Disturbances of the Heart: Discussion of the Treatment of the Heart in Its Various Disorders, With a Chapter on Blood PressureOsborne, Oliver T. (Oliver Thomas)
Science
Disturbances of the Heart: Discussion of the Treatment of the Heart in Its Various Disorders, With a Chapter on Blood Pressure
Osborne, Oliver T. (Oliver Thomas)
Blood pressure; Heart -- Diseases
A particularly dangerous period for women with this lesion is when
the blood pressure rises after the menopause and the patients become
full-blooded and begin to put on weight. Also, these patients always
suffer more or less from cold extremities. In most cases they sleep
best and with least disturbance with the head higher than one
pillow.
Besides the usual treatment for broken compensation in patients with
this lesion, digitalis is of the greatest value, and the slowing of
the heart by it, allowing the left ventricle to be more completely
filled with the blood coming through the narrowed mitral opening
during the diastole, is the object desired. This drug acts similarly
on both the right and left ventricles, and though there is no real
occasion for stimulation of the left ventricle, and it is the right
ventricle that is in trouble, dilated and failing, still a greater
force of left ventricle contraction helps the peripheral
circulation. The action on the right ventricle contributes greatly
to the relief of the patient by sending the blood through the lungs
and into the left auricle more forcibly. and the left ventricle
receives an increased amount of blood, the congestion in the lungs
is relieved, and the dyspnea improves. Perhaps there is no class of
cardiac diseases in which more frequent striking relief can be
obtained than in these cases of mitral stenosis.
If the congestion of the lungs is very great, and death seems
imminent from cardiac paralysis, if cyanosis is serious, and bloody.
frothy mucus is being expectorated, venesection and an intramuscular
injection of aseptic ergot may be indicated. Digitalis should also
be given, hypodermically perhaps, but its action would be too late
if it was not aided by other more quickly acting drugs. The
physician may often save life by such radical measures.
MITRAL INSUFFICIENCY: MITRAL REGURGITATION
This is the most frequent form of valvular disease of the heart, and
is due to a shortening or thickening of the valves, or to some
adhesion which does not permit the valve, to close properly, and the
blood consequently regurgitates from the left ventricle into the
left auricle during the contraction of the ventricle. Such
regurgitation may occur without valvular disease if for any reason
the left ventricle becomes dilated sufficiently to cause the valve
to be insufficient. Such a dilatation can generally be cured by rest
and treatment. As with mitral stenosis, the most frequent causes are
rheumatism and chorea, with the occasional other causes as
previously enumerated.
The characteristic murmur of this lesion is a systolic blow,
accentuated at the apex, transmitted to the left of the thorax,
generally heard in the back, near the lower end of the scapula, and
transmitted upward over the precordia.
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