1/126. Potential proarrhythmic effects of implantable cardioverter-defibrillators.Implantable cardioverter-defibrillator (ICD) interventions have the potential to be proarrhythmogenic. New arrhythmias can occur in the setting of clinically appropriate therapies, as well as during a cardiac rhythm for which therapy is not intended. Cardioversion/defibrillation therapies, antitachycardia pacing, and antibradycardia pacing are potential triggers for the development of new arrhythmias. Newer ICDs allow better recognition and interpretation of the arrhythmias that are induced by delivered therapies. Two cases of ICD-induced proarrhythmias are described. Based on the course of these patients and review of previous reports, proarrhythmic effects of ICD interventions along with prevention and management strategies are discussed.- - - - - - - - - - ranking = 1keywords = long (Clic here for more details about this article) |
2/126. ventricular fibrillation due to long qt syndrome probably caused by clindamycin.Prolongation of QT time interval may be provoked by a limited number of drugs, especially macrolide antibiotics. We describe a case of QT time interval prolongation induced by clindamycin with subsequent repeated ventricular fibrillation and resuscitation; there is no previous report in the literature of QT time prolongation caused by lincosamides.- - - - - - - - - - ranking = 7keywords = long (Clic here for more details about this article) |
3/126. ventricular fibrillation related to reversal of the neuromuscular blockade in a patient with long qt syndrome.The long qt syndrome (LQTS) is associated with syncopal attacks or even sudden death at a young age due to ventricular fibrillation. We report a patient with an undiagnosed LQTS who had an episode of cardiac arrest during the final part of general anesthesia, immediately after the drugs for reversal of the neuromuscular blockade were given. We suggest that the administration of glycopyrronium might have been the provoking factor in this patient.- - - - - - - - - - ranking = 5keywords = long (Clic here for more details about this article) |
4/126. nicorandil, a potassium channel opener, abolished torsades de pointes in a patient with complete atrioventricular block.TdP is a serious complication of AV block. We report a case of complete AV block with QT prolongation who had bouts of TdP resistant to lidocaine and isoproterenol. Temporary pacing could not be performed, because insertion of a pacing lead triggered TdP that deteriorated into ventricular fibrillation. nicorandil, a potassium channel opener, shortened the QT interval and abolished TdP. This may suggest that potassium channel opening drugs are clinically effective against TdP associated with bradycardia-dependent QT prolongation.- - - - - - - - - - ranking = 2keywords = long (Clic here for more details about this article) |
5/126. Sudden death and cerebral anoxia in a young woman with congenital ostial stenosis of the left main coronary artery.We report a 36-year-old woman with ventricular fibrillation, subsequent sudden clinical cardiac death, and a prolonged brain anoxia. After a successful resuscitation coronary angiography revealed congenital ostial left main coronary artery (LMCA) stenosis. Surgical anastomosis of the left internal mammary artery (LIMA) to LAD led to a complete recovery. Postoperative electrophysiological examination, mainly programmed ventricular stimulation, failed to excite any rhythm disturbances. Cathet. Cardiovasc. Intervent. 48:67-70, 1999.- - - - - - - - - - ranking = 1keywords = long (Clic here for more details about this article) |
6/126. Development of ventricular fibrillations with different characteristics in the local electrocardiogram: large and small amplitude of activation, and its implication for implantable cardioverter defibrillator treatment.An implantable cardioverter defibrillator (ICD) was implanted in 2 patients with ventricular tachyarrhythmia related to old myocardial infarction, and defibrillation tests were attempted at the time of ICD implantation and at 2 or 4 weeks after the operation. ventricular fibrillation (VF) was induced by T-wave shocks, but the amplitude of the ventricular electrogram was different in each VF. In most of the VFs with large ventricular electrograms, the local activity was appropriately detected. However, many undersensed beats were observed in other VFs that had fine ventricular electrograms and a longer time was needed before delivering the shock. The amplitude of the ventricular electrogram might be small in some cases of VF and this might result in undersensing and/or unsuccessful defibrillation. Close attention must be paid to the amplitude of ventricular activation in each VF to avoid possible difficulty in ICD therapy.- - - - - - - - - - ranking = 1keywords = long (Clic here for more details about this article) |
7/126. Idiopathic prolonged QT interval and QT dispersion: the effects of propofol during implantation of cardioverter-defibrillator.Local anaesthesia combined with conscious sedation is becoming a popular technique for implantation of cardioverter-defibrillator devices. propofol was given to provide loss of consciousness during defibrillation shock administration, for induced ventricular fibrillation testing. propofol was found to decrease QT interval and QT dispersion in two patients with idiopathic prolonged QT interval and QT dispersion. The findings of the procedure are reported.- - - - - - - - - - ranking = 5keywords = long (Clic here for more details about this article) |
8/126. Near fatal electrical storm in a patient equipped with an implantable cardioverter defibrillator for brugada syndrome.A patient with brugada syndrome experienced incessant ventricular fibrillation 7 years after implantation of an ICD. General anesthesia, fast ventricular pacing, bretylium, and atenolol infusion were ineffective; amiodarone infusion was started. After 190 defibrillation shocks over 36 hours, the electrical storm stopped. A multiorgan failure occurred as a complication of the electrical storm and necessitated prolonged reanimation. Thorough cardiac evaluation revealed no structural abnormality and the patient, now on chronic oral amiodarone therapy, remains free of arrhythmia 1 year after the event.- - - - - - - - - - ranking = 1keywords = long (Clic here for more details about this article) |
9/126. Cardiac arrest due to succinylcholine-induced hyperkalemia in a patient with wound botulism.Cardiac arrest due to hyperkalemia is a known complication of succinylcholine administration in patients with neuromuscular disease, extensive burns, and prolonged immobility. We report a case of hyperkalemic cardiac arrest following the administration of succinylcholine in a patient suffering from wound botulism.- - - - - - - - - - ranking = 1keywords = long (Clic here for more details about this article) |
10/126. Successful resuscitation from recurrent ventricular fibrillation secondary to butane inhalation.resuscitation from cardiac arrest caused by volatile substance abuse is rarely successful. Large doses of catecholamines given during resuscitation, in the presence of butane, may cause recurrent ventricular fibrillation. We report a case of prolonged resuscitation in a young man who had inhaled butane. cardiac output was restored 10 min after the administration of intravenous amiodarone. We suggest that antiarrhythmic agents should be used early during resuscitation to prevent recurrent arrhythmias.- - - - - - - - - - ranking = 1keywords = long (Clic here for more details about this article) |
| | Next -> |