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THE ORTHOSTATIC ELECTROCARDIOGRAM
EARLIER ELECTROCARDIOGRAPHIC INVESTIGATIONS
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15 mm Hg abnormal Akesson amplitude asthenic average height average orthostatic change average value beats per minute beats/min blood pressures C-2 group cardiac cycle Cardiac Rate beats cent Change in Cardiac change was negative clinical control groups coronary correlation coefficients showing depression diff differences diphasic ECG's the average extremes factors greater group C-l hemodynamic hypertension increase in cardiac increased sympathetic tone isoelectric line minute standing period mm Hg NCA group NCA patients neurocirculatory asthenia Nordenfelt normal limits normal upper limit OAA groups observed ortho orthost orthostatic arterial anemia orthostatic cardiac rate orthostatic ECG's orthostatic electrocardiograms orthostatic experiments Orthostatic Hypotension orthostatic increase postural hypotension PQ interval present series pulse pressure QRS complex QT interval resting cardiac rate resting ECG's resting values Savilahti showing the dependence significant Sjostrand slight ST segment static changes studies symptoms t-H t-H T2 and T3 T3 waves Table tachycardia TH TH TH