ANTONIO AUGUSTO BARBOSA LOPES

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Instituto do Coração, Hospital das Clínicas, Faculdade de Medicina - Médico
LIM/31 - Laboratório de Genética e Hematologia Molecular, Hospital das Clínicas, Faculdade de Medicina

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  • article 0 Citação(ões) na Scopus
    Respiratory viruses and postoperative hemodynamics in patients with unrestrictive congenital cardiac communications: a prospective cohort study
    (2023) ABUD, Kelly C. O.; MACHADO, Clarisse M.; BOAS, Lucy S. Vilas S.; MAEDA, Nair Y.; CARVALHO, Eloisa S.; SOUZA, Maria Francilene S.; GAIOLLA, Paula V.; CASTRO, Claudia R. P.; PEREIRA, Juliana; RABINOVITCH, Marlene; LOPES, Antonio Augusto
    BackgroundPulmonary vascular abnormalities pose a risk for severe life-threatening hemodynamic disturbances following surgical repair of congenital cardiac communications (CCCs). In the distal lung, small airways and vessels share a common microenvironment, where biological crosstalks take place. Because respiratory cells infected by viruses express a number of molecules with potential impact on airway and vascular remodeling, we decided to test the hypothesis that CCC patients carrying viral genomes in the airways might be at a higher risk for pulmonary (and systemic) hemodynamic disturbances postoperatively.MethodsSixty patients were prospectively enrolled (age 11 [7-16] months, median with interquartile range). Preoperative pulmonary/systemic mean arterial pressure ratio (PAP/SAP) was 0.78 (0.63-0.88). The presence or absence of genetic material for respiratory viruses in nasopharyngeal and tracheal aspirates was investigated preoperatively in the absence of respiratory symptoms using real-time polymerase chain reaction (kit for detection of 19 pathogens). Post-cardiopulmonary bypass (CPB) inflammatory reaction was analyzed by measuring serum levels of 36 inflammatory proteins (immunoblotting) 4 h after its termination. Postoperative hemodynamics was assessed using continuous recording of PAP and SAP with calculation of PAP/SAP ratio.ResultsViral genomes were detected in nasopharynx and the trachea in 64% and 38% of patients, respectively. Rhinovirus was the most prevalent agent. The presence of viral genomes in the trachea was associated with an upward shift of postoperative PAP curve (p = 0.011) with a PAP/SAP of 0.44 (0.36-0.50) in patients who were positive versus 0.34 (0.30-0.45) in those who were negative (p = 0.008). The presence or absence of viral genomes in nasopharynx did not help predict postoperative hemodynamics. Postoperative PAP/SAP was positively correlated with post-CPB levels of interleukin-1 receptor antagonist (p = 0.026), macrophage migration inhibitory factor (p = 0.019) and monocyte chemoattractant protein-1 (p = 0.031), particularly in patients with virus-positive tracheal aspirates.ConclusionsPatients with CCCs carrying respiratory viral genomes in lower airways are at a higher risk for postoperative pulmonary hypertension, thus deserving special attention and care. Preoperative exposure to respiratory viruses and post-CPB inflammatory reaction seem to play a combined role in determining the postoperative behavior of the pulmonary circulation.
  • article 6 Citação(ões) na Scopus
    Atrial Septal Defect in Adults: Does Repair Always Mean Cure?
    (2014) LOPES, Antonio Augusto; MESQUITA, Sonia M. F.
  • article 8 Citação(ões) na Scopus
    Parameters associated with outcome in pediatric patients with congenital heart disease and pulmonary hypertension subjected to combined vasodilator and surgical treatments
    (2019) THOMAZ, Ana Maria; KAJITA, Luiz J.; AIELLO, Vera D.; ZORZANELLI, Leina; GALAS, Filomena Regina B. G.; MACHADO, Cleide G.; BARBERO-MARCIAL, Miguel; JATENE, Marcelo B.; RABINOVITCH, Marlene; LOPES, Antonio Augusto
    Management of pediatric pulmonary hypertension associated with congenital heart disease (PHT-CHD) is challenging. Some patients have persistently elevated pulmonary artery pressure (PAP) after cardiac surgery, an undesired condition that is difficult to predict. We investigated the value of clinical, hemodynamic, and histopathological data in predicting the outcome in a prospective cohort. Patients with PHT-CHD received sildenafil orally pre- and postoperatively for six months and then were subjected to a catheter study. Thirty-three patients were enrolled (age range = 4.6-37.0 months). Pulmonary vascular resistance (PVR) was 4.9 (range = 3.9-7.2) Wood units x m(2) (median with IQR). Twenty-two patients had a >= 20% decrease in PVR and pulmonary-to-systemic vascular resistance ratio (PVR/SVR) in response to inhaled nitric oxide (NO). The response was directly related to the degree of medial hypertrophy of pulmonary arterioles (P < 0.05) (morphometric analysis, intraoperative lung biopsy). Subsequently, five of the non-responders had a >= 30% increase in pulmonary blood flow in response to sildenafil (3.0 [2.0-4.0] mg/kg/day). Six months after surgery, PAP and PVR were significantly lower (P < 0.001 vs. baseline), even in seven patients with Heath-Edwards grade III/IV pulmonary vascular lesions (P = 0.018), but still abnormal in 12 individuals (>25 mmHg and >3.0 U x m(2), respectively). A preoperative PVR/SVR of >= 24% during NO inhalation and a wall thickness of arteries accompanying respiratory bronchioli of >= 4.7 (Z score) were identified, respectively, as risk and protection factors for abnormal postoperative hemodynamics (hazard ratio [95% CI] = 1.09 [1.01-1.18], P = 0.036; and 0.69 [0.49-0.98], P = 0.040, respectively). Thus, in PHT-CHD patients receiving oral sildenafil pre- and post-surgical repair of cardiac lesions, mid-term postoperative outcome is predictable to some extent.
  • article 5 Citação(ões) na Scopus
    Tratamento cirúrgico da persistência do canal arterial na população adulta
    (2011) JATENE, Marcelo Biscegli; ABUCHAIM, Decio Cavalet Soares; TIVERON, Marcos G.; TANAMATI, Carla; MIURA, Nana; RISO, Arlindo; AUIK, Edrnar; LOPES, Antonio Augusto; MARCIAL, Miguel Barbero
    Objective: To analyze 34 patients submitted to surgical treatment of patent arterial duct with age beyond 18 years old. Methods: Retrospective data collected from patient's charts with more than eighteen years old, submitted to surgical correction of patent arterial duct between 1997 and 2008 at Instituto do Coracao da Faculdade de Medicina da Universidade de Sao Paulo. Results: The mean age was 28.7 (18 a 53) years and 22 (64.7%) were female. The more prevalent symptom was dyspnea (76.5%). Left lateral thoracotomy was used in 33 (97.1%); the DA was sectioned and sutured in 25 (73.5%) cases and one patient needed cardiopulmonary bypass support. There were eight (23.5%) calcified arterial duct and 12 (35.3%) previous treatment with transcatheter devices were performed. The complication rate was 32%, with one (2.9%) permanent vocal cord palsy. Two (5.8%) patients had residual shunt less than 2mm. Transient left cord voice palsy was observed in 3 (8.8%) The procedure improves functional class (P < 0.0001) and no mortality was observed. Conclusion: In this series, the surgical treatment of patent arterial duct in adults could be done without mortality and low incidence of complications.
  • article 6 Citação(ões) na Scopus
    Acute vasoreactivity testing in pediatric idiopathic pulmonary arterial hypertension: an international survey on current practice
    (2019) CAICEDO, Lina; HOPPER, Rachel; AGUILAR, Humberto Garcia; IVY, Dunbar; HAAG, Dora; FINEMAN, Jeff; HUMPL, Tillman; AL-TAMIMI, Omar; FEINSTEIN, Jeff A.; BERGER, Rolf; ROSENZWEIG, Erika; KASHOUR, Tarek; DIAZ, Gabriel Fernando; MENDOZA, Alberto; KRISHNAN, Usha; BOBHATE, Prashant; HANDLER, Stephanie; LOPES, Antonio Augusto; RAHIT, Manoj Kumar; BARWARD, Parag; LERA, Carlos Labrandero de; ADATIA, Ian; MOLEDINA, Shahin; ABMAN, Steven; CERRO, Maria Jesus del
    The aim of this study was to determine practice patterns and inter-institutional variability in how acute vasoreactivity testing (AVT) is performed and interpreted in pediatrics throughout the world. A survey was offered to physicians affiliated with the Pediatric & Congenital Heart Disease Taskforce of the Pulmonary Vascular Research Institute (PVRI), the Pediatric Pulmonary Hypertension Network (PPHNET), or the Spanish Registry for Pediatric Pulmonary Hypertension (REHIPED), from February to December 2016. The survey requested data about the site-specific protocol for AVT and subsequent management of pediatric patients with idiopathic pulmonary arterial hypertension (IPAH) or heritable PAH (HPAH). Twenty-eight centers from 13 countries answered the survey. AVT is performed in most centers using inhaled nitric oxide (iNO). Sitbon criteria was used in 39% of the centers, Barst criteria in 43%, and other criteria in 18%. First-line therapy for positive AVT responders in functional class (FC) I/II was calcium channel blocker (CCB) in 89%, but only in 68% as monotherapy. Most centers (71%) re-evaluated AVT-positive patients hemodynamics after 6-12 months; 29% of centers re-evaluated based only on clinical criteria. Most centers (64%) considered a good response as remaining in FC I or II, with near normalization of pulmonary arterial pressure and pulmonary vascular resistance, but a stable FC I/II alone was sufficient criteria in 25% of sites. Protocols and diagnostic criteria for AVT, and therapeutic approaches during follow-up, were highly variable across the world. Reported clinical practice is not fully congruent with current guidelines, suggesting the need for additional studies that better define the prognostic value of AVT for pediatric IPAH patients.
  • article 3 Citação(ões) na Scopus
    Postoperative Pulmonary Hemodynamics and Systemic Inflammatory Response in Pediatric Patients Undergoing Surgery for Congenital Heart Defects
    (2022) SOUZA, Maria Francilene S.; PENHA, Juliano G.; MAEDA, Nair Y.; GALAS, Filomena R. B. G.; ABUD, Kelly C. O.; CARVALHO, Eloisa S.; THOMAZ, Ana Maria; CASTRO, Claudia R. P.; PEREIRA, Juliana; LOPES, Antonio Augusto
    There is scarce information about the relationships between postoperative pulmonary hemodynamics, inflammation, and outcomes in pediatric patients with congenital cardiac communications undergoing surgery. We prospectively studied 40 patients aged 11 (8-17) months (median with interquartile range) with a preoperative mean pulmonary arterial pressure of 48 (34-54) mmHg who were considered to be at risk for postoperative pulmonary hypertension. The immediate postoperative pulmonary/systemic mean arterial pressure ratio (PAP/SAP(IPO), mean of first 4 values obtained in the intensive care unit, readings at 2-hour intervals) was correlated directly with PAP/SAP registered in the surgical room just after cardiopulmonary bypass (r=0.68, p < 0.001). For the entire cohort, circulating levels of 15 inflammatory markers changed after surgery. Compared with patients with PAP/SAP(IPO)& LE;0.40 (n=22), those above this level (n=18) had increased pre- and postoperative serum levels of granulocyte colony-stimulating factor (p=0.040), interleukin-1 receptor antagonist (p=0.020), interleukin-6 (p=0.003), and interleukin-21 (p=0.047) (panel for 36 human cytokines) and increased mean platelet volume (p=0.018). Using logistic regression analysis, a PAP/SAP(IPO)> 0.40 and a heightened immediate postoperative serum level of macrophage migration inhibitory factor (quartile analysis) were shown to be predictive of significant postoperative cardiopulmonary events (respective hazard ratios with 95% CIs, 5.07 (1.10-23.45), and 3.29 (1.38-7.88)). Thus, the early postoperative behavior of the pulmonary circulation and systemic inflammatory response are closely related and can be used to predict outcomes in this population.
  • article 8 Citação(ões) na Scopus
    Heart Neoplasms in Children: Retrospective Analysis
    (2013) PENHA, Juliano Gomes; ZORZANELLI, Leina; BARBOSA-LOPES, Antonio Augusto; AIELLO, Vera Demarchi; CARVALHO, Vitor Oliveira; CANEO, Luiz Fernando; RISO, Arlindo de Almeida; TANAMATI, Carla; ATIK, Edimar; JATENE, Marcelo Biscegli
    Background: The advancement of noninvasive imaging methods has resulted in the increase in diagnosis of heart neoplasms. However, the literature has few studies involving primary cardiac neoplasms in children. Objective: To retrospectively review cases of primary heart neoplasms in children, considering the initial clinical manifestations, diagnostic tests used, surgical indication, histopathological types and immediate postoperative course. Methods: The retrospective study was based on the assessment of medical records from 1983 to 2011. Only cases that were referred for surgical treatment during that period were included. Age at admission, prenatal diagnosis, family history, initial symptoms and the results of performed tests were assessed. Moreover, the date and indication of the surgery, intraoperative findings, the result of the histopathological analysis, as well as the immediate postoperative complications were recorded. Results: Of the 18 patients studied, the most frequent clinical manifestations were dyspnea and heart murmur (7 and 6 patients, respectively); the most often used adjunct diagnostic method was echocardiography (18 patients); cavitary obstruction or ventricular inflow or outflow tract obstruction was the main indication for surgery (12 cases); the most common histological profile was rhabdomyoma (7 patients) and most patients showed good clinical outcome. Conclusion: In this study, imaging diagnosis was basically attained through echocardiography, with good correlation with intraoperative findings. Histopathological findings were consistent with the literature, with rhabdomyoma being the most common neoplasm in children. The evolution after surgical treatment was favorable in most cases. (Arq Bras Cardiol. 2013; 100(2): 120-126)
  • article 0 Citação(ões) na Scopus
    Case 1/2016-56-Year-Old Male with Atrial Septal Defect, Pulmonary Arterial Hypertension, Hospitalized Due to Eisenmenger Syndrome
    (2016) SANTANA, Carolina; LOPES, Antonio Augusto B.; PAIVA, Antonio Fernando Lins de; BENVENUTI, Luiz Alberto
  • article 0 Citação(ões) na Scopus
    Consenso sobre la clasificación de la enfermedad vascular pulmonar hipertensiva en niños: reporte del task force pediátrico del Pulmonary Vascular Research Institute (PVRI) Panamá 2011
    (2012) DEL CERRO, María Jesús; ABMAN, Steven; DÍAZ, Gabriel; HEATH FREUDENTHAL, Alexandra; FREUDENTHAL, Franz; HARIKRISHNAN, S; HAWORTH, Sheila G; DUNBAR, Ivy; LOPES, Antonio A; USHA RAJ, J; SANDOVAL, Julio; STENMARK, Kurt; ADATIA, Ian
    Current classifications of pulmonary hypertension have contributed a great deal to our understanding of pulmonary vascular disease, facilitated drug trials, and improved our understanding of congenital heart disease in adult survivors. However, these classifications are not applicable readily to pediatric disease. The classification system that we propose is based firmly in clinical practice. The specific aims of this new system are to improve diagnostic strategies, to promote appropriate clinical investigation, to improve our understanding of disease pathogenesis, physiology and epidemiology, and to guide the development of human disease models in laboratory and animal studies. It should be also an educational resource. We emphasize the concepts of perinatal maladaptation, maldevelopment and pulmonary hypoplasia as causative factors in pediatric pulmonary hypertension. We highlight the importance of genetic, chromosomal and multiple congenital malformation syndromes in the presentation of pediatric pulmonary hypertension. We divide pediatric pulmonary hypertensive vascular disease into 10 broad categories.
  • article 13 Citação(ões) na Scopus
    Saudi Guidelines on the Diagnosis and Treatment of Pulmonary Hypertension: Pulmonary arterial hypertension associated with congenital heart disease
    (2014) LOPES, Antonio; ALNAJASHI, Khalid
    Congenital heart disease (CHD) with intracardiac/extracardiac shunts is an important etiology of pulmonary arterial hypertension (PAH). The majority of children with congenital cardiac shunts do not develop advanced pulmonary vasculopathy, as surgical repair of the anomalies is now performed early in life. However, if not repaired early, some defects will inevitably lead to pulmonary vascular disease (truncus arteriosus, transposition of the great arteries associated with a ventricular septal defect (VSD), atrioventricular septal defects remarkably in Down syndrome, large, nonrestrictive VSDs, patent ductus arteriosus and related anomalies). The majority of patients are now assigned to surgery based on noninvasive evaluation only. PAH becomes a concern (requiring advanced diagnostic procedures) in about 2-10% of them. In adults with CHD, the prevalence of advanced pulmonary vasculopathy (Eisenmenger syndrome) is around 4-12%. ([1]) This article will discuss the diagnostic and management approach for PAH associated with CHD (PAH-CHD).