Luis Augusto Dallan
University of Sao Paulo, Incor, Faculty Member
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Introduction: Cardiac arrest during procedures in the Cath Lab is excessively harmful, as manual chest compressions prevents the continuity of coronary angiography and coronary angioplasty and require the assistance of trained staff in... more
Introduction: Cardiac arrest during procedures in the Cath Lab is excessively harmful, as manual chest compressions prevents the continuity of coronary angiography and coronary angioplasty and require the assistance of trained staff in cardiopulmonary resuscitation (CPR) quickly and accurately. AutoPulse® is a mechanical CPR device that consists of mechanical pneumatic band attached to a board that involves the patient’s chest and allows effective and continuous pneumatic compressions, allowing mechanical CPR simultaneously to coronary angiography and angioplasty. Hypothesis: We assessed the hypothesis that mechanical CPR may be feasible during percutaneous coronary interventions and more effective than manual CPR by the analysis of intra-coronary pressure curves. Methods: The device was used in 6 consecutive cases of cardiac arrests (ventricular fibrillation refractory to attempts of defibrillation and standard treatment) in the Cath Lab, allowing continuity of percutaneous coronar...
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Background: Since the mid-1980’s transthoracic pacing has been a common temporary treatment for arrhythmias. Present external pacing technology requires the application of both multifunction defibrillation electrodes and separate leads... more
Background: Since the mid-1980’s transthoracic pacing has been a common temporary treatment for arrhythmias. Present external pacing technology requires the application of both multifunction defibrillation electrodes and separate leads for electrocardiogram (ECG) monitoring. Separate ECG leads are required as the current from the pacing pulse creates artifact in the signal that prevents one from distinguishing between pace-captured and non-captured rhythms when using the defibrillation electrode alone. Hypotheses: We hyothezised that Stat· padz MWP electrode, a transthoracic electrode that integrates the ECG electrodes into the defibrillation and pacing pad woud be abble to reconize captured and non-captured rhythms in a typical clinical setting of the syntomatic bradycardia. Methods: We conducted a prospective study at Emergency Department of a University Hospital. During October 2006 to April 2007, 28 patients with symptomatic bradycardia were include in the study. Comparison betw...
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Therapeutic hypothermia (TH) reduces the damage by ischemic / reperfusion syndrome in cases of cardiac arrest, in which its application is already widely established and carried out in centers of excellence. However its use in patients... more
Therapeutic hypothermia (TH) reduces the damage by ischemic / reperfusion syndrome in cases of cardiac arrest, in which its application is already widely established and carried out in centers of excellence. However its use in patients with ST segment elevation myocardial infarction (STEMI) is still
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Mortality prediction after cardiac procedures is an essential tool in clinical decision making. Although rheumatic cardiac disease remains a major cause of heart surgery in the world no previous study validated risk scores in a sample... more
Mortality prediction after cardiac procedures is an essential tool in clinical decision making. Although rheumatic cardiac disease remains a major cause of heart surgery in the world no previous study validated risk scores in a sample exclusively with this condition. Develop a novel predictive model focused on mortality prediction among patients undergoing cardiac surgery secondary to rheumatic valve conditions. We conducted prospective consecutive all-comers patients with rheumatic heart disease (RHD) referred for surgical treatment of valve disease between May 2010 and July of 2015. Risk scores for hospital mortality were calculated using the 2000 Bernstein-Parsonnet, EuroSCORE II, InsCor, AmblerSCORE, GuaragnaSCORE, and the New York SCORE. In addition, we developed the rheumatic heart valve surgery score (RheSCORE). A total of 2,919 RHD patients underwent heart valve surgery. After evaluating 13 different models, the top performing areas under the curve were achieved using Random...
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Research Interests: Medicine, Logistic Regression, Cardiac Surgery, Prospective studies, Humans, and 15 moreInternal Medicine, Calibration, Female, Male, Aged, Middle Aged, Morbidity, Reference Values, Cross Sectional Studies, Euroscore, Logistic Models, Creatinine, Glomerular Filtration Rate, Reference standards, and Cardiovascular medicine and haematology
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The effect of proximal side branches on the patency of the internal thoracic artery (ITA) is controversial. We used echocardiography and Doppler to verify the effect of ligation of branches on the flow and coronary flow reserve (CFR) of... more
The effect of proximal side branches on the patency of the internal thoracic artery (ITA) is controversial. We used echocardiography and Doppler to verify the effect of ligation of branches on the flow and coronary flow reserve (CFR) of the grafted ITA in patients after coronary artery bypass grafting (CABG). We prospectively investigated 53 patients with preserved left ventricular ejection fraction (LVEF >50%) who underwent CABG of the ITA. In Group I (25 patients), major branches were ligated during ITA anastomosis to the left anterior descending (LAD) coronary artery, whereas no ligation was performed in Group II (28 patients). Systolic flow (SF), diastolic flow (DF), and total flow (TF = SF + DF) were measured by Doppler echocardiography at the proximal level of the ITA preoperatively, at early postoperative stage, and 6 months after surgery. Dobutamine stress echocardiography (DSE) was performed at 6 months to determine CFR. The ITA flow was predominantly systolic before sur...
Research Interests: Cardiology, Medicine, Echocardiography, Prospective studies, Humans, and 13 moreFemale, Male, Follow-up studies, Artery, Middle Aged, Coronary Angiography, Internal medicine Doppler ultrasonography, Coronary Circulation, Coronary Artery Disease, Anastomosis, Ligation, Cardiovascular medicine and haematology, and Coronary Vessels
Este artigo tem por objetivo discutir as principais indicacoes cirurgicas relacionadas as sindromes coronarianas agudas. Situa o tratamento cirurgico diante dos avancos nas unidades coronarianas e dos servicos de hemodinâmica. Tudo isso... more
Este artigo tem por objetivo discutir as principais indicacoes cirurgicas relacionadas as sindromes coronarianas agudas. Situa o tratamento cirurgico diante dos avancos nas unidades coronarianas e dos servicos de hemodinâmica. Tudo isso aliado ao atual tratamento medicamentoso e as tecnicas de Cardiologia Intervencionista, que passam a ocupar posicao de destaque no tratamento desse grupo de pacientes. A cirurgia de revascularizacao do miocardio nas sindromes isquemicas agudas tem seu espaco definido, com avancos notaveis, sobretudo pelas tecnicas operatorias minimamente invasivas e pelos novos metodos de protecao miocardica. Representa, tambem, a primeira opcao para pacientes vitimas de complicacoes mecânicas do infarto agudo do miocardio. Pacientes com sindromes coronarianas instaveis podem ser tratados, alem da revascularizacao classica do miocardio, pelas inovacoes tecnicas na area cirurgica, especialmente por meio da cirurgia de revascularizacao do miocardio sem o emprego da circulacao extracorporea e por mini-incisoes. Varios outros avancos dessa area, ja aplicados a pacientes portadores de insuficiencia coronariana cronica, tais como o uso de raios laser, angiogenese e robotica, serao abordados em outras oportunidades.
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página 1 de 1, 1 / 1, LILACS, seleciona. para imprimir. Fotocópia. experimental, Documentos relacionados. Id: 86714. Autor: Dallan, Luís Alberto Oliveira; Oliveira, Sérgio Almeida de; Lavitola, Paulo; Verginelli, Geraldo; Jatene, Adib... more
página 1 de 1, 1 / 1, LILACS, seleciona. para imprimir. Fotocópia. experimental, Documentos relacionados. Id: 86714. Autor: Dallan, Luís Alberto Oliveira; Oliveira, Sérgio Almeida de; Lavitola, Paulo; Verginelli, Geraldo; Jatene, Adib Domingos. ...
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Base de dados : LILACS. Pesquisa : 164342 [Identificador único]. Referências encontradas : 1 [refinar]. Mostrando: 1 .. 1 no formato [Detalhado]. página 1 de 1, 1 / 1, LILACS, seleciona. para imprimir. Fotocópia. experimental, Documentos... more
Base de dados : LILACS. Pesquisa : 164342 [Identificador único]. Referências encontradas : 1 [refinar]. Mostrando: 1 .. 1 no formato [Detalhado]. página 1 de 1, 1 / 1, LILACS, seleciona. para imprimir. Fotocópia. experimental, Documentos relacionados. Id: 164342. ...
Introduction: The therapeutic options to patients with stable multivessel coronary artery disease (CAD) and normal ventricle function are coronary artery bypass graft (CABG), angioplasty (PCI) or m...
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There are many new alternative methods of minimally invasive myocardial revascularization that can be applied in selected patients who have multivessel coronary artery disease. However, these techniques often require new and expensive... more
There are many new alternative methods of minimally invasive myocardial revascularization that can be applied in selected patients who have multivessel coronary artery disease. However, these techniques often require new and expensive equipment. Most multivessel myocardial revascularization is performed via median sternotomy and involves the use of a conventional endotracheal tube. Both lungs are ventilated, and frequently the left pleural cavity is opened. In contrast, single-lung deflation naturally moves the mediastinum within the thorax toward the collapsed lung, without the need to open the pleural cavities. Herein, we describe a simple alternative procedure that facilitates off-pump multivessel coronary artery bypass grafting via complete median sternotomy: single-lung ventilation with contralateral lung deflation. This technique better exposes the more distal right and circumflex coronary artery branches with or without the opening of the pleural cavities.
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Although the Cox-Maze III procedure is effective for treating permanent atrial fibrillation (AF), its high complexity limits its use. The Saline-Irrigated Cooled-tip Radiofrequency Ablation (SICTRA) System is an alternative source of... more
Although the Cox-Maze III procedure is effective for treating permanent atrial fibrillation (AF), its high complexity limits its use. The Saline-Irrigated Cooled-tip Radiofrequency Ablation (SICTRA) System is an alternative source of energy used to ablate AF. The aim of this study was to evaluate the effectiveness of the SICTRA for the treatment of permanent AF in patients with rheumatic mitral valve (MV) disease. Between February 2002 and April 2003, 70 patients with permanent AF and rheumatic MV disease were randomly assigned to undergo a modified Maze III procedure using SICTRA associated with MV surgery (group A) or MV surgery alone (group B). Groups A and B were similar in terms of baseline characteristics. The in-hospital mortality rate was 2.3% (1 death) in group A versus 0% (no deaths) in group B (P>0.99). The additional time required for the left-sided radiofrequency ablation in group A was 14.2+/-5.1 minutes and for right-sided ablation was 12.3+/-4.2 minutes. The mean ...
Research Interests: Cardiology, Medicine, Humans, Internal Medicine, Female, and 15 moreMale, Atrial Fibrillation, Anticoagulants, Clinical Sciences, Aged, Middle Aged, Adult, Circulation, Catheter ablation, Hospital Mortality, Amiodarone, Postoperative care, Postoperative Complications, Intraoperative Period, and Cardiovascular medicine and haematology
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... José Carlos R. IGLÉZIAS*, José de Lima OLIVEIRA JÚNIOR*, Klaus Werner FELS*, Luís Alberto DALLAN*, Noedir AG STOLF ... Iglézias JCR, Oliveira Júnior JL, Fels KW, Dallan LA, Stolf NAG,Oliveira SA, Verginelli G, Jatene AD - Prognostic... more
... José Carlos R. IGLÉZIAS*, José de Lima OLIVEIRA JÚNIOR*, Klaus Werner FELS*, Luís Alberto DALLAN*, Noedir AG STOLF ... Iglézias JCR, Oliveira Júnior JL, Fels KW, Dallan LA, Stolf NAG,Oliveira SA, Verginelli G, Jatene AD - Prognostic factors about, myocardial ...
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A radioquimioterapia (RT/QT) tornou-se o tratamento de escolha para o carcinoma espinocelular anal (CEC). Na recidiva local ou na persistência da doença, deve-se instituir o tratamento cirúrgico. OBJETIVO: O objetivo deste estudo... more
A radioquimioterapia (RT/QT) tornou-se o tratamento de escolha para o carcinoma espinocelular anal (CEC). Na recidiva local ou na persistência da doença, deve-se instituir o tratamento cirúrgico. OBJETIVO: O objetivo deste estudo retrospectivo foi analisar os resultados do tratamento de doentes de CEC anal. MÉTODO: Acompanhamos 17 pacientes com diagnóstico anátomo-patológico de carcinoma espinocelular anal. Eram 14 (82,3%) do sexo feminino e três (17,8%) do masculino. A idade variou de 36 a 78 anos, com média de idade de 59,1 anos. Utilizando a classificação TNM, tivemos quatro (23,6%) no estádio I, seis (35,2%) no II, quatro (23,6%) no IIIa e três (17,6%) no IIIb. Todos foram submetidos a tratamento inicial com RT/QT, exceto um submetido a ressecção local. Definimos que a biópsia negativa, realizada entre 12 e 16 semanas após esse tratamento, determinaria o controle local da doença. RESULTADOS: Perdemos seguimento de três doentes (17,6%). Seguimos os 14 restantes (82,3%) entre um e...