Electrocardiographic PR Lengthening and QRS Widening
نویسندگان
چکیده
منابع مشابه
Electrocardiographic Manifestations of Benzodiazepine Toxicity
Background: The aim of this study was to evaluate and compare the clinical and electrocardiographic (ECG) manifestations of benzodiazepines (BZs). Methods: In this retrospective study, all BZ-poisoned patients hospitalized at Loghman Hakim Hospital between September 2010 and March 2011 were evaluated. Patients’ information including age, sex, time elapsed between the ingestion and presenta...
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Serial changes in voltage, QRS vectors, and QRS-T angles were studied in 44 patients who had shown improvement in their electrocardiograms during treatment for hypertension. Changes were observed in a number of electrocardiographic voltage criteria often used in the study of left ventricular hypertrophy. This is consistent with a change in the magnitude of the mean QRS vector and its reflection...
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OBJECTIVE The principal mechanism of cardiac toxicity of bupivacaine relates to the blockade of myocardial sodium channels, which leads to an increase in the QRS duration. Recently, experimental studies suggest that lipid emulsion is effective in reversing bupivacaine cardiac toxicity. We aimed to evaluate the temporal evolution of the QRS widening induced by bupivacaine with the administration...
متن کاملWidening of the QRS complex during atrial pacing: what is the mechanism?
An electrophysiologic procedure was performed in a 50-year-old man with a 20-year history of paroxysmal tachycardia. During sinus rhythm, the atrial-His (AH) interval was 70 msec, the His-ventricular (HV) interval was 45 msec, and the QRS width was 80 msec. During atrial pacing at a cycle length of 290 msec, there was widening of the QRS complex (Fig. 1). The transition from a narrow to wide QR...
متن کاملelectrocardiographic manifestations of benzodiazepine toxicity
background: the aim of this study was to evaluate and compare the clinical and electrocardiographic (ecg) manifestations of benzodiazepines (bzs). methods: in this retrospective study, all bz-poisoned patients hospitalized at loghman hakim hospital between september 2010 and march 2011 were evaluated. patients’ information including age, sex, time elapsed between the ingestion and presentat...
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ژورنال
عنوان ژورنال: Circulation Journal
سال: 2013
ISSN: 1346-9843,1347-4820
DOI: 10.1253/circj.cj-12-1308