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Pulsations of the wall of the chest: II. Pulsations associated with tricuspid regurgitation
SELECTED
Laurell, The caused normally
H. :
The First Heart
author by
presents
his
Sound.
arguments
M3RTRACTS
Ztschr.
f. Kreislsufforsch.
in support
the squeezing out of blood within occurs during the isometric contraction
217
of the view the heart phase.
walls
30: that
209,
1938.
the first
during
systole.
sound is This KATZ.
Anthony,
A. J., and Harlandt,
Ztschr.
f. Kreislaufforsch.
30:
W.: 247,
Respiratory
Arrhythmia
in Hypoxemia.
1938.
When a subject with sinus arrhythmia is placed in a compression chamber and the pressure in it decreased, the sinus arrhythmia decreases as the pulse rate accelerates, and it finally disappears at a pressure equivalent to an altitude of 3,000 to 5,000 This was found to be the case in thirteen subjects. meters above sea level. KATZ.
Miiller, 638,
E. A.:
Cardiac
Work
and Heart
Volume.
Arch.
f. ges.
Physiol.
238:
1937.
In the heart-lung preparation the author showed that at constant minute volume output the diastolic volume of the right heart is increased from three to nine times as much as that of the left heart by a similar increase in the peripheral resistancr against which each chamber works. Increasing the minute volume output of the heart at constant peripheral resistance has no effect on systolic heart size. Increasing the mechanical work of the left heart by increase in aortic pressure while keeping the minute volume output constant increases the size of the left heart, twenty times as much as a similar increase in work produces when caused by an increase in minute volume output without a change in arterial pressure. KATZ.
Zaeper, G. : Deutsche
Determination med.
Wchnschr.
of the Circulation 63:
417,
in Health
and in Heart
Disease.
1937.
Trained individuals at a given rate of oxygen consumption show a greater This indicates that in the oxygen unsaturation than untrained individuals. the rate of blood flow, and hence the work of the heart, is less than in the Calculations show that in exercise the work of the heart is 2.4 times as great Training of the cardiac patient, can serve, trained as in trained individuals. fore, to decrease the load on the heart.
venous former latter. in untherrKATZ.
Dressler, Wilhelm : Pulsations of the Wall of the Chest: II. Pulsations ciated With Tricuspid Regurgitation. Arch. Irrt. Med. 66: 437, 1937.
Asso-
A diffuse systolic depression of the anterior wall of the chest is found in instances of aortic regurgitation. This is a result of the increased stroke volume of the left ventricle, unless the aspiratory effect, owing to reduction of the ventricular volume during the systolic efflux, is neutralized by the opposing forces due to the systolic change in shape of the heart. In other instances there is no movement of the thoracic wall adjacent to the liver, while a distinct systolic depression is noted over the preThe diastolic pulsation of the thoracic wall in aortic insufficiency takes cordium. place slowly, as contrasted with the speed noted in the majority of cases of adhesive in which an abrupt propulsion of the pericardial disease or tricuspid regurgitation, thoracie wall is noted during diastole. AUTHOR.
Laurell, The caused normally
H. :
The First Heart
author by
presents
his
Sound.
arguments
M3RTRACTS
Ztschr.
f. Kreislsufforsch.
in support
the squeezing out of blood within occurs during the isometric contraction
217
of the view the heart phase.
walls
30: that
209,
1938.
the first
during
systole.
sound is This KATZ.
Anthony,
A. J., and Harlandt,
Ztschr.
f. Kreislaufforsch.
30:
W.: 247,
Respiratory
Arrhythmia
in Hypoxemia.
1938.
When a subject with sinus arrhythmia is placed in a compression chamber and the pressure in it decreased, the sinus arrhythmia decreases as the pulse rate accelerates, and it finally disappears at a pressure equivalent to an altitude of 3,000 to 5,000 This was found to be the case in thirteen subjects. meters above sea level. KATZ.
Miiller, 638,
E. A.:
Cardiac
Work
and Heart
Volume.
Arch.
f. ges.
Physiol.
238:
1937.
In the heart-lung preparation the author showed that at constant minute volume output the diastolic volume of the right heart is increased from three to nine times as much as that of the left heart by a similar increase in the peripheral resistancr against which each chamber works. Increasing the minute volume output of the heart at constant peripheral resistance has no effect on systolic heart size. Increasing the mechanical work of the left heart by increase in aortic pressure while keeping the minute volume output constant increases the size of the left heart, twenty times as much as a similar increase in work produces when caused by an increase in minute volume output without a change in arterial pressure. KATZ.
Zaeper, G. : Deutsche
Determination med.
Wchnschr.
of the Circulation 63:
417,
in Health
and in Heart
Disease.
1937.
Trained individuals at a given rate of oxygen consumption show a greater This indicates that in the oxygen unsaturation than untrained individuals. the rate of blood flow, and hence the work of the heart, is less than in the Calculations show that in exercise the work of the heart is 2.4 times as great Training of the cardiac patient, can serve, trained as in trained individuals. fore, to decrease the load on the heart.
venous former latter. in untherrKATZ.
Dressler, Wilhelm : Pulsations of the Wall of the Chest: II. Pulsations ciated With Tricuspid Regurgitation. Arch. Irrt. Med. 66: 437, 1937.
Asso-
A diffuse systolic depression of the anterior wall of the chest is found in instances of aortic regurgitation. This is a result of the increased stroke volume of the left ventricle, unless the aspiratory effect, owing to reduction of the ventricular volume during the systolic efflux, is neutralized by the opposing forces due to the systolic change in shape of the heart. In other instances there is no movement of the thoracic wall adjacent to the liver, while a distinct systolic depression is noted over the preThe diastolic pulsation of the thoracic wall in aortic insufficiency takes cordium. place slowly, as contrasted with the speed noted in the majority of cases of adhesive in which an abrupt propulsion of the pericardial disease or tricuspid regurgitation, thoracie wall is noted during diastole. AUTHOR.