RESUMO
We present the case of a 57-year-old man with a primary prevention internal cardioverter-defibrillator for severe nonischemic cardiomyopathy. At the time of elective replacement indicator, systolic function had fully recovered, and his generator was not changed. Nearly 5 years post-elective replacement indicator he received appropriate internal cardioverter-defibrillator therapies during a myocardial infarction. (Level of Difficulty: Intermediate.).
Assuntos
Bloqueio de Ramo/patologia , Sistema de Condução Cardíaco/fisiopatologia , Taquicardia Supraventricular/patologia , Bloqueio de Ramo/diagnóstico , Bloqueio de Ramo/terapia , Desfibriladores Implantáveis , Humanos , Masculino , Pessoa de Meia-Idade , Fatores de Risco , Volume Sistólico , Taquicardia Supraventricular/diagnóstico , Taquicardia Supraventricular/terapia , Fatores de Tempo , Função Ventricular EsquerdaRESUMO
T-wave oversensing represents a common cause of inappropriate shocks in patients with implanted cardiac defibrillators. This case report demonstrates a strategy of device programming using V-V pace delay (sequential rather than simultaneous biventricular pacing) to eliminate T-wave oversensing without decreasing sensitivity to detect true tachyarrhythmia.
Assuntos
Desfibriladores Implantáveis/efeitos adversos , Traumatismos por Eletricidade/etiologia , Traumatismos por Eletricidade/prevenção & controle , Eletrocardiografia/efeitos adversos , Falha de Equipamento , Idoso , Feminino , Ventrículos do Coração/cirurgia , HumanosRESUMO
BACKGROUND: Removal of infected endovascular leads if often required for cure of systemic infection, but the perceived risk of embolic events in the presence of large (>10 mm) vegetations has been considered a relative contraindication to transvenous removal. Surgical removal of pacemaker leads has been suggested in this situation to avoid occurrence of pulmonary embolization. METHODS: Of 38 patients with infection of implanted pacemaker or cardioverter-defibrillator devices, those with evidence for systemic infection underwent transesophageal echocardiography to assess for the presence of vegetations. RESULTS: Vegetations on endocardial leads or right-sided cardiac structures ranging in size from 10 mm to 38 mm in their largest dimension were detected in 9 patients. All patients underwent successful transvenous removal of endocardial leads. Five of 9 patients (55%) had evidence of pulmonary embolism. However, all 5 patients made a full recovery with antibiotic treatment and anticoagulation. Among patients with endocardial vegetations, there was no difference in hospitalization periods between those with or without pulmonary embolism (14.6 +/- 0.8 days vs 18.0 +/- 4.5 days, P =.7). CONCLUSIONS: Transvenous removal of infected pacemaker leads is an alternative to open-thoracotomy removal of infected leads. Fifty-five percent of patients with vegetations on endocardial leads in our series experienced pulmonary embolism, but neither survival nor length of hospital stay were affected by this complication.