Publications by authors named "Severino Iesu"

Background: Deep hypothermic circulatory arrest (DHCA) at ≤20°C for aortic arch surgery has been widely used for decades, with or without cerebral perfusion (CP), antegrade (antegrade cerebral perfusion [ACP]), or retrograde. In recent years nadir temperature progressively increased to 26°C-28°C (moderately hypothermic circulatory arrest [MHCA]), adding ACP. Aim of this multicentric study is to evaluate early results of aortic arch surgery and if DHCA with 10 min of cold reperfusion at the same nadir temperature of the CA before rewarming (delayed rewarming [DR]) can provide a neuroprotection and a lower body protection similar to that provided by MHCA + ACP.

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Article Synopsis
  • The study focuses on a new aggressive treatment method for acute type A aortic dissection using the frozen elephant trunk (FET) technique, which extends repair to the aortic arch and proximal descending thoracic aorta.
  • A total of 66 patients (average age ~63 years, mostly men) underwent emergency surgery between December 2017 and January 2022, with researchers assessing 30-day mortality, in-hospital mortality, and postoperative complications.
  • Results showed a 30-day mortality rate of 10.6% and in-hospital mortality of 13.6%, with key predictors for long-term survival identified, including left ventricular ejection fraction and presence of peripheral vascular disease
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The frozen elephant trunk (FET) technique is an increasingly common procedure to treat complex extensive aortic disease both in elective and emergency setting. In a contemporary era, several prostheses are available to be used by surgeons performing such procedures, merging the advantages of endovascular and conventional surgery and preparing a more useful landing zone for second-stage downstream endovascular or open repair. Thoraflex hybrid (Terumo Aortic, Scotland) is a largely used hybrid vascular device merging a conventional surgical vascular graft made of gelatin-sealed woven polyester graft with a nitinol self-expanding stent graft.

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Article Synopsis
  • The study evaluates early clinical outcomes of the frozen elephant trunk (FET) technique for treating complex aortic diseases, transitioning from traditional methods.
  • A total of 70 patients were treated, with a 100% technical success rate; however, in-hospital mortality was 14.2% with some occurrences of major strokes and spinal cord injury.
  • The FET technique showed promising results in a real-world context, suggesting good feasibility and outcomes, particularly in neurological complications, but further refinement and protocols for safety are needed.
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Acute type A aortic dissection (ATAAD) is an indisputable emergency with very poor outcomes without surgical treatment. Although the aortic arch is often involved in the aortic dissection, its optimal management during surgical therapy remains uncertain. A conservative tear-oriented approach has traditionally been adopted, limiting the procedure to the ascending aorta (or hemiarch) replacement.

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Difficult diagnosis is due to rarity of the case. TT or TE echocardiography is sufficient to make a correct diagnosis. The risk of embolism or coronary ostia occlusion should guide the decision for surgery.

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We report a unique case of a Starr-Edwards prosthesis (model 6310, cloth covered) implanted in the mitral position by Christian Barnard that was successfully explanted and replaced after 50 years, the longest period free from valve dysfunction ever reported. Reoperation also included replacement of the native aortic valve combined with tricuspid valve annuloplasty. ().

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Recent scientific literature has investigated the cardiovascular implications of COVID-19. The mechanisms of cardiovascular damage seem to involve the protein angiotensin-converting enzyme 2 (ACE2), to which severe acute respiratory syndrome (SARS) coronavirus-2 (CoV-2) binds to penetrate cells and other mechanisms, most of which are still under study. Cardiovascular sequelae of COVID-19 include heart failure, cardiomyopathy, acute coronary syndrome, arrhythmias, and venous thromboembolism.

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Objectives: Healthcare systems worldwide have been overburdened by the coronavirus disease 2019 (COVID-19) outbreak. Accordingly, hospitals had to implement strategies to profoundly reshape both non-COVID-19 medical care and surgical activities. Knowledge about the impact of the COVID-19 pandemic on cardiac surgery practice is pivotal.

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Background: Health systems worldwide have been overburdened by the "COVID-19 surge". Consequently, strategies to remodulate non-COVID medical and surgical care had to be developed. Knowledge of the impact of COVID surge on cardiac surgery practice is mainstem.

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  • Short-term mechanical circulatory support (MCS) devices aid patients in severe cardiac situations, providing hemodynamic stability during high-risk surgeries, heart failure, and other critical conditions.
  • Electrical storm is a dangerous complication in cardiac patients, characterized by multiple episodes of ventricular fibrillation in a day, with a very high mortality rate of 80-90%.
  • The case study details a 38-year-old man with severe coronary artery disease and heart dysfunction who faced an electrical storm after emergency CABG surgery but was successfully treated with a combination of biventricular MCS using extracorporeal life support and devices like Impella CP and ProtekDuo.
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  • The study aimed to assess how the COVID-19 pandemic affected urgent and elective thoracic and abdominal aortic surgeries between January-May 2020 and the same period in 2019.
  • Researchers found no significant change in the number of urgent procedures, but there was a notable 35% drop in elective surgeries during the pandemic, especially in countries like Italy.
  • Patients with acute conditions still sought treatment, indicating that while elective cases decreased, emergency cases were managed as per the guidelines, warranting further investigation into the long-term effects of delayed elective surgeries.
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  • Type A aortic dissection is a serious surgical emergency with high risks, including a 56% chance of in-hospital mortality without surgery and a 10-20% surgical mortality rate within 30 days.
  • The primary treatment goals involve replacing the damaged ascending aorta and monitoring the distal aortic false lumen, with various surgical techniques depending on the condition of the aortic valve.
  • A case study showcases the successful use of both the Florida sleeve technique and the Vascutek "Thoraflex" hybrid prosthesis to repair the ascending aorta while preserving the native aortic valve and preparing for future interventions.
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Reimplantation of the supra-aortic vessels can be challenging with Thoraflex Hybrid. A device modification made the vessel lengths more appropriate and the position of the neo-vessels in the chest avoided malpositioning and kinking and facilitated sternum closure; this may improve operating times as well as allowing complete and continuous cerebral trivascular perfusion and corrects positioning of the intrathoracic vessels.

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The management of patients infected by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) may be difficult due to the need for dedicated in-hospital pathways, protective measures for healthcare professionals and isolated beds of intensive care, particularly in areas overwhelmed by wide viral spread. Although pneumonia is the most common clinical manifestation in coronavirus disease 2019 (COVID-19), a variety of cardiovascular complications have been reported. An integrated diagnostic algorithm in SARS-CoV-2-infected patients with suspected cardiac involvement (laboratory findings of myocardial injury and electrocardiographic changes) may help to avoid unnecessary examinations and minimize the risk of operator infection.

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Background: Displacement of Impella 5.0 secondary to patient movement or transportation is a well-known complication. Typically, repositioning of an Impella across the aortic valve is attempted over a guidewire.

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We assessed the predictive accuracy of the Warfarin Pharmacogenetics Consortium (IWPC) algorithm in a prospective cohort of 376 high-risk elderly patients (≥65 years) who required new treatment with warfarin for either medical (non valvular atrial fibrillation) or surgical conditions (heart valve replacement), had ≥1 comorbid conditions, and regularly used ≥2 other drugs. Follow-up visits were performed according to clinical practice and lasted for a maximum of 1 year. Two hundred and eighty-three (75%) patients achieved a stable maintenance dose.

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The authors report the case of an 87-year-old man undergoing transcatheter aortic valve replacement via transfemoral approach who developed a life-threatening complication, i.e., fistulization between the aortic root and the left atrium, which was successfully treated by surgery.

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Background: Many ST-segment elevation myocardial infarction (STEMI) patients have a multivessel disease that initially require percutaneous coronary intervention (PCI) of the culprit vessel but subsequently may require coronary artery bypass graft (CABG) of nonculprit vessels. Evidence supports staged revascularization, but the identification of optimal strategies (percutaneous or surgical), the timing and the management of antiplatelet therapy after recent PCI with stenting are matters of great controversies.

Methods: In our retrospective registry, we have enrolled 21 patients presenting with STEMI and multivessel disease, who underwent PCI of the culprit vessel only and then CABG of nonculprit vessels.

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Spontaneous coronary artery rupture is a rare disorder that may develop early into a sudden death due to the abrupt evolution of the associated cardiac tamponade. In some cases the rupture is contained and a false aneurysm develops with slower evolution of clinical signs. The correct diagnosis of spontaneous coronary artery rupture deserves a high level of suspicion; frequently it may be missed because the time window of its evolution seems to be very short or signs of acute coronary syndrome sometimes can prevail, leading to delays in diagnosis or to misdiagnosis.

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Aortic dissection (AD) is the most common life-threatening disease involving the aorta. It is rarely associated with systemic disorders such as Autosomal Dominant Polycystic Kidney Disease (ADPKD), a genetic syndrome characterized by cystic degeneration of kidneys, possible presence of cysts in other organs and extra-renal manifestations, including cardiovascular disorders. We performed a systematic literature search focused on the occurrence of AD associated with ADPKD (25 cases identified), and reported two cases from our experience.

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