Postangioplasty aneurysm of right coronary artery.

BACKGROUND: Coronary artery aneurysms are an uncommon disease whose incidence ranges from 0.3% to 5.3%. The right coronary artery is affected in 40%-70% of cases. Percutaneous coronary angioplasty is among causative factors, in particular with stent implantation. AIMS: We present a case of large postangioplasty aneurysm of the right coronary artery requiring surgical correction. MATERIALS & METHODS: A 70-year-old man with history of multiple coronary angioplasty procedures was admitted with diagnosis of aneurysm of the right coronary artery at the site of past DES insertion. RESULTS: Under cardiopulmonary bypass, the large aneurysm was incised and oversewn with final grafting of the posterior descending artery with in situ right internal mammary artery. The postoperative course was uneventful. DISCUSSION: The treatment options for coronary artery aneurysms range from medical, percutaneous and surgical approaches. CONCLUSION: In this case the surgical approach was indicated due to the large aneurysm and the high risk of rupture.

Pericardiectomy for constrictive pericarditis.

Chronic constrictive pericarditis results from inflammation and fibrosis of the pericardium. This situation eventually leads to impairment of diastolic filling and right heart failure. Once the diagnosis is made, because the disease is basically irreversible, a pericardiectomy is the mandatory treatment. The standard surgical treatment has been extensively described. The goal of this video tutorial is to render a visual explanation of the described techniques and to provide tips to help make the procedure easier to perform. The standard technique is performed through a median sternotomy, preferably without cardiopulmonary bypass if feasible. The procedure includes the complete removal of the anterior pericardium from phrenic nerve to phrenic nerve and the removal of the diaphragmatic pericardium and of part of the pericardium posterior to both phrenic nerves. Before starting the actual pericardiectomy procedure, it is useful to separate the pericardial rigid shell from the pleurae and from the diaphragm; this step allows the operator to see both phrenic nerves clearly and to give clear boundaries between the pericardium and the diaphragm, which are not often as clear as desirable due to fat, edema, inflammation, and scarring. Once a portion of the pericardium has been detached from the myocardium, it can be excised, making the portion yet to be removed more visible.

Cardiac tamponade caused by a migrating sewing needle.

: Penetrating injuries of the heart caused by migrating needles have been rarely described. They usually occur accidentally or are self-inflicted in the setting of an underlying psychiatric disorder. We present an unusual case of cardiac tamponade caused by a sewing needle that migrated to the heart from the chest wall through the lung. The lesions were successfully repaired through a median sternotomy without cardiopulmonary bypass. The pathophysiological mechanism and the pertinent literature are briefly analysed.

Levosimendan may improve weaning outcomes in venoarterial ECMO patients.

Venoarterial extracorporeal membrane oxygenation (VA-ECMO) provides temporary mechanical circulatory support in patients with refractory cardiogenic shock, allowing time for cardiac recovery. Levosimendan is a calcium sensitizer with inotropic and vasodilatory effects used in the treatment of severe heart failure. It does not increase myocardial oxygen consumption. Its maximum hemodynamic response is seen 24-48 h after stopping infusion, but its effects can persist for 7-9 d owing to active metabolites. We sought to investigate whether the use of levosimendan improves weaning outcomes in patients on VA-ECMO. Six consecutive patients with cardiogenic shock were placed on femorofemoral VA-ECMO support and received levosimendan 24 h before the planned weaning (group A). As control group (group B), we retrospectively reviewed the VA-ECMO implanted at our institution before the introduction of the levosimendan protocol. These patients received only traditional inotropes. The weaning rate was 83.33% in group A and 27.3% in group B. The survival rate was 66.66% and 36.4%, respectively. In group A, three of six patients (50%) required inotropic/vasopressor support after ECMO cessation, while in group B 11 of 11 patients (100%) required support. In our case series, pretreatment with levosimendan seems to facilitate weaning from VA-ECMO, reducing the need for high-dose inotropes.

[Case report of a patient on extracorporeal memebrane oyxgenation for cardiogenic shock not suitable for weaning in a peripheral center. Just a "problem" or is it feasible a treatment before patient transfer to a Hub center?]. / Paziente in ossigenazione extracorporea a membrana per shock cardiogeno non svezzabile in un centro periferico. Solo un "problema" o è possibile un trattamento prima del trasferimento ad un centro Hub?

Veno-arterial extracorporeal membrane oxygenation (VA ECMO) is the treatment of choice for cardiogenic shock unresponsive to inotropes or intra-aortic balloon pumping. It provides a temporary mechanical circulatory support and blood oxygenation allowing time for cardiac recovery. If this is not the case, the patient may become suitable for heart transplantation or left ventricular assist device (LVAD) implantation and must be transferred to a referral center. In this setting, patient transport is asscociated with high risk and it is also difficult from a logistic point of view. We describe a relatively simple method to switch the assistance from VA ECMO to LVAD. Through a left minithoracotomy an apical cannula is inserted into the left ventricle and then connected to the venous return of ECMO. The progressive clamping of ECMO venous cannula transforms the circuit from VA ECMO to a LVAD. In fact, if the switching procedure is succesfully accomplished, the left ventricle is drained, and thus unloaded, through the apical cannula while the blood to systemic circulation is provided from the femoral artery cannula. In this final setting, the oxygenator can be removed and the patient extubated, allowing an easier and less hazardous transfer to a heart transplantation center.

[Single cardiac metastasis from colorectal cancer: an unusual localization]. / Singola metastasi cardiaca da adenocarcinoma intestinale: una rara localizzazione.

Metastasis to the heart from malignancy is a frequent but underestimated event. Tumors that are located in the mediastinum, such as pleural mesothelioma, are more frequently associated with cardiac colonization. Few reports have described metastasis from colon adenocarcinoma, which usually colonizes liver and lungs. Moreover, intracardiac localization is more common for primary cardiac neoplasms than for metastasis. We present an unusual case of a patient operated for colon adenocarcinoma who exhibited a single intracardiac secondary localization. Although the mass was huge, the patient was completely asymptomatic. Strict oncologic follow-up facilitates an early identification of the lesion, which could then be promptly resected.

[Rare endocarditis due to Abiotrophia defectiva. Case report and literature review]. / Rara endocardite da Abiotrophia defectiva. Presentazione di un caso e revisione della letteratura.

Endocarditis by Abiotrophia defectiva is rare but associated with high rates of complications and mortality. The microbiological identification is challenging. Two cases without preexisting valvulopathy and one case with mitral-aortic involvement are described in the literature. A case of this subacute form of endocarditis, with normal mitral and aortic valves, is reported. Surgery was necessary, and mitral repair and aortic homograft implantation were performed with good 3-month results. In case of subacute endocarditis, especially when etiology is difficult to detect, Abiotrophia defectiva should be suspected.

Obstruction of the tricuspid valve orifice by a huge right atrial myxoma associated with the Carney complex: a case report.

Carney complex (CNC) is an inherited autosomal dominant disorder associated with multiple neoplasms. Myxomas associated with CNC differ from their sporadic forms because the former usually develop at a younger age and they may be multicentric and have a tendency to recur. Furthermore, their localization may be atypical. We report the case of a 57-year-old man, with a huge right atrial myxoma obstructing the tricuspid valve orifice. A diagnosis of CNC was established by genetic analysis. The importance of early diagnosis and an adequate follow-up is emphasized.

Is lower limb venous drainage during peripheral extracorporeal membrane oxygenation necessary?

Extracorporeal membrane oxygenation (ECMO) is becoming a gold standard in acute heart failure, not responsive to inotrops and intra-aortic balloon contrapulsation. This diffusion is due to the possibility to implant it through peripheral cannulation and to perform long-time assistance. Nevertheless, this technique implies some problems concerning inferior limb perfusion. It is widely accepted that arterial distal cannulation and perfusion of the limb is mandatory, especially for long periods of assistance; but the necessity to implant a distal venous drainage is still discussed. We would like to present our experience on peripheral ECMO where we could avoid venous distal drainage uneventfully.

Postinfarction septal dissection and rupture evolved as an inferobasal pseudoaneurysm: a specific anatomical pattern.

In rare cases of posterior myocardial infarction, septal rupture is the consequence of a dissecting interventricular hematoma that evolves as a fibrotic septal chamber with two separate communications, towards left and right ventricle. This unusual anatomical pattern is generally unsuspected and described as a normal interventricular defect associated with a basal left ventricular aneurysm or pseudoaneurysm. We present a case where echocardiography and ventricular angiography did not detect this situation. As surgical implications are important, this peculiar anatomical pattern should be suspected especially in patients with asymptomatic postinfarction posterior septal rupture or in those with minimal clinical impairment.

Repair of posterior left ventricular aneurysm through transatrial approach.

Repair of posterior left ventricular ischemic aneurysms implies an extracardiac approach to reshape the ventricular geometry frequently associated with mitral surgery. A transatrial technique was described for lesions following mitral surgery or for subvalvular idiopathic cases. A transmitral approach was used for ischemic or traumatic pseudoaneurysm. We describe a case of postinfarction posterior true aneurysm with associated mitral incompetence. Both lesions were treated through an intracardiac approach. The posterior mitral leaflet was detached posteriorly to close the aneurysm with a patch, and the valve replaced sparing all subvalvular apparatus. This technique seems to be safe and allows to treat both lesions avoiding ventriculotomy.

An unusual left ventricular outflow pseudoaneurysm: usefulness of echocardiography and multidetector computed tomography for surgical repair.

Left ventricular outflow tract (LVOT) pseudoaneurysm is a rare but potentially lethal complication, mainly after aortic root endocarditis or surgery. Usually it originates from a dehiscence in the mitral-aortic intervalvular fibrosa and it arises posteriorly to the aortic root. Due to these anatomical features, its imaging assessment is challenging and surgical repair requires complex procedures. An unusual case of LVOT pseudoaneurysm is described. It was detected by transthoracic ecocardiography 7 months after aortic root replacement for acute endocarditis. Multidetector computed tomography (MDCT) confirmed the presence of a pouch located between the aortic root and the right atrium. Computed tomography also detected the origin of the pseudoaneurysm from the muscular interventricular septum of the LVOT, rather below the aortic valve plane. It was repaired with an extracardiac surgical approach, sparing the aortic root bioprosthesis previously implanted. The high-resolution three-dimensional details provided by the preoperative MDCT allowed us to plan a simple and effective surgical strategy.

Off-pump technique: a systematic alternative for myocardial revascularization?

OBJECTIVE: Many studies failed to show that off-pump myocardial revascularization achieved better results than on-pump revascularization, and also invited a lot of criticism for the criteria used for selection and inclusion of patients. To avoid these limitations, we systematically treated all candidates for coronary surgery with this technique evaluating early and follow-up results. METHODS: In 257 prospective consecutive patients, off-pump myocardial revascularization was performed by the same surgeon without any exclusion criteria. Hospital mortality and main postoperative complications were analysed. After a mean follow-up of 27.50 months, 245 patients (98.4%) were contacted to evaluate late mortality, recurrence of angina, myocardial infarction and need for new revascularization. RESULTS: Conversion to extracorporeal circulation was necessary in 10 cases. Hospital mortality was eight patients (3.11%). Postoperative complications were reexploration for bleeding (2.72%), myocardial infarction (1.17%), atrial fibrillation (21.01%), stroke (0.39%) and renal failure (3.5%). Follow-up overall mortality was 16 patients (6.53%) with two cardiac-related deaths (0.82%). Total cardiac events at follow-up occurred in 20 patients (8.16%). There were two cardiac deaths, angina in 15 cases, silent myocardial ischaemia in two and myocardial infarction in one. New revascularization procedures were necessary in seven cases (2.86%). Statistical results showed that the European System for Cardiac Operative Risk Evaluation rate was predictor of 30-day and overall mortality. Multivariate analysis showed that age was a predictor of overall mortality whereas female sex was a predictor of cardiac events. CONCLUSION: In conclusion, systematic off-pump surgery was not associated with a higher rate of mortality, morbidity and cardiac events compared to on-pump technique.

Short-term hemodynamic performance of the Sorin Freedom SOLO stentless valve.

BACKGROUND AND AIM OF THE STUDY: The new Sorin Freedom SOLO pericardial stentless valve is designed for supra-annular implantation, and requires only one running suture. It can be implanted with a short cross-clamp time, and is designed to offer the same hemodynamic advantages of other stentless valves. The study aim was to evaluate the prospective postoperative and two-month follow up hemodynamic performance of this bioprosthesis. METHODS: Thirty patients (13 males, 17 females; mean age 75.6 +/- 6.21 years) with severe aortic stenosis underwent valve replacement with the Sorin Freedom SOLO stentless valve. All patients underwent transthoracic echocardiography before surgery, before hospital discharge, and at two months' follow up. The peak and mean transprosthetic gradients, telediastolic and telesystolic diameters, septal and posterior wall thicknesses, total and indexed ventricular mass volume and left ventricular ejection fraction were evaluated. RESULTS: Both, the transprosthetic peak gradient and mean gradient decreased significantly during the first two months (p < 0.05 and p < 0.001, respectively). The telediastolic diameter was significantly reduced between preoperative evaluation and follow up (p < 0.05). The interventricular septum thickness was decreased significantly after two months (p <0.001), as was the posterior wall thickness, albeit to a lesser degree (p < 0.05). Both, total and indexed ventricular mass volume showed a significant regression at the two months follow up (p < 0.001). CONCLUSION: The Sorin Freedom SOLO stentless valve shows good hemodynamic performance, with an early and highly progressive left ventricular remod eling. If these data are confirmed in future studies, the SOLO prosthesis might represent a safe alternative to the use of conventional stentless valves.

Surgical treatment of ascending aorta and innominate artery trunk aneurysm with displaced brachiocephalic vessels.

The surgical treatment of ascending aortic and arch aneurysms, even though technically complex and requiring care to avoid neurological sequelae, is well established. Nevertheless, the presence of a significant innominate artery trunk aneurysm implies an adaptation of the surgical options available. We report a case of an aortic aneurysm that involved the ascending aorta, the proximal transverse arch and the brachiocephalic trunk with cranial displacement of the right subclavian and common carotid arteries. This pattern, meant that it was mandatory to change the usual surgical approach. We resected the ascending aorta and the proximal aortic arch replacing them with a dacron prosthesis in a usual fashion. Nevertheless, we were compelled to perform the anastomoses of the innominate trunk branches in an extrathoracic fashion. Furthermore, to ensure an uninterrupted cerebral perfusion, the usual surgical steps were personalized. The anatomical findings, computed tomographic images, surgical technique, cerebral protection and postoperative evaluation are described.

[Validation of a new scoring system to predict the risk of postoperative acute renal failure in cardiac surgery]. / Utilizzo di un nuovo sistema a punteggio per predire il rischio di insufficienza renale acuta postoperatoria in cardiochirurgia.

BACKGROUND: The aim of this study was to cross validate a new scoring system, based on preoperative risk factors, in predicting the risk of postoperative dialysis after cardiac surgery and recently proposed by Thakar et al. METHODS: Between January 2003 and March 2006, 1642 consecutive patients underwent cardiac surgery. From our clinical database, using Thakar's method, we calculated the total score for each patient. Univariate analysis was applied to all the risk factors considered for the score to test their statistical power in predicting postoperative acute renal failure. The effectiveness of the scoring system was analyzed with univariate analysis and with the area under the ROC curve. RESULTS: Postoperative dialysis was necessary in 22 patients. The factors that predicted acute renal failure, identified by univariate analysis, were the following: previous cardiac surgery, emergency surgery, coronary artery bypass graft associated with valve procedure, preoperative creatinine (1.2 to 2.1 mg/dl) and preoperative creatinine > or =2.1 mg/dl. The scoring system resulted statistically significant in predicting dialysis risk (p <0.001), the area under the ROC curve was 0.82. The incidence of renal failure in the four scoring groups, identified by Thakar, was similar in the first two groups but higher in the last two groups. CONCLUSIONS: Thakar's scoring system was validated in our population and all the major risk factors considered for its calculation were statistically significant in predicting postoperative dialysis after cardiac surgery.

Aortic valve repair after blunt chest trauma: repair of traumatic aortic valve rupture.

A frequent reason of admission to the emergency room is blunt chest trauma following car accidents. Chest injuries may cause a wide range of cardiac lesions, extending from myocardial contusion, to heart or great vessels rupture, to valvular lesions. We present a case of aortic valve rupture after blunt chest trauma.