摘要:

Dibucaine hydrochloride in relatively small doses terminated high frequency ventricular tachycardia induced by toxic doses of K-strophanthoside in 9 of 10 dogs. Dibucaine was antidotal to glycoside-induced vagotonia and improved the alertness and apparent general condition of the animals that received it. One death occurred in the 10 strophanthoside tachycardia animals treated with dibucaine, a mortality rate of 10 per cent. Four deaths occurred in seven dogs that received similar doses of strophanthoside but no dibucaine, a mortality rate of 57 per cent.

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID

摘要:

In man, hypocapnia induced by hyperventilation causes a drop in arterial pressure. The calculated peripheral resistance is decreased, indicating a net vasodilatation. The forearm blood flow is markedly increased, and the vascular resistance of the forearm is much reduced. Persons with impaired function of the sympathetic nervous system continue to show these effects. The increase in forearm flow is not prevented by brachial block. These results suggest that hypocapnia acts directly on blood vessels to produce a net over-all vasodilatation and fall in blood pressure, and that this effect is not mediated through the nervous system, as usually supposed.

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID

摘要:

In each of three individuals, carotid sinus pressure produced a shift of the control of the heart beat from the dominant pacemaker to an ectopic, slower or faster, site of impulse formation. In each instance, it was possible to measure the fundamental rates of the two practically simultaneous pacemakers over fairly wide ranges of variation in rate. A direct, linear relationship was found to exist.

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID

摘要:

From the means and standard deviations of the coordinates of the spatial QRS and T vectors in 178 normal middle-aged men, preliminary normal range limits were calculated for the total group, three positional subgroups, and three relative body weight groups. The superiority of spatial vector analysis over analysis of the scalar electrocardiogram made it possible for the first time to investigate meaningful correlations between electrocardiographic variables, such as the relationship between the magnitude of QRS and T vectors. The relationship between fundamental constitutional variables and spatial vectors was also investigated as background necessary for the diagnostic use of spatial vectors.

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID

摘要:

Since 1946, when the Veterans Administration Hospital, Kingsbridge Road, Bronx, New York City, came under the supervision of the Deans Committee of the five medical colleges in New York City, conferences have been held each Wednesday afternoon by the Cardiovascular Service. The conference of July 22, 1953, on "Digitalis Intoxication" was recorded and transcribed for publication in this Journal. Participating in that conference were the following: DR. ARTHUR C. DEGRAFF, Senior Consultant in Medicine, DR. BERNARD STRAUS, Director of the Medical Service, DR. LOUIS A. KAPP, Chief of the Cardiovascular Service, DR. WALTER NEWMAN, Assistant Chief of the Cardiovascular Service, DR. LOUIS F. BISHOP, Attending Consultant, DR. O. ALAN ROSE, Attending Consultant, DR. J. B. SCHWEDEL, Attending Consultant, DR. FREDERICK LANDAU, Attending Consultant, DR. HARRY FEIN, Attending Consultant, DR. ARTHUR F. HEYL, guest physician, and resident physicians on the Cardiovascular Service.

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID

ISSN:0009-7322    

出版商:OVID    

年代:1954

数据来源: OVID