MEDICINE HURST VENTRICULAR ELECTROCARDIOGRAPHY - Part 4 ppt

... frontal plane projections of the normal 0.0 1-, 0.0 2-, 0.0 4- , 0.0 6-, and 0.08-second QRS vectors are shown in Figure 5.9. Normally, the initial 0.0 1- to 0.02-second QRS vectors are anterior to the ... serviced by the A-S and P-I divisions of the left ventricular conduction system. Left anterior-superior division block [ 24] occurs when conduction is blocked in the anteri...

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... England. Philos Trans R Soc Lond (Biol) 177 3- 75, 64: 4 64. 4. Hunter J: Anatomical observations on the torpedo. Philos Trans R Soc Lond(Biol) 1773,63 :48 1. 5. Cavendish H: An account of some attempts ... d'Aquino, 17 94. 9. DuBois-Reymond E: Untersuchungen über Thierische Elektricitat. Berlin, Reimer, 1 84 8-6 0, Vols 1 and 2. 10. Kolliker A, Muller H: Zweiter Bericht über...

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... Figures 4. 5, 4. 6, and 4. 7. The reader should recall that the heart is located more vertically in tall, thin individuals and more horizontally in broad-chested, obese individuals. 31 Figure 4. 3 ... and the upper part of the diagram was designated as -9 0° (Fig. 4. 17B). The electrical force represented as a vector as shown in Figure 4. 17B, is directed at +90°. Fi...

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... Electrocardiography. New York: McGraw- Hill, 1957, p. 49 .) The initial and terminal mean instantaneous QRS vectors. The frontal plane directions of the 0.0 1-, 0.0 2-, 0.0 4- , 0.0 6-, and 0.08-second ... complex, the initial 0. 0 4- second portion of the QRS complex, the terminal 0. 0 4- second portion of the QRS complex, the ST segment deflection, and the T wave. Figure...

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... passossistica. Clin Pediatr 1963; 45 :656. 6. Ward OC: A new familial cardiac syndrome in children. J Irish Med Assoc 19 64; 54: 103. 7. Jervell A, Lange-Nielsen F: Congenital deaf-mutism, functional heart ... correlation. Arch Intern Med 1988; 148 (7): 1 545 . 16. Grant RP: Clinical Electrocardiography: The Spatial Vector Approach. New York: McGraw-Hill, 1957, p. 49 . 17. Romhilt DW...

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... accessory pathway. The Wolff-Parkinson-White syndrome. The Wolff-Parkinson-White syndrome consists of the electrocardiographic abnormalities of ventricular pre-excitation, including a short ... anteriorly. The mean initial 0. 0 4- second QRS vector is directed -7 0° to the left and at least 30° anteriorly. The mean terminal 0.0 4- second QRS vector is directed at-155° superiorly a...

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... directed about 40 ° posteriorly, with a duration amplitude product of about -0 .04mm- sec in lead V 1 . This signifies a left atrial abnormality. QRS complex: The QRS complex is directed about -4 5° to ... from a 43 -year-old man, and is characteristic of hypertrophic subaortic stenosis. The PR interval is 0.17 second. The duration of the QRS complex is 0.08 second; the QT interval i...

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... initial 0.0 4- second QRS, mean terminal 0. 0 4- second QRS, mean ST, and mean T vectors. B. The spatial orientation of the mean QRS vector. C. The spatial orientation of the mean initial 0. 0 4- second ... mean initial 0. 0 4- second QRS vector. The electrode positions for leads V 2 , V 3 , and V 4 are all near the transitional pathway for the mean 0.0 4- (It continues from pag. 2...

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... the frontal plane and 45 ° to 60° posteriorly. The mean initial 0. 0 4- second QRS vector is directed about +50° inferiorly and about 45 ° posteriorly. The mean initial 0.01-second QRS vector is ... QRS, mean 0.01-second QRS, mean 0.02-second QRS, mean0.0 4- second QRS, mean ST, and mean T vectors. B. The spatial orientation of the mean QRS vector. (It continues from pag. 249 ) C. The...

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... recognition. JAMA 1 04( 17): 147 3, 1935. 3. Stein PD, Dalen JE, McIntyre KM, et al: The electrocardiogram in acute pulmonary embolism. Prog Cardiovasc Dis 27 (4) : 247 , 1975. 4. Hurst JW, Woodson ... minute or less). • Premature atrial, junctional, or ventricular depolarizations. • First-degree atrioventricular block, second-degree atrioventricular block, and Mobitz type I block....

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