From: Chapter 33, Electrocardiography
Copyright © 1990, Butterworth Publishers, a division of Reed Publishing.
NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.
Walker HK, Hall WD, Hurst JW, editors. Clinical Methods: The History, Physical, and Laboratory Examinations. 3rd edition. Boston: Butterworths; 1990.
Clinical Methods: The History, Physical, and Laboratory Examinations. 3rd edition.
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Figure 33.19
Abnormal sequence of activation in explaining QRS patterns. The normal sequence of activation is diagrammed in Figure 33.8.
- Right bundle branch block. Vectors 1, 2, and 3 remain normal. Vector 4 explains the R′. right ventricular depolarization tacked on to the otherwise normal QRS.
- Left bundle branch block.
- Left anterior superior hemifascicular block (left anterior hemiblock).
- Right ventricular hypertrophy.
- Left ventricular hypertrophy.
- Anterior myocardial infarction. The resultant vectors are all directed away from the infarcted area so that the exploring electrode looks through the electrically silent "window" into the lumen, to record negative complexes.
- PubMedLinks to PubMed
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- Review Risk stratification of patients with complex ventricular arrhythmias. Value of ambulatory electrocardiographic recording, programmed electrical stimulation and the signal-averaged electrocardiogram.[Herz. 1988]Review Risk stratification of patients with complex ventricular arrhythmias. Value of ambulatory electrocardiographic recording, programmed electrical stimulation and the signal-averaged electrocardiogram.el-Sherif N, Turitto G, Fontaine JM. Herz. 1988 Jun; 13(3):204-14.
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- Air pollution effects on ventricular repolarization.[Res Rep Health Eff Inst. 2009]Air pollution effects on ventricular repolarization.Lux RL, Pope CA 3rd. Res Rep Health Eff Inst. 2009 May; (141):3-20; discussion 21-8.
- Review Models of the electrical activity of the heart and computer simulation of the electrocardiogram.[Crit Rev Biomed Eng. 1988]Review Models of the electrical activity of the heart and computer simulation of the electrocardiogram.Gulrajani RM. Crit Rev Biomed Eng. 1988; 16(1):1-66.
- Figure 33.19, [Abnormal sequence of activation in...]. - Clinical MethodsFigure 33.19, [Abnormal sequence of activation in...]. - Clinical Methods
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