MARCELO PARK
Projetos de Pesquisa
Unidades Organizacionais
Instituto Central, Hospital das Clínicas, Faculdade de Medicina - Médico
LIM/51 - Laboratório de Emergências Clínicas, Hospital das Clínicas, Faculdade de Medicina
LIM/51 - Laboratório de Emergências Clínicas, Hospital das Clínicas, Faculdade de Medicina
19 resultados
Resultados de Busca
Agora exibindo 1 - 10 de 19
- Brazilian recommendations of mechanical ventilation 2013. Part 1(2014) CAVALCANTI, Alexandre Biasi; ISOLA, Alexandre Marini; GAMA, Ana Maria Casati; DUARTE, Antonio Carlos Magalhaes; VIANNA, Arthur; SERPA NETO, Ary; FARIAS, Augusto Manoel de Carvalho; BRAVIM, Bruno de Arruda; PINHEIRO, Bruno do Valle; MAZZA, Bruno Franco; CARVALHO, Carlos Roberto Ribeiro de; TOUFEN JUNIOR, Carlos; BARBAS, Carmen Silvia Valente; DAVID, Cid Marcos Nascimento; TANIGUCHI, Corine; MAZZA, Debora Dutra da Silveira; DRAGOSAVAC, Desanka; TOLEDO, Diogo Oliveira; COSTA, Eduardo Leite; CASER, Eliana Bemardete; SILVA, Eliezer; AMORIM, Fabio Ferreira; SADDY, Felipe; GALAS, Filomena Regina Barbosa Gomes; SILVA, Gisele Sampaio; MATOS, Gustavo Faissol Janot de; EMMERICH, Joao Claudio; VALIATTI, Jorge Luis dos Sanots; TELES, Jose Mario Vleira; VICTORINO, Josue Almeida; FERREIRA, Juliana Carvalho; PRODOMO, Luciana Passuello do Vale; HAJAR, Ludhmila Abrahao; MARTINS, Luiz Claudio; MALBOUISSON, Luiz Marcelo Sa; VARGAS, Mara Ambrosina de Oliveira; HOLANDA, Marcelo Alcantara; AMATO, Marcelo Brito Passos; PARK, Marcelo; JACOMELLI, Marcia; REIS, Marco Antonio Soares; TAVARES, Marcos; DAMASCENO, Marta Cristina Paulette; DAMASCENO, Moyzes Pinto Coelho Duarte; ASSUNCAO, Murillo Santucci Cesar; YOUSSEF, Nazah Cherif Mohamad; MESSEDER, Octavio; TEIXEIRA, Paulo Jose Zimmermann; CARUSO, Pedro; DUARTE, Pericles Almeida Delfino; EID, Raquel Caserta; RODRIGUES, Ricardo Goulart; JESUS, Rodrigo Francisco de; KAIRALLA, Ronald Adib; JUSTINO, Sandra; NEMER, Sergio Nogueira; ROMERO, Simone Barbosa; AMADO, Veronica MoreiraPerspectives on invasive and noninvasive ventilatory support for critically ill patients are evolving, as much evidence indicates that ventilation may have positive effects on patient survival and the quality of the care provided in intensive care units in Brazil. For those reasons, the Brazilian Association of Intensive Care Medicine (Associacao de Medicina Intensiva Brasileira - AMIB) and the Brazilian Thoracic Society (Sociedade Brasileira de Pneumologia e Tisiologia - SBPT), represented by the Mechanical Ventilation Committee and the Commission of Intensive Therapy, respectively, decided to review the literature and draft recommendations for mechanical ventilation with the goal of creating a document for bedside guidance as to the best practices on mechanical ventilation available to their members. The document was based on the available evidence regarding 29 subtopics selected as the most relevant for the subject of interest. The project was developed in several stages, during which the selected topics were distributed among experts recommended by both societies with recent publications on the subject of interest and/or significant teaching and research activity in the field of mechanical ventilation in Brazil. The experts were divided into pairs that were charged with performing a thorough review of the international literature on each topic. All the experts met at the Forum on Mechanical Ventilation, which was held at the headquarters of AMIB in Sao Paulo on August 3 and 4, 2013, to collaboratively draft the final text corresponding to each sub-topic, which was presented to, appraised, discussed and approved in a plenary session that included all 58 participants and aimed to create the final document.
- Brazilian recommendations of mechanical ventilation 2013. Part 2(2014) CAVALCANTI, Alexandre Biasi; ISOLA, Alexandre Marini; GAMA, Ana Maria Casati; DUARTE, Antonio Carlos Magalhaes; VIANNA, Arthur; SERPA NETO, Ary; FARIAS, Augusto Manoel de Carvalho; BRAVIM, Bruno de Arruda; PINHEIRO, Bruno do Valle; MAZZA, Bruno Franco; CARVALHO, Carlos Roberto Ribeiro de; TOUFEN JUNIOR, Carlos; BARBAS, Carmen Silvia Valente; DAVID, Cid Marcos Nascimento; TANIGUCHI, Corine; MAZZA, Debora Dutra da Silveira; DRAGOSAVAC, Desanka; TOLEDO, Diogo Oliveira; COSTA, Eduardo Leite; CASER, Eliana Bernardete; SILVA, Eliezer; AMORIM, Fabio Ferreira; SADDY, Felipe; GALAS, Filomena Regina Barbosa Gomes; SILVA, Gisele Sampaio; MATOS, Gustavo Faissol Janot de; EMMERICH, Joao Claudio; VALIATTI, Jorge Luis dos Sanots; TELES, Jose Mario Meira; VICTORINO, Josue Almeida; FERREIRA, Juliana Carvalho; PRODOMO, Luciana Passuello do Vale; HAJJAR, Ludhmila Abrahao; MARTINS, Luiz Claudio; MALBOUISSON, Luiz Marcelo Sa; VARGAS, Mara Ambrosina de Oliveira; HOLANDA, Marcelo Alcantara; AMATO, Marcelo Brito Passos; PARK, Marcelo; JACOMELLI, Marcia; REIS, Marco Antonio Soares; TAVARES, Marcos; DAMASCENO, Marta Cristina Paulette; DAMASCENO, Moyzes Pinto Coelho Duarte; ASSUNCAO, Murillo Santucci Cesar; YOUSSEF, Nazah Cherif Mohamad; MESSEDER, Octavio; TEIXEIRA, Paulo Jose Zimmermann; CARUSO, Pedro; DUARTE, Pericles Almeida Delfino; EID, Raquel Caserta; RODRIGUES, Ricardo Goulart; JESUS, Rodrigo Francisco de; KAIRALLA, Ronaldo Adib; JUSTINO, Sandra; NEMER, Sergio Nogueira; ROMERO, Simone Barbosa; AMADO, Veronica MoreiraPerspectives on invasive and noninvasive ventilatory support for critically ill patients are evolving, as much evidence indicates that ventilation may have positive effects on patient survival and the quality of the care provided in intensive care units in Brazil. For those reasons, the Brazilian Association of Intensive Care Medicine (Associacao de Medicina Intensiva Brasileira - AMIB) and the Brazilian Thoracic Society (Sociedade Brasileira de Pneumologia e Tisiologia - SBPT), represented by the Mechanical Ventilation Committee and the Commission of Intensive Therapy, respectively, decided to review the literature and draft recommendations for mechanical ventilation with the goal of creating a document for bedside guidance as to the best practices on mechanical ventilation available to their members. The document was based on the available evidence regarding 29 subtopics selected as the most relevant for the subject of interest. The project was developed in several stages, during which the selected topics were distributed among experts recommended by both societies with recent publications on the subject of interest and/or significant teaching and research activity in the field of mechanical ventilation in Brazil. The experts were divided into pairs that were charged with performing a thorough review of the international literature on each topic. All the experts met at the Forum on Mechanical Ventilation, which was held at the headquarters of AMIB in Sao Paulo on August 3 and 4, 2013, to collaboratively draft the final text corresponding to each sub-topic, which was presented to, appraised, discussed and approved in a plenary session that included all 58 participants and aimed to create the final document.
- Severe hypoxemia during veno-venous extracorporeal membrane oxygenation: exploring the limits of extracorporeal respiratory support(2014) NUNES, Liane Brescovici; MENDES, Pedro Vitale; HIROTA, Adriana Sayuri; BARBOSA, Edzangela Vasconcelos; MACIEL, Alexandre Toledo; SCHETTINO, Guilherme Pinto Paula; COSTA, Eduardo Leite Vieira; AZEVEDO, Luciano Cesar Pontes; PARK, MarceloOBJECTIVE: Veno-venous extracorporeal oxygenation for respiratory support has emerged as a rescue alternative for patients with hypoxemia. However, in some patients with more severe lung injury, extracorporeal support fails to restore arterial oxygenation. Based on four clinical vignettes, the aims of this article were to describe the pathophysiology of this concerning problem and to discuss possibilities for hypoxemia resolution. METHODS: Considering the main reasons and rationale for hypoxemia during veno-venous extracorporeal membrane oxygenation, some possible bedside solutions must be considered: 1) optimization of extracorporeal membrane oxygenation blood flow; 2) identification of recirculation and cannula repositioning if necessary; 3) optimization of residual lung function and consideration of blood transfusion; 4) diagnosis of oxygenator dysfunction and consideration of its replacement; and finally 5) optimization of the ratio of extracorporeal membrane oxygenation blood flow to cardiac output, based on the reduction of cardiac output. CONCLUSION: Therefore, based on the pathophysiology of hypoxemia during veno-venous extracorporeal oxygenation support, we propose a stepwise approach to help guide specific interventions.
- Characterization of critically ill adult burn patients admitted to a Brazilian intensive care unit(2014) CAMPOS, Edvaldo Vieira de; PARK, Marcelo; GOMEZ, David Souza; FERREIRA, Marcus Castro; AZEVEDO, Luciano Cesar PontesIntroduction: To characterize the evolution of clinical and physiological variables in severe adult burn patients admitted to a Brazilian burn ICU, we hypothesized that characteristics of survivors are different from non-survivors after ICU admission. Methods: A five-year observational study was carried out. The clinical characteristics, physiological variables, and outcomes were collected during this period. Results: A total of 163 patients required ICU support and were analyzed. Median age was 34 [25,47] years. Total burn surface area (TBSA) was 29 [18,43]%, and hospital mortality rate was 42%. Lethal burn area at which fifty percent of patients died (LA50%) was 36.5%. Median SAPS3 was 41 [34,54]. Factors associated with hospital mortality were analyzed in three steps, the first incorporated ICU admission data, the second incorporated first day ICU data, and the third incorporated data from the first week of an ICU stay. We found a significant association between hospital mortality and SAPS3 [OR(95%CI) = 1.114(1.062-1.168)], TBSA [OR(95%CI) = 1.043(1.010-1.076)], suicide attempts [OR(95%CI) = 8.126(2.284-28.907)], and cumulative fluid balance per liter within the first week [OR(95%CI) = 1.090(1.030-1.154)]. Inhalation injury was present in 45% of patients, and it was not significantly associated with hospital mortality. Conclusions: In this study of an ICU in a developing country, the mortality rate of critically ill burn patients was high and the TBSA was an independent risk factor for death. SAPS3 at admission and cumulative fluid balance in the first seven days, were also associated with unfavorable outcomes. The implementation of judicious fluid management after an acute resuscitation phase may help to improve outcomes in this scenario.
- The effects of discharge to an intermediate care unit after a critical illness: A 5-year cohort study(2014) RANZANI, Otavio T.; ZAMPIERI, Fernando Godinho; TANIGUCHI, Leandro Utino; FORTE, Daniel Neves; AZEVEDO, Luciano Cesar Pontes; PARK, MarceloPurpose: The impact of the intermediate care unit (IMCU) on post-intensive care unit (ICU) outcomes is controversial. Materials and Methods: We analyzed admissions from January 2003 to December 2008 from a mixed ICU in a teaching hospital in Brazil with a high patient-to-nurse ratio (3.5:1 on the ICU, 11:1 on the IMCU, 20-25:1 on the ward). A retrospective propensity-matched analysis was performed with data from 690 patients who were discharged after at least 3 days of ICU stay. Results: Of the 690 patients, 160 (23%) were discharged to the IMCU. A total of 399 propensity-matched patients were compared: 298 were discharged to the ward and 101 were discharged to the IMCU. Ninety-day mortality rate was similar between the IMCU and ward patients (22% vs 18%, respectively, P =. 37), as was the unplanned ICU readmission rate (P =. 63). In a multivariate logistic regression, discharge to the IMCU had no effect on the 90-day mortality rate (P = .27). Conclusions: In a resource-limited setting with a high patient-to-nurse ratio, discharge to IMCU had no impact on 90-day mortality rate and on unplanned readmission rate. The impact of discharge to the IMCU on the outcome for critically ill patients should be evaluated in further studies.
- Early sedation and clinical outcomes of mechanically ventilated patients: a prospective multicenter cohort study(2014) TANAKA, Lilian Maria Sobreira; AZEVEDO, Luciano Cesar Pontes; PARK, Marcelo; SCHETTINO, Guilherme; NASSAR JR., Antonio Paulo; REA-NETO, Alvaro; TANNOUS, Luana; SOUZA-DANTAS, Vicente Ces de; TORELLY, Andre; LISBOA, Thiago; PIRAS, Claudio; CARVALHO, Frederico Bruzzi; MAIA, Marcelo de Oliveira; GIANNINI, Fabio Poianas; MACHADO, Flavia Ribeiro; DAL-PIZZOL, Felipe; CARVALHO, Alexandre Guilherme Ribeiro de; SANTOS, Ronaldo Batista dos; TIERNO, Paulo Fernando Guimaraes Morando Marzocchi; SOARES, Marcio; SALLUH, Jorge Ibrain FigueiraIntroduction: Sedation overuse is frequent and possibly associated with poor outcomes in the intensive care unit (ICU) patients. However, the association of early oversedation with clinical outcomes has not been thoroughly evaluated. The aim of this study was to assess the association of early sedation strategies with outcomes of critically ill adult patients under mechanical ventilation (MV). Methods: A secondary analysis of a multicenter prospective cohort conducted in 45 Brazilian ICUs, including adult patients requiring ventilatory support and sedation in the first 48 hours of ICU admissions, was performed. Sedation depth was evaluated after 48 hours of MV. Multivariate analysis was used to identify variables associated with hospital mortality. Results: A total of 322 patients were evaluated. Overall, ICU and hospital mortality rates were 30.4% and 38.8%, respectively. Deep sedation was observed in 113 patients (35.1%). Longer duration of ventilatory support was observed (7 (4 to 10) versus 5 (3 to 9) days, P = 0.041) and more tracheostomies were performed in the deep sedation group (38.9% versus 22%, P=0.001) despite similar PaO2/FiO(2) ratios and acute respiratory distress syndrome (ARDS) severity. In a multivariate analysis, age (Odds Ratio (OR) 1.02; 95% confidence interval (CI) 1.00 to 1.03), Charlson Comorbidity Index >2 (OR 2.06; 95% Cl, 1.44 to 2.94), Simplified Acute Physiology Score 3 (SAPS 3) score (OR 1.02; Cl 95%, 1.00 to 1.04), severe ARDS (OR 1.44; Cl 95%, 1.09 to 1.91) and deep sedation (OR 2.36; Cl 9596, 1.31 to 4.25) were independently associated with increased hospital mortality. Conclusions: Early deep sedation is associated with adverse outcomes and constitutes an independent predictor of hospital mortality in mechanically ventilated patients.
- Daily sedative interruption versus intermittent sedation in mechanically ventilated critically ill patients: a randomized trial(2014) NASSAR JUNIOR, Antonio Paulo; PARK, MarceloBackground: Daily sedative interruption and intermittent sedation are effective in abbreviating the time on mechanical ventilation. Whether one is superior to the other has not yet been determined. Our aim was to compare daily interruption and intermittent sedation during the mechanical ventilation period in a low nurse staffing ICU. Methods: Adult patients expected to need mechanical ventilation for more than 24 hours were randomly assigned, in a single center, either to daily interruption of continuous sedative and opioid infusion or to intermittent sedation. In both cases, our goal was to maintain a Sedation Agitation Scale (SAS) level of 3 or 4; that is patients should be calm, easily arousable or awakened with verbal stimuli or gentle shaking. Primary outcome was ventilator-free days in 28 days. Secondary outcomes were ICU and hospital mortality, incidence of delirium, nurse workload, self-extubation and psychological distress six months after ICU discharge. Results: A total of 60 patients were included. There were no differences in the ventilator-free days in 28 days between daily interruption and intermittent sedation (median: 24 versus 25 days, P = 0.160). There were also no differences in ICU mortality (40 versus 23.3%, P = 0.165), hospital mortality (43.3 versus 30%, P = 0.284), incidence of delirium (30 versus 40%, P = 0.472), self-extubation (3.3 versus 6.7%, P = 0.514), and psychological stress six months after ICU discharge. Also, the nurse workload was not different between groups, but it was reduced on day 5 compared to day 1 in both groups (Nurse Activity Score (NAS) in the intermittent sedation group was 54 on day 1 versus 39 on day 5, P<0.001; NAS in daily interruption group was 53 on day 1 versus 38 on day 5, P<0.001). Fentanyl and midazolam total dosages per patient were higher in the daily interruption group. The tidal volume was higher in the intermittent sedation group during the first five days of ICU stay. Conclusions: There was no difference in the number of ventilator-free days in 28 days between both groups. Intermittent sedation was associated with lower sedative and opioid doses.
- An increase in mean platelet volume after admission is associated with higher mortality in critically ill patients(2014) ZAMPIERI, Fernando G.; RANZANI, Otavio T.; SABATOSKI, Viviane; SOUZA, Heraldo Possolo de; BARBEIRO, Hermes; DA NETO, Luiz Monteiro Cruz; PARK, Marcelo; SILVA, Fabiano Pinheiro daBackground: Platelet activation and consumption are common in critically ill patients and are associated with poorer prognosis. Mean platelet volume is a simple surrogate for platelet activation, with higher MPV being associated with worse clinical condition on a large array of clinical diagnoses. We therefore aimed to investigate associations between changes in platelet count and mean platelet volume (MPV) with prognosis and inflammatory cytokine values in critically ill patients. Methods: This study prospectively included 84 critically ill patients. Patients were stratified into four groups according to proportional changes in MPV (Delta MPV24h) and platelet count (Delta Plat(24h)) in the first 24 hours after admission. Mortality between groups was compared using the chi(2) test. Logistic regression was performed using hospital mortality as outcome and Simplified Acute Physiology Score (SAPS 3), Delta Plat(24h) and Delta MPV24h as covariates. Concentrations of the following inflammatory mediators were measured using Miliplex (R) technology: IL1 beta, IL6, IL8, IL10, epidermal growth factor, vascular endothelial growth factor, TNF alpha and IFN alpha. Cytokine concentrations were compared between groups using the Kruskal-Wallis test with Bonferroni correction. Results: Patients in whom MPV increased and platelet count decreased had higher mortality rates (46%). According to logistic regression, Delta MPV24h was independently associated with increased mortality (OR 1.28 per 1% increase; 95% CI 1.08 to 1.48). No strong associations between inflammatory mediators and changes in MPV and platelet count were found. Conclusion: An increase in MPV after admission to an ICU is independently associated with higher hospital mortality.
- Despertar, exercitar, sentar-se, deambular e extubar: uma mudança nos paradigmas para pacientes mecanicamente ventilados(2014) PARK, Marcelo; PIRES-NETO, Ruy Camargo; NASSAR JUNIOR, Antonio Paulo
- Ultrasound-guided percutaneous tracheostomy: a feasible alternative for tetanus patients(2014) JOELSONS, Daniel; HO, Yeh-Li; PARK, Marcelo