Home  About us  Contact
 

QRS Tachycardia (qr + tachycardia)

Distribution by Scientific Domains
Medical Sciences100%

Kinds of QRS Tachycardia

  • wide QR tachycardia
    		•

    Selected Abstracts

    Salbutamol-Induced Narrow QRS Tachycardia: What Is the Mechanism?

    JOURNAL OF CARDIOVASCULAR ELECTROPHYSIOLOGY, Issue 7 2006
    MARIA PIA CALABR̉ M.D.
    No abstract is available for this article. [source]

    Transition from Narrow to Wide QRS Tachycardia: What is the Mechanism?

    PACING AND CLINICAL ELECTROPHYSIOLOGY, Issue 3 2001
    AMIT VORA
    No abstract is available for this article. [source]

    Wide QRS Tachycardia: What Is the Rhythm?

    ANNALS OF NONINVASIVE ELECTROCARDIOLOGY, Issue 4 2006
    Jonathan Rosman M.D.
    We report a case of an elderly man who presented to the emergency room complaining of palpitations. Electrocardiogram revealed wide QRS tachycardia with a narrow beat within the tachycardia. Most commonly, a narrow complex beat during a wide complex tachycardia suggests a capture or fusion beat in the setting of ventricular tachycardia. However, there are situations where supraventricular tachycardia can also manifest this way. In our patient a pacemaker interrogation clarified the diagnosis. [source]

    Idiopathic Left Ventricular Tachycardia Originating from the Mitral Annulus

    JOURNAL OF CARDIOVASCULAR ELECTROPHYSIOLOGY, Issue 10 2005
    KOJI KUMAGAI M.D.
    Background: Radiofrequency catheter ablation (RFCA) can eliminate most idiopathic repetitive monomorphic ventricular tachycardias (RMVTs) originating from the right and left ventricular outflow tracts (RVOT, LVOT). Here, we describe the electrophysiological (EP) findings of a new variant of RMVT originating from the mitral annulus (MAVT). Methods and Results: MAVT was identified in 35 patients out of 72 consecutive left ventricular RMVTs from May 2000 to June 2004. All patients underwent an EP study and RFCA. The sites of origin of the MAVT were grouped into four groups according to the successful ablation sites around the mitral annulus. Group I included the anterior sites (n = 11), group II the anterolateral sites (n = 9), group III the lateral sites (n = 6), and group IV the posterior sites (n = 9). The MAVTs were a wide QRS tachycardia with a delta wave-like beginning of the QRS complex. The transitional zone of the R wave occurred between V1-V2 in all cases. The 12-lead electrocardiogram (ECG) pattern might reflect the site of the origin of MAVTs around the mitral annulus. We proposed an algorithm for predicting the site of the focus and the tactics needed for successful RFCA of the MAVT. Conclusions: We described the EP findings of the new variant of RMVT, MAVT. Most MAVTs could be eliminated by RF applications to the endocardial mitral annulus using our proposed tactics. [source]

    Wide QRS Tachycardia: What Is the Rhythm?

    ANNALS OF NONINVASIVE ELECTROCARDIOLOGY, Issue 4 2006
    Jonathan Rosman M.D.
    We report a case of an elderly man who presented to the emergency room complaining of palpitations. Electrocardiogram revealed wide QRS tachycardia with a narrow beat within the tachycardia. Most commonly, a narrow complex beat during a wide complex tachycardia suggests a capture or fusion beat in the setting of ventricular tachycardia. However, there are situations where supraventricular tachycardia can also manifest this way. In our patient a pacemaker interrogation clarified the diagnosis. [source]

    Evaluation of Patients with Palpitations: Cardiac Event Recorder Versus 48-hour Holter Monitoring

    ANNALS OF NONINVASIVE ELECTROCARDIOLOGY, Issue 4 2000
    Ewa Makowska M.D.
    Objectives: (1) To compare a diagnostic yield of cardiac event recorders with that of 48-hour Holler monitoring, (2) to determine the etiologies of palpitations, and (3) to assess an optimal duration of using an event recorder by a patient. Background: Palpitation is a common symptom which accounts for 16% of total complaints reported by patients in general medical settings. An ambulatory Holter ECG monitoring or an event recorder can be used to establish the cause of palpitations. Methods: (1)The study group consisted of 33 consecutive patients (24 females, 9 males, mean age 50 ± 32 years) with undiagnosed attacks of palpitations, occurring at least once per month. Each patient was randomly allocated to use either an event monitor or 48-hour Holler monitoring. The patient kept the event monitor for 4 weeks. After the first monitor was returned, the patient was given the other device. Results: Holter monitoring determined the etiology of palpitations in 11 (33%) patients, and the event recorder in 21 (64%) patients (P = 0.0138). In the whole study group, the etiology of palpitations was disclosed in 23 (70%) patients. The diagnosis was possible using Holler ECG monitoring in only 2 (9%) patients, whereas the event recorder revealed the underlying mechanism of palpitations in 12 (52%) patients (P = 0.0007). In nine (39%) patients both methods were able to disclose the eliology of palpitations. The findings of 117 recordings obtained using an event recorder during palpitations were atrial fibrillation in 10 (9%), narrow QRS tachycardia in 4 (3%), frequent supraventricular eclopy in 17 (15%), frequent ventricular eclopy in 6 (5%), and episodes of palpitations sinus rhythm were recorded in the remaining 80 (68%). Of patients who experienced episodes of palpitations while using an event recorder, the earliest recording was obtained on the first day of the study, and the latest on the 18 day of using the event recorder. Conclusions: (1) The cardiac event recorders yield more diagnoses than 48-hour Holter monitoring in patients with palpitations occurring at least once per month, (2) in this group of patients the event recorder provided a diagnostic ECG recording during the first 18 days of using the device, and (3) in the majority (57%) of patients a normal sinus rhythm was recorded during episodes of palpitations. A.N.E. 2000;5(4):315,321 [source]