Results 281 to 290 of about 65,578 (312)
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The American Journal of Cardiology, 2018
In a man with a wide-QRS complex tachycardia, a history of an inferior left ventricular scar, atrioventricular dissociation during the tachycardia, and a QRS morphology inconsistent with right or left bundle branch block exclude a diagnosis of supraventricular tachycardia with aberrant ventricular conduction due to bundle branch block or ventricular ...
Elias B. Hanna +2 more
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In a man with a wide-QRS complex tachycardia, a history of an inferior left ventricular scar, atrioventricular dissociation during the tachycardia, and a QRS morphology inconsistent with right or left bundle branch block exclude a diagnosis of supraventricular tachycardia with aberrant ventricular conduction due to bundle branch block or ventricular ...
Elias B. Hanna +2 more
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Narrow QRS Complex Tachycardias
AACN Advanced Critical Care, 2007Narrow QRS complex tachycardias are either atrioventricular (AV) nodal passive or AV nodal active. AV nodal passive tachycardias do not require the participation of the AV node in maintenance of the tachycardia. Examples are atrial tachycardia, atrial flutter, and atrial fibrillation.
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Estimation of QRS Complex Power Spectra for Design of a QRS Filter
IEEE Transactions on Biomedical Engineering, 1984We present power spectral analysis of ECG waveforms as well as isolated QRS complexes and episodes of noise and artifact. The power spectral analysis shows that the QRS complex could be separated from other interfering signals. A bandpass filter that maximizes the signal (QRS complex)-to-noise (T-waves, 60 Hz, EMG, etc.) ratio would be of use in many ...
Nitish V. Thakor +2 more
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Hospital Practice, 1984
A 65-year-old man is seen in the emergency room for an episode of tachycardia that began 30 minutes ago. He had a myocardial infarction three years ago. Since then, he has had recurrent bouts of tachycardia diagnosed as ventricular tachycardia Treatment with quinidine, procainamide, disopyramide, and several beta-adrenergic blocking drugs was ...
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A 65-year-old man is seen in the emergency room for an episode of tachycardia that began 30 minutes ago. He had a myocardial infarction three years ago. Since then, he has had recurrent bouts of tachycardia diagnosed as ventricular tachycardia Treatment with quinidine, procainamide, disopyramide, and several beta-adrenergic blocking drugs was ...
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The Imposter Dance of Alternating QRS Complexes
JAMA Internal Medicine, 2022This case report describes a patient in their late 50s with acute onset chest pain with diaphoresis.
An-Li, Yu +2 more
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Abnormalities of the QRS Complex
1990Abnormalities of the QRS axis and the QRS interval have been discussed in earlier chapters and will be noted in this chapter only as they relate to other problems. As a general rule, the QRS complex reflects primarily left ventricular activity and to a much lesser extent right ventricular activity, since the mass of the left ventricle is so much ...
E. Wayne GroganJr., John W. Beasley
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Influence of hemorrhage on the QRS complex of the electrocardiogram
American Heart Journal, 1971Abstract The removal of blood from anesthetized cats or dogs invariably produces an immediate reduction of the amplitude of the QRS complex, which can be restored to normal by reinjecting the blood. In the present study it was demonstrated that the QRS changes are directly related to the changes of the heart volume, viz., reduction of QRS amplitude ...
Simon Gitter +4 more
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Huisarts en wetenschap, 2019
1. Beschrijf het ecg systematisch volgens ECG-10+.1, 2 2. Hoe luidt uw diagnose en welk beleid stelt u voor?
Robert Willemsen, Karen D. Könings
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1. Beschrijf het ecg systematisch volgens ECG-10+.1, 2 2. Hoe luidt uw diagnose en welk beleid stelt u voor?
Robert Willemsen, Karen D. Könings
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1979
The principal deflection of the electrocardiogram is the QRS complex (Figure 3.1), and alterations in the QRS waves provide information of great clinical value.
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The principal deflection of the electrocardiogram is the QRS complex (Figure 3.1), and alterations in the QRS waves provide information of great clinical value.
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Annals of Internal Medicine, 1989
Excerpt To the Editor:The article on wide QRS-complex tachycardia by Akhtar and colleagues (1) is a welcome treatise on the electrocardiographic diagnosis of this complex and often enigmatic arrhyt...
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Excerpt To the Editor:The article on wide QRS-complex tachycardia by Akhtar and colleagues (1) is a welcome treatise on the electrocardiographic diagnosis of this complex and often enigmatic arrhyt...
openaire +3 more sources