Gilson Soares Feitosa-Filho

Use of beta-blockers for the treatment of cardiac arrest due to ventricular fibrillation/pulseless ventricular tachycardia: A systematic review

INTRODUCTION Advanced Life Support guidelines recommend the use of epinephrine during Cardiopulmonary Resuscitation (CPR), as to increase coronary blood flow and perfusion pressure through its alpha-adrenergic peripheral vasoconstriction, allowing minimal rises in coronary perfusion pressure to make defibrillation possible. Contrasting to these alpha-adrenergic effects, epinephrines beta-stimulation may have deleterious effects through an increase in myocardial oxygen consumption and a reduction of subendocardial perfusion, leading to postresuscitation cardiac dysfunction. OBJECTIVE The present paper consists of a systematic review of the literature regarding the use of beta-blockade in cardiac arrest due to ventricular fibrillation (VF) and pulseless ventricular tachycardia (VT). METHODS Studies were identified through MEDLINE electronic databases research and were included those regarding the use of beta-blockade during CPR. RESULTS Beta-blockade has been extensively studied in animal models of CPR. These studies not only suggest that beta-blockade could reduce myocardial oxygen requirements and the number of shocks necessary for defibrillation, but also improve postresuscitation myocardial function, diminish arrhythmia recurrences and prolong survival. A few case reports described successful beta-blockade use in patients, along with two prospective human studies, suggesting that it could be safe and effectively used during cardiac arrest in humans. CONCLUSION Even though the existing literature points toward a beneficial effect of beta-blockade in patients presenting with cardiac arrest due to VF/pulseless VT, high quality human trials are still lacking to answer this question definitely.

Cardiopulmonary exercise and 6-min walk tests as predictors of quality of life and long-term mortality among patients with heart failure due to Chagas disease

long-term mortality among patients with heart failure due to Chagas disease☆ Luiz Eduardo Ritt , Antonio Carlos Carvalho , Gilson Soares Feitosa , Joel A. Pinho-Filho , Marcus Vinicius Santos Andrade , Gilson Soares Feitosa-Filho , L. Kristin Newby , Renato D. Lopes a,c,d,⁎ a Cardiology Division, Sao Paulo Federal University, Sao Paulo, Brazil b Cardiology Division, Santa Izabel Hospital, Bahia, Brazil c Brazilian Clinical Research Institute, Sao Paulo, Brazil d Duke Clinical Research Institute, Durham, NC, USA

Decompensated chagasic heart failure versus non-chagasic heart failure at a tertiary care hospital: Clinical characteristics and outcomes

OBJECTIVE To evaluate clinical and epidemiological characteristics and clinical outcomes in patients hospitalized with decompensated heart failure (DHF), with a comparison between Chagas and non-Chagas disease. METHOD This is a retrospective cohort study involving 136 patients consecutively admitted with DHF between January 1 and December 31, 2011, with the following outcomes: acute renal failure, cardiogenic shock, rehospitalization, and hospital death. Individuals aged ≥ 18 years with DHF were included while those with more than 10% of missing data regarding outcomes were excluded. Statistical analysis was performed using SPSS version 17.0. Chi-squared test was used to compare proportions. Students T test was used to compare means. Kaplan-Meier and log-rank tests were used to compare rehospitalization rates between the two groups over time. RESULTS Chagasic and non-chagasic patients were compared. The first had lower mean systolic blood pressure (111.8±18.4 versus 128.8±24.4, p<0.01), lower mean diastolic blood pressure (74.5±13.6 versus 82.0±15.2, p<0.01) and lower left ventricular ejection fraction (26.5±6.2 versus 41.5±18.9, p<0.01). In all, 20 patients with Chagas (50.1%) were rehospitalized, compared to 35 patients in the non-Chagas group (35.4%, p=0.04). Log rank test = 4.5 (p<0.01) showed that rehospitalization rates between the two groups over time (Kaplan-Meier curves) differed. CONCLUSION Chagas disease was associated with lower systolic and diastolic blood pressure and lower left ventricular ejection fraction. The rehospitalization rate was higher in Chagas disease.

Puntuación Heart Failure Survival Score en pacientes con enfermedad de Chagas, correlación con variables funcionales

INTRODUCTION AND OBJECTIVES Chagas disease is a prevalent cause of heart failure in Latin America, and its prognosis is worse than other etiologies. The Heart Failure Survival Score has been used to assess prognosis in patients with heart failure; however, this score has not yet been studied in patients with Chagas cardiopathy. METHODS The Heart Failure Survival Score was calculated in 55 patients with severe left ventricular systolic dysfunction due to Chagas disease. Correlations were assessed between the Heart Failure Survival Score and variables obtained from, cardiopulmonary exercise tests, quality-of-life measures, and 6-minute walking tests. RESULTS Patients were distributed among New York Heart Association classes II-IV; 89% were taking angiotensin-converting enzyme inhibitors or angiotensin receptor blockers, 62% were taking beta-blockers, 86% were taking diuretics, and 74% were taking aldosterone receptor blockers. The mean Heart Failure Survival Score was 8.75 (0.80). The score correlated well with cardiopulmonary test variables such as peak oxygen uptake (0.662; P<.01), oxygen uptake at the anaerobic threshold (0.644; P<.01), ventilation carbon dioxide efficiency slope (-0.417; P<.01), oxygen pulse (0.375; P<.01), oxygen uptake efficiency slope (0.626; P<.01), 6-minute walking test (0.370; P<.01), left ventricle ejection fraction (0.650; P=.01), and left atrium diameter (-0.377; P<.01). There was also a borderline significant correlation between the Heart Failure Survival Score and quality of life (-0.283; P<.05). CONCLUSIONS In heart failure patients with Chagas disease, the Heart Failure Survival Score correlated well with the main prognostic functional test variables.

Motivos relacionados à escolha da medicina intensiva como especialidade por médicos residentes

OBJECTIVES: Critical Care Medicine is a relatively new specialty, which in recent years has made significant progress in Brazil. However, few physicians are willing to acquire this specialization. The main objective of this study was to describe the factors associated with choice of Critical Care Medicine as a specialty by medical residents of Salvador-BA. METHODS: A cross-sectional and descriptive study, in which a questionnaire was submitted to all residents of the specialties that are a prerequisite for Critical Care Medicine (Clinical Medicine, General Surgery and Anesthesiology), between October and December 2007. RESULTS: The study included 165 residents (89.7% of the total), in which 51.5% were clinical medicine residents, 25.5% were general surgery residents, and 23.0% were anesthesiology residents. Of the respondents, 14 (9.1%) intended to enter Critical Care Medicine residency, although 90 (54.5%) were willing to become intensive care unit physicians after their regular residency. The main reason stated to specialize in critical care medicine was to like work with critically ill patients (92.9%). The main reasons stated not to specialize in critical care medicine, however were related with the poorer quality of life and work. Residents who did intensive care unit initernship during medical studies were more likely to work in an intensive care units after residency. CONCLUSIONS: This population showed little interest to specialize in critical care medicine. The main reasons given for this limited interest were factors related to quality of life and intensive care unit environment. A national survey is required to identify the interventions needed to favor this specialization.

Atualização em reanimação cardiopulmonar: o que mudou com as novas diretrizes

BACKGROUND AND OBJECTIVES: New resuscitation guidelines contain significant changes intended to improve resuscitation practice and survival from cardiac arrest. This article provides an overview of the key changes on resuscitation for healthcare provider. CONTENTS: There are several new recommendations on cardiopulmonary resuscitation (CPR), the major are intended to provide good circulation during cardiac arrest. The most important change is the emphasis on high-quality chest compressions with minimal interruptions. The universal 30:2 ratio is recommended to simplify training, to achieve optimal compression rates and to reduce the frequency of interruptions. Only one shock is delivered when indicated, followed immediately by CPR. This shock should be of 120-200J on a biphasic wave or 360J on a monophasic wave. Rescuers should not interrupt chest compressions to check rhythm until after about 5 cycles or approximately 2 minutes of CPR. After this period, if an organized rhythm is present, the healthcare provider should check for a pulse. There are several little changes about the drugs administrated during CPR according to the rhythm. Given the lack of documented effect of drug therapy in improving long-term outcome from cardiac arrest, the sequence for CPR deemphasizes drug administration and reemphasizes basic life support. CONCLUSIONS: The update on the new resuscitation guidelines is important to improve the quality of resuscitation and achieve better survival rates from our critical care patients.

Characteristics of training and motivation of physicians working in emergency medicine

Introduction: Emergency medicine is an area in which correct decisions often need to be made fast, thus requiring a well-prepared medical team. There is little information regarding the profile of physicians working at emergency departments in Brazil. Objective: To describe general characteristics of training and motivation of physicians working in the emergency departments of medium and large hospitals in Salvador, Brazil. Method: A cross-sectional study with standardized interviews applied to physicians who work in emergency units in 25 medium and large hospitals in Salvador. At least 75% of the professionals at each hospital were interviewed. One hospital refused to participate in the study. Results: A total of 659 physicians were interviewed, with a median age of 34 years (interquartile interval: 29-44 years), 329 (49.9%) were female and 96 (14.6%) were medical residents working at off hours. The percentage of physicians who had been trained with Basic Life Support, Advanced Cardiovascular Life Support and Advanced Trauma Life Support courses was 5.2, 18.4 and 11.0%, respectively, with a greater frequency of Advanced Cardiovascular Life Support training among younger individuals (23.6% versus 13.9%; p<0.001). Thirteen percent said they were completely satisfied with the activity, while 81.3% expressed a desire to stop working in emergency units in the next 15 years, mentioning stress levels as the main reason. Conclusion: The physicians interviewed had taken few emergency immersion courses. A low motivational level was registered in physicians who work in the emergency departments of medium and large hospitals in Salvador.

SBC guidelines on unstable angina and non-ST-elevation myocardial infarction: executive summary.

Sources of Funding There were no external funding sources for this study. Study Association This study is not associated with any thesis or dissertation work.

Highlights from the Tenth International Symposium of Thrombosis and Anticoagulation (ISTA X), September 22 and 23, 2017, Salvador, Bahia, Brazil

To discuss and share knowledge about advances in the care of patients with thrombotic disorders, the Tenth International Symposium of Thrombosis and Anticoagulation was held in Salvador, Bahia, Brazil, on September 22 and 23, 2017. This scientific program was developed by clinicians for clinicians and was promoted by two major clinical research institutes—the Brazilian Clinical Research Institute and the Duke Clinical Research Institute of the Duke University School of Medicine. Comprising academic presentations and open discussion, the symposium had as its primary goal to educate, motivate, and inspire internists, cardiologists, hematologists, and other physicians by convening national and international visionaries, thought-leaders, and dedicated clinician-scientists. This paper summarizes the symposium proceedings.

Evaluation of the Bleeding Intensity of Patients Anticoagulated with Warfarin or Dabigatran Undergoing Dental Procedures

Background Thrombotic disorders remain one of the leading causes of death in the Western world. Dabigatran appeared as an alternative to warfarin for anticoagulation in the treatment of atrial fibrillation (AF). The risk associated with bleeding due to its use has been documented in several randomized clinical trials, but no large study has examined in detail the risk of bleeding during dental extraction and other dental procedures involving bleeding. Objective To compare the intensity of bleeding in individuals taking dabigatran or vitamin K antagonist (warfarin) and undergoing dental procedures. Methods Prospective, single-center, controlled study with one single observer. Patients diagnosed with nonvalvular AF, on warfarin or dabigatran, cared for at a cardiology referral center, and requiring single or multiple dental extractions, were evaluated up to seven days post-extraction. The following outcomes were assessed: bleeding time between the beginning and the end of suture and complete hemostasis; bleeding before the procedure, after 24 hours, 48 hours, 7 days, during and after suture removal (late); p<0.05 was defined as of statistical relevance. Results We evaluated 37 individuals, 25 in the warfarin group and 12 in the dabigatran group. Age, sex, weight, height, blood pressure, color, schooling, family income and comorbidities were similar between the two groups. Regarding bleeding after 24 hours of the procedure, no one in the dabigatran group had bleeding, whereas 32% in the warfarin group had documented bleeding (p = 0.028). The other variables analyzed did not differ between the groups. Conclusions This study suggests that, regarding dental extraction, there is no statistically significant difference in the intensity of bleeding of patients taking dabigatran as compared to those taking warfarin. Bleeding 24 hours after the procedure was less frequent among patients on dabigatran.