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1.
Pan Afr Med J ; 33: 114, 2019.
Artigo em Francês | MEDLINE | ID: mdl-31489092

RESUMO

Introduction: Sudden death that occurs during sporting activity affects patients with ignored heart disease. Black athlete's ECG has been little studied and the features of this ethnic group have been discussed. This study aims to study the epidemiological profile and the peculiarities of repolarization of black athletes. Methods: We conducted a descriptive study of black athletes selected among all the athletes followed in the sectoral Center of Sports Science and Medicine in Sousse over a period of 8 months from March to October 2014. Data were collected using a medical questionnaire. Results: Data on 35 athletes were collected, with a male predominance (94,28%), with an average age of 24,34 years. Four athletes had left ventricular hypertrophy on cardiac ultrasound. There were 8 athletes with atrioventricular block degree I and 8 athletes with electrical type of left ventricular hypertrophy (LVH). ST segment changes were more marked at the level of precordial leads. Five athletes (14.2%) had inverted T waves in V2 and V3. These were the same athletes who ST-segment depression in these same leads. Early repolarization was found in 3 athletes. All these cases had notch signaling. Conclusion: Black athletes have quite specific electrical modifications which are important to know. However, our sample is not sufficiently large to certify these results. A comparative study of white athletes would be very interesting.


Assuntos
Arritmias Cardíacas/diagnóstico , Atletas , Cardiopatias/diagnóstico , Hipertrofia Ventricular Esquerda/diagnóstico , Adolescente , Adulto , Grupo com Ancestrais do Continente Africano , Arritmias Cardíacas/epidemiologia , Bloqueio Atrioventricular/diagnóstico , Bloqueio Atrioventricular/epidemiologia , Morte Súbita/prevenção & controle , Ecocardiografia , Eletrocardiografia/métodos , Feminino , Cardiopatias/epidemiologia , Humanos , Hipertrofia Ventricular Esquerda/epidemiologia , Masculino , Estudos Retrospectivos , Esportes , Inquéritos e Questionários , Adulto Jovem
3.
Int. j. cardiovasc. sci. (Impr.) ; 32(4): 343-354, July-Aug. 2019. tab
Artigo em Inglês | LILACS | ID: biblio-1012341

RESUMO

Peak oxygen consumption (VO2peak) is an important prognostic marker and its classification helps the cardiologist in the therapeutic decision-making process. The most commonly used cardiorespiratory fitness (CRF) classification has not been validated for the Brazilian population. Objective: To elaborate a CRF classification using a Brazilian sample and to compare it with the American Heart Association (AHA), Cooper and UNIFESP classifications. Methods: A total of 6,568 healthy subjects were analyzed through cardiopulmonary exercise testing (CPET). They were distributed by sex and the following age groups (years): 7-12, 13-19, 20-79 (per decades) and > 80 years. After measurement of the VO2peak, participants were distributed into quintiles of CRF in very poor, poor, moderate, high and very high (AEMA Table). The CRF classifications by AEMA, AHA, Cooper, and UNIFESP were compared using the Wilcoxon, Kappa and concordance percentages. Results: VO2peak presented an inverse and moderate correlation with age considering both sexes (R = -0.488, p < 0.001). All paired comparisons between CRF classification systems showed differences (p < 0.001) and disagreement percentage - AEMA versus AHA (k = 0.291, 56.7%), AEMA versus Cooper (k = 0.220, 62.4%) and AEMA versus UNIFESP (k = 0.201, 63.9 %). Conclusion: The AEMA table showed important discrepancies in the classification of CRF when compared to other tables widely used in our setting. Because it was obtained from a large sample of the Brazilian population, the AEMA table should be preferred over other classification systems in our population


Assuntos
Humanos , Masculino , Feminino , Brasil , Amostragem , Aptidão Cardiorrespiratória , Consumo de Oxigênio , Ecocardiografia/métodos , Doenças Cardiovasculares/mortalidade , Exercício , Fatores Sexuais , Análise Estatística , Fatores Etários , Eletrocardiografia/métodos , Teste de Esforço/métodos , Saúde da População
4.
Int. j. cardiovasc. sci. (Impr.) ; 32(4): 414-417, July-Aug. 2019.
Artigo em Inglês | LILACS, Sec. Est. Saúde SP, SESSP-IDPCPROD, Sec. Est. Saúde SP | ID: biblio-1012339

RESUMO

Sports competition can be a trigger to fatal arrhythmias in predisposed individuals, leading to sudden cardiac death. Athletes have 2.8 fold more risk of sudden cardiac death than non-athletes. However, female athletes seem to have some cardiac protection, dying suddenly much less than men during sports. Although the mechanisms for this protection have not been well established until now, hormonal, genetic and molecular factors may play a role in it. The so-called "fair sex" might harbour the key for sudden cardiac death prevention


Assuntos
Humanos , Masculino , Feminino , Esportes/fisiologia , Prevalência , Morte Súbita Cardíaca/prevenção & controle , Arritmias Cardíacas , Cardiomiopatia Hipertrófica , Doença da Artéria Coronariana , Fatores Sexuais , Eletrocardiografia/métodos
5.
Int. j. cardiovasc. sci. (Impr.) ; 32(4): 368-373, July-Aug. 2019. tab, graf
Artigo em Inglês | LILACS, Sec. Est. Saúde SP, SESSP-IDPCPROD, Sec. Est. Saúde SP | ID: biblio-1012344

RESUMO

Cardiopulmonary exercise testing is widely used in the evaluation of patients with left ventricular dysfunction, and some of these patients have an implantable cardioverter-defibrillator (ICD). However, this test presents specific challenges because of the susceptibility to ventricular arrhythmias during maximal levels of exercise. Objective: To evaluate the safety of cardiopulmonary exercise testing in patients with ICD. Methods: The study included patients with ICD who underwent cardiopulmonary exercise testing between 2007 and 2015. The tests were completed once the electronic devices were programmed. The maximum allowed heart rate reached during exercise was 10 beats below the first therapy zone programmed. Results: The study included 69 patients with mean age 53.7 ± 10.8 years, including 68% men. Exercise time was 8.7±2.3 minutes, with peak oxygen consumption of 13.3 ± 4.3 ml.kg-1.min-1. Peak heart rate was 62.9 ± 13.4% of the maximum rate predicted, with all patients taking specific medication. Ventricular arrhythmia was observed in 29% of the patients, and paired ventricular extrasystoles, ventricular bigeminism or non-sustained ventricular tachycardia were observed in only 14.5% of the patients. There was no sustained ventricular arrhythmia resulting in ICD therapy or other complications, such as inappropriate therapies. The frequency of severe events was 0%, 95% CI (0 - 5.2%). Conclusion: In the sample of patients evaluated, the cardiopulmonary exercise testing was shown to be safe during its performance in a hospital setting, following the safety standards


Assuntos
Humanos , Masculino , Feminino , Pessoa de Meia-Idade , Estudos Retrospectivos , Desfibriladores Implantáveis , Teste de Esforço/métodos , Consumo de Oxigênio , Arritmias Cardíacas , Doenças Cardiovasculares , Índice de Massa Corporal , Morte Súbita Cardíaca , Eletrocardiografia/métodos , Frequência Cardíaca
6.
Med Clin North Am ; 103(5): 785-791, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31378325

RESUMO

Palpitation is common. It is often accompanied by dizziness, lightheadedness, near syncope, and even syncope. It may be difficult to confirm a diagnosis in patients with infrequent symptoms. Several tools are available to document arrhythmias in the workup of a patient with palpitation, including 24-hour Holter monitoring, 30-day external continuous monitoring, and implantable loop recorders. A number of private companies are now able to empower patients to monitor heart rates and even give accurate rhythm strips. This article reviews the current data on how to make the diagnosis and which tools to use in the primary care setting.


Assuntos
Arritmias Cardíacas/diagnóstico , Eletrocardiografia/instrumentação , Eletrocardiografia/métodos , Eletrocardiografia Ambulatorial , Humanos , Avaliação de Sintomas , Fatores de Tempo
7.
Int. j. cardiovasc. sci. (Impr.) ; 32(4): 374-383, July-Aug. 2019. tab, ilus
Artigo em Inglês | LILACS | ID: biblio-1012347

RESUMO

Maximal oxygen uptake (VO2max) and both first (VT1) and second (VT2) thresholds have been used as reference points for exercise prescription in different populations. Objective: We aimed to test the hypothesis that exercise prescription, based on VTs determined by treadmill cardiopulmonary exercise testing (CPET), is influenced by the rate of increase in treadmill workload. Methods: Nine healthy individuals underwent two CPETs, followed by two sessions of submaximal exercise, both in randomized order. For the "speed" protocol, there was an increment of 0.1 to 0.3 km.h-1 every 15s. The "grade" incremental protocol increased 1% every 30s and 0.1 km.h-1 every 45s. This was followed by submaximal exercise sessions lasting 40min at an intensity corresponding to heart rate (HR) between the VT1 and VT2. Results: The "speed" protocol resulted in higher VT1 (p = 0.01) and VT2 (p = 0.02) when compared to the "grade" incremental protocol, but there was no effect on VO2max. The target HR for the submaximal exercise sessions was higher in the "speed" protocol compared to the "grade" incremental protocol (p < 0.01) and remained stable during the two steady-state exercise sessions. Blood lactate remained stable during the submaximal exercise sessions, with higher values observed during the "speed" protocol than those "grade" incremental protocol (p < 0.01). Conclusions: Compared to a grade-based protocol, a speed-based protocol resulted in higher VT1 and VT2, which significantly affected cardiorespiratory and metabolic responses to prescribed exercise intensity in healthy young adults


Assuntos
Humanos , Masculino , Feminino , Adulto , Tolerância ao Exercício , Teste de Esforço/métodos , Consumo de Oxigênio , Prognóstico , Doenças Cardiovasculares/diagnóstico , Exercício , Protocolos/métodos , Eletrocardiografia/métodos , /métodos , Frequência Cardíaca
8.
Int. j. cardiovasc. sci. (Impr.) ; 32(4): 391-395, July-Aug. 2019. graf
Artigo em Inglês | LILACS | ID: biblio-1012351

RESUMO

Prior statements have recommended restriction from competitive sports participation for all athletes with ICDs. Recent data, however, suggests that many athletes can participate in sports without adverse events. In the ICD Sports Registry, 440 athletes, aged 8-60 years, 77 of which were high-level interscholastic athletes, who had continued to practice sports, were prospectively followed for 4 years, with no deaths or failures to defibrillate during practice, and no injuries related to arrhythmia or shock during sports. Shocks did occur, for ventricular and supraventricular arrhythmias. While more athletes received shocks during physical activity than at rest, there were no differences between competition or practice, versus other physical activity. Programming with higher rate cut-offs and longer durations was associated with fewer inappropriate shocks, with no increase in syncope. Based on this study, current recommendations now state that returning to competition may be considered for an athlete with an ICD. In considering this decision, the underlying disease and type of sport should be discussed, and shared decision-making between doctor, patient, and often family, is critical


Assuntos
Humanos , Masculino , Feminino , Criança , Adolescente , Adulto , Pessoa de Meia-Idade , Esportes , Desfibriladores Implantáveis , Atletas , Qualidade de Vida , Esportes , Síncope , Doenças Cardiovasculares/mortalidade , Exercício , Morte Súbita Cardíaca/prevenção & controle , Eletrocardiografia/métodos
9.
Medicine (Baltimore) ; 98(34): e16636, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31441838

RESUMO

Electrocardiography (ECG) is essential to detect and diagnose life threatening cardiac conditions and to determine further treatment. Correct interpretation of an ECG can be challenging, especially in the out-of-hospital setting and by less experienced emergency team members.The aim of this study was to compare the rate of ECG transmission from an out-of-hospital emergency scene to an in-hospital cardiologist on call in EMS-B and EMS-S providers and its impact on direct transportation to a cardiac catheterization laboratory and hospital admission.The study was designed as an observational study. Data from 3 separate emergency medical service teams were collected. Two teams are staffed by paramedics only (EMT-B), while another specialized team is staffed with an emergency physician (EMT-S). 5864 out-of-hospital emergencies were performed during a 12-month period and were analyzed for this study.In 124 out of 5864 (2.1%) out-of-hospital emergencies, an ECG transmission from the out-of-hospital scene to an in-hospital cardiologist on call was performed. Rate of transmission was similar between both teams (EMT-B n = 70, 2.2% vs EMT-S n = 54, 2.0%, P = .054). After coordinating with the cardiologist on call, 11 patients (15.7%) of the EMT-B (15.7%) and 24 patients (44.4%) of the EMT-S were directly transported from the scene of emergency to a cardiac catheterization laboratory (P < .001). Overall, 80% of patients treated by EMT-S, compared to 52.5% treated by the EMT-B required subsequent hospital admission (P < .05).Transmission of ECG from the out-of-hospital emergency scene to the in-hospital cardiologist is infrequently performed. The rate of STEMI in transmitted ECG's by emergency teams staffed with an emergency physician was higher compared to emergency teams staffed with paramedics only.


Assuntos
Cardiologistas/organização & administração , Eletrocardiografia/métodos , Serviços Médicos de Emergência/organização & administração , Parada Cardíaca Extra-Hospitalar/diagnóstico , Telemedicina/organização & administração , Institutos de Cardiologia/organização & administração , Humanos , Admissão do Paciente , Estudos Retrospectivos
10.
ABC., imagem cardiovasc ; 32(3): 214-216, jul.-set. 2019. ilus
Artigo em Português | LILACS | ID: biblio-1006712

RESUMO

Relatamos o caso de um paciente jovem admitido no pronto-socorro com quadro de dor precordial. O eletrocardiograma de admissão identificou supradesnivelamento do segmento ST localizado em parede lateral associado à imagem em "espelho", com enzimas cardíacas altamente elevadas, o que sugere diagnóstico de síndrome coronariana com supradesnivelamento de ST. O ecocardiograma evidenciou derrame pericárdico com fração de ejeção preservada e ausência de alterações segmentares, sugerindo, assim, pericardite aguda, com comprometimento do miocárdio. Desta forma, foi realizada ressonância magnética cardíaca, que evidenciou presença de realce tardio não isquêmico, confirmando o diagnóstico de perimiocardite. Trata-se de situação pouco frequente na prática clínica e que merece maior compreensão e atenção por parte dos médicos que trabalham em prontos-socorros


Assuntos
Humanos , Masculino , Adolescente , Eletrocardiografia/métodos , Miocardite , Derrame Pericárdico/complicações , Derrame Pericárdico/diagnóstico , Infecção/complicações , Infarto do Miocárdio
11.
Gene ; 714: 143990, 2019 Sep 25.
Artigo em Inglês | MEDLINE | ID: mdl-31326550

RESUMO

BACKGROUND: Progressive cardiac conduction defect (PCCD), also known as Lenegre-Lev disease, is one of the most common heart conduction abnormalities. Previous studies have screened for known mutation sites that cause heart block in a 68-person family with a history of PCCD, revealed no mutations. OBJECTIVE: To screen pathogenic genes of the PCCD family and to study the function of the gene mutations related to heart block diseases. METHODS: Whole exome sequencing (WES) was performed on two PCCD patients and one non-PCCD family member to find the related pathogenic gene. After family co-segregation and preliminary functional analysis, we identified the mutant gene CLCA2. To study the function of this gene, we constructed mutant-gene mice using CRISPR-Cas9 technology, and electrocardiogram monitoring was performed after genotype verification. RESULTS: The CLCA2 c.G1725T mutation was identified and co-segregated with the phenotype. The analysis showed that the CLCA2 c.G1725T mutation is harmful and mainly affects protein glycosylation. Immunofluorescence staining revealed that CLCA2 was highly expressed in the sinoatrial node (SAN) tissues. Electrocardiogram monitoring of the mice revealed that CLCA2 point mutations induced mild conduction block and ectopic pacemakers. CONCLUSION: Our findings indicate that a novel heterozygous missense mutation c.G1725T of the CLCA2 gene may be associated with heart block disease and the mutation in this gene may lead to sinus node lesions and conduction blocking.


Assuntos
Canais de Cloreto/genética , Bloqueio Cardíaco/genética , Mutação de Sentido Incorreto/genética , Sequência de Aminoácidos , Animais , Eletrocardiografia/métodos , Feminino , Heterozigoto , Humanos , Masculino , Camundongos , Linhagem , Fenótipo , Mutação Puntual/genética , Nó Sinoatrial/patologia
12.
Pesqui. vet. bras ; 39(6): 409-415, June 2019. tab, graf
Artigo em Inglês | LILACS, VETINDEX | ID: biblio-1012758

RESUMO

Rats and mice are the most common species used in experimental cardiac electrophysiology studies. Electrocardiogram (ECG) recording shows paramount importance for monitoring arrhythmias and cardiac function in several disease models, including QT syndrome. However, the lack of standardized reference values and QT correction formula for different animal species and lineages represent a challenge for ECG interpretation. The aim of this study is to provide an improved method for ECG recording, establishing reference range values and determine the QT formulas with higher correlation to heart rate (HR). A total of 10 Wistar rats, 10 Swiss mice, 10 C57BL/6 mice and 10 FVB/NJ mice were used in the study. Animals were submitted to anesthesia with isoflurane and ECG recording was performed using a six-channel non-invasive electrocardiograph. QT was corrected using the following formulas: Bazzett, Fridericia, Mitchell, Hodges, Van der Water and Framingham. Normal range values for ECG parameters were established in all animals studied. Pearsons' correlation defined Hodges formula as the most suitable for QT correction. This study demonstrated an improved method of ECG recording with reference values for Swiss, FVB/NJ, C57BL/6 mice, and Wistar rats. Hodges' formula was the most effective formula for QT correction in rodents, whereas Bazett's and Friderica formulas were ineffective for such animals. The present work contributes to arrhythmias investigation in experimental cardiology and may reduce misinterpretations in rodents' ECG.(AU)


Ratos e camundongos são as espécies mais comumente utilizadas em estudos experimentais de eletrofisiologia cardíaca. O registro do eletrocardiograma (ECG) é de suma importância para o monitoramento de arritmias e função cardíaca em vários modelos de patologias. No entanto, a falta de valores de referência padronizados e a fórmula de correção do QT para diferentes espécies e linhagens animais representam um desafio para a interpretação do ECG. O objetivo deste estudo é fornecer um método melhorado para o registro de ECG, estabelecendo valores de referência e determinar as fórmulas QT com maior correlação com a freqüência cardíaca (FC). Um total de 10 ratos Wistar, 10 camundongos Swiss, 10 camundongos C57BL/6 e 10 camundongos FVB/NJ foram utilizados no estudo. Os animais foram submetidos à anestesia com isoflurano e o registro de ECG foi realizado com eletrocardiógrafo não invasivo de seis canais. O QT foi corrigido usando as seguintes fórmulas: Bazzett, Fridericia, Mitchell, Hodges, Van der Water e Framingham. Os valores da normalidade para os parâmetros do ECG foram estabelecidos em todos os animais estudados. A correlação de Pearson definiu a fórmula de Hodges como a mais adequada para a correção do QT. Este estudo demonstra um método melhorado de registro de ECG com valores de referência para camundongos Swiss, FVB/NJ, C57BL/6 e Wistar. A fórmula de Hodges foi a mais eficaz para correção de QT em roedores, enquanto as fórmulas de Bazett e Friderica apresentaram valores mais baixos de correlação. O presente trabalho contribui para a investigação de arritmias em cardiologia experimental e pode reduzir interpretações erradas no ECG de roedores.(AU)


Assuntos
Animais , Roedores/fisiologia , Eletrocardiografia/métodos , Anestesia/veterinária
13.
Int. j. cardiovasc. sci. (Impr.) ; 32(3): 293-296, May-June 2019. ilus
Artigo em Inglês | LILACS | ID: biblio-1002217

RESUMO

Ventricular non-compaction occurs due to failure in myocardial morphogenesis during the fetal period. Patients can have heart failure, as well as systemic complications due to thromboembolism and cardiac arrhythmias. Early diagnosis is essential. We present the case of an asymptomatic 49-year-old woman who initially manifested ventricular extrasystoles and heart failure with reduced ejection fraction and a myocardial noncompaction diagnosis


Assuntos
Humanos , Feminino , Pessoa de Meia-Idade , Complexos Cardíacos Prematuros/diagnóstico , Miocárdio Ventricular não Compactado Isolado , Arritmias Cardíacas , Diagnóstico por Imagem , Ecocardiografia/métodos , Espectroscopia de Ressonância Magnética/métodos , Taquicardia Ventricular , Eletrocardiografia/métodos , Ventrículos do Coração/diagnóstico por imagem , Cardiomiopatias
14.
Int. j. cardiovasc. sci. (Impr.) ; 32(3): 227-237, May-June 2019. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1002219

RESUMO

The knowledge on the management of patients with acute coronary syndrome (ACS) is essential to reduce the gap between evidence and practice. Objective: To describe a simulation training strategy for emergency healthcare professionals and provide preliminary data on knowledge acquisition, learners' confidence and prescription of medications after training. Methods: The training was part of the implementation of two myocardial infarction systems of care. It comprehended lectures and simulation-based learning using high and low-fidelity mannequins and actors. It was tested in two phases: the first one in Belo Horizonte and the second one in Montes Claros, both in the state of Minas Gerais. A test was applied before and after training to assess knowledge acquisition. Confidence to perform thrombolysis in ST-elevation myocardial infarction (STEMI) patients was assessed using a questionnaire, and the impact on medication prescription analyzed STEMI patients admitted to hospitals in Montes Claros. Results: In the first phase, 156 professionals answered both tests: 70% of them improved their results and the median number of right answers increased (6, interquartile range [IQR] 5-7; vs 7 ([IQR] 6-9; p < 0.05). In the second phase, 242 professionals answered both tests: 58% of the physicians and 83% of the nurses obtained better test scores. Participants referred a positive impact on their clinical practice, 95% reported feeling very secure when perform fibrinolysis after the training, and there was also an impact on medication prescription. Conclusions: There was an impact on the learners' knowledge acquisition and confidence using our two-phase training model, with evidence of impact on performance


Assuntos
Humanos , Masculino , Feminino , Indicadores de Qualidade em Assistência à Saúde , Serviço Hospitalar de Emergência/tendências , Síndrome Coronariana Aguda/mortalidade , Prescrições de Medicamentos , Heparina/uso terapêutico , Reperfusão Miocárdica/métodos , Análise Estatística , Telemedicina/métodos , Assistência Centrada no Paciente/métodos , Educação Médica Continuada/métodos , Eletrocardiografia/métodos , Serviços Médicos de Emergência , Infarto do Miocárdio
16.
Nat Rev Dis Primers ; 5(1): 39, 2019 06 06.
Artigo em Inglês | MEDLINE | ID: mdl-31171787

RESUMO

ST-segment elevation myocardial infarction (STEMI) is the most acute manifestation of coronary artery disease and is associated with great morbidity and mortality. A complete thrombotic occlusion developing from an atherosclerotic plaque in an epicardial coronary vessel is the cause of STEMI in the majority of cases. Early diagnosis and immediate reperfusion are the most effective ways to limit myocardial ischaemia and infarct size and thereby reduce the risk of post-STEMI complications and heart failure. Primary percutaneous coronary intervention (PCI) has become the preferred reperfusion strategy in patients with STEMI; if PCI cannot be performed within 120 minutes of STEMI diagnosis, fibrinolysis therapy should be administered to dissolve the occluding thrombus. The initiation of networks to provide around-the-clock cardiac catheterization availability and the generation of standard operating procedures within hospital systems have helped to reduce the time to reperfusion therapy. Together with new advances in antithrombotic therapy and preventive measures, these developments have resulted in a decrease in mortality from STEMI. However, a substantial amount of patients still experience recurrent cardiovascular events after STEMI. New insights have been gained regarding the pathophysiology of STEMI and feed into the development of new treatment strategies.


Assuntos
Infarto do Miocárdio com Supradesnível do Segmento ST/diagnóstico , Infarto do Miocárdio com Supradesnível do Segmento ST/terapia , Biomarcadores/análise , Biomarcadores/sangue , Doença da Artéria Coronariana/complicações , Doença da Artéria Coronariana/fisiopatologia , Ecocardiografia/métodos , Eletrocardiografia/métodos , Humanos , Programas de Rastreamento/métodos , Intervenção Coronária Percutânea/métodos , Fatores de Risco , Infarto do Miocárdio com Supradesnível do Segmento ST/fisiopatologia , Resultado do Tratamento , Troponina I/análise , Troponina I/sangue
17.
Int. j. cardiovasc. sci. (Impr.) ; 32(3): 227-237, may.-june. 2019. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1005940

RESUMO

Background: The knowledge on the management of patients with acute coronary syndrome (ACS) is essential to reduce the gap between evidence and practice. Objective: To describe a simulation training strategy for emergency healthcare professionals and provide preliminary data on knowledge acquisition, learners' confidence and prescription of medications after training. Methods: The training was part of the implementation of two myocardial infarction systems of care. It comprehended lectures and simulation-based learning using high and low-fidelity mannequins and actors. It was tested in two phases: the first one in Belo Horizonte and the second one in Montes Claros, both in the state of Minas Gerais. A test was applied before and after training to assess knowledge acquisition. Confidence to perform thrombolysis in ST-elevation myocardial infarction (STEMI) patients was assessed using a questionnaire, and the impact on medication prescription analyzed STEMI patients admitted to hospitals in Montes Claros. Results: In the first phase, 156 professionals answered both tests: 70% of them improved their results and the median number of right answers increased (6, interquartile range [IQR] 5-7; vs 7 ([IQR] 6-9; p < 0.05). In the second phase, 242 professionals answered both tests: 58% of the physicians and 83% of the nurses obtained better test scores. Participants referred a positive impact on their clinical practice, 95% reported feeling very secure when perform fibrinolysis after the training, and there was also an impact on medication prescription. Conclusions: There was an impact on the learners' knowledge acquisition and confidence using our two-phase training model , with evidence of impact on performance


Assuntos
Humanos , Masculino , Feminino , Indicadores de Qualidade em Assistência à Saúde , Serviço Hospitalar de Emergência/tendências , Síndrome Coronariana Aguda/mortalidade , Prescrições de Medicamentos , Heparina/uso terapêutico , Reperfusão Miocárdica/métodos , Análise Estatística , Telemedicina/métodos , Assistência Centrada no Paciente/métodos , Educação Médica Continuada/métodos , Eletrocardiografia/métodos , Serviços Médicos de Emergência/métodos , Infarto do Miocárdio
18.
Int. j. cardiovasc. sci. (Impr.) ; 32(3): 293-296, may.-june. 2019. ilus
Artigo em Inglês | LILACS | ID: biblio-1006179

RESUMO

Ventricular non-compaction occurs due to failure in myocardial morphogenesis during the fetal period. Patients can have heart failure, as well as systemic complications due to thromboembolism and cardiac arrhythmias. Early diagnosis is essential. We present the case of an asymptomatic 49-year-old woman who initially manifested ventricular extrasystoles and heart failure with reduced ejection fraction and a myocardial noncompaction diagnosis


Assuntos
Humanos , Feminino , Pessoa de Meia-Idade , Complexos Cardíacos Prematuros/diagnóstico , Miocárdio Ventricular não Compactado Isolado , Arritmias Cardíacas , Diagnóstico por Imagem , Ecocardiografia/métodos , Espectroscopia de Ressonância Magnética/métodos , Taquicardia Ventricular , Eletrocardiografia/métodos , Ventrículos do Coração/diagnóstico por imagem , Cardiomiopatias
19.
Ter Arkh ; 91(4): 83-89, 2019 May 16.
Artigo em Inglês | MEDLINE | ID: mdl-31094481

RESUMO

AIM: To evaluate standard 12-lead ECG indices for the differential diagnosis of wide QRS tachycardias with right bundle branch block (RBBB) pattern. MATERIALS AND METHODS: Study analyses the 244 ECG indices in 111 patients (79 males and 32 females, age 53±17 years) with RBBB tachycardias, who underwent electrophysiological studies. First step includes retrospective analysis of QRS characteristics in 20 patients with ventricular tachycardias (VT), 24 pts with aberrant supraventricular tachycardias (SVT+RBBB) and 14 pts with antidromic SVTs (WPW). ROC- and multifactorial analyses were performed to develop diagnostic ECG algorithms. The prognostic accuracy of the algorithms was subsequently evaluated on a prospective group of patients with RBBB tachycardias (n=53). RESULTS: ECG criteria of RBBB VTs were: 1) the presence Q-wave in lead II, 2) the duration interval R(peak)-S(end) >100 ms in lead V5. ECG criteria for antidromic SVTs with RBBB were: 1) the duration of the R wave in lead I ≥80 ms, 2) the absence of split (M-sharp) R-waves in lead V2, 3) the absence notch in ascending S wave in lead aVL. The accuracy of the algorhythm for diagnostic of VTs with RBBB was 83% (sensitivity 100%, specificity 73%). The accuracy of the algorhythm for diagnostic of antidromic SVTs with RBBB was 91% (sensitivity 85%, specificity 96%). CONCLUSION: The proposed algorithms are based on new ECG criteria for the differential diagnosis of wide QRS complexes tachycardias with RBBB pattern, unlike the previous algorithms.


Assuntos
Bloqueio de Ramo/diagnóstico , Eletrocardiografia/métodos , Taquicardia/diagnóstico , Adulto , Idoso , Bloqueio de Ramo/fisiopatologia , Diagnóstico Diferencial , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Estudos Retrospectivos , Taquicardia/fisiopatologia
20.
Int Heart J ; 60(3): 761-767, 2019 May 30.
Artigo em Inglês | MEDLINE | ID: mdl-31105149

RESUMO

A 70-year-old woman was admitted for treatment of supraventricular tachycardia. Ventriculoatrial conduction was revealed through programmed ventricular stimulation; the coronary sinus ostium (CSos) was the earliest atrial activation site. The fast-slow forms of atrioventricular nodal reentrant tachycardia (AVNRT) were induced by ventricular extra-stimuli. During tachycardia, the earliest atrial activation site was located at the bottom of CSos. Radiofrequency (RF) energy application to this site resulted in the delay of local electrical potential, prolongation of tachycardia cycle length, and a shift of the earliest retrograde activation site to the roof of CSos. Subsequent ablation induced a similar shift to the inferior tricuspid annulus and to the right posterior septum. Finally, RF energy application to the right posterior septum resulted in the termination of tachycardia, which was not induced afterward. Multiple shifts in the earliest retrograde atrial activation site along the tricuspid annulus after each slow pathway ablation suggested that annular tissue plays a substantial role as a substrate for AVNRT.


Assuntos
Nó Atrioventricular/fisiopatologia , Ablação por Cateter/métodos , Taquicardia por Reentrada no Nó Atrioventricular/diagnóstico , Taquicardia por Reentrada no Nó Atrioventricular/terapia , Idoso , Eletrofisiologia Cardíaca/instrumentação , Eletrocardiografia/métodos , Feminino , Humanos , Taquicardia por Reentrada no Nó Atrioventricular/fisiopatologia , Taquicardia Supraventricular/diagnóstico , Taquicardia Supraventricular/fisiopatologia , Taquicardia Supraventricular/terapia , Resultado do Tratamento
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