MEDICINE HURST VENTRICULAR ELECTROCARDIOGRAPHY - Part 8 pot

... Chapter 064. The Practice of Genetics in Clinical Medicine (Part 8) Preventive measures and therapeutic interventions are not restricted to metabolic disorders. Identification of familial ... genetic diagnosis of these and other disorders is only beginning to be used in the clinical setting, predictive testing holds the promise of allowing earlier a...

Ngày tải lên: 07/07/2014, 01:20

... Oyhaugen S: The Norwegian polio study 1994: A nationwide survey of prob- lems in long-standing poliomyelitis. Spinal Cord 36: 280 , 19 98. For further reading in Emergency Medicine: A Com- prehensive ... RH: Electroencephalographic monitoring in the emergency department. Emerg Med Clin North Am 12:1 089 , 1994. For further reading in Emergency Medicine: A Com- prehensive...

Ngày tải lên: 09/08/2014, 15:20

... myocyte to produce an active 32-amino-acid 3.5-kDa BNP neurohormone and an inactive 7 6- amino-acid peptide, amino- (N)-terminal proBNP (NT-proBNP). BNP, like ANP, has a 17-amino-acid ring structure produced ... hemodynamic stress (16– 18) . BNP is synthesized as an inactive 134-amino-acid precursor molecule, preproBNP, that is composed of a 26-amino-acid signal peptide and a 1 0 8- am...

Ngày tải lên: 11/08/2014, 00:20

... of 78, respirations at 24, and BP of 1 08/ 86. A 12-lead ECG has been performed and is reproduced in Figure 14.3. 3. On the basis of currently available information, you conclude that throm- bolytic ... from a 32-year-old male who presented with a heroin overdose after being outside all night. His core body temper- ature at admission was 84 .6 degrees Fahrenheit. P waves are of low ampli- tu...

Ngày tải lên: 11/08/2014, 11:22

... 59 .8 57 .8 61.0 62.2 47.2 52.7 70 .8 73.4 25.0 25.6 26.6 11.2 Control group n 9 283 9 784 96 989 081 6254 982 2 % 63.4 57.2 66.9 57.3 66.2 67.6 62.1 55.9 42 .8 37.2 67.6 15.1 Table 61. Extent and depth of burns ... TBSA and depth of deep sec- ond-degree. Case 2. A 24-year-old male sustained flame burns on his four extremities with an area of 25% TBSA, and depth of deep second-...

Ngày tải lên: 11/08/2014, 13:20

... VENTRICULAR ELECTROCARDIOGRAPHY â 19 98 J. Willis Hurst, MD 10 Figures 1. 3A A.Willem Einthoven (18 6 0 -1 927). This Dutch physiologist ... 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 Purve...

Ngày tải lên: 14/08/2014, 07:20

... precordial V leads were born and called V 1 , V 2 , V 3 , V 4 , V 5 , V 6 , and V 3R (Fig. 4 .21 A). The precordial V lead axes are shown in Figures 4 .21 B and 4 .21 C. The magnitude of the deflections from ... occurs a brief moment before Force 2, and Force 2 occurs a brief moment before Force 3. Force 1 is produced by depolarization of the interventricular septum; Force 2 is du...

Ngày tải lên: 14/08/2014, 07:20

... 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 ... direction of the vector is somewhere between 0° and -9 0°, or between +90° and ±180°. This is illustrated in Figure 4 .33 . Note in Figure 4 .33 A that it is impossible to com...

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 ... 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...

Ngày tải lên: 14/08/2014, 07:20

... 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

... accessory pathway. The Wolff-Parkinson-White syndrome. The Wolff-Parkinson-White syndrome consists of the electrocardiographic abnormalities of ventricular pre-excitation, including a short ... infero-posterior myocardial infarction, was recorded from a 60 -year-old patient. The rhythm is normal and the heart rate is 60 complexes per minute. The duration of the PR interval is 0. 16...

Ngày tải lên: 14/08/2014, 07:20

... 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. ã In left anterior-superi...

Ngày tải lên: 14/08/2014, 07:20

... electrocardiograms, showing the development of a right ventricular infarction, were recorded from a 51-year-old man. He had an anterior infarction in August 1 988 . A coronary arteriogram made at that time ... from a 5 8- year-old man with an inferolateral myocardial infarction and stable angina pectoris. He had a history of two previous myocardial infarctions requiring bypass surgery in...

Ngày tải lên: 14/08/2014, 07:20

... shows no definite abnormality. From Hurst JW, Woodson GC Jr: Atlas of Spatial Vector Electrocardiography. New York: Blakiston, 195 2, p. 193 . (Copyright held by JW Hurst) Figure 12.4 This electrocardiogram ... author; see Figure Credits.) From Hurst JW, Woodson GC Jr: Atlas of Spatial Vector Electrocardiography. New York: Blakiston, 195 2, p. 195 . (Copyright held by JW Hurst)...

Ngày tải lên: 14/08/2014, 07:20

... minute or less). ã Premature atrial, junctional, or ventricular depolarizations. ã First-degree atrioventricular block, second-degree atrioventricular block, and Mobitz type I block. ã Increased ... 0.0 4- second QRS vector is directed about -5 5° to the left and 40° posteriorly. The mean T vector is directed 50° inferiorly and about 30° anteriorly. The ventricular gradient is b...

Ngày tải lên: 14/08/2014, 07:20