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This disease is caused by inflammation of the mucous membrane...
Rich Foods Brandy Beef-tea Etc
must be avoided. Involuntary starting, and the manifestation...
Eruptive Cutaneous Diseases
Take A D current, pretty vigorous force in acute cases; mild ...
Sudden attacks of this, though in a mild form, are very troubl...
Consumption Treatment Of
Turning now to the case when consumption has actually shown it...
Colds Consumption And Pneumonia
Disease Germs. In all foul air there are scores of different ...
This frequent and distressing trouble is to be traced to a sta...
Home Methods Of Purifying Water
Boiling. Where the water that you are obliged to drink is not...
The Half-bath The Sitz- Or Hip-bath
Should the half-bath or shallow-bath (which are technical ter...
The Effect Of Athletics On The Heart
We can no longer neglect the seriousness of the effects of c...
The patient should be placed in the recumbent position, with...
See Angina Pectoris. ...
Arterial hypertension may be divided into stages. In the fi...
When the nervous system is in a certain state, all impressions...
These begin like warts, and in the earlier stages poulticing a...
Inspection Of The Party Wall In Cases Of Suspected Laryngeal Malignancy
When taking a specimen the party wall should be inspected by...
The Confusions About Diets And Foods
Like my daughter, many people of all ages are muddled about t...
Strict aseptic technic must be observed in all endoscopic pr...
The Roentgenographic Signs Of Expiratory-valve-like Bronchial Obstruction
The roentgenray signs in expiratory valve-like obstruction of...
Source: Disturbances Of The Heart
Aortic narrowing or stenosis is a frequent occurrence in the aged
and in arteriosclerosis when the aorta is involved. It is not a
frequent single lesion in the young. If it occurs in children or
young adults, it is likely to be combined with aortic regurgitation,
meaning that the valve hay been seriously injured by an
The first effect of this narrowing is to cause hypertrophy of the
left ventricle, and as long as this ventricle is able to force the
blood through the narrowed opening at the aortic valve, the general
circulation is perfect. Nature again steps in to cause such a heart
to heat deliberately, allowing time for the contracting ventricle to
force the blood through the narrowed orifice. The blood pressure may
be sufficient, or even increased if arteriosclerosis is present,
although the rise of the sphygmograph tracing is not so high as
normal. If the pressure in the aorta is sufficient from the amount
of blood forced into it, the coronary arteries receive enough blood
to keep up the nutrition of the heart muscle. Sooner or later,
however, the left ventricle will become weakened, especially when
there is arteriosclerosis or other hypertension, and chronic
endocarditis and fatty degeneration result. If the left ventricle
becomes sufficiently weakened or dilated, the same damming back of
the blood through the lungs and right heart occurs, and more or less
serious signs of broken compensation develop. The main danger,
however, with a heart with this lesion, occurring coincidently with
arteriosclerosis, is a progressive chronic myocarditis.
Next: Other Lesions
Previous: Physics Of Aortic Lesions