منابع مشابه
A Narrow QRS Complex Tachycardia:
An 80-year-old man underwent an electrophysiologic procedure because of recurrent episodes of supraventricular tachycardia. Episodes of nonsustained narrow QRS complex tachycardia occurred spontaneously after catheter placement. Examples of the onset and termination of an episode of tachycardia are shown in Figures 1 and 2, respectively. What is the mechanism of the tachycardia? What is the lev...
متن کاملA rare case of narrow QRS complex tachycardia
We present the case of a 63-year-old female patient who, 2 months earlier, had been diagnosed with a severe ischaemic cardiomyopathy (left ventricular ejection fraction of 18 % on cardiac MRI) due to a large semi-recent transmural left anterior descending artery infarction. She was referred to our coronary care unit because her physical condition had been declining rapidly over the previous 2 d...
متن کاملVentricular Tachycardia with Narrow QRS
gram. Tachyeardias originating in the left bundle branch and documented by right, left, and His bundle recordings have been produced in animals given excessive digitalis. We have noted a similar tachycardia in a patient with ischemic heart disease receiving digitalis during hypokalemia. The QRS complexes were 0.10 sec in duration and by contour suggested an ectopic focus located in the posterio...
متن کاملWide QRS Complex Tachycardia
A 71-year-old man with a history of previous myocardial infarction was referred to our hospital for recurrent symptoms of palpitation and syncope. During an episode of palpitations, a 12-lead ECG (Figure 1) was obtained in the emergency room. The ECG shows a wide-QRS complex tachycardia at a rate of 167 bpm. The P waves are positive in lead II (↑) before each QRS complex, and the PR interval is...
متن کاملAn irregular, narrow QRS complex tachycardia with ventriculoatrial block: what is the tachycardia mechanism?
A 57-year-old woman underwent an electrophysiology procedure because of a 19-year history of recurrent palpitations. Typical AV nodal reentrant tachycardia that had a cycle length of 460 msec was induced by ventricular pacing. Slow pathway ablation was attempted using a combined anatomical and electrogramguided approach. After an application of radiofrequency energy associated with junctional e...
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ژورنال
عنوان ژورنال: Journal of Cardiovascular Electrophysiology
سال: 1999
ISSN: 1045-3873,1540-8167
DOI: 10.1111/j.1540-8167.1999.tb00200.x