MEDICINE HURST VENTRICULAR ELECTROCARDIOGRAPHY - Part 5 potx

... Assoc 1964; 54 :103. 7. Jervell A, Lange-Nielsen F: Congenital deaf-mutism, functional heart disease with prolongation of the QT interval, and sudden death. Am Heart J 1 957 ; 54 (1) :59 . 8. Fisch ... of left ventricular hypertrophy. Circulation 1969; 40:1 85. 18. Romhilt DW, Estes EH: Point-score system for the ECG diagnosis of left ventricular hypertrophy. Am Heart J 1968; 75: 7...

Ngày tải lên: 14/08/2014, 07:20

... 14 Electrocardiography by J. Willis Hurst and Grattan Woodson, could not have been written without the basic contribution of Robert Grant. [ 35] Figure 1 .5 Robert Purves Grant (191 5- 1 966). ... Toronto: The Blakiston Company; 1 951 . 35. Hurst JW, Woodson GC: Atlas of Spatial Vector Electrocardiography. New York, Toronto: The Blakiston Company; 1 952 ....

Ngày tải lên: 14/08/2014, 07:20

... 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-inferior divisions. ... the pencil is analogous to an electrical force. (From Hurst JW, Woodson GC Jr: Atlas of Spatial Electrocardiography. New York, Blakiston, 1 952 , p 18. Copyright held by author[JWH]) T...

Ngày tải lên: 14/08/2014, 07:20

... Electrocardiography. New York: McGraw- Hill, 1 957 , 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 ... diagram depicting ventricular depolarization shown in Figure 5. 5 was created by Flowers and Horan, [10] based on the works of Durrer and his colleagues. Figure 5. 5 S...

Ngày tải lên: 14/08/2014, 07:20

... 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 ... left ventricular hypertrophy. Circulation 1969; 40:1 85. 14. Romhilt DW, Estes EH Jr: A point-score system for the ECG diagnosis of left ventricular hypertrophy. Am Heart...

Ngày tải lên: 14/08/2014, 07:20

... accessory pathway. The Wolff-Parkinson-White syndrome. The Wolff-Parkinson-White syndrome consists of the electrocardiographic abnormalities of ventricular pre-excitation, including a short ... mean QRS vector is directed about- 15 to the left and about 50 ° to 60° posteriorly. The mean terminal 0.04-second QRS vector is directed about-30° to the left and 85 posteriorly. ST segment: T...

Ngày tải lên: 14/08/2014, 07:20

... an atrial septal defect. (The left-to-right shunt ratio was 5: 1.) The tracing shows a right ventricular conduction defect that is often associated with right ventricular hypertrophy secondary ... amplitude secondary to left ventricular hypertrophy due to diastolic pressure overload (see Table 5. 2). The normal total 12-lead QRS amplitude can be as much as 185mm (see Fig. 5. 6). Th...

Ngày tải lên: 14/08/2014, 07:20

... presence of the block. From Hurst JW, Woodson GC Jr: Atlas of Spatial Vector Electrocardiography. New York: Blakiston, 1 952 , p. 181. (Copyright held by JW Hurst) Figure 11. 15 This electrocardiogram, ... directed about -3 5 to the left. It is parallel with the frontal plane, whereas normally, it would be directed more posteriorly. The mean initial 0.04-second QRS vector is di...

Ngày tải lên: 14/08/2014, 07:20

... directed about +50 ° inferiorly and about 45 posteriorly. The mean initial 0.01-second QRS vector is directed about +50 ° inferiorly and about 45 posteriorly, but the mean initial 0.02-second vector ... author; see Figure Credits.) From Hurst JW, Woodson GC Jr: Atlas of Spatial Vector Electrocardiography. New York: Blakiston, 1 952 , p. 1 95. (Copyright held by JW Hurst) The Effects o...

Ngày tải lên: 14/08/2014, 07:20

... 67M + + + 0 0 7 65M 0 0 0 0 0 0 0 0 8 65M + + 0 0 0 0 9 62M 0 0 0 0 + + 10 60M 0 + + + + 11 58 M + 0 0 + + 12 56 M + + + + 13 55 M + 0 0 0 0 0 0 14 48M 0 0 0 0 0 + 0 + 15 44M 0 0 0 0 0 0 ... directed about 45 to the left and 60° posteriorly. The mean terminal 0.0 4- second QRS vector is directed about -5 5 to the left and 40° posteriorly. The mean T vector is directed 50...

Ngày tải lên: 14/08/2014, 07:20