Intermittent Wide Qrs Complex During Sinus Rhythm
نویسندگان
چکیده
منابع مشابه
Wide 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...
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A 78-year-old man underwent an electrophysiologic procedure because of a 25-year history of recurrent episodes of paroxysmal tachycatdia. A wide QRS complex tachycardia that had a long RP interval wa.s induced by ventricular pacing (Fig. 1). The cycle length of the tachycardia was 540 msec. An atrial extrastitiiulus introduced in the high right atrium during the first half of diastole terminate...
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We evaluated the effects of slow-rate atrial pacing on impulse formation of the sinus node in 13 isolated rabbit right atria using the microelectrode technique. After the spread of activation was mapped to determine true sinoatrial conduction time (SACT) (38 ± 16 msec [± SD]), the atrium was paced for eight beats at constant intervals slightly shorter than spontaneous cycle length in steps of 1...
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Atrial fibrillation, the most common sustained cardiac arrhythmia, has a complex and multifaceted pathophysiology. The presence of a predisposing substrate, frequently encompassing atrial hypertrophy, fibrosis, and significant alterations of the extracellular matrix, is contributing to intra-atrial electric conduction delay as well as shortening and dispersion of atrial refractory periods. Trig...
متن کاملWide complex tachycardia with atrioventricular dissociation and QRS morphology identical to that of sinus rhythm: a manifestation of bundle branch reentry.
OBJECTIVE To determine the features that distinguish bundle branch reentry (BBR) ventricular tachycardia from a supraventricular tachycardia with aberration on the 12 lead electrocardiogram (ECG). PATIENTS Three patients in whom premature beats (2 cases) or sustained tachycardia (2 cases) showed a QRS configuration identical to that observed during sinus rhythm. INTERVENTIONS Programmed ele...
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ژورنال
عنوان ژورنال: Indonesian Journal of Cardiology
سال: 2015
ISSN: 2620-4762,0126-3773
DOI: 10.30701/ijc.v35i3.433