MEDICINE HURST VENTRICULAR ELECTROCARDIOGRAPHY - Part 7 pps

... left ventricle. 177 Figure 9.1 Left ventricular hypertrophy due to systolic pressure overload of the left ventricle. This electrocardiogram was recorded from a 42-year-old woman with severe ... deflections are absent in left ventricular conduction delay. Left ventricular hypertrophy may, however, be associated with left ventricular conduction delay. • In left anterior-superi...

Ngày tải lên: 14/08/2014, 07:20

... 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°. Figure 4. 17 A. Bayley's ... of the interventricular septum. The left bundle divides to form two branches, although Tawara called it tripartite. The major divisions are the anterior-superior and the posterior-...

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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 ... vector is -7 0°-to the left and 10° to 15° posteriorly. There are no Q waves in leads I and V6, and there is no R wave in lead V1. The mean terminal 0.04-second QRS vector is directed -1 10°...

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... Final Any Final Any Final Any Final Any 1 77 M 0 0 + + 0 0 2 72 M + + + 0 + 3 68M + 0 + + + 4 67M + 0 0 0 + 0 + 5 67M 0 0 0 0 0 + 0 0 6 67M + + + 0 0 7 65M 0 0 0 0 0 0 0 0 8 65M + + 0 0 0 0 ... recognition. JAMA 104( 17) : 1 473 , 1935. 3. Stein PD, Dalen JE, McIntyre KM, et al: The electrocardiogram in acute pulmonary embolism. Prog Cardiovasc Dis 27( 4):2 47, 1 975 . 4. Hurs...

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... isolated guinea-pig auricles. J Physiol Lond 1 970 ;209:25. 10. Vaughan-Jones RD: Intracellular chloride activity of quiescent cardiac Purkinje fibres. J Physiol Lond 1 977 ; 272 :32. 11. Schlant ... ( 173 7- 1 79 8) can be acclaimed as the scientist who proved that electrical stimulation of the crural nerves of a frog would make the frog's leg muscles contract. In his own account...

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... Electrocardiography. New York: McGraw- Hill, 19 57, 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 ... Cardiol 19 87; 10 :77 5. PART 2 Mechanisms Responsible for the Normal and Abnormal Electrocardiogram...

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... 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 ... evidence of 87 Figure 5.19 The electrocardiogram of a normal, heavy-set, broad-chested 31-year-old male with a horizontal mean QRS vector. Note the relationship of the mean...

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... correlation. Arch Intern Med 1988; 148 (7) : 1545. 16. Grant RP: Clinical Electrocardiography: The Spatial Vector Approach. New York: McGraw-Hill, 19 57, p. 49. 17. Romhilt DW, Bove KE, Norris RJ, ... diagnosis of left ventricular hypertrophy. Circulation 1969; 40:185. 18. Romhilt DW, Estes EH: Point-score system for the ECG diagnosis of left ventricular hypertrophy. Am Heart J 1...

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... and atria may also be damaged. 224 Figure 11. 17 This electrocardiogram, showing a non-Q wave infarction, was recorded from a 50-year-old woman. The patient had angina pectoris at rest, ... posteriorly. The total 12-lead QRS amplitude is greater than 124mm, and the QRS amplitude in lead V 5 is greater than 25mm. The mean initial 0.04-second QRS vector is directed -7 0° to the left...

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... 13.6 and 13 .7. Figure 13.5 This electrocardiogram, showing a large ST segment vector, was recorded from a normal 2 7- year-old athlete. An electrophysiologic study was normal. (A-D) Frontal ... 0.01-second QRS vector. Note that it is posterior to the 0.02-second vector. D. The spatial orientation of the mean initial 0.02-second QRS vector; note that it is anterior to the 0.01-second...

Ngày tải lên: 14/08/2014, 07:20