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1.
J Interv Card Electrophysiol ; 63(2): 425-430, 2022 Mar.
Article in English | MEDLINE | ID: mdl-34236564

ABSTRACT

PURPOSE: Delineate retrospectively and prospectively the incidence and characteristics of transient ST-segment elevation during transseptal puncture. METHODS: The study retrospectively evaluated 307 patients from January 1, 2015, to December 31, 2017, and prospectively evaluated 231 patients from January 1, 2018, to July 31, 2019. RESULTS: The presence of ST-segment elevation was significantly higher in the prospective sample than in the retrospective sample (5.2% vs. 1.3%, p < 0.05). Between the two groups, there was no significant difference in age, sex, comorbidities, left atrial volume index, and the etiology of atrial fibrillation among patients with ST-segment alteration. In all patients, the ST-segment elevation was observed in the inferior wall derivations, except for one patient with ST elevation in lead I, AVL, V1-V4 during the septal puncture, associated with sinus bradycardia and reversed hypotension with intravenous fluids. Comparative analysis of the systolic and diastolic arterial pressure and the minimum heart rate during the phenomenon demonstrated more severity in the retrospectively evaluated population than in the prospective population. There was a significant association between the occurrence of ST-segment elevation > 2 mm and the presence of symptoms. In these patients, coronary angiography showed no alterations. Atropine was administered to one patient who presented with junctional bradycardia after the puncture. This medication reversed the situation. CONCLUSION: ST-segment elevation is a short-term phenomenon that can occur during transseptal catheterization without clinically evident symptoms. The catheter ablation procedure can be safely concluded despite the occurrence of the phenomenon.


Subject(s)
Catheter Ablation , Catheter Ablation/adverse effects , Catheter Ablation/methods , Electrocardiography , Humans , Incidence , Prospective Studies , Punctures , Retrospective Studies
2.
RELAMPA, Rev. Lat.-Am. Marcapasso Arritm ; 31(2)abr.-jun. 2018. ilus, tab, graf
Article in Portuguese | LILACS | ID: biblio-914107

ABSTRACT

Lesões do esôfago são descritas como complicação da ablação por radiofrequência da fibrilação atrial. Os trabalhos que avaliaram a formação das lesões esofágicas em ablações de fibrilação atrial tiveram como padrão de fonte de energia a radiofrequência em modo unipolar, utilizando o cateter irrigado. Atualmente está disponível o cateter circular multipolar (PVAC-GOLD®), que utiliza ciclos de aplicação de energia em fases (Duty-Cycled Phased RF). Este trabalho tem como objetivo avaliar a ocorrência de lesão esofágica em pacientes submetidos a ablação de fibrilação atrial utilizando-se o cateter PVAC-GOLD®. Método: Entre agosto de 2014 e agosto de 2017, foram incluídos pacientes submetidos a ablação de fibrilação atrial sintomática com uso do cateter PVAC-GOLD®. Por meio da realização de endoscopia digestiva alta no pós-operatório, buscou-se determinar a ocorrência de lesão esofágica térmica associada ao procedimento. Resultados: O estudo incluiu um total de 117 pacientes (74% com fibrilação atrial paroxística), com média de idade de 54,8 anos, e predominantemente do sexo masculino. Destes, apenas 2 apresentaram lesões esofágicas térmicas diagnosticadas por meio da endoscopia digestiva alta. Conclusão: A lesão esofágica parece ser um achado incomum em pacientes submetidos a isolamento elétrico das veias pulmonares com o cateter circular multipolar (PVAC-GOLD®)


Esophageal lesions are described as a complication after ablation for atrial fibrillation. The studies evaluating the development of esophageal lesions in ablation due to atrial fibrillation had unipolar mode radiofrequency energy source using an irrigated catheter. A multipolar pulmonary vein ablation catheter (PVAC-GOLD®) is currently available, which uses phase-in cycles of energy (Duty-Cycled Phased RF). This study aims to evaluate the occurrence of esophageal lesions in patients undergoing ablations due to atrial fibrillation using the PVAC-GOLD® catheter. Method: Between August 2014 and August 2017, patients undergoing ablation due to symptomatic atrial fibrillation with the use of the PVAC-GOLD® catheter were included in the study. Upper digestive endoscopy was performed in the postoperative period to determine the presence of thermal esophageal lesions associated to the procedure. Results: A total of 117 patients, with mean age of 54.8 years, predominantly males, were included in the study. Of these patients, only 2 presented thermal esophageal lesions diagnosed by endoscopy. Conclusion: Esophageal lesion seems to be an unusual finding in patients undergoing electrical isolation of the pulmonary veins using the multipolar pulmonary vein ablation catheter (PVAC-GOLD®)


Subject(s)
Humans , Male , Female , Middle Aged , Atrial Fibrillation , Catheter Ablation/methods , Esophageal Fistula/complications , Echocardiography, Transesophageal/methods , Endoscopy, Digestive System/methods , Esophageal Perforation , Esophagus/injuries , Heart Atria/diagnostic imaging , Prospective Studies , Pulmonary Veins , Radio Waves/therapeutic use , Data Interpretation, Statistical
3.
PLoS One ; 11(8): e0158542, 2016.
Article in English | MEDLINE | ID: mdl-27487019

ABSTRACT

Tegus of the genera Tupinambis and Salvator are the largest Neotropical lizards and the most exploited clade of Neotropical reptiles. For three decades more than 34 million tegu skins were in trade, about 1.02 million per year. The genus Tupinambis is distributed in South America east of the Andes, and currently contains four recognized species, three of which are found only in Brazil. However, the type species of the genus, T. teguixin, is known from Bolivia, Brazil, Colombia, Ecuador, French Guyana, Guyana, Peru, Suriname, Trinidad and Tobago, and Venezuela (including the Isla de Margarita). Here we present molecular and morphological evidence that this species is genetically divergent across its range and identify four distinct clades some of which are sympatric. The occurrence of cryptic sympatric species undoubtedly exacerbated the nomenclatural problems of the past. We discuss the species supported by molecular and morphological evidence and increase the number of species in the genus Tupinambis to seven. The four members of the T. teguixin group continue to be confused with Salvator merianae, despite having a distinctly different morphology and reproductive mode. All members of the genus Tupinambis are CITES Appendix II. Yet, they continue to be heavily exploited, under studied, and confused in the minds of the public, conservationists, and scientists.


Subject(s)
DNA/genetics , Lizards/anatomy & histology , Lizards/classification , Animals , Evolution, Molecular , Genetic Speciation , Lizards/genetics , Phylogeny , South America , Sympatry
4.
Pacing Clin Electrophysiol ; 35(8): 1005-11, 2012 Aug.
Article in English | MEDLINE | ID: mdl-22670591

ABSTRACT

BACKGROUND: The head-up tilt test (HUT) is widely used to investigate unexplained syncope; however, in clinical practice, it is long and sometimes not well tolerated. OBJECTIVES: To compare the sensitivity, specificity, accuracy, and patients' tolerance of a conventional and shortened HUT. METHODS: Patients with a history of vasovagal syndrome (VVS) were randomized to a conventional HUT (group I) consisting of 20-minute passive tilt followed by 25 minutes after administration of sublingual isosorbide dinitrate (ISDN), or a shortened HUT (group II) where ISDN was given immediately after tilt and observed for 25 minutes. The control group consisted of age- and gender-matched subjects without VVS symptoms. A specific questionnaire to evaluate tolerance was applied. RESULTS: Sixty patients (29 ± 10 years, 82% female) were included. In group I, 22/30 patients had a positive HUT compared to 21/30 in group II (73% vs 70%, P = 0.77). There was also no difference in the accuracy between the two protocols (63% vs 73%, P = 0.24). The time to positivity was shorter in group II (13.2 minutes vs 30 minutes, P < 0.001). Within the control group (n = 60), the frequency of false-positives was 47% and 23% for the conventional and shortened HUT, respectively (P = 0.058). After conventional HUT, 65.2% subjects reported that the test was too long compared to 25% subjects after the shortened HUT (P = 0.002). CONCLUSION: In this study, the HUT without passive phase was not inferior to the conventional HUT regarding sensitivity, specificity, and accuracy. Furthermore, the shortened ISDN-potentiated protocol allowed faster diagnosis and was better tolerated.


Subject(s)
Isosorbide Dinitrate , Syncope, Vasovagal/diagnosis , Vasodilator Agents , Adult , Diagnostic Errors , Female , Humans , Isoproterenol , Isosorbide Dinitrate/adverse effects , Male , Nitroglycerin , Patient Satisfaction , Sensitivity and Specificity , Tilt-Table Test/methods , Vasodilator Agents/adverse effects , Young Adult
5.
Circ Arrhythm Electrophysiol ; 4(2): 149-56, 2011 Apr.
Article in English | MEDLINE | ID: mdl-21325208

ABSTRACT

BACKGROUND: Luminal esophageal temperature (LET) monitoring is one strategy to minimize esophageal injury during atrial fibrillation ablation procedures. However, esophageal ulceration and fistulas have been reported despite adequate LET monitoring. The objective of this study was to assess a novel approach to LET monitoring with a deflectable LET probe on the rate of esophageal injury in patients undergoing atrial fibrillation ablation. METHODS AND RESULTS: Forty-five consecutive patients undergoing an atrial fibrillation ablation procedure followed by esophageal endoscopy were included in this prospective observational pilot study. LET monitoring was performed with a 7F deflectable ablation catheter that was positioned as close as possible to the site of left atrial ablation using the deflectable component of the catheter guided by visualization of its position on intracardiac echocardiography. Ablation in the posterior left atrial was limited to 25 W and terminated when the LET increased 2°C from baseline. Endoscopy was performed 1 to 2 days after the procedure. All patients had at least 1 LET elevation >2°C necessitating cessation of ablation. Deflection of the LET probe was needed to accurately measure LET in 5% of patients when ablating near the left pulmonary veins, whereas deflection of the LET probe was necessary in 88% of patients when ablating near the right pulmonary veins. The average maximum increase in LET was 2.5±1.5°C. No patients had esophageal thermal injury on follow-up endoscopy. CONCLUSIONS: A strategy of optimal LET probe placement using a deflectable LET probe and intracardiac echocardiography guidance, combined with cessation of radiofrequency ablation with a 2°C rise in LET, may reduce esophageal thermal injury during left atrial ablation procedures.


Subject(s)
Atrial Fibrillation/surgery , Body Temperature , Burns/prevention & control , Catheter Ablation/adverse effects , Esophageal Fistula/prevention & control , Esophagus/injuries , Monitoring, Intraoperative/methods , Ulcer/prevention & control , Ultrasonography, Interventional , Adult , Aged , Atrial Fibrillation/diagnostic imaging , Burns/diagnosis , Burns/etiology , Catheter Ablation/instrumentation , Catheters , Chi-Square Distribution , Equipment Design , Esophageal Fistula/diagnosis , Esophageal Fistula/etiology , Esophagoscopy , Esophagus/diagnostic imaging , Esophagus/physiopathology , Female , Humans , Male , Middle Aged , Monitoring, Intraoperative/instrumentation , Ontario , Pilot Projects , Predictive Value of Tests , Prospective Studies , Ulcer/diagnosis , Ulcer/etiology , Ultrasonography, Interventional/instrumentation
6.
Rev Assoc Med Bras (1992) ; 56(1): 56-61, 2010.
Article in Portuguese | MEDLINE | ID: mdl-20339788

ABSTRACT

OBJECTIVE: Although oral anticoagulation has proved beneficial for patients with atrial fibrillation (AF) and embolic risk factors, it is still underused. The objective of this study was to evaluate the adequacy of anticoagulation therapy in patients with AF followed in a private clinic specialized in cardiology, in accordance with the American and European societies of cardiology guidelines/2006 and with the Brazilian Guidelines/2003. METHODS: Between November 2005 and August 2006, we evaluated 7,486 electrocardiograms and selected 53 patients with AF and complete chart records. Clinical characteristics, including embolic risk factor, echocardiographic data and medical treatment were reviewed. RESULTS: Among the 53 patients (68+/-16 years; 29 men), 25 (48%) had hypertension, 20 (38%) heart failure and 3 (6%) diabetes. Among the 15 patients with high embolic risk, 13 (86%) were on oral anticoagulation. In accordance with the American and European guidelines: 32 (60%) patients were Class I, 17 (32%) Class IIa, 1 (2%) Class IIb and 3 (6%) Class III. Treatment was adequate in 21 (66%) Class I patients and 13 (76%) Class IIa. In these, anticoagulation therapy was used in 7/19 (37%) patients > 75 years compared to 22/30 (73%) younger. Among the 3 patients within Class III, 1 was incorrectly on OAC. According to Brazilian guidelines, 33 (62%) were on correctly indicated antithrombotic therapy. There was no difference in the appropriate prescription of oral anticoagulants, comparing the international and Brazilian guidelines (55% vs. 55%). CONCLUSION: According to recent guidelines, anticoagulant therapy has been adequately prescribed for the majority of AF patients, although this is still far from ideal, especially in a cardiology clinic. It is even more critical in the group of older patients.


Subject(s)
Anticoagulants/therapeutic use , Atrial Fibrillation/drug therapy , Aged , Female , Guideline Adherence , Humans , Male , Retrospective Studies , Risk Factors , Severity of Illness Index
8.
Article in Portuguese | LILACS | ID: lil-362352

ABSTRACT

A alta prevalência da Fibrilação Atrial (FA) após cirurgia cardíaca, com suas reações adversas para os pacientes, demanda a padronização das terapias profiláticas. Entre os fatores predisponentes da FA pós-operatória encontram-se: idade avançada, doença valvar (estenose mitral) e cirurgia cardíaca prévia. Pericardite e lesão atrial pelo manuseio e canulação são fatores prováveis na sua patogênese. A prescrição de beta-bloqueadores, amiodarona e sotalol tem permitido a diminuição de sua incidência. A estimulação atrial parece ser uma boa opção para a prevenção de FA pós-cirúrgica, porém o tipo e o modo de estimulação ainda precisam de maiores estudos. Neste trabalho, revisamos e discutimos 72 artigos publicados sobre o assunto, objetivando comparar as terapias mais utilizadas, buscando assim um consenso para a profilaxia da FA no pós-operatório das cirurgias cardíacas.


Subject(s)
Humans , Male , Female , Atrial Fibrillation/etiology , Postoperative Care , Amiodarone , Sotalol , Thoracic Surgery
11.
Rev. bras. cir. cardiovasc ; 16(4): 337-349, out.-dez. 2001. ilus, tab, graf
Article in Portuguese | LILACS | ID: lil-304833

ABSTRACT

INTRODUÇÄO: A compartimentaçäo atrial intra-operatória foi realizada em 27 pacientes, utilizando ultra-som (US). Esta forma de energia parece ser mais efetiva na criaçäo de linhas de lesäo nos átrios, mais profundas e mais uniformes, sem causar carbonizaçäo. CASUíSTICA E MÉTODOS: Foram operados, de março de 1999 e junho de 2000, 27 pacientes, com média de idade de 36 anos. Destes, 19 eram mulheres, 23 eram portadores de doença reumática na valva mitral (5 eram casos de reoperaçäo), 2 apresentavam insuficiência mitral por degeneraçäo mixomatosa, 1 era portador de cardiopatia congênita e 1 apresentava fibrilaçäo atrial isolada. RESULTADOS: Os tempos operatórios foram em média de 166,6 minutos para a operaçäo, 69,2 minutos de circulaçäo extracorpórea, 39,7 minutos de parada cardíaca pelo pinçamento da aorta, e 12,5 minutos e 14 minutos para efetuar as linhas de ablaçäo nos átrios direito e esquerdo, respectivamente. Houve reversäo ao ritmo sinusal em 24 pacientes, durante o ato operatório. Em 2 pacientes a reversäo näo foi obtida e 1 paciente apresentou bloqueio atrioventricular transitório, näo havendo uma explicaçäo plausível para os 2 casos de näo reversäo, pois os 2 pacientes foram submetidos a operaçäo para correçäo da valvopatia pela primeira vez e o átrio näo estava muito dilatado. Foram observadas duas recorrências e dois óbitos ocorreram por insuficiência respiratória e choque cardiogênico, no pós-operatório imediato, sem relaçäo com a técnica. A porcentagem de sucesso foi de 81,4 por cento, por ocasiäo da alta hospitalar. Todos os pacientes fizeram uso de verapamil ou amiodarona, para remodelaçäo atrial. CONCLUSÄO: O uso do ultra-som, para criar linhas de ablaçäo no átrio, durante a cirurgia cardíaca, é efetivo, modifica e torna mais fácil o procedimento do labirinto, causa menos dano aos tecidos, diminui o tempo de cirurgia e as possibilidades de complicaçöes pós-operatórias


Subject(s)
Humans , Male , Female , Adolescent , Adult , Middle Aged , Atrial Fibrillation/surgery , Ultrasonic Therapy , Chronic Disease , Intraoperative Period , Treatment Outcome
12.
REBLAMPA Rev. bras. latinoam. marcapasso arritmia ; 13(1): 31-4, jan.-mar. 2000. ilus
Article in Portuguese | LILACS | ID: lil-265367

ABSTRACT

A fibrilaçäo atrial crônica ainda representa um desafio para a Cardiologia. Até o momento, a melhor abordagem para a reversäo e manutençäo do ritmo sinusal tem sido a cirurgia do labirinto, proposta por Cox. No entanto, a feitura de linhas de bloqueios nos átrios, através de incisöes e suturas é demorada, prolongando o tempo de circulaçäo extracorpórea e, consequentemente, aumentando as chances de complicaçöes trans e pós-cirúrgicas. Em nossa proposta, passamos a realizar as linhas modificadas e simplificadas, usando cateter de ablaçäo e rádio-frequência ou bisturi de ultra-som. Até o momento, foram operados 19 pacientes com valvopatias reumáticas e um com cardiopatia congênitas. Em 90 por cento destes houve reversäo imediata ao ritmo sinusal, havendo recidiva tardia em 4 pacientes (22 por cento), durante evoluçäo clínica média de 11 meses


Subject(s)
Humans , Catheter Ablation/trends , Atrial Fibrillation/surgery , General Surgery/trends , Ear, Inner/surgery
13.
Rev. bras. cir. cardiovasc ; 14(4): 290-7, out.-dez. 1999.
Article in Portuguese | LILACS | ID: lil-254842

ABSTRACT

A técnica do labirinto, idealizada por Cox (Maze procedure), tem sido utilizada, prioritariamente, para reversão ao ritmo sinusal, em pacientes com fibrilação atrial crônica (FAC) e doenças cardíacas de indicação cirúrgica. As incisões atriais, para formação do labirinto, são realizadas por dissecção, seguida de sutura, o que eleva o tempo cirúrgico, aumentando a probabilidade de complicações pós-operatórias. Em vista disso, idealizamos a realização destas linhas pela aplicação transcirúrgica de radiofreqüência (RF) ou ultra-som, na parede atrial, o que proporciona uma redução acentuada do tempo cirúrgico. Foram operados, nos anos de 1998 e 1999, 5 pacientes, sendo 3 do sexo feminino, com média de idades de 45,8 anos, portadores de lesão orovalvar mitral e FAC. Durante o ato cirúrgico, os pacientes foram monitorizados com ECG das derivações periféricas. Após a instalação da circulação extracorpórea convencional, sem cardioplegia, foi aberto o átrio direito e aplicado RF, realizando as linhas, de acordo com a técnica do labirinto modificada (Maze procedure). Ao término da aplicação da RF, no átrio direito, observou-se a regularização do R-R da FAC e o aumento das ondas "F", dando a impressão de flutter atípico. Em seguida ao pinçamento da aorta e abertura do átrio esquerdo, procedeu-se ao isolamento da aurícula esquerda e à realização das linhas do átrio esquerdo.Com a liberação da aorta, o coração voltou a contrair-se, espontaneamente, com retorno ao ritmo sinusal, observando-se a contração dos átrios. Após as trocas valvares e redução do átrio esquerdo, o ECG continuava a registrar o ritmo sinusal. Nos 2 últimos pacientes foi utilizado o ultra-som, que nos pareceu, além de facilitar a realização das linhas, produzir lesões mais profundas. Todos evoluíram bem no pós-operatório imediato e tardio, mantendo-se em ritmo sinusal. Com a finalidade de remodelação atrial, usou-se Verapamil na dose de 120 mg/dia. Concluindo, a técnica permitiu, nesses casos, a realização do procedimento do labirinto sem grandes agressões, em curto espaço de tempo e sem complicações no pós-operatório imediato


Subject(s)
Male , Female , Humans , Adult , Middle Aged , Cardiac Surgical Procedures , Catheter Ablation , Atrial Fibrillation/surgery , Ultrasonography , Chronic Disease , Atrial Fibrillation/physiopathology , Mitral Valve/surgery , Postoperative Care , Time Factors
14.
Rev. bras. cir. cardiovasc ; 12(3): 269-73, jul.-set. 1997. ilus, graf
Article in Portuguese | LILACS | ID: lil-209212

ABSTRACT

A miocardiopatia provocada pela doença de Chagas cria, freqüentemente, circuitos elétricos de reentrada, possibilitando o desencadeamento de taquicardia ventricular, geralmente refratária (TVR) às drogas antiarrítmicas. Muitas vezes, este quadro desorganiza eletricamente os ventrículos, provocando a morte do paciente. Nova proposta técnica para tratamento da (TVR) foi empregada em 9 pacientes, portadores da doença de Chagas com esta arritimia, sendo 8 com aneurisma de ponta e 1 da regiäo infero-basal. Na maioria dos casos, o foco da taquicardia encontrava-se fora da borda do aneurisma ou da área de fibrose geralmente na regiäo basal ou póstero-lateral do ventrículo esquerdo. A idade variou entre 34 e 62 anos, com média de 48. Quatro eram do sexo masculino e 5 do feminino. Todos encontravam-se no grau funcional III e IV e a maioria apresentava episódios freqüentes de síncope, provocados pela taquicardia. Em 2 dos pacientes havia relato de AVC prévio e foi encontrado aneurisma de ponta em 8, aneurisma póstero-basal com extensa fibrose em 1 e trombo intracavitário em 6. Durante o ato cirúrgico foram induzidas as taquicardias clínicas em todos os pacientes. Na regiäo em que o toque do instrumental cirúrgico conseguiu interrompê-las, foram realizadas aplicaçöes de radiofreqüência, através de cateteres de ablaçäo, no centro e nas bordas do foco. Logo após, e no sétimo dia de pós-operatório, nenhuma taquicardia pôde ser induzida com os protocolos de estimulaçäo ventricular programada. A evoluçäo de 13+/-7 meses, sem uso de drogas antiarrítmicas, mostra que 8 estäo assintomáticos e em classe funcional I e II. Um paciente, com doença pulmonar obstrutiva crônica, faleceu de insuficiência respiratória no pós-operatório tardio (3 meses), sem ter apresentado taquicardia. Em conclusäo, esta técnica é facilmente reprodutível, podendo ser realizada com simplicidade, sem necessidade de aparelhagem sofisticada de eletrofisiologia, e apresenta alto grau de sucesso na cura da TVR. Em nossa casuística, até o momento, o índice foi de 100 por cento.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Catheter Ablation , Tachycardia, Ventricular/surgery , Chagas Cardiomyopathy/complications
15.
Arq. bras. cardiol ; 63(1): 59-63, jul. 1994. tab, graf
Article in Portuguese | LILACS | ID: lil-155542

ABSTRACT

PURPOSE--To evaluate the effects of sotalol in patients (pts) with idiophatic ventricular arrhythmias (VT) from right ventricular outflow tract. METHODS--Eighteen pts with VT were enrolled (five with monomorphic repetitive ventricular tachycardia - MRVT). Pts were submitted to a double-blind crossover randomized study (placebo vs. 320 mg/po/d/sotalol; four weeks each), after a wash-out control period. Holter recording were recorded in control and placebo and drug periods. Eligible pts have > 50/h isolated ventricular premature beats (VPB) in control, with or without paired VPB or nonsustained VT (NSVT- > 3 beats, > 100bpm). Drug efficacy criteria was: > 75//reduction in isolated VPB and > 90//of paired VPB or NSVT. The effects of the drug on uncorrected QT interval was evaluated and also on circadian rhythm of VT through the hourly pNN50/VPB ratios. Values are given as mean +/- SD. Three recordings were compared by using paired Student's ®t® test. Statistical significance was assumed for p < 0.05. RESULTS--Differences between control and placebo were NS. Drug was effective in 61//of pts, reducing the 3 types of ET (VPB: placebo = 23.508 +/- 34.537; drug: 975 +/- 1357; paired placebo = 443 +/- 587; drug = 9 +/- 20). The drug was evaluated in 4 pts with MRVT, reducing all ectopic events, with efficacy of 60//over VPB and paired and 80//over NSVT (VPB: placebo = 52.639 +/- 42.207; drug: 1631 +/- 2062; paired: placebo = 796 +/- 754; drug: 20 +/- 30; NSVT: placebo = 4287 +/- 6343; drug: 9 +/- 11). Mean QT interval was 0.40 +/- 0.01s in control and 0.50 +/- 0.04s in the drug period, with no correlation between duration and efficacy. Sotalol modified the circardian rhythm of VPB in the non-responders group, mainly during the morning. CONCLUSION--Sotalol was effective in control of VT, mainly the MRVT. Its effect on VPB circadian rhythm may independently contribute to the overall efficacy profile and myocardial protective effect of this drug


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Sotalol/therapeutic use , Tachycardia, Ventricular/drug therapy , Circadian Rhythm/drug effects , Double-Blind Method
18.
Rev. bras. marcapasso arritmia ; 3(1): 30-8, jan.-abr. 1990. tab
Article in Portuguese | LILACS | ID: lil-91115

ABSTRACT

Descritas as características anátomo-clínicas da displasia ventricular direita arritmogênica e discutidos os métodos diagnósticos e terapêuticos, é apresentada a Série de Maastricht constituída de 14 pacientes, com os dados clínicos, diagnósticos e terapêuticos num tempo médio de 4.2 anos de acompanhamento


Subject(s)
Humans , Adult , Middle Aged , Male , Arrhythmias, Cardiac , Heart Defects, Congenital , Heart Ventricles/abnormalities , Heart Defects, Congenital/diagnosis , Heart Defects, Congenital/therapy , Prognosis
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