Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 69
Filtrar
1.
Europace ; 17(5): 794-800, 2015 May.
Artigo em Inglês | MEDLINE | ID: mdl-25616407

RESUMO

AIMS: To assess the results of transcatheter ablation of cardiac arrhythmias in Latin America and establish the first Latin American transcatheter ablation registry. METHODS AND RESULTS: All ablation procedures performed between 1 January and 31 December 2012 were analysed retrospectively. Data were obtained on the characteristics and resources of participating centres (public or private institution, number of beds, cardiac surgery availability, type of room for the procedures, days per week assigned to electrophysiology procedures, type of fluoroscopy equipment, availability and type of electroanatomical mapping system, intracardiac echo, cryoablation, and number of electrophysiologists) and the results of 17 different ablation substrates: atrio-ventricular node reentrant tachycardia, typical atrial flutter, atypical atrial flutter, left free wall accessory pathway, right free wall accessory pathway, septal accessory pathway, right-sided focal atrial tachycardia, left-sided focal atrial tachycardia, paroxysmal atrial fibrillation, non-paroxysmal atrial fibrillation, atrio-ventricular node, premature ventricular complex, idiopathic ventricular tachycardia, post-myocardial infarction ventricular tachycardia, ventricular tachycardia in chronic chagasic cardiomyopathy, ventricular tachycardia in congenital heart disease, and ventricular tachycardias in other structural heart diseases. Data of 15 099 procedures were received from 120 centres in 13 participating countries (Argentina, Bolivia, Brazil, Chile, Colombia, Cuba, El Salvador, Guatemala, Mexico, Peru, Dominican Republic, Uruguay, and Venezuela). Accessory pathway was the group of arrhythmias most frequently ablated (31%), followed by atrio-ventricular node reentrant tachycardia (29%), typical atrial flutter (14%), and atrial fibrillation (11%). Overall success was 92% with the rate of global complications at 4% and mortality 0.05%. CONCLUSION: Catheter ablation in Latin America can be considered effective and safe.


Assuntos
Arritmias Cardíacas/cirurgia , Ablação por Cateter , Sistema de Registros , Arritmias Cardíacas/diagnóstico , Arritmias Cardíacas/mortalidade , Arritmias Cardíacas/fisiopatologia , Ablação por Cateter/efeitos adversos , Ablação por Cateter/mortalidade , Acessibilidade aos Serviços de Saúde , Disparidades em Assistência à Saúde , Humanos , América Latina/epidemiologia , Estudos Retrospectivos , Medição de Risco , Fatores de Risco , Fatores de Tempo , Resultado do Tratamento
2.
Artigo em Inglês | MEDLINE | ID: mdl-38596605

RESUMO

Objective: Chagas disease poses a public health problem in Latin America, and the electrocardiogram is a crucial tool in the diagnosis and monitoring of this pathology. In this context, the aim of this study was to quantify the change in the ability to detect electrocardiographic patterns among healthcare professionals after completing a virtual course. Materials and Methods: An asynchronous virtual course with seven pre-recorded classes was conducted. Participants answered the same questionnaire at the beginning and end of the training. Based on these responses, pre and post-test results for each participant were compared. Results: The study included 1656 participants from 21 countries; 87.9% were physicians, 5.2% nurses, 4.1% technicians, and 2.8% medical students. Initially, 3.1% answered at least 50% of the pre-test questions correctly, a proportion that increased to 50.4% after the course (p=0.001). Regardless of their baseline characteristics, 82.1% of course attendees improved their answers after completing the course. Conclusions: The implementation of an asynchronous online course on electrocardiography in Chagas disease enhanced the skills of both medical and non-medical personnel to recognize this condition.

3.
Medicina (B Aires) ; 72(2): 128-30, 2012.
Artigo em Espanhol | MEDLINE | ID: mdl-22522854

RESUMO

High mortality rate associated with massive pulmonary embolism requires an aggressive invasive approach including surgical pulmonary embolectomy when thrombolytic therapy has failed or is contraindicated. We describe a case of high-risk massive pulmonary embolism who underwent surgical treatment due to the presence of a mobile intracardiac clot in a patent foramen ovale, and the possible risk of paradoxical arterial embolism.


Assuntos
Forame Oval Patente/complicações , Embolia Pulmonar/etiologia , Ecocardiografia Transesofagiana , Embolectomia , Feminino , Forame Oval Patente/diagnóstico por imagem , Forame Oval Patente/cirurgia , Humanos , Pessoa de Meia-Idade , Artéria Pulmonar/cirurgia , Embolia Pulmonar/diagnóstico por imagem , Tomografia Computadorizada por Raios X
6.
J Interv Card Electrophysiol ; 59(2): 315-320, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-32418181

RESUMO

COVID-19 infection has shown rapid growth worldwide, and different therapies have been proposed for treatment, in particular, the combination of immune response modulating drugs such as chloroquine and hydroxychloroquine (antimalarials) alone or in combination with azithromycin. Although the clinical evidence supporting their use is scarce, the off label use of these drugs has spread very quickly in face of the progression of the epidemic and the high mortality rate in susceptible populations. However, these medications can pathologically prolong the QT interval and lead to malignant ventricular arrhythmias such that organized guidance on QT evaluation and management strategies are important to reduce morbidity associated with the potential large-scale use.


Assuntos
Antimaláricos/efeitos adversos , Infecções por Coronavirus/tratamento farmacológico , Eletrocardiografia , Síndrome do QT Longo/induzido quimicamente , Síndrome do QT Longo/diagnóstico por imagem , Pneumonia Viral/tratamento farmacológico , Guias de Prática Clínica como Assunto , Adulto , Idoso , Antimaláricos/administração & dosagem , Arritmias Cardíacas/induzido quimicamente , Arritmias Cardíacas/epidemiologia , Azitromicina/administração & dosagem , Azitromicina/efeitos adversos , COVID-19 , Cloroquina/administração & dosagem , Cloroquina/efeitos adversos , Infecções por Coronavirus/diagnóstico , Infecções por Coronavirus/epidemiologia , Relação Dose-Resposta a Droga , Feminino , Humanos , Hidroxicloroquina/administração & dosagem , Hidroxicloroquina/efeitos adversos , Incidência , Masculino , Pessoa de Meia-Idade , Pandemias/prevenção & controle , Pandemias/estatística & dados numéricos , Pneumonia Viral/diagnóstico , Pneumonia Viral/epidemiologia , Prognóstico , Medição de Risco , Tratamento Farmacológico da COVID-19
7.
J Clin Invest ; 111(2): 209-16, 2003 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-12531876

RESUMO

Restrictive cardiomyopathy (RCM) is an uncommon heart muscle disorder characterized by impaired filling of the ventricles with reduced volume in the presence of normal or near normal wall thickness and systolic function. The disease may be associated with systemic disease but is most often idiopathic. We recognized a large family in which individuals were affected by either idiopathic RCM or hypertrophic cardiomyopathy (HCM). Linkage analysis to selected sarcomeric contractile protein genes identified cardiac troponin I (TNNI3) as the likely disease gene. Subsequent mutation analysis revealed a novel missense mutation, which cosegregated with the disease in the family (lod score: 4.8). To determine if idiopathic RCM is part of the clinical expression of TNNI3 mutations, genetic investigations of the gene were performed in an additional nine unrelated RCM patients with restrictive filling patterns, bi-atrial dilatation, normal systolic function, and normal wall thickness. TNNI3 mutations were identified in six of these nine RCM patients. Two of the mutations identified in young individuals were de novo mutations. All mutations appeared in conserved and functionally important domains of the gene. This article was published online in advance of the print edition. The date of publication is available from the JCI website, http://www.jci.org.


Assuntos
Cardiomiopatia Restritiva/genética , Mutação , Troponina I/genética , Adolescente , Adulto , Cardiomiopatia Hipertrófica/genética , Criança , Pré-Escolar , Feminino , Ligação Genética , Humanos , Masculino , Pessoa de Meia-Idade
8.
Medwave ; 16(Suppl4): e6816, 2016 Dec 23.
Artigo em Espanhol | MEDLINE | ID: mdl-28055996

RESUMO

Syncope represents one of the most frequent reasons for consultation in the emergency department. A proper identification will allow a precise etiologic approach and the optimization of delivery of health resources.Once knowing the classification of syncope; it is the clinical interrogatory what enables to discriminate which of these patients present with a neurogenic mediated syncope or a cardiac mediated syncope. The use of diagnostic methods such as the tilt test, will clarify what type of neurally mediated syncope predominates in the patient.The electrocardiogram is the cornerstone in the identification of those patients who had a true episode of self-limited or aborted sudden death as the first manifestation of their syncope, a fact which provides prognostic and therapeutic information that will impact the morbidity and mortality.


El Síncope representa uno de los principales motivos de consulta en los servicios de urgencias. Su adecuada identificación permitirá además de la optimización de los recursos en la salud, un diagnóstico acertado de la causa o posibles causas del mismo. Teniendo clara su clasificación, será la historia clínica, basada en un adecuado interrogatorio, la que permitirá establecer cuáles de esos pacientes presentan un síncope neuralmente mediado y cuales un síncope de origen cardiaco. El uso de métodos diagnósticos como el tilt test, dará claridad sobre qué tipo de síncope neuralmente mediado predomina en el paciente. El electrocardiograma, será la herramienta clave en la identificación de los pacientes cuya manifestación clínica inicial de síncope, representa un verdadero episodio de muerte súbita autolimitada o abortada, lo cual tiene implicaciones pronósticas y terapéuticas que impactarán en la morbimortalidad de los pacientes.


Assuntos
Doenças do Sistema Nervoso Autônomo/diagnóstico , Eletrocardiografia/métodos , Síncope/diagnóstico , Sistema Nervoso Autônomo/fisiopatologia , Doenças do Sistema Nervoso Autônomo/fisiopatologia , Humanos , Prognóstico , Síncope/fisiopatologia , Teste da Mesa Inclinada
10.
Rev. colomb. cardiol ; 27(1): 36-40, ene.-feb. 2020. graf
Artigo em Espanhol | LILACS, COLNAL | ID: biblio-1138751

RESUMO

Resumen La onda P en el electrocardiograma representa exclusivamente la despolarización de las aurículas puesto que la repolarización auricular queda oculta en el QRS. Sin embargo, cuando la repolarizacón auricular se hace evidente en el electrocardiograma se convierte en un elemento clave para el diagnóstico de algunas enfermedades. Diferente sucede en la repolarización ventricular; la repolarización auricular adopta el mismo sentido de la despolarización ya que sigue un sentido cráneo-caudal y se da desde el epicardio hacia el endocardio.


Abstract The P wave on the electrocardiogram exclusively represents atrial depolarisation, since atrial repolarisation is hidden in the QRS complex. However, when atrial repolarisation becomes evident in the electrocardiogram, it is a key element for the diagnosis of some diseases. Unlike what happens in ventricular repolarisation, atrial repolarisation adopts the same direction as depolarisation since it follows a craniocaudal course and it goes from the epicardium towards the endocardium.


Assuntos
Eletrocardiografia , Átrios do Coração , Pericárdio , Elementos Químicos , Endocárdio
11.
Rev. colomb. cardiol ; 26(2): 86-92, mar.-abr. 2019. tab
Artigo em Espanhol | LILACS, COLNAL | ID: biblio-1058389

RESUMO

Resumen Introducción: el bostezo se presenta con frecuencia en los pacientes sometidos a prueba de mesa basculante. Estudios previos han demostrado que el bostezo estimula el sistema nervioso simpático con sus consecuentes cambios hemodinámicos, principalmente en la frecuencia cardíaca y la presión arterial. Objetivo: describir los efectos hemodinámicos y sobre el sistema nervioso autónomo del bostezo, así como establecer el bostezo como mecanismo protector de síncope o predictor de respuesta hemodinámica positiva. Métodos: estudio observacional de fuente secundaria, realizado a partir de una base de datos de pacientes que fueron sometidos a prueba de mesa basculante entre agosto de 2010 hasta diciembre de 2015 y presentaron al menos un bostezo durante la prueba. Se realizaron análisis estadísticos y pruebas pareadas para determinar correlaciones. Resultados: se incluyeron 156 pacientes, la mayoría mujeres, edad promedio 40 años. 43 pacientes presentaron síncope, 113 (72,4%) bostezo sin síncope, y de éstos, 50 (44,2%) tuvieron bostezo y prueba de mesa basculante con respuesta positiva. Se observó un aumento en la mayoría de variables hemodinámicas, sin embargo, hubo una disminución significativa de la frecuencia cardíaca. En 67 pacientes se observó bostezo como protector de síncope mientras que en 61 pacientes como predictor de respuesta hemodinámica positiva. Conclusión: el bostezo se asoció con activación del sistema nervioso simpático, con efectos hemodinámicos y sobre el sistema nervioso autónomo. Puede plantearse como un signo predictor de respuesta hemodinámica positiva de tipo mixto o vasodepresora y en otros casos como un mecanismo protector frente a la aparición de síncope.


Abstract Introduction: Yawning is often present in patients subjected to a tilt table test. Previous studies have demonstrated that yawning stimulates the sympathetic nervous system, with its subsequent haemodynamic changes, mainly heart rate and blood pressure. Objective: To describe the haemodynamic effects of yawning on the autonomic nervous system, as well as to establish yawning as a protective mechanism of syncope, or a predictor of a positive haemodynamic response. Methods: A secondary source observational study conducted using a database of patients that were subjected to the tilt table test between August 2010 and December 2015, and yawned at least once during the test. Statistical analyses and paired tests were performed to determine correlations. Results: A total of 156 patients were included, the majority women, and a mean age of 40 years. Syncope was presented in 43 patients. The remaining 113 (72.4%) yawned with no syncope, and of these, 50 (44.2%) had yawned and had a positive response to the tilt-table test. Although there was an increase in the majority of haemodynamic variables, a significant decrease was observed in the heart rate. Yawning was observed as a protector of syncope in 67 patients, whilst it was a predictor of a positive haemodynamic response in 61 patients. Conclusion: Yawning is associated with activation of the sympathetic nervous system, with haemodynamic effects and on the autonomic nervous system. It could be established as a predictive sign of a mixed type or vasodepressor positive haemodynamic response, and in other cases as a protective mechanism against the appearance of a syncope.


Assuntos
Humanos , Masculino , Feminino , Adulto , Cardiologia , Sistema Nervoso Autônomo , Síncope , Pressão Arterial , Frequência Cardíaca
12.
Arch Cardiol Mex ; 83(3): 185-8, 2013.
Artigo em Espanhol | MEDLINE | ID: mdl-23906743

RESUMO

The anatomy in congenital corrected transposition of the great arteries is complex and the conduction system may experience large degrees of variation. Invasive procedures should be done with the use of the highest possible technological sources to warrant success. We describe here, a patient with recurrent atrioventricular node reentry tachycardia where non-fluoroscopic navigation system helped in a complex ablation.


Assuntos
Técnicas de Imagem Cardíaca , Ablação por Cateter , Imageamento Tridimensional , Taquicardia por Reentrada no Nó Atrioventricular/cirurgia , Feminino , Fluoroscopia , Humanos , Pessoa de Meia-Idade , Recidiva , Transposição dos Grandes Vasos/cirurgia
13.
Rev. colomb. cardiol ; 25(1): 67-73, ene.-feb. 2018. tab, graf
Artigo em Espanhol | LILACS, COLNAL | ID: biblio-959947

RESUMO

Resumen Introducción: en la enfermedad de Sandhoff se ha descrito el compromiso del sistema nervioso autónomo en piel y tracto gastrointestinal; sin embargo, las alteraciones autonómicas del sistema cardiovascular, como la disautonomía, no se han documentado en la literatura revisada. De otro lado, el síncope neuralmente mediado de características cardioinhibitorias, refractario al manejo médico, puede ser tratado con marcapasos con sensor de asa cerrada. Materiales y métodos: se describe el caso de una paciente de 42 años en quien se realizó el diagnóstico de enfermedad de Sandhof. Asociado a esta patología, presentó disautonomía con episodios de síncope diarios sin respuesta al tratamiento médico, que ameritaron el implante de un marcapasos con sensor de asa cerrada. Posteriormente se revisa la literatura existente sobre el tema. Conclusiones: hasta la fecha no se había reportado relación entre la enfermedad de Sandhoff y la disautonomía; en el caso de esta paciente el deterioro de la calidad de vida fue significativo. El uso del algoritmo CLS en síncope neuralmente mediado con características cardioinhibitorias, ha mostrado disminuir la cantidad de síncopes en este tipo de pacientes y mejorar la calidad de vida de los mismos.


Abstract Introduction: Although involvement of the autonomic nervous system in the skin and gastrointestinal tract has been described in Sandhoff disease, no reports of autonomic changes of the cardiovascular system, such as dysautonomia, have been documented in the literature reviewed. On the other hand, the neurally mediated cardioinhibitory syncope that is refractory to medical management can be treated with pacemakers with closed loop sensors. Materials and methods: The case is described of a 42 year-old patient who was diagnosed with Sandhoff disease. Associated to this condition, he presented with dysautonomia with daily episodes of syncope, with no response to medical treatment, which warranted the implant of a pacemaker with a closed loop sensor. The existing literature on this topic was subsequently reviewed. Conclusions: Up until now, there have been no reports on the relationship between Sandhoff disease and dysautonomia. In the case of this patient, the deterioration in the quality of life was significant. The use of the closed loop stimulation (CLS) algorithm in neurally mediated cardioinhibitory syncope has been shown to reduce the number of syncopes in this type of patient and improve their quality of life.


Assuntos
Humanos , Feminino , Adulto , Doença de Sandhoff , Síncope , Relógios Biológicos , Sistema Nervoso Autônomo
14.
Rev. mex. cardiol ; 29(1): 41-44, Jan.-Mar. 2018. graf
Artigo em Inglês | LILACS | ID: biblio-1004299

RESUMO

Abstract: Lead dislodgement syndromes (twiddler, ratchet or reel syndromes) are rare causes of cardiac stimulation device malfunction that can occur most commonly early after device implantation. In most cases, lead replacement (due to extensive damage) or reposition (due to displacement) is needed. We present a case of reel syndrome involving the left ventricular lead of a (AU)


Resumen: Los síndromes de desprendimiento de los cables (síndrome de "tweedler", trinquete o carrete) son causas raras de disfunción del dispositivo de estimulación cardiaca, que generalmente ocurren en el periodo temprano después del implante. En la mayoría de los casos, se requiere el reemplazo del cable (debido a daños extensos) o el reposicionamiento (debido al desplazamiento). Presentamos un caso de síndrome del carrete que involucra de manera exclusiva el cable ventricular izquierdo de un dispositivo de resincronización-desfibrilador cardiaco.(AU)


Assuntos
Humanos , Masculino , Idoso , Desfibriladores Implantáveis , Disfunção Ventricular Esquerda , Eletrodos Implantados/provisão & distribuição , Dispositivos de Terapia de Ressincronização Cardíaca/efeitos adversos
15.
Rev. mex. cardiol ; 28(4): 189-199, Oct.-Dec. 2017. tab, graf
Artigo em Inglês | LILACS | ID: biblio-961310

RESUMO

Abstract: The transvenous implantable cardiac defibrillator (T-ICD) is currently considered the standard of care for prevention of sudden cardiac death in patients with structural cardiac disease or channelopathies. However, the use of these devices is associated with a significant increase of short and long-term complications, mostly related to intravascular leads. The subcutaneous implantable cardiac defibrillator (S-ICD) is a novel alternative for high-risk patients susceptible to intravascular lead complications, with a similar efficacy as T-ICD. Multiple ongoing clinical trials involving the S-ICD are expected to provide additional information about safety, use and benefits in the clinical setting.


Resumen: El desfibrilador cardiaco implantable transvenoso (DCI-T) se considera actualmente el tratamiento estándar para la prevención de la muerte súbita cardiaca en pacientes con enfermedad cardiaca estructural o canalopatías. Sin embargo, el uso de estos dispositivos se asocia con un aumento significativo de complicaciones a corto y largo plazo, principalmente relacionadas con derivaciones intravasculares. El desfibrilador cardiaco implantable subcutáneo (DCI-S) es una alternativa novedosa para pacientes de alto riesgo susceptibles a complicaciones intravasculares, con una eficacia similar al DCI-T. Se espera que varios ensayos clínicos en curso que involucran al DCI-S brinden información adicional sobre seguridad, uso y beneficios en el entorno clínico.

16.
Rev. colomb. cardiol ; 24(4): 361-368, jul.-ago. 2017. tab
Artigo em Espanhol | LILACS, COLNAL | ID: biblio-900546

RESUMO

Resumen Introducción: La ablación con catéter de radiofrecuencia es un tratamiento prometedor para la fibrilación auricular. Pese a su seguridad, se ha evidenciado incremento en la frecuencia de complejos ventriculares prematuros y taquicardia ventricular no sostenida, asociados tal vez con influencias autonómicas. Objetivo: Analizar la actividad autonómica mediante parámetros de monitorización Holter en pacientes llevados a esta intervención. Metodología: Análisis retrospectivo de pacientes con complejos ventriculares prematuros frecuentes luego de aislamiento eléctrico de venas pulmonares por fibrilación auricular, seguidos mediante monitorización Holter entre octubre de 2010 y noviembre de 2014, a fin de comparar parámetros de variabilidad de la frecuencia cardiaca. Resultados: 12,4% tuvo un incremento significativo del automatismo ventricular. Los datos demográficos en los grupos comparados no demostraron diferencias estadísticamente significativas. El promedio de complejos ventriculares prematuros durante las 24 horas fue de 5.363 con 237 por hora. En el grupo de estudio, 65% presentó taquicardia ventricular no sostenida. La variabilidad de la frecuencia cardiaca fue menor en los pacientes del grupo control (p = 0,000). La medida por frecuencias espectrales, evidenció una disminución en la frecuencia LF y HF para ambos grupos, con un valor menor para el grupo control (p = 0,000). La relación LF/HF para ambos grupos fue elevada (p = 0,612). Conclusión: La ablación de venas pulmonares en el tratamiento de la fibrilación auricular puede conducir al desarrollo de complejos ventriculares prematuros frecuentes y taquicardia ventricular. El impacto sobre el sistema parasimpático y simpático puede ser un factor que precipite esta condición.


Abstract Introduction: Radiofrequency catheter ablation is a promising treatment for atrial fibrillation. Despite its security, and increase in the frequency of premature ventricular complexes and nonsustained ventricular tachycardia has been evidenced, which could have autonomic influences. Motivation: To analyse autonomic activity using Holter monitoring parametres in patients who underwent this procedure. Methods: Retrospective analysis of patients with frequent premature ventricular complexes following electric isolation of pulmonary veins due to atrial fibrillation, followed up with Holter monitorisation between October 2010 and November 2014 with the goal of comparing heart rate variability parametres. Results: 12.4% had a significant increase of ventricular automacity. Demographic data in compared groups did not reveal statistically significant differences. The average of premature ventricular complexes within 24 hours was of 5,363, with 237 per hour. In the study group, 65% showed non-sustained ventricular tachycardia. Heart rate variability was lower in patients from the control group (p = 0.000). Evaluation of spectral frequency evidenced a decrease in LF and HF for both groups, with a lower value for the control group (p = 0.000). HF/LF relationship for both groups was high (p = 0.612). Conclusion: Ablation of pulmonary veins in the treatment of atrial fibrillation can lead to the development of frequent premature ventricular complexes and ventricular tachycardia. The impact on the parasympathetic and sympathetic system could be a factor that triggers this condition.


Assuntos
Humanos , Masculino , Pessoa de Meia-Idade , Fibrilação Atrial , Sistema Nervoso Autônomo , Taquicardia , Ablação por Cateter
17.
Rev. colomb. cardiol ; 24(2): 133-139, ene.-abr. 2017. tab, graf
Artigo em Espanhol | LILACS, COLNAL | ID: biblio-900508

RESUMO

Resumen Introducción: El aislamiento de las venas pulmonares mediante la crioablación con balón es una técnica innovadora para el manejo de la fibrilación auricular con una alta tasa de efectividad. Su reciente introducción y aprobación por el Instituto Nacional de Vigilancia de Medicamentos y Alimentos de Colombia en nuestro medio aporta una alternativa al aislamiento tradicional punto a punto con la radiofrecuencia. Métodos: A partir de mayo de 2014, todos los pacientes que fueron llevados a aislamiento de las venas pulmonares con la crioablación fueron registrados de manera prospectiva en un formulario previamente diseñado para tal fin. Resultados: Entre mayo de 2014 y agosto de 2015 se realizaron 31 procedimientos de la crioablación con balón en 31 pacientes (23 hombres, 74%) con una edad promedio de 59 ±11,4 años (rango de 34 a 72 años). La indicación más común fue la fibrilación auricular paroxística (23 pacientes, 74%), con 4 casos de la fibrilación auricular persistente (13%) en presencia de un corazón estructuralmente sano. El procedimiento tuvo una duración total de 152,6 ± 46,1 minutos con un tiempo de la fluoroscopia de 51± 16 minutos, observándose una disminución en los tiempos a medida que se progresó en la curva de aprendizaje. Tres de los 31 pacientes (9,7%) presentaron parálisis diafragmática; dos de ellos recuperaron la motilidad durante el mismo procedimiento y el otro paciente recuperó la motilidad al mes. Conclusiones: La crioablación es una técnica rápida y reproducible para el aislamiento de las venas pulmonares en un servicio de electrofisiología de alta complejidad. Con una curva de aprendizaje corta, es una alternativa valiosa al aislamiento eléctrico punto a punto con la radiofrecuencia, en un grupo con experiencia previa en el aislamiento de venas pulmonares por la técnica convencional de radiofrecuencia. La tasa de complicaciones menores fue comparable a lo reportado en la literatura y no se presentaron complicaciones mayores en este grupo inicial.


Abstract Introduction: Pulmonary vein isolation using balloon cryoablation is a innovative technique for managing atrial fibrillation with a high efficacy rate. Its recent introduction and approval by the Colombian National Institute for Medicine and Food Surveillance in our field offers an alternative to the traditional point-by-point radiofrequency isolation. Methods: Starting May 2014, all patients who underwent pulmonary vein isolation with cryoablation were registered prospectively in a form that had been previously designed specifically for this purpose. Results: Between May 2014 and August 2015, 31 balloon cryoablations were performed in 31 patients (23 men, 74%) with an average age of 59 ± 11.4 years (range from 34 to 72 years). The most frequent indication was paroxysmal atrial fibrillation (23 patients, 74%), with 4 cases of persistent atrial fibrillation (13%) in the presence of a structurally normal heart. The procedure lasted a total of 152.6 ± 46.1 minutes with a fluoroscopy time of 51 ± 16 minutes, observing a decrease in the time as the learning curve progressed. Three of the 31 patients (9.7%) developed diaphragmatic paralysis, two of whom recovered motility during the procedure and the other patient recovered motility after one month. Conclusions: Cryoablation is a fast and reproducible technique for pulmonary vein isolation in a high complexity electrophysiology service. With a short learning curve, it is a valuable alternative to point-by-point radiofrequency isolation, in a group with previous experience in pulmonary vein isolation by means of the traditional radiofrequency technique. Minor complications rate was similar to what was reported in literature and no major complications were developed in this initial group.


Assuntos
Humanos , Masculino , Pessoa de Meia-Idade , Arritmias Cardíacas , Veias Pulmonares , Ondas de Rádio , Fibrilação Atrial , Criocirurgia , Catéteres
18.
Rev. colomb. cardiol ; 24(6): 614-620, nov.-dic. 2017. tab, graf
Artigo em Espanhol | LILACS, COLNAL | ID: biblio-900590

RESUMO

Resumen Introducción: El bloqueo interatrial avanzado, sumado a la aparición posterior de arritmias supraventriculares, principalmente fibrilación auricular y aleteo auricular, se conoce como síndrome de Bayés. Sus alteraciones anatómicas y eléctricas, así como sus complicaciones, son de gran impacto en este tipo de pacientes, y hasta la fecha se les había dado poca importancia. En lo que respecta al tratamiento, existen muchos interrogantes sobre la necesidad de anticoagulación en pacientes con bloqueo interatrial en ausencia de fibrilación auricular y flutter auricular. Métodos y materiales: Se presenta la primera revisión no sistemática de la literatura en Colombia y, posteriormente, se exponen tres casos de pacientes que inicialmente tenían bloqueo inter-atrial avanzado y que, a lo largo de los años de seguimiento, desarrollaron fibrilación auricular. Se muestran los electrocardiogramas que documentan el bloqueo inter-atrial, las características demográficas, los antecedentes personales relevantes, las imágenes de ecocardiografía y el manejo actual relacionado de los casos. Conclusiones: Los profesionales de la salud precisan mayor conocimiento sobre este síndrome, para así garantizar un diagnóstico temprano que lleve a un seguimiento adecuado y se logre impactar el pronóstico. Así mismo, es ideal que se fomenten estudios que faciliten la correcta caracterización demográfica de la población en pro de generar nuevas hipótesis con miras hacia el tratamiento óptimo.


Abstract Introduction: Bayés syndrome is characterised by the presence of an advanced inter-atrial block and the subsequent appearance of supraventricular arrhythmias, mainly, atrial fibrillation and atrial flutter. Its anatomical and electrical disturbances, as well as its complications, have a great impact on those who suffer from it, which, up until now have been given little importance. As regards treatment, there is a lot of controversy on the need for anticoagulants in patients with inter-atrial block in absence of atrial fibrillation or flutter. Methods and materials: The first non-systematic review in Colombia is presented, together with three cases of patients who initially had advanced interatrial block and over the years developed atrial fibrillation. The electrocardiograms documenting the advanced interatrial block, and tables showing demographic characteristics, echocardiography and relevant personal history of case management, are discussed. Conclusions: More knowledge about this syndrome is required in order to ensure an early diagnosis, which could lead to an appropriate follow-up, treatment and prevention of complications. Physicians should be encouraged to create and propose new trials regarding this condition, revealing more information about unknown risk factors and different treatment options.


Assuntos
Humanos , Fibrilação Atrial , Transtornos Cerebrovasculares , Eletrocardiografia
19.
Rev. colomb. cardiol ; 24(3): 261-268, mayo-jun. 2017. tab, graf
Artigo em Espanhol | LILACS, COLNAL | ID: biblio-900526

RESUMO

Resumen Introducción: la acumulación de tejido adiposo epicárdico se asocia con obesidad y aumento en la prevalencia, severidad y recurrencia posteriores a la ablación de la fibrilación auricular. Dentro de los mecanismos implicados se considera un estado proinflamatorio que lleva al remodelamiento estructural de la aurícula y a la alteración en las propiedades electrofisiológicas de los miocitos auriculares. Hasta la fecha no se ha estudiado este fenómeno en Colombia. Objetivo: demostrar esta asociación en un grupo de pacientes de nuestra población a quienes se les realizó ablación de venas pulmonares por radiofrecuencia. Materiales y métodos: se revisaron 170 angiotomografías de corazón realizadas previamente a la ablación de venas pulmonares en pacientes con antecedente de fibrilación auricular. Los pacientes con datos incompletos fueron excluidos para el análisis, 94 fueron analizados. Se cuantificó el grosor del tejido adiposo epicárdico y en conjunto con el índice de masa corporal se analizó su relación con los subtipos de fibrilación auricular, así como recaídas luego de la ablación. Resultados: la mayoría de la población se encontró con sobrepeso y obesidad. Tanto los pacientes obesos como aquellos con sobrepeso, tuvieron significativamente grosor mayor de tejido adiposo epicárdico total respecto a los pacientes con índice de masa corporal normal (p = 0,01). El grosor de la grasa epicárdica fue significativamente mayor en fibrilación auricular persistente respecto a la fibrilación auricular paroxística (p = 0,01). En los pacientes que presentaron recaídas no se observó una diferencia significativa pero sí una tendencia a tener mayor tejido adiposo epicárdico total (p = 0,08). El aumento del tamaño auricular se relacionó en forma significativa con el grosor del tejido adiposo epicárdico (p = 0,05). En el análisis de regresión logística multivariable mantuvo esta relación. Conclusiones: el aumento del tejido adiposo epicárdico se relaciona de manera independiente con el sobrepeso y la obesidad, así como con la severidad y el pronóstico de la fibrilación auricular. Deben hacerse estudios prospectivos de cohortes en los que se evalúe y establezcan valores de corte normales para nuestra población, al igual que seguimiento a largo plazo de la evolución posterior a ablación de venas pulmonares y a intervenciones como disminución de peso.


Abstract Introduction: Accumulation of epicardial adipose tissue is associated with obesity and an increase of prevalence, severity and recurrence following ablation of atrial fibrillation. Within the implicated mechanisms, a proinflammatory state is considered when it leads to the structural remodelling of the atrium and to the alteration of the electrophysiological properties of atrial myocytes. So far this phenomenon has not been studied in Colombia. Motivation: To prove the association in a group of patients of our population who underwent radiofrequency ablation of pulmonary veins. Material and methods: 170 coronary CT angiographies were reviewed prior to the pulmonary vein ablation in patients with a history of atrial fibrillation. Patients with incomplete data were excluded from the analysis, 94 were analysed. Epicardial adipose tissue thickness and body mass index were measured, and their relationship with atrial fibrillation subtypes was assessed, as well as relapses following the ablation. Results: Most participants were overweight or obese. Both obese and overweight patients had a significantly thicker total epicardial adipose tissue than those with a normal body mass index (p = 0.01). The thickness of epicardial fat was significantly higher in persistent atrial fibrillation in comparison with paroxysmal atrial fibrillation (p = 0.01). Patients with relapses did not show a significant difference but they did have a higher tendency to greater total epicardial adipose tissue. The increase in atrial size was significantly relates to the thickness of epicardial adipose tissue (p = 0.05). Multivariate logistic regression analysis kept this relationship. Conclusions: The increase in epicardial adipose tissue is independently related to being overweight and obese, as well as to severity and prognosis of atrial fibrillation. Prospective cohort studies must be conducted where normal cut-off values for our population group are assessed and established, and the long-term progress following pulmonary vein ablation and other procedures such as weight loss surgery is followed.


Assuntos
Humanos , Masculino , Pessoa de Meia-Idade , Fibrilação Atrial , Tecido Adiposo , Ablação por Cateter , Mapeamento Epicárdico
SELEÇÃO DE REFERÊNCIAS
Detalhe da pesquisa