Publications by authors named "Adailson Siqueira"

Background: Cardiomyopathy is a disease that affects the myocardium and can be classified as dilated, restrictive, or hypertrophic cardiomyopathy. Among the subtypes, restrictive cardiomyopathy is characterized by restriction of ventricular filling and its uncommon cause is a disease due to mutation on Filamin C (FLNC) gene. Filamin C is an actin-binding protein encoded by FLNC gene and participates in sarcomere stability maintenance, which is expressed on the striated muscle.

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Mechanical circulatory support is an established therapy to support failing hearts as a bridge to transplantation. Although tolerated overall, arrhythmias may occur after ventricular assist device implantation and can complicate patient management. We report on an infant with dilated cardiomyopathy who developed ventricular tachycardia followed by recalcitrant ventricular fibrillation, refractory to comprehensive medical therapy post Berlin Heart EXCOR® (BHE) implant.

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Congenital heart disease is the most common birth defect, and heart transplantation is the main treatment of choice. As genetic causes can be identified in a considerable proportion of cases, investigation of possible family cardiac history is essential. We analyzed the profiles of pediatric heart transplant recipients in terms of family history of heart disease.

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Background: The Coronavirus disease 2019 (COVID-19) pandemic has been a global reality for longer than 3 years. Serologic studies have great importance for understanding the virus's behavior in populations, as it can suggest the status of the epidemic in a community. This cross-sectional study aimed to analyze the serologic profile for COVID-19 in patients before and after pediatric heart transplantation.

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Article Synopsis
  • A 14-year-old heart transplant recipient experienced heart failure and fatigue after contracting COVID-19, highlighting the vulnerability of immunosuppressed patients to infections.
  • An endomyocardial biopsy was conducted to assess for organ rejection and possible myocarditis due to SARS-CoV-2, revealing significant acute cellular rejection but no presence of the virus.
  • Following high-dose treatment with methylprednisolone and human immunoglobulin, the patient's heart function improved, and subsequent biopsies showed a decrease in rejection levels.
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Heart transplantation is the treatment of choice for children and adults with congenital heart disease. We report the heart transplant single-center experience. The number of transplantations has increased over the last 3 decades.

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Background: In countries where organ donation is scarce, mortality in the pediatric heart transplant waiting list is high, and ventricular assist devices (VADs) are therapeutic alternatives in these situations. Berlin Heart EXCOR is currently 1 of the few VADs specific for children.

Methods: This retrospective study includes pediatric patients who underwent Berlin Heart EXCOR placement in a Brazilian hospital between 2012 and 2021.

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Introduction: Heart transplantation is the standard treatment for end-stage heart disease. Despite advances in the field, patients remain under risk of developing complications, including opportunistic infections, such as tuberculosis. We present the unprecedented case of cerebral tuberculoma in a 9-year-old heart transplant recipient.

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The objective of this study was to describe the clinical course of a newborn who developed dilated cardiomyopathy (DCM) after COVID-19 infection. We retrospectively assessed the clinical notes of a pediatric patient with decompensated heart failure and who was previously positive for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). A 23-day-old newborn presented with diarrhea, hypoactivity, tachypnea, and lethargy.

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Background: Pediatric end-stage heart disease is surgically managed by heart transplantation. A major complication of primary transplantation (PTx) is coronary allograft vasculopathy (CAV), a form of accelerated atherosclerosis. Retransplantation (RTx) has been the management of CAV; however, there is limited comprehensive literature on this subject.

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We sought to better define the demographics and characteristics of post-transplant lymphoproliferative disorders (PTLD) in a cohort of paediatric OHT patients from a developing country. Data were collected from the Heart Institute, Sao Paulo, for all paediatric OHT recipients from October 1992 to October 2018. Group differences between the PTLD and non-PTLD cohorts were assessed by Fisher exact and Mann-Whitney U tests.

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