. Conclusion  This is a rare case of a large subacute postoperative LVPA repaired by dual atrial-ventricular approach to treat a contained atrioventricular groove rupture.

Left ventricular pseudoaneurysm secondary to recurrent mitral prosthetic valve endocarditis

An 86-year-old man who had undergone two mitral valve replacements developed heart failure due to prosthetic valve infection and left ventricular pseudoaneurysm (LVPA). LVPA due to infective endocarditis is rare and caused by the abscess formation in the left ventricular myocardium. Infective endocarditis caused by enterococci requires attention to relapse.

Left Ventricular Pseudoaneurysms Discovered Early After Acute Myocardial Infarction: The Surgical Timing Dilemma

Left ventricular pseudoaneurysm is a rare disease; it is defined as a ventricular rupture contained by epicardium, pericardial adhesions, or both. It most frequently occurs as a complication of acute myocardial infarction. Surgical treatment is recommended for pseudoaneurysms that are large or symptomatic and for those discovered less than 3 months after myocardial infarction. We report our experience with 2 patients who had left ventricular pseudoaneurysms discovered less than a week after inferior myocardial infarction. Both patients were middle-aged men with right coronary occlusion in whom the diagnoses were established by echocardiography during the first week after infarction. Because both patients were clinically stable, we opted to defer surgery until scarring could facilitate correction; this decision was based on a review of the literature showing that in-hospital mortality is higher with early surgery. The patients were monitored closely in the intensive care unit and were prescribed β-blockers and vasodilators. Both patients underwent left ventricular patch reconstruction with exclusion of the pseudoaneurysm and posterior septum; both received moderate inotropic support and prophylactic intra-aortic balloon pump assistance. Their postoperative courses were uneventful. In 5 prior reports describing 45 patients (13 with acute pseudoaneurysm [≤2 wk after infarction] and 32 with nonacute pseudoaneurysm), in-hospital mortality was 61.5% for patients in the acute group and 15.6% for the nonacute group (P = .0066). We recommend that clinicians consider deferring surgery for patients with stable acute left ventricular pseudoaneurysm to reduce the risks associated with early repair.

COVID-19 pnömonisi öntanısı alan ağır solunum yetmezliği ile sonuçlanan sağ atriyal psödoanevrizma olgusu

Kovid-19 pnömonisinden şüphelenilen ve ilk olarak akciğer bilgisayarlı tomografisinde pnömoni lezyonları tespit edilen bir hasta kardiyomegali nedeniyle transtorasik ekokardiyografi ile ayrıca değerlendirildi. Transtorasik ekokardiyografide sağ atriyumla ilişkili büyük bir rüptüre psödoanevrizma saptandı. Kontrastlı bilgisayarlı tomografide sağ atriyal psödoanevrizmada iki taraflı çok sayıda akciğer nodülü ve mural trombüs ile ilişkili pulmoner emboli görüldü.

Case report: Spontaneous closure of ventricular pseudoaneurysm post-acute myocardial infarction with non-surgical therapy

Left ventricle (LV) pseudoaneurysm is a rare disorder post-acute myocardial infarction (AMI). Resection or closure of the pseudoaneurysm by surgery is recommended due to the high propensity of pseudoaneurysm rupture while surgery has also high risks. Conservative therapy could be acceptable in small pseudoaneurysms or patients with high surgical risks. Nevertheless, the risk evaluation and grasp of indication are not clear. This case reported an acute cyst-like LV pseudoaneurysm formation post-AMI-induced myocardial free wall rupture (MFWR), and the patient recovered with spontaneous closure of the fissure and shrinkage of the LV pseudoaneurysm through non-surgical therapy. Based on the observations in the echocardiogram, we proposed that intermittent closing of the fissure and interruption of the blood flow between the LV and the pseudoaneurysm due to LV contraction alleviated stress change on the pseudoaneurysm. The narrow fissure, small pseudoaneurysm, and intermittently interrupted blood flow that benefit fissure healing and pseudoaneurysm stabilization could indicate the prognosis of this patient. Drugs like β-blocker that decreased the stress on the pseudoaneurysm also led to the risk reduction of pseudoaneurysm rupture. To our knowledge, this is the first case that reports a spontaneous closure of LV pseudoaneurysm. The size of the fissure and the pseudoaneurysm, as well as the corresponding hemodynamic state, could be valuable to evaluate the risk and prognosis of the pseudoaneurysm. Optimized medical management was also helpful to pseudoaneurysm stabilization.

Myocardial Infarction With Ventricular Wall Aneurysm: A Case Report

A ventricular aneurysm can be pseudo or true; it is a rare complication of myocardial infarction induced by an intra-myocardial dissecting hematoma due to fragile myocardium. Ventricular wall rupture takes place two to four days after myocardial infarction when coagulative necrosis and inflammatory infiltrate and lysis of myocardial connective tissue results in weakening of infarcted myocardium. Acute cardiac wall ruptures are mostly fatal; an unwittingly located pericardial adhesion can abort a rupture resulting in a false aneurysm. The wall of a false aneurysm consists of the epicardium in contrast to a true aneurysm, which is composed of the myocardium. True aneurysms are complications seen in transmural infarcts. Thinned-out scar tissue paradoxically bulged during systole, and toughened fibrotic wall rupture doesn't usually occur. Deaths in subjects with true ventricular aneurysms occur due to mural thrombus, arrhythmias, and heart failure. We encountered a case of a true aneurysm, as reported below.

Case Report: Delayed Ventricular Pseudoaneurysm After Radiofrequency Ablation of Left Posteromedial Papillary Muscle Ventricular Tachycardia

A 74-year-old woman presented with incessant wide complex tachycardia that was refractory to cardioversions. Successful radiofrequency catheter ablation was performed on the left ventricular posteromedial papillary muscle. An inaudible steam pop has occurred during the procedure, but we confirmed that there were no complications during the procedure and short-term follow-up of echocardiography. Two months after the procedure, an asymptomatic pseudoaneurysm was identified at the ablation site that had not been observed in the short-term follow-up.

Left ventricular pseudoaneurysm repair utilizing P2 segment of mitral valve: a case report

Background

Left ventricular (LV) pseudoaneurysms are a rare occurrence typically seen after myocardial infarction (MI) or in patients with prior cardiac surgery and are associated with a significant risk of rupture and mortality. Management includes primary repair, epicardial patching, or percutaneous repair with occlusive devices.

Case presentation

This case report describes a 46-year-old male with a large LV pseudoaneurysm that was surgically patched with a segment of his mitral valve. To our knowledge, there has not been a documented repair utilizing a segment of the mitral valve.

Conclusions

The applicability of this technique is limited to cases with posteriorly located pseudoaneurysms near the mitral valve, thus allowing the P2 segment to be used as a patch. This is a novel approach to LV pseudoaneurysm repair, though careful consideration towards patient selection is warranted, as comorbid conditions may contribute to morbidity and mortality.

Left ventricular pseudoaneurysm: the niche of post-infarction mechanical complications

Left ventricular pseudoaneurysm (LVP) is a very rare, but potentially lethal mechanical complication of acute myocardial infarction (AMI). Despite representing a unique subset of cardiac rupture, it presents peculiar features that distinguish it from both ventricular free-wall rupture (FWR) and ventricular true aneurysm. LVP occurs in less than 0.5% of patients affected by AMI. However, LVP is generally burdened by high mortality, often related to false cavity rupture, leading to catastrophic and often irreversible consequences. The risk of rupture is inversely proportional to the timing from AMI onset, which also determines both the classification of LVP and drives the indication for treatment. Despite the lack of a current consensus on LVP management, urgent surgery is the treatment of choice for LVPs occurring within 3 months from AMI, especially if larger than 3 cm in diameter. A matter of debate, however, is represented by chronic LVPs, especially because the risk of rupture decreases progressively as time passes and left ventricular (LV) false cavity stabilizes. Surgical mortality rate remains not negligible (more than 20%), but these suboptimal results may be considered acceptable, especially considering the lethality associated with the occurrence of pseudoaneurysm rupture. Diagnostic workup is essential for anatomical characterization of LV rupture, which is mandatory to guide the decision on surgical approach and technique for pseudoaneurysm repair. Finally, for a subset of patients with anterior LVP and a well-defined fibrotic neck, and deemed at excessively high surgical risk, percutaneous closure of the cavity has been described with encouraging results.