scholarly journals STUDIES ON HYPERVENTILATION. II. ELECTROCARDIOGRAPHIC CHANGES IN NORMAL MAN DURING VOLUNTARY HYPERVENTILATION 12

1946 ◽  
Vol 25 (6) ◽  
pp. 880-889 ◽  
Author(s):  
B. Chr. Christensen
Keyword(s):  
Voluntary Hyperventilation ◽  
Electrocardiographic Changes ◽  
Normal Man

Right-to-left shunt in normal man determined by the use of tritium and krypton 85

1962 ◽  
Vol 17 (5) ◽  
pp. 778-782 ◽  
Author(s):  
K. Mellemgaard ◽  
N. A. Lassen ◽  
J. Georg
Keyword(s):  
Cardiac Output ◽  
Partition Coefficients ◽  
Normal Subjects ◽  
Back Pressure ◽  
Blue Dye ◽  
Blood Gas ◽  
Quiet Breathing ◽  
Voluntary Hyperventilation ◽  
Arterial Blood ◽  
Normal Man

An aqueous solution of tritium and krypton 85 together with Evans blue dye was injected intravenously in twelve normal subjects during quiet breathing, during apnea, and during voluntary hyperventilation. Arterial blood was sampled within the first 30 sec after the injection to measure the recovery of the two gases. Blood-gas partition coefficients of the two gases at 37 C were determined experimentally and the ratio between them was found to be 3.8 in normal blood. Knowing this ratio it is possible to calculate the fraction of the arterial recovery due to a right-to-left shunt, and that due to alveolar back pressure. The shunt calculated from findings during quiet breathing is 0.26% of the cardiac output. Recoveries during apnea lead to a calculated shunt of identical size, whereas the shunt calculated from the experiments during hyperventilation amounts to only 0.11% of the cardiac output. Submitted on March 8, 1962

Electrocardiographic changes during norepinephrine-induced hypertension in normal man

1955 ◽  
Vol 50 (4) ◽  
pp. 567-576 ◽  
Author(s):  
Albert J. Miller ◽  
Tsung O. Cheng ◽  
Myron E. Freedman
Keyword(s):  
Induced Hypertension ◽  
Electrocardiographic Changes ◽  
Normal Man
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